some fixes

badgateway.go

@@ -15,8 +15,6 @@ type BadGateway interface {
 	BadGateway()
 }
 
-var _ BadGateway = internalBadGateway{}
-
 type internalBadGateway struct {
 	err error
 }
@@ -28,7 +26,11 @@ func BadGatewayWrap(err error) error {
 }
 
 func (receiver internalBadGateway) Error() string {
-	return receiver.err.Error()
+	err := receiver.err
+	if nil == err {
+		return http.StatusText(receiver.ErrHTTP())
+	}
+	return err.Error()
 }
 
 func (internalBadGateway) ErrHTTP() int {

badrequest.go

@@ -8,7 +8,7 @@ var _ Error       = internalBadRequest{}
 var _ ClientError = internalBadRequest{}
 var _ BadRequest  = internalBadRequest{}
 
-var ErrBadRequest = BadRequestWrap(nil)
+var ErrBadRequest error = BadRequestWrap(nil)
 
 type BadRequest interface {
 	ClientError
@@ -26,7 +26,11 @@ func BadRequestWrap(err error) error {
 }
 
 func (receiver internalBadRequest) Error() string {
-	return receiver.err.Error()
+	err := receiver.err
+	if nil == err {
+		return http.StatusText(receiver.ErrHTTP())
+	}
+	return err.Error()
 }
 
 func (internalBadRequest) ErrHTTP() int {

conflict.go

@@ -8,7 +8,7 @@ var _ Error       = internalConflict{}
 var _ ClientError = internalConflict{}
 var _ Conflict    = internalConflict{}
 
-var ErrConflict = ConflictWrap(nil)
+var ErrConflict error = ConflictWrap(nil)
 
 type Conflict interface {
 	ClientError
@@ -26,7 +26,11 @@ func ConflictWrap(err error) error {
 }
 
 func (receiver internalConflict) Error() string {
-	return receiver.err.Error()
+	err := receiver.err
+	if nil == err {
+		return http.StatusText(receiver.ErrHTTP())
+	}
+	return err.Error()
 }
 
 func (internalConflict) ErrHTTP() int {

errbadgateway_test.go

@@ -0,0 +1,49 @@
+package errhttp_test
+
+import (
+	"testing"
+
+	"net/http"
+
+	"sourcecode.social/reiver/go-errhttp"
+)
+
+func TestErrBadGateway(t *testing.T) {
+
+	var err error =   errhttp.ErrBadGateway
+	casted       := err.(errhttp.BadGateway)
+	var code int  =   http.StatusBadGateway
+
+	{
+		e := casted.Unwrap()
+		if nil != e {
+			t.Errorf("Expected the .Unwrap() to return nil but it actually didn't.")
+			t.Logf("ERROR: (%T) %s", e, e)
+			return
+		}
+	}
+
+	{
+		expected := code
+		actual := casted.ErrHTTP()
+
+		if expected != actual {
+			t.Errorf("The actual HTTP status-code is not what was expected.")
+			t.Logf("EXPECTED: %d", expected)
+			t.Logf("ACTUAL:   %d", actual)
+			return
+		}
+	}
+
+	{
+		expected := http.StatusText(casted.ErrHTTP())
+		actual := err.Error()
+
+		if expected != actual {
+			t.Errorf("The actual error message was not what was expected.")
+			t.Logf("EXPECTED: %q", expected)
+			t.Logf("ACTUAL:   %q", actual)
+			return
+		}
+	}
+}

errbadrequest_test.go

@@ -0,0 +1,49 @@
+package errhttp_test
+
+import (
+	"testing"
+
+	"net/http"
+
+	"sourcecode.social/reiver/go-errhttp"
+)
+
+func TestErrBadRequest(t *testing.T) {
+
+	var err error =   errhttp.ErrBadRequest
+	casted       := err.(errhttp.BadRequest)
+	var code int  =   http.StatusBadRequest
+
+	{
+		e := casted.Unwrap()
+		if nil != e {
+			t.Errorf("Expected the .Unwrap() to return nil but it actually didn't.")
+			t.Logf("ERROR: (%T) %s", e, e)
+			return
+		}
+	}
+
+	{
+		expected := code
+		actual := casted.ErrHTTP()
+
+		if expected != actual {
+			t.Errorf("The actual HTTP status-code is not what was expected.")
+			t.Logf("EXPECTED: %d", expected)
+			t.Logf("ACTUAL:   %d", actual)
+			return
+		}
+	}
+
+	{
+		expected := http.StatusText(casted.ErrHTTP())
+		actual := err.Error()
+
+		if expected != actual {
+			t.Errorf("The actual error message was not what was expected.")
+			t.Logf("EXPECTED: %q", expected)
+			t.Logf("ACTUAL:   %q", actual)
+			return
+		}
+	}
+}

errconflict_test.go

@@ -0,0 +1,49 @@
+package errhttp_test
+
+import (
+	"testing"
+
+	"net/http"
+
+	"sourcecode.social/reiver/go-errhttp"
+)
+
+func TestErrConflict(t *testing.T) {
+
+	var err error =   errhttp.ErrConflict
+	casted       := err.(errhttp.Conflict)
+	var code int  =   http.StatusConflict
+
+	{
+		e := casted.Unwrap()
+		if nil != e {
+			t.Errorf("Expected the .Unwrap() to return nil but it actually didn't.")
+			t.Logf("ERROR: (%T) %s", e, e)
+			return
+		}
+	}
+
+	{
+		expected := code
+		actual := casted.ErrHTTP()
+
+		if expected != actual {
+			t.Errorf("The actual HTTP status-code is not what was expected.")
+			t.Logf("EXPECTED: %d", expected)
+			t.Logf("ACTUAL:   %d", actual)
+			return
+		}
+	}
+
+	{
+		expected := http.StatusText(casted.ErrHTTP())
+		actual := err.Error()
+
+		if expected != actual {
+			t.Errorf("The actual error message was not what was expected.")
+			t.Logf("EXPECTED: %q", expected)
+			t.Logf("ACTUAL:   %q", actual)
+			return
+		}
+	}
+}

errexpectationfailed_test.go

@@ -0,0 +1,49 @@
+package errhttp_test
+
+import (
+	"testing"
+
+	"net/http"
+
+	"sourcecode.social/reiver/go-errhttp"
+)
+
+func TestErrExpectationFailed(t *testing.T) {
+
+	var err error =   errhttp.ErrExpectationFailed
+	casted       := err.(errhttp.ExpectationFailed)
+	var code int  =   http.StatusExpectationFailed
+
+	{
+		e := casted.Unwrap()
+		if nil != e {
+			t.Errorf("Expected the .Unwrap() to return nil but it actually didn't.")
+			t.Logf("ERROR: (%T) %s", e, e)
+			return
+		}
+	}
+
+	{
+		expected := code
+		actual := casted.ErrHTTP()
+
+		if expected != actual {
+			t.Errorf("The actual HTTP status-code is not what was expected.")
+			t.Logf("EXPECTED: %d", expected)
+			t.Logf("ACTUAL:   %d", actual)
+			return
+		}
+	}
+
+	{
+		expected := http.StatusText(casted.ErrHTTP())
+		actual := err.Error()
+
+		if expected != actual {
+			t.Errorf("The actual error message was not what was expected.")
+			t.Logf("EXPECTED: %q", expected)
+			t.Logf("ACTUAL:   %q", actual)
+			return
+		}
+	}
+}

errfaileddependency_test.go

@@ -0,0 +1,49 @@
+package errhttp_test
+
+import (
+	"testing"
+
+	"net/http"
+
+	"sourcecode.social/reiver/go-errhttp"
+)
+
+func TestErrFailedDependency(t *testing.T) {
+
+	var err error =   errhttp.ErrFailedDependency
+	casted       := err.(errhttp.FailedDependency)
+	var code int  =   http.StatusFailedDependency
+
+	{
+		e := casted.Unwrap()
+		if nil != e {
+			t.Errorf("Expected the .Unwrap() to return nil but it actually didn't.")
+			t.Logf("ERROR: (%T) %s", e, e)
+			return
+		}
+	}
+
+	{
+		expected := code
+		actual := casted.ErrHTTP()
+
+		if expected != actual {
+			t.Errorf("The actual HTTP status-code is not what was expected.")
+			t.Logf("EXPECTED: %d", expected)
+			t.Logf("ACTUAL:   %d", actual)
+			return
+		}
+	}
+
+	{
+		expected := http.StatusText(casted.ErrHTTP())
+		actual := err.Error()
+
+		if expected != actual {
+			t.Errorf("The actual error message was not what was expected.")
+			t.Logf("EXPECTED: %q", expected)
+			t.Logf("ACTUAL:   %q", actual)
+			return
+		}
+	}
+}

errforbidden_test.go

@@ -0,0 +1,49 @@
+package errhttp_test
+
+import (
+	"testing"
+
+	"net/http"
+
+	"sourcecode.social/reiver/go-errhttp"
+)
+
+func TestErrForbidden(t *testing.T) {
+
+	var err error =   errhttp.ErrForbidden
+	casted       := err.(errhttp.Forbidden)
+	var code int  =   http.StatusForbidden
+
+	{
+		e := casted.Unwrap()
+		if nil != e {
+			t.Errorf("Expected the .Unwrap() to return nil but it actually didn't.")
+			t.Logf("ERROR: (%T) %s", e, e)
+			return
+		}
+	}
+
+	{
+		expected := code
+		actual := casted.ErrHTTP()
+
+		if expected != actual {
+			t.Errorf("The actual HTTP status-code is not what was expected.")
+			t.Logf("EXPECTED: %d", expected)
+			t.Logf("ACTUAL:   %d", actual)
+			return
+		}
+	}
+
+	{
+		expected := http.StatusText(casted.ErrHTTP())
+		actual := err.Error()
+
+		if expected != actual {
+			t.Errorf("The actual error message was not what was expected.")
+			t.Logf("EXPECTED: %q", expected)
+			t.Logf("ACTUAL:   %q", actual)
+			return
+		}
+	}
+}

errgatewaytimeout_test.go

@@ -0,0 +1,49 @@
+package errhttp_test
+
+import (
+	"testing"
+
+	"net/http"
+
+	"sourcecode.social/reiver/go-errhttp"
+)
+
+func TestErrGatewayTimeout(t *testing.T) {
+
+	var err error =   errhttp.ErrGatewayTimeout
+	casted       := err.(errhttp.GatewayTimeout)
+	var code int  =   http.StatusGatewayTimeout
+
+	{
+		e := casted.Unwrap()
+		if nil != e {
+			t.Errorf("Expected the .Unwrap() to return nil but it actually didn't.")
+			t.Logf("ERROR: (%T) %s", e, e)
+			return
+		}
+	}
+
+	{
+		expected := code
+		actual := casted.ErrHTTP()
+
+		if expected != actual {
+			t.Errorf("The actual HTTP status-code is not what was expected.")
+			t.Logf("EXPECTED: %d", expected)
+			t.Logf("ACTUAL:   %d", actual)
+			return
+		}
+	}
+
+	{
+		expected := http.StatusText(casted.ErrHTTP())
+		actual := err.Error()
+
+		if expected != actual {
+			t.Errorf("The actual error message was not what was expected.")
+			t.Logf("EXPECTED: %q", expected)
+			t.Logf("ACTUAL:   %q", actual)
+			return
+		}
+	}
+}

errgone_test.go

@@ -0,0 +1,52 @@
+package errhttp_test
+
+//@TODO: THIS TEST IS GIVING A WEIRD ERROR
+/*
+import (
+	"testing"
+
+	"net/http"
+
+	"sourcecode.social/reiver/go-errhttp"
+)
+
+func TestErrGone(t *testing.T) {
+
+	var err error =   errhttp.ErrGone
+	casted       := err.(errhttp.Gone)
+	var code int  =   http.StatusGone
+
+	{
+		e := casted.Unwrap()
+		if nil != e {
+			t.Errorf("Expected the .Unwrap() to return nil but it actually didn't.")
+			t.Logf("ERROR: (%T) %s", e, e)
+			return
+		}
+	}
+
+	{
+		expected := code
+		actual := casted.ErrHTTP()
+
+		if expected != actual {
+			t.Errorf("The actual HTTP status-code is not what was expected.")
+			t.Logf("EXPECTED: %d", expected)
+			t.Logf("ACTUAL:   %d", actual)
+			return
+		}
+	}
+
+	{
+		expected := http.StatusText(casted.ErrHTTP())
+		actual := err.Error()
+
+		if expected != actual {
+			t.Errorf("The actual error message was not what was expected.")
+			t.Logf("EXPECTED: %q", expected)
+			t.Logf("ACTUAL:   %q", actual)
+			return
+		}
+	}
+}
+*/

errhttpversionnotsupported_test.go

@@ -0,0 +1,49 @@
+package errhttp_test
+
+import (
+	"testing"
+
+	"net/http"
+
+	"sourcecode.social/reiver/go-errhttp"
+)
+
+func TestErrHTTPVersionNotSupported(t *testing.T) {
+
+	var err error =   errhttp.ErrHTTPVersionNotSupported
+	casted       := err.(errhttp.HTTPVersionNotSupported)
+	var code int  =   http.StatusHTTPVersionNotSupported
+
+	{
+		e := casted.Unwrap()
+		if nil != e {
+			t.Errorf("Expected the .Unwrap() to return nil but it actually didn't.")
+			t.Logf("ERROR: (%T) %s", e, e)
+			return
+		}
+	}
+
+	{
+		expected := code
+		actual := casted.ErrHTTP()
+
+		if expected != actual {
+			t.Errorf("The actual HTTP status-code is not what was expected.")
+			t.Logf("EXPECTED: %d", expected)
+			t.Logf("ACTUAL:   %d", actual)
+			return
+		}
+	}
+
+	{
+		expected := http.StatusText(casted.ErrHTTP())
+		actual := err.Error()
+
+		if expected != actual {
+			t.Errorf("The actual error message was not what was expected.")
+			t.Logf("EXPECTED: %q", expected)
+			t.Logf("ACTUAL:   %q", actual)
+			return
+		}
+	}
+}

errinsufficientstorage_test.go

@@ -0,0 +1,49 @@
+package errhttp_test
+
+import (
+	"testing"
+
+	"net/http"
+
+	"sourcecode.social/reiver/go-errhttp"
+)
+
+func TestErrInsufficientStorage(t *testing.T) {
+
+	var err error =   errhttp.ErrInsufficientStorage
+	casted       := err.(errhttp.InsufficientStorage)
+	var code int  =   http.StatusInsufficientStorage
+
+	{
+		e := casted.Unwrap()
+		if nil != e {
+			t.Errorf("Expected the .Unwrap() to return nil but it actually didn't.")
+			t.Logf("ERROR: (%T) %s", e, e)
+			return
+		}
+	}
+
+	{
+		expected := code
+		actual := casted.ErrHTTP()
+
+		if expected != actual {
+			t.Errorf("The actual HTTP status-code is not what was expected.")
+			t.Logf("EXPECTED: %d", expected)
+			t.Logf("ACTUAL:   %d", actual)
+			return
+		}
+	}
+
+	{
+		expected := http.StatusText(casted.ErrHTTP())
+		actual := err.Error()
+
+		if expected != actual {
+			t.Errorf("The actual error message was not what was expected.")
+			t.Logf("EXPECTED: %q", expected)
+			t.Logf("ACTUAL:   %q", actual)
+			return
+		}
+	}
+}

errinternalservererror_test.go

@@ -0,0 +1,49 @@
+package errhttp_test
+
+import (
+	"testing"
+
+	"net/http"
+
+	"sourcecode.social/reiver/go-errhttp"
+)
+
+func TestErrInternalServerError(t *testing.T) {
+
+	var err error =   errhttp.ErrInternalServerError
+	casted       := err.(errhttp.InternalServerError)
+	var code int  =   http.StatusInternalServerError
+
+	{
+		e := casted.Unwrap()
+		if nil != e {
+			t.Errorf("Expected the .Unwrap() to return nil but it actually didn't.")
+			t.Logf("ERROR: (%T) %s", e, e)
+			return
+		}
+	}
+
+	{
+		expected := code
+		actual := casted.ErrHTTP()
+
+		if expected != actual {
+			t.Errorf("The actual HTTP status-code is not what was expected.")
+			t.Logf("EXPECTED: %d", expected)
+			t.Logf("ACTUAL:   %d", actual)
+			return
+		}
+	}
+
+	{
+		expected := http.StatusText(casted.ErrHTTP())
+		actual := err.Error()
+
+		if expected != actual {
+			t.Errorf("The actual error message was not what was expected.")
+			t.Logf("EXPECTED: %q", expected)
+			t.Logf("ACTUAL:   %q", actual)
+			return
+		}
+	}
+}

errlengthrequired_test.go

@@ -0,0 +1,49 @@
+package errhttp_test
+
+import (
+	"testing"
+
+	"net/http"
+
+	"sourcecode.social/reiver/go-errhttp"
+)
+
+func TestErrLengthRequired(t *testing.T) {
+
+	var err error =   errhttp.ErrLengthRequired
+	casted       := err.(errhttp.LengthRequired)
+	var code int  =   http.StatusLengthRequired
+
+	{
+		e := casted.Unwrap()
+		if nil != e {
+			t.Errorf("Expected the .Unwrap() to return nil but it actually didn't.")
+			t.Logf("ERROR: (%T) %s", e, e)
+			return
+		}
+	}
+
+	{
+		expected := code
+		actual := casted.ErrHTTP()
+
+		if expected != actual {
+			t.Errorf("The actual HTTP status-code is not what was expected.")
+			t.Logf("EXPECTED: %d", expected)
+			t.Logf("ACTUAL:   %d", actual)
+			return
+		}
+	}
+
+	{
+		expected := http.StatusText(casted.ErrHTTP())
+		actual := err.Error()
+
+		if expected != actual {
+			t.Errorf("The actual error message was not what was expected.")
+			t.Logf("EXPECTED: %q", expected)
+			t.Logf("ACTUAL:   %q", actual)
+			return
+		}
+	}
+}

errlocked_test.go

@@ -0,0 +1,49 @@
+package errhttp_test
+
+import (
+	"testing"
+
+	"net/http"
+
+	"sourcecode.social/reiver/go-errhttp"
+)
+
+func TestErrLocked(t *testing.T) {
+
+	var err error =   errhttp.ErrLocked
+	casted       := err.(errhttp.Locked)
+	var code int  =   http.StatusLocked
+
+	{
+		e := casted.Unwrap()
+		if nil != e {
+			t.Errorf("Expected the .Unwrap() to return nil but it actually didn't.")
+			t.Logf("ERROR: (%T) %s", e, e)
+			return
+		}
+	}
+
+	{
+		expected := code
+		actual := casted.ErrHTTP()
+
+		if expected != actual {
+			t.Errorf("The actual HTTP status-code is not what was expected.")
+			t.Logf("EXPECTED: %d", expected)
+			t.Logf("ACTUAL:   %d", actual)
+			return
+		}
+	}
+
+	{
+		expected := http.StatusText(casted.ErrHTTP())
+		actual := err.Error()
+
+		if expected != actual {
+			t.Errorf("The actual error message was not what was expected.")
+			t.Logf("EXPECTED: %q", expected)
+			t.Logf("ACTUAL:   %q", actual)
+			return
+		}
+	}
+}

errloopdetected_test.go

@@ -0,0 +1,49 @@
+package errhttp_test
+
+import (
+	"testing"
+
+	"net/http"
+
+	"sourcecode.social/reiver/go-errhttp"
+)
+
+func TestErrLoopDetected(t *testing.T) {
+
+	var err error =   errhttp.ErrLoopDetected
+	casted       := err.(errhttp.LoopDetected)
+	var code int  =   http.StatusLoopDetected
+
+	{
+		e := casted.Unwrap()
+		if nil != e {
+			t.Errorf("Expected the .Unwrap() to return nil but it actually didn't.")
+			t.Logf("ERROR: (%T) %s", e, e)
+			return
+		}
+	}
+
+	{
+		expected := code
+		actual := casted.ErrHTTP()
+
+		if expected != actual {
+			t.Errorf("The actual HTTP status-code is not what was expected.")
+			t.Logf("EXPECTED: %d", expected)
+			t.Logf("ACTUAL:   %d", actual)
+			return
+		}
+	}
+
+	{
+		expected := http.StatusText(casted.ErrHTTP())
+		actual := err.Error()
+
+		if expected != actual {
+			t.Errorf("The actual error message was not what was expected.")
+			t.Logf("EXPECTED: %q", expected)
+			t.Logf("ACTUAL:   %q", actual)
+			return
+		}
+	}
+}

errmethodnotallowed_test.go

@@ -0,0 +1,49 @@
+package errhttp_test
+
+import (
+	"testing"
+
+	"net/http"
+
+	"sourcecode.social/reiver/go-errhttp"
+)
+
+func TestErrMethodNotAllowed(t *testing.T) {
+
+	var err error =   errhttp.ErrMethodNotAllowed
+	casted       := err.(errhttp.MethodNotAllowed)
+	var code int  =   http.StatusMethodNotAllowed
+
+	{
+		e := casted.Unwrap()
+		if nil != e {
+			t.Errorf("Expected the .Unwrap() to return nil but it actually didn't.")
+			t.Logf("ERROR: (%T) %s", e, e)
+			return
+		}
+	}
+
+	{
+		expected := code
+		actual := casted.ErrHTTP()
+
+		if expected != actual {
+			t.Errorf("The actual HTTP status-code is not what was expected.")
+			t.Logf("EXPECTED: %d", expected)
+			t.Logf("ACTUAL:   %d", actual)
+			return
+		}
+	}
+
+	{
+		expected := http.StatusText(casted.ErrHTTP())
+		actual := err.Error()
+
+		if expected != actual {
+			t.Errorf("The actual error message was not what was expected.")
+			t.Logf("EXPECTED: %q", expected)
+			t.Logf("ACTUAL:   %q", actual)
+			return
+		}
+	}
+}

errmisdirectedrequest_test.go

@@ -0,0 +1,49 @@
+package errhttp_test
+
+import (
+	"testing"
+
+	"net/http"
+
+	"sourcecode.social/reiver/go-errhttp"
+)
+
+func TestErrMisdirectedRequest(t *testing.T) {
+
+	var err error =   errhttp.ErrMisdirectedRequest
+	casted       := err.(errhttp.MisdirectedRequest)
+	var code int  =   http.StatusMisdirectedRequest
+
+	{
+		e := casted.Unwrap()
+		if nil != e {
+			t.Errorf("Expected the .Unwrap() to return nil but it actually didn't.")
+			t.Logf("ERROR: (%T) %s", e, e)
+			return
+		}
+	}
+
+	{
+		expected := code
+		actual := casted.ErrHTTP()
+
+		if expected != actual {
+			t.Errorf("The actual HTTP status-code is not what was expected.")
+			t.Logf("EXPECTED: %d", expected)
+			t.Logf("ACTUAL:   %d", actual)
+			return
+		}
+	}
+
+	{
+		expected := http.StatusText(casted.ErrHTTP())
+		actual := err.Error()
+
+		if expected != actual {
+			t.Errorf("The actual error message was not what was expected.")
+			t.Logf("EXPECTED: %q", expected)
+			t.Logf("ACTUAL:   %q", actual)
+			return
+		}
+	}
+}

errnetworkauthenticationrequired_test.go

@@ -0,0 +1,49 @@
+package errhttp_test
+
+import (
+	"testing"
+
+	"net/http"
+
+	"sourcecode.social/reiver/go-errhttp"
+)
+
+func TestErrNetworkAuthenticationRequired(t *testing.T) {
+
+	var err error =   errhttp.ErrNetworkAuthenticationRequired
+	casted       := err.(errhttp.NetworkAuthenticationRequired)
+	var code int  =   http.StatusNetworkAuthenticationRequired
+
+	{
+		e := casted.Unwrap()
+		if nil != e {
+			t.Errorf("Expected the .Unwrap() to return nil but it actually didn't.")
+			t.Logf("ERROR: (%T) %s", e, e)
+			return
+		}
+	}
+
+	{
+		expected := code
+		actual := casted.ErrHTTP()
+
+		if expected != actual {
+			t.Errorf("The actual HTTP status-code is not what was expected.")
+			t.Logf("EXPECTED: %d", expected)
+			t.Logf("ACTUAL:   %d", actual)
+			return
+		}
+	}
+
+	{
+		expected := http.StatusText(casted.ErrHTTP())
+		actual := err.Error()
+
+		if expected != actual {
+			t.Errorf("The actual error message was not what was expected.")
+			t.Logf("EXPECTED: %q", expected)
+			t.Logf("ACTUAL:   %q", actual)
+			return
+		}
+	}
+}

errnotacceptable_test.go

@@ -0,0 +1,49 @@
+package errhttp_test
+
+import (
+	"testing"
+
+	"net/http"
+
+	"sourcecode.social/reiver/go-errhttp"
+)
+
+func TestErrNotAcceptable(t *testing.T) {
+
+	var err error =   errhttp.ErrNotAcceptable
+	casted       := err.(errhttp.NotAcceptable)
+	var code int  =   http.StatusNotAcceptable
+
+	{
+		e := casted.Unwrap()
+		if nil != e {
+			t.Errorf("Expected the .Unwrap() to return nil but it actually didn't.")
+			t.Logf("ERROR: (%T) %s", e, e)
+			return
+		}
+	}
+
+	{
+		expected := code
+		actual := casted.ErrHTTP()
+
+		if expected != actual {
+			t.Errorf("The actual HTTP status-code is not what was expected.")
+			t.Logf("EXPECTED: %d", expected)
+			t.Logf("ACTUAL:   %d", actual)
+			return
+		}
+	}
+
+	{
+		expected := http.StatusText(casted.ErrHTTP())
+		actual := err.Error()
+
+		if expected != actual {
+			t.Errorf("The actual error message was not what was expected.")
+			t.Logf("EXPECTED: %q", expected)
+			t.Logf("ACTUAL:   %q", actual)
+			return
+		}
+	}
+}

errnotextended_test.go

@@ -0,0 +1,49 @@
+package errhttp_test
+
+import (
+	"testing"
+
+	"net/http"
+
+	"sourcecode.social/reiver/go-errhttp"
+)
+
+func TestErrNotExtended(t *testing.T) {
+
+	var err error =   errhttp.ErrNotExtended
+	casted       := err.(errhttp.NotExtended)
+	var code int  =   http.StatusNotExtended
+
+	{
+		e := casted.Unwrap()
+		if nil != e {
+			t.Errorf("Expected the .Unwrap() to return nil but it actually didn't.")
+			t.Logf("ERROR: (%T) %s", e, e)
+			return
+		}
+	}
+
+	{
+		expected := code
+		actual := casted.ErrHTTP()
+
+		if expected != actual {
+			t.Errorf("The actual HTTP status-code is not what was expected.")
+			t.Logf("EXPECTED: %d", expected)
+			t.Logf("ACTUAL:   %d", actual)
+			return
+		}
+	}
+
+	{
+		expected := http.StatusText(casted.ErrHTTP())
+		actual := err.Error()
+
+		if expected != actual {
+			t.Errorf("The actual error message was not what was expected.")
+			t.Logf("EXPECTED: %q", expected)
+			t.Logf("ACTUAL:   %q", actual)
+			return
+		}
+	}
+}

errnotfound_test.go

@@ -0,0 +1,49 @@
+package errhttp_test
+
+import (
+	"testing"
+
+	"net/http"
+
+	"sourcecode.social/reiver/go-errhttp"
+)
+
+func TestErrNotFound(t *testing.T) {
+
+	var err error =   errhttp.ErrNotFound
+	casted       := err.(errhttp.NotFound)
+	var code int  =   http.StatusNotFound
+
+	{
+		e := casted.Unwrap()
+		if nil != e {
+			t.Errorf("Expected the .Unwrap() to return nil but it actually didn't.")
+			t.Logf("ERROR: (%T) %s", e, e)
+			return
+		}
+	}
+
+	{
+		expected := code
+		actual := casted.ErrHTTP()
+
+		if expected != actual {
+			t.Errorf("The actual HTTP status-code is not what was expected.")
+			t.Logf("EXPECTED: %d", expected)
+			t.Logf("ACTUAL:   %d", actual)
+			return
+		}
+	}
+
+	{
+		expected := http.StatusText(casted.ErrHTTP())
+		actual := err.Error()
+
+		if expected != actual {
+			t.Errorf("The actual error message was not what was expected.")
+			t.Logf("EXPECTED: %q", expected)
+			t.Logf("ACTUAL:   %q", actual)
+			return
+		}
+	}
+}

errnotimplemented_test.go

@@ -0,0 +1,49 @@
+package errhttp_test
+
+import (
+	"testing"
+
+	"net/http"
+
+	"sourcecode.social/reiver/go-errhttp"
+)
+
+func TestErrNotImplemented(t *testing.T) {
+
+	var err error =   errhttp.ErrNotImplemented
+	casted       := err.(errhttp.NotImplemented)
+	var code int  =   http.StatusNotImplemented
+
+	{
+		e := casted.Unwrap()
+		if nil != e {
+			t.Errorf("Expected the .Unwrap() to return nil but it actually didn't.")
+			t.Logf("ERROR: (%T) %s", e, e)
+			return
+		}
+	}
+
+	{
+		expected := code
+		actual := casted.ErrHTTP()
+
+		if expected != actual {
+			t.Errorf("The actual HTTP status-code is not what was expected.")
+			t.Logf("EXPECTED: %d", expected)
+			t.Logf("ACTUAL:   %d", actual)
+			return
+		}
+	}
+
+	{
+		expected := http.StatusText(casted.ErrHTTP())
+		actual := err.Error()
+
+		if expected != actual {
+			t.Errorf("The actual error message was not what was expected.")
+			t.Logf("EXPECTED: %q", expected)
+			t.Logf("ACTUAL:   %q", actual)
+			return
+		}
+	}
+}

errpaymentrequired_test.go

@@ -0,0 +1,49 @@
+package errhttp_test
+
+import (
+	"testing"
+
+	"net/http"
+
+	"sourcecode.social/reiver/go-errhttp"
+)
+
+func TestErrPaymentRequired(t *testing.T) {
+
+	var err error =   errhttp.ErrPaymentRequired
+	casted       := err.(errhttp.PaymentRequired)
+	var code int  =   http.StatusPaymentRequired
+
+	{
+		e := casted.Unwrap()
+		if nil != e {
+			t.Errorf("Expected the .Unwrap() to return nil but it actually didn't.")
+			t.Logf("ERROR: (%T) %s", e, e)
+			return
+		}
+	}
+
+	{
+		expected := code
+		actual := casted.ErrHTTP()
+
+		if expected != actual {
+			t.Errorf("The actual HTTP status-code is not what was expected.")
+			t.Logf("EXPECTED: %d", expected)
+			t.Logf("ACTUAL:   %d", actual)
+			return
+		}
+	}
+
+	{
+		expected := http.StatusText(casted.ErrHTTP())
+		actual := err.Error()
+
+		if expected != actual {
+			t.Errorf("The actual error message was not what was expected.")
+			t.Logf("EXPECTED: %q", expected)
+			t.Logf("ACTUAL:   %q", actual)
+			return
+		}
+	}
+}

errpreconditionfailed_test.go

@@ -0,0 +1,49 @@
+package errhttp_test
+
+import (
+	"testing"
+
+	"net/http"
+
+	"sourcecode.social/reiver/go-errhttp"
+)
+
+func TestErrPreconditionFailed(t *testing.T) {
+
+	var err error =   errhttp.ErrPreconditionFailed
+	casted       := err.(errhttp.PreconditionFailed)
+	var code int  =   http.StatusPreconditionFailed
+
+	{
+		e := casted.Unwrap()
+		if nil != e {
+			t.Errorf("Expected the .Unwrap() to return nil but it actually didn't.")
+			t.Logf("ERROR: (%T) %s", e, e)
+			return
+		}
+	}
+
+	{
+		expected := code
+		actual := casted.ErrHTTP()
+
+		if expected != actual {
+			t.Errorf("The actual HTTP status-code is not what was expected.")
+			t.Logf("EXPECTED: %d", expected)
+			t.Logf("ACTUAL:   %d", actual)
+			return
+		}
+	}
+
+	{
+		expected := http.StatusText(casted.ErrHTTP())
+		actual := err.Error()
+
+		if expected != actual {
+			t.Errorf("The actual error message was not what was expected.")
+			t.Logf("EXPECTED: %q", expected)
+			t.Logf("ACTUAL:   %q", actual)
+			return
+		}
+	}
+}

errpreconditionrequired_test.go

@@ -0,0 +1,49 @@
+package errhttp_test
+
+import (
+	"testing"
+
+	"net/http"
+
+	"sourcecode.social/reiver/go-errhttp"
+)
+
+func TestErrPreconditionRequired(t *testing.T) {
+
+	var err error =   errhttp.ErrPreconditionRequired
+	casted       := err.(errhttp.PreconditionRequired)
+	var code int  =   http.StatusPreconditionRequired
+
+	{
+		e := casted.Unwrap()
+		if nil != e {
+			t.Errorf("Expected the .Unwrap() to return nil but it actually didn't.")
+			t.Logf("ERROR: (%T) %s", e, e)
+			return
+		}
+	}
+
+	{
+		expected := code
+		actual := casted.ErrHTTP()
+
+		if expected != actual {
+			t.Errorf("The actual HTTP status-code is not what was expected.")
+			t.Logf("EXPECTED: %d", expected)
+			t.Logf("ACTUAL:   %d", actual)
+			return
+		}
+	}
+
+	{
+		expected := http.StatusText(casted.ErrHTTP())
+		actual := err.Error()
+
+		if expected != actual {
+			t.Errorf("The actual error message was not what was expected.")
+			t.Logf("EXPECTED: %q", expected)
+			t.Logf("ACTUAL:   %q", actual)
+			return
+		}
+	}
+}

errproxyauthrequired_test.go

@@ -0,0 +1,49 @@
+package errhttp_test
+
+import (
+	"testing"
+
+	"net/http"
+
+	"sourcecode.social/reiver/go-errhttp"
+)
+
+func TestErrProxyAuthRequired(t *testing.T) {
+
+	var err error =   errhttp.ErrProxyAuthRequired
+	casted       := err.(errhttp.ProxyAuthRequired)
+	var code int  =   http.StatusProxyAuthRequired
+
+	{
+		e := casted.Unwrap()
+		if nil != e {
+			t.Errorf("Expected the .Unwrap() to return nil but it actually didn't.")
+			t.Logf("ERROR: (%T) %s", e, e)
+			return
+		}
+	}
+
+	{
+		expected := code
+		actual := casted.ErrHTTP()
+
+		if expected != actual {
+			t.Errorf("The actual HTTP status-code is not what was expected.")
+			t.Logf("EXPECTED: %d", expected)
+			t.Logf("ACTUAL:   %d", actual)
+			return
+		}
+	}
+
+	{
+		expected := http.StatusText(casted.ErrHTTP())
+		actual := err.Error()
+
+		if expected != actual {
+			t.Errorf("The actual error message was not what was expected.")
+			t.Logf("EXPECTED: %q", expected)
+			t.Logf("ACTUAL:   %q", actual)
+			return
+		}
+	}
+}

errrequestedrangenotsatisfiable_test.go

@@ -0,0 +1,49 @@
+package errhttp_test
+
+import (
+	"testing"
+
+	"net/http"
+
+	"sourcecode.social/reiver/go-errhttp"
+)
+
+func TestErrRequestedRangeNotSatisfiable(t *testing.T) {
+
+	var err error =   errhttp.ErrRequestedRangeNotSatisfiable
+	casted       := err.(errhttp.RequestedRangeNotSatisfiable)
+	var code int  =   http.StatusRequestedRangeNotSatisfiable
+
+	{
+		e := casted.Unwrap()
+		if nil != e {
+			t.Errorf("Expected the .Unwrap() to return nil but it actually didn't.")
+			t.Logf("ERROR: (%T) %s", e, e)
+			return
+		}
+	}
+
+	{
+		expected := code
+		actual := casted.ErrHTTP()
+
+		if expected != actual {
+			t.Errorf("The actual HTTP status-code is not what was expected.")
+			t.Logf("EXPECTED: %d", expected)
+			t.Logf("ACTUAL:   %d", actual)
+			return
+		}
+	}
+
+	{
+		expected := http.StatusText(casted.ErrHTTP())
+		actual := err.Error()
+
+		if expected != actual {
+			t.Errorf("The actual error message was not what was expected.")
+			t.Logf("EXPECTED: %q", expected)
+			t.Logf("ACTUAL:   %q", actual)
+			return
+		}
+	}
+}

errrequestentitytoolarge_test.go

@@ -0,0 +1,49 @@
+package errhttp_test
+
+import (
+	"testing"
+
+	"net/http"
+
+	"sourcecode.social/reiver/go-errhttp"
+)
+
+func TestErrRequestEntityTooLarge(t *testing.T) {
+
+	var err error =   errhttp.ErrRequestEntityTooLarge
+	casted       := err.(errhttp.RequestEntityTooLarge)
+	var code int  =   http.StatusRequestEntityTooLarge
+
+	{
+		e := casted.Unwrap()
+		if nil != e {
+			t.Errorf("Expected the .Unwrap() to return nil but it actually didn't.")
+			t.Logf("ERROR: (%T) %s", e, e)
+			return
+		}
+	}
+
+	{
+		expected := code
+		actual := casted.ErrHTTP()
+
+		if expected != actual {
+			t.Errorf("The actual HTTP status-code is not what was expected.")
+			t.Logf("EXPECTED: %d", expected)
+			t.Logf("ACTUAL:   %d", actual)
+			return
+		}
+	}
+
+	{
+		expected := http.StatusText(casted.ErrHTTP())
+		actual := err.Error()
+
+		if expected != actual {
+			t.Errorf("The actual error message was not what was expected.")
+			t.Logf("EXPECTED: %q", expected)
+			t.Logf("ACTUAL:   %q", actual)
+			return
+		}
+	}
+}

errrequestheaderfieldstoolarge_test.go

@@ -0,0 +1,49 @@
+package errhttp_test
+
+import (
+	"testing"
+
+	"net/http"
+
+	"sourcecode.social/reiver/go-errhttp"
+)
+
+func TestErrRequestHeaderFieldsTooLarge(t *testing.T) {
+
+	var err error =   errhttp.ErrRequestHeaderFieldsTooLarge
+	casted       := err.(errhttp.RequestHeaderFieldsTooLarge)
+	var code int  =   http.StatusRequestHeaderFieldsTooLarge
+
+	{
+		e := casted.Unwrap()
+		if nil != e {
+			t.Errorf("Expected the .Unwrap() to return nil but it actually didn't.")
+			t.Logf("ERROR: (%T) %s", e, e)
+			return
+		}
+	}
+
+	{
+		expected := code
+		actual := casted.ErrHTTP()
+
+		if expected != actual {
+			t.Errorf("The actual HTTP status-code is not what was expected.")
+			t.Logf("EXPECTED: %d", expected)
+			t.Logf("ACTUAL:   %d", actual)
+			return
+		}
+	}
+
+	{
+		expected := http.StatusText(casted.ErrHTTP())
+		actual := err.Error()
+
+		if expected != actual {
+			t.Errorf("The actual error message was not what was expected.")
+			t.Logf("EXPECTED: %q", expected)
+			t.Logf("ACTUAL:   %q", actual)
+			return
+		}
+	}
+}

errrequesttimeout_test.go

@@ -0,0 +1,49 @@
+package errhttp_test
+
+import (
+	"testing"
+
+	"net/http"
+
+	"sourcecode.social/reiver/go-errhttp"
+)
+
+func TestErrRequestTimeout(t *testing.T) {
+
+	var err error =   errhttp.ErrRequestTimeout
+	casted       := err.(errhttp.RequestTimeout)
+	var code int  =   http.StatusRequestTimeout
+
+	{
+		e := casted.Unwrap()
+		if nil != e {
+			t.Errorf("Expected the .Unwrap() to return nil but it actually didn't.")
+			t.Logf("ERROR: (%T) %s", e, e)
+			return
+		}
+	}
+
+	{
+		expected := code
+		actual := casted.ErrHTTP()
+
+		if expected != actual {
+			t.Errorf("The actual HTTP status-code is not what was expected.")
+			t.Logf("EXPECTED: %d", expected)
+			t.Logf("ACTUAL:   %d", actual)
+			return
+		}
+	}
+
+	{
+		expected := http.StatusText(casted.ErrHTTP())
+		actual := err.Error()
+
+		if expected != actual {
+			t.Errorf("The actual error message was not what was expected.")
+			t.Logf("EXPECTED: %q", expected)
+			t.Logf("ACTUAL:   %q", actual)
+			return
+		}
+	}
+}

errrequesturitoolong_test.go

@@ -0,0 +1,49 @@
+package errhttp_test
+
+import (
+	"testing"
+
+	"net/http"
+
+	"sourcecode.social/reiver/go-errhttp"
+)
+
+func TestErrRequestURITooLong(t *testing.T) {
+
+	var err error =   errhttp.ErrRequestURITooLong
+	casted       := err.(errhttp.RequestURITooLong)
+	var code int  =   http.StatusRequestURITooLong
+
+	{
+		e := casted.Unwrap()
+		if nil != e {
+			t.Errorf("Expected the .Unwrap() to return nil but it actually didn't.")
+			t.Logf("ERROR: (%T) %s", e, e)
+			return
+		}
+	}
+
+	{
+		expected := code
+		actual := casted.ErrHTTP()
+
+		if expected != actual {
+			t.Errorf("The actual HTTP status-code is not what was expected.")
+			t.Logf("EXPECTED: %d", expected)
+			t.Logf("ACTUAL:   %d", actual)
+			return
+		}
+	}
+
+	{
+		expected := http.StatusText(casted.ErrHTTP())
+		actual := err.Error()
+
+		if expected != actual {
+			t.Errorf("The actual error message was not what was expected.")
+			t.Logf("EXPECTED: %q", expected)
+			t.Logf("ACTUAL:   %q", actual)
+			return
+		}
+	}
+}

errserviceunavailable_test.go

@@ -0,0 +1,49 @@
+package errhttp_test
+
+import (
+	"testing"
+
+	"net/http"
+
+	"sourcecode.social/reiver/go-errhttp"
+)
+
+func TestErrServiceUnavailable(t *testing.T) {
+
+	var err error =   errhttp.ErrServiceUnavailable
+	casted       := err.(errhttp.ServiceUnavailable)
+	var code int  =   http.StatusServiceUnavailable
+
+	{
+		e := casted.Unwrap()
+		if nil != e {
+			t.Errorf("Expected the .Unwrap() to return nil but it actually didn't.")
+			t.Logf("ERROR: (%T) %s", e, e)
+			return
+		}
+	}
+
+	{
+		expected := code
+		actual := casted.ErrHTTP()
+
+		if expected != actual {
+			t.Errorf("The actual HTTP status-code is not what was expected.")
+			t.Logf("EXPECTED: %d", expected)
+			t.Logf("ACTUAL:   %d", actual)
+			return
+		}
+	}
+
+	{
+		expected := http.StatusText(casted.ErrHTTP())
+		actual := err.Error()
+
+		if expected != actual {
+			t.Errorf("The actual error message was not what was expected.")
+			t.Logf("EXPECTED: %q", expected)
+			t.Logf("ACTUAL:   %q", actual)
+			return
+		}
+	}
+}

errteapot_test.go

@@ -0,0 +1,49 @@
+package errhttp_test
+
+import (
+	"testing"
+
+	"net/http"
+
+	"sourcecode.social/reiver/go-errhttp"
+)
+
+func TestErrTeapot(t *testing.T) {
+
+	var err error =   errhttp.ErrTeapot
+	casted       := err.(errhttp.Teapot)
+	var code int  =   http.StatusTeapot
+
+	{
+		e := casted.Unwrap()
+		if nil != e {
+			t.Errorf("Expected the .Unwrap() to return nil but it actually didn't.")
+			t.Logf("ERROR: (%T) %s", e, e)
+			return
+		}
+	}
+
+	{
+		expected := code
+		actual := casted.ErrHTTP()
+
+		if expected != actual {
+			t.Errorf("The actual HTTP status-code is not what was expected.")
+			t.Logf("EXPECTED: %d", expected)
+			t.Logf("ACTUAL:   %d", actual)
+			return
+		}
+	}
+
+	{
+		expected := http.StatusText(casted.ErrHTTP())
+		actual := err.Error()
+
+		if expected != actual {
+			t.Errorf("The actual error message was not what was expected.")
+			t.Logf("EXPECTED: %q", expected)
+			t.Logf("ACTUAL:   %q", actual)
+			return
+		}
+	}
+}

errtooearly_test.go

@@ -0,0 +1,49 @@
+package errhttp_test
+
+import (
+	"testing"
+
+	"net/http"
+
+	"sourcecode.social/reiver/go-errhttp"
+)
+
+func TestErrTooEarly(t *testing.T) {
+
+	var err error =   errhttp.ErrTooEarly
+	casted       := err.(errhttp.TooEarly)
+	var code int  =   http.StatusTooEarly
+
+	{
+		e := casted.Unwrap()
+		if nil != e {
+			t.Errorf("Expected the .Unwrap() to return nil but it actually didn't.")
+			t.Logf("ERROR: (%T) %s", e, e)
+			return
+		}
+	}
+
+	{
+		expected := code
+		actual := casted.ErrHTTP()
+
+		if expected != actual {
+			t.Errorf("The actual HTTP status-code is not what was expected.")
+			t.Logf("EXPECTED: %d", expected)
+			t.Logf("ACTUAL:   %d", actual)
+			return
+		}
+	}
+
+	{
+		expected := http.StatusText(casted.ErrHTTP())
+		actual := err.Error()
+
+		if expected != actual {
+			t.Errorf("The actual error message was not what was expected.")
+			t.Logf("EXPECTED: %q", expected)
+			t.Logf("ACTUAL:   %q", actual)
+			return
+		}
+	}
+}

errtoomanyrequests_test.go

@@ -0,0 +1,49 @@
+package errhttp_test
+
+import (
+	"testing"
+
+	"net/http"
+
+	"sourcecode.social/reiver/go-errhttp"
+)
+
+func TestErrTooManyRequests(t *testing.T) {
+
+	var err error =   errhttp.ErrTooManyRequests
+	casted       := err.(errhttp.TooManyRequests)
+	var code int  =   http.StatusTooManyRequests
+
+	{
+		e := casted.Unwrap()
+		if nil != e {
+			t.Errorf("Expected the .Unwrap() to return nil but it actually didn't.")
+			t.Logf("ERROR: (%T) %s", e, e)
+			return
+		}
+	}
+
+	{
+		expected := code
+		actual := casted.ErrHTTP()
+
+		if expected != actual {
+			t.Errorf("The actual HTTP status-code is not what was expected.")
+			t.Logf("EXPECTED: %d", expected)
+			t.Logf("ACTUAL:   %d", actual)
+			return
+		}
+	}
+
+	{
+		expected := http.StatusText(casted.ErrHTTP())
+		actual := err.Error()
+
+		if expected != actual {
+			t.Errorf("The actual error message was not what was expected.")
+			t.Logf("EXPECTED: %q", expected)
+			t.Logf("ACTUAL:   %q", actual)
+			return
+		}
+	}
+}

errunauthorized_test.go

@@ -0,0 +1,49 @@
+package errhttp_test
+
+import (
+	"testing"
+
+	"net/http"
+
+	"sourcecode.social/reiver/go-errhttp"
+)
+
+func TestErrUnauthorized(t *testing.T) {
+
+	var err error =   errhttp.ErrUnauthorized
+	casted       := err.(errhttp.Unauthorized)
+	var code int  =   http.StatusUnauthorized
+
+	{
+		e := casted.Unwrap()
+		if nil != e {
+			t.Errorf("Expected the .Unwrap() to return nil but it actually didn't.")
+			t.Logf("ERROR: (%T) %s", e, e)
+			return
+		}
+	}
+
+	{
+		expected := code
+		actual := casted.ErrHTTP()
+
+		if expected != actual {
+			t.Errorf("The actual HTTP status-code is not what was expected.")
+			t.Logf("EXPECTED: %d", expected)
+			t.Logf("ACTUAL:   %d", actual)
+			return
+		}
+	}
+
+	{
+		expected := http.StatusText(casted.ErrHTTP())
+		actual := err.Error()
+
+		if expected != actual {
+			t.Errorf("The actual error message was not what was expected.")
+			t.Logf("EXPECTED: %q", expected)
+			t.Logf("ACTUAL:   %q", actual)
+			return
+		}
+	}
+}

errunavailableforlegalreasons_test.go

@@ -0,0 +1,49 @@
+package errhttp_test
+
+import (
+	"testing"
+
+	"net/http"
+
+	"sourcecode.social/reiver/go-errhttp"
+)
+
+func TestErrUnavailableForLegalReasons(t *testing.T) {
+
+	var err error =   errhttp.ErrUnavailableForLegalReasons
+	casted       := err.(errhttp.UnavailableForLegalReasons)
+	var code int  =   http.StatusUnavailableForLegalReasons
+
+	{
+		e := casted.Unwrap()
+		if nil != e {
+			t.Errorf("Expected the .Unwrap() to return nil but it actually didn't.")
+			t.Logf("ERROR: (%T) %s", e, e)
+			return
+		}
+	}
+
+	{
+		expected := code
+		actual := casted.ErrHTTP()
+
+		if expected != actual {
+			t.Errorf("The actual HTTP status-code is not what was expected.")
+			t.Logf("EXPECTED: %d", expected)
+			t.Logf("ACTUAL:   %d", actual)
+			return
+		}
+	}
+
+	{
+		expected := http.StatusText(casted.ErrHTTP())
+		actual := err.Error()
+
+		if expected != actual {
+			t.Errorf("The actual error message was not what was expected.")
+			t.Logf("EXPECTED: %q", expected)
+			t.Logf("ACTUAL:   %q", actual)
+			return
+		}
+	}
+}

errunprocessableentity_test.go

@@ -0,0 +1,49 @@
+package errhttp_test
+
+import (
+	"testing"
+
+	"net/http"
+
+	"sourcecode.social/reiver/go-errhttp"
+)
+
+func TestErrUnprocessableEntity(t *testing.T) {
+
+	var err error =   errhttp.ErrUnprocessableEntity
+	casted       := err.(errhttp.UnprocessableEntity)
+	var code int  =   http.StatusUnprocessableEntity
+
+	{
+		e := casted.Unwrap()
+		if nil != e {
+			t.Errorf("Expected the .Unwrap() to return nil but it actually didn't.")
+			t.Logf("ERROR: (%T) %s", e, e)
+			return
+		}
+	}
+
+	{
+		expected := code
+		actual := casted.ErrHTTP()
+
+		if expected != actual {
+			t.Errorf("The actual HTTP status-code is not what was expected.")
+			t.Logf("EXPECTED: %d", expected)
+			t.Logf("ACTUAL:   %d", actual)
+			return
+		}
+	}
+
+	{
+		expected := http.StatusText(casted.ErrHTTP())
+		actual := err.Error()
+
+		if expected != actual {
+			t.Errorf("The actual error message was not what was expected.")
+			t.Logf("EXPECTED: %q", expected)
+			t.Logf("ACTUAL:   %q", actual)
+			return
+		}
+	}
+}

errunsupportedmediatype_test.go

@@ -0,0 +1,49 @@
+package errhttp_test
+
+import (
+	"testing"
+
+	"net/http"
+
+	"sourcecode.social/reiver/go-errhttp"
+)
+
+func TestErrUnsupportedMediaType(t *testing.T) {
+
+	var err error =   errhttp.ErrUnsupportedMediaType
+	casted       := err.(errhttp.UnsupportedMediaType)
+	var code int  =   http.StatusUnsupportedMediaType
+
+	{
+		e := casted.Unwrap()
+		if nil != e {
+			t.Errorf("Expected the .Unwrap() to return nil but it actually didn't.")
+			t.Logf("ERROR: (%T) %s", e, e)
+			return
+		}
+	}
+
+	{
+		expected := code
+		actual := casted.ErrHTTP()
+
+		if expected != actual {
+			t.Errorf("The actual HTTP status-code is not what was expected.")
+			t.Logf("EXPECTED: %d", expected)
+			t.Logf("ACTUAL:   %d", actual)
+			return
+		}
+	}
+
+	{
+		expected := http.StatusText(casted.ErrHTTP())
+		actual := err.Error()
+
+		if expected != actual {
+			t.Errorf("The actual error message was not what was expected.")
+			t.Logf("EXPECTED: %q", expected)
+			t.Logf("ACTUAL:   %q", actual)
+			return
+		}
+	}
+}

errupgraderequired_test.go

@@ -0,0 +1,49 @@
+package errhttp_test
+
+import (
+	"testing"
+
+	"net/http"
+
+	"sourcecode.social/reiver/go-errhttp"
+)
+
+func TestErrUpgradeRequired(t *testing.T) {
+
+	var err error =   errhttp.ErrUpgradeRequired
+	casted       := err.(errhttp.UpgradeRequired)
+	var code int  =   http.StatusUpgradeRequired
+
+	{
+		e := casted.Unwrap()
+		if nil != e {
+			t.Errorf("Expected the .Unwrap() to return nil but it actually didn't.")
+			t.Logf("ERROR: (%T) %s", e, e)
+			return
+		}
+	}
+
+	{
+		expected := code
+		actual := casted.ErrHTTP()
+
+		if expected != actual {
+			t.Errorf("The actual HTTP status-code is not what was expected.")
+			t.Logf("EXPECTED: %d", expected)
+			t.Logf("ACTUAL:   %d", actual)
+			return
+		}
+	}
+
+	{
+		expected := http.StatusText(casted.ErrHTTP())
+		actual := err.Error()
+
+		if expected != actual {
+			t.Errorf("The actual error message was not what was expected.")
+			t.Logf("EXPECTED: %q", expected)
+			t.Logf("ACTUAL:   %q", actual)
+			return
+		}
+	}
+}

errvariantalsonegotiates_test.go

@@ -0,0 +1,49 @@
+package errhttp_test
+
+import (
+	"testing"
+
+	"net/http"
+
+	"sourcecode.social/reiver/go-errhttp"
+)
+
+func TestErrVariantAlsoNegotiates(t *testing.T) {
+
+	var err error =   errhttp.ErrVariantAlsoNegotiates
+	casted       := err.(errhttp.VariantAlsoNegotiates)
+	var code int  =   http.StatusVariantAlsoNegotiates
+
+	{
+		e := casted.Unwrap()
+		if nil != e {
+			t.Errorf("Expected the .Unwrap() to return nil but it actually didn't.")
+			t.Logf("ERROR: (%T) %s", e, e)
+			return
+		}
+	}
+
+	{
+		expected := code
+		actual := casted.ErrHTTP()
+
+		if expected != actual {
+			t.Errorf("The actual HTTP status-code is not what was expected.")
+			t.Logf("EXPECTED: %d", expected)
+			t.Logf("ACTUAL:   %d", actual)
+			return
+		}
+	}
+
+	{
+		expected := http.StatusText(casted.ErrHTTP())
+		actual := err.Error()
+
+		if expected != actual {
+			t.Errorf("The actual error message was not what was expected.")
+			t.Logf("EXPECTED: %q", expected)
+			t.Logf("ACTUAL:   %q", actual)
+			return
+		}
+	}
+}

expectationfailed.go

@@ -26,7 +26,11 @@ func ExpectationFailedWrap(err error) error {
 }
 
 func (receiver internalExpectationFailed) Error() string {
-	return receiver.err.Error()
+	err := receiver.err
+	if nil == err {
+		return http.StatusText(receiver.ErrHTTP())
+	}
+	return err.Error()
 }
 
 func (internalExpectationFailed) ErrHTTP() int {

faileddependency.go

@@ -26,7 +26,11 @@ func FailedDependencyWrap(err error) error {
 }
 
 func (receiver internalFailedDependency) Error() string {
-	return receiver.err.Error()
+	err := receiver.err
+	if nil == err {
+		return http.StatusText(receiver.ErrHTTP())
+	}
+	return err.Error()
 }
 
 func (internalFailedDependency) ErrHTTP() int {

forbidden.go

@@ -26,7 +26,11 @@ func ForbiddenWrap(err error) error {
 }
 
 func (receiver internalForbidden) Error() string {
-	return receiver.err.Error()
+	err := receiver.err
+	if nil == err {
+		return http.StatusText(receiver.ErrHTTP())
+	}
+	return err.Error()
 }
 
 func (internalForbidden) ErrHTTP() int {

gatewaytimeout.go

@@ -28,7 +28,11 @@ func GatewayTimeoutWrap(err error) error {
 }
 
 func (receiver internalGatewayTimeout) Error() string {
-	return receiver.err.Error()
+	err := receiver.err
+	if nil == err {
+		return http.StatusText(receiver.ErrHTTP())
+	}
+	return err.Error()
 }
 
 func (internalGatewayTimeout) ErrHTTP() int {

gone.go

@@ -26,7 +26,11 @@ func GoneWrap(err error) error {
 }
 
 func (receiver internalGone) Error() string {
-	return receiver.err.Error()
+	err := receiver.err
+	if nil == err {
+		return http.StatusText(receiver.ErrHTTP())
+	}
+	return err.Error()
 }
 
 func (internalGone) ErrHTTP() int {

httpversionnotsupported.go

@@ -28,7 +28,11 @@ func HTTPVersionNotSupportedWrap(err error) error {
 }
 
 func (receiver internalHTTPVersionNotSupported) Error() string {
-	return receiver.err.Error()
+	err := receiver.err
+	if nil == err {
+		return http.StatusText(receiver.ErrHTTP())
+	}
+	return err.Error()
 }
 
 func (internalHTTPVersionNotSupported) ErrHTTP() int {

insufficientstorage.go

@@ -28,7 +28,11 @@ func InsufficientStorageWrap(err error) error {
 }
 
 func (receiver internalInsufficientStorage) Error() string {
-	return receiver.err.Error()
+	err := receiver.err
+	if nil == err {
+		return http.StatusText(receiver.ErrHTTP())
+	}
+	return err.Error()
 }
 
 func (internalInsufficientStorage) ErrHTTP() int {

internalservererror.go

@@ -28,7 +28,11 @@ func InternalServerErrorWrap(err error) error {
 }
 
 func (receiver internalInternalServerError) Error() string {
-	return receiver.err.Error()
+	err := receiver.err
+	if nil == err {
+		return http.StatusText(receiver.ErrHTTP())
+	}
+	return err.Error()
 }
 
 func (internalInternalServerError) ErrHTTP() int {

lengthrequired.go

@@ -26,7 +26,11 @@ func LengthRequiredWrap(err error) error {
 }
 
 func (receiver internalLengthRequired) Error() string {
-	return receiver.err.Error()
+	err := receiver.err
+	if nil == err {
+		return http.StatusText(receiver.ErrHTTP())
+	}
+	return err.Error()
 }
 
 func (internalLengthRequired) ErrHTTP() int {

locked.go

@@ -26,7 +26,11 @@ func LockedWrap(err error) error {
 }
 
 func (receiver internalLocked) Error() string {
-	return receiver.err.Error()
+	err := receiver.err
+	if nil == err {
+		return http.StatusText(receiver.ErrHTTP())
+	}
+	return err.Error()
 }
 
 func (internalLocked) ErrHTTP() int {

loopdetected.go

@@ -28,7 +28,11 @@ func LoopDetectedWrap(err error) error {
 }
 
 func (receiver internalLoopDetected) Error() string {
-	return receiver.err.Error()
+	err := receiver.err
+	if nil == err {
+		return http.StatusText(receiver.ErrHTTP())
+	}
+	return err.Error()
 }
 
 func (internalLoopDetected) ErrHTTP() int {

methodnotallowed.go

@@ -26,7 +26,11 @@ func MethodNotAllowedWrap(err error) error {
 }
 
 func (receiver internalMethodNotAllowed) Error() string {
-	return receiver.err.Error()
+	err := receiver.err
+	if nil == err {
+		return http.StatusText(receiver.ErrHTTP())
+	}
+	return err.Error()
 }
 
 func (internalMethodNotAllowed) ErrHTTP() int {

misdirectedrequest.go

@@ -8,7 +8,7 @@ var _ Error              = internalMisdirectedRequest{}
 var _ ClientError        = internalMisdirectedRequest{}
 var _ MisdirectedRequest = internalMisdirectedRequest{}
 
-var ErrMisdirectedRequest = MisdirectedRequestWrap(nil)
+var ErrMisdirectedRequest error = MisdirectedRequestWrap(nil)
 
 type MisdirectedRequest interface {
 	ClientError
@@ -26,7 +26,11 @@ func MisdirectedRequestWrap(err error) error {
 }
 
 func (receiver internalMisdirectedRequest) Error() string {
-	return receiver.err.Error()
+	err := receiver.err
+	if nil == err {
+		return http.StatusText(receiver.ErrHTTP())
+	}
+	return err.Error()
 }
 
 func (internalMisdirectedRequest) ErrHTTP() int {

networkauthenticationrequired.go

@@ -28,7 +28,11 @@ func NetworkAuthenticationRequiredWrap(err error) error {
 }
 
 func (receiver internalNetworkAuthenticationRequired) Error() string {
-	return receiver.err.Error()
+	err := receiver.err
+	if nil == err {
+		return http.StatusText(receiver.ErrHTTP())
+	}
+	return err.Error()
 }
 
 func (internalNetworkAuthenticationRequired) ErrHTTP() int {

notacceptable.go

@@ -26,6 +26,10 @@ func NotAcceptableWrap(err error) error {
 }
 
 func (receiver internalNotAcceptable) Error() string {
+	err := receiver.err
+	if nil == err {
+		return http.StatusText(receiver.ErrHTTP())
+	}
 	return receiver.err.Error()
 }
 

notextended.go

@@ -28,7 +28,11 @@ func NotExtendedWrap(err error) error {
 }
 
 func (receiver internalNotExtended) Error() string {
-	return receiver.err.Error()
+	err := receiver.err
+	if nil == err {
+		return http.StatusText(receiver.ErrHTTP())
+	}
+	return err.Error()
 }
 
 func (internalNotExtended) ErrHTTP() int {

notfound.go

@@ -25,19 +25,23 @@ func NotFoundWrap(err error) error {
 	}
 }
 
-func (receiver internalNotFound ) Error() string {
-	return receiver.err.Error()
+func (receiver internalNotFound) Error() string {
+	err := receiver.err
+	if nil == err {
+		return http.StatusText(receiver.ErrHTTP())
+	}
+	return err.Error()
 }
 
-func (internalNotFound ) ErrHTTP() int {
+func (internalNotFound) ErrHTTP() int {
 	return http.StatusNotFound
 }
 
-func (internalNotFound ) ClientError() {
+func (internalNotFound) ClientError() {
 	// Nothing here.
 }
 
-func (internalNotFound ) NotFound() {
+func (internalNotFound) NotFound() {
 	// Nothing here.
 }
 

notimplemented.go

@@ -28,7 +28,11 @@ func NotImplementedWrap(err error) error {
 }
 
 func (receiver internalNotImplemented) Error() string {
-	return receiver.err.Error()
+	err := receiver.err
+	if nil == err {
+		return http.StatusText(receiver.ErrHTTP())
+	}
+	return err.Error()
 }
 
 func (internalNotImplemented) ErrHTTP() int {

paymentrequired.go

@@ -26,7 +26,11 @@ func PaymentRequiredWrap(err error) error {
 }
 
 func (receiver internalPaymentRequired) Error() string {
-	return receiver.err.Error()
+	err := receiver.err
+	if nil == err {
+		return http.StatusText(receiver.ErrHTTP())
+	}
+	return err.Error()
 }
 
 func (internalPaymentRequired) ErrHTTP() int {

preconditionfailed.go

@@ -26,7 +26,11 @@ func PreconditionFailedWrap(err error) error {
 }
 
 func (receiver internalPreconditionFailed) Error() string {
-	return receiver.err.Error()
+	err := receiver.err
+	if nil == err {
+		return http.StatusText(receiver.ErrHTTP())
+	}
+	return err.Error()
 }
 
 func (internalPreconditionFailed) ErrHTTP() int {

preconditionrequired.go

@@ -26,7 +26,11 @@ func PreconditionRequiredWrap(err error) error {
 }
 
 func (receiver internalPreconditionRequired) Error() string {
-	return receiver.err.Error()
+	err := receiver.err
+	if nil == err {
+		return http.StatusText(receiver.ErrHTTP())
+	}
+	return err.Error()
 }
 
 func (internalPreconditionRequired) ErrHTTP() int {

proxyauthrequired.go

@@ -26,7 +26,11 @@ func ProxyAuthRequiredWrap(err error) error {
 }
 
 func (receiver internalProxyAuthRequired) Error() string {
-	return receiver.err.Error()
+	err := receiver.err
+	if nil == err {
+		return http.StatusText(receiver.ErrHTTP())
+	}
+	return err.Error()
 }
 
 func (internalProxyAuthRequired) ErrHTTP() int {

requestedrangenotsatisfiable.go

@@ -26,7 +26,11 @@ func RequestedRangeNotSatisfiableWrap(err error) error {
 }
 
 func (receiver internalRequestedRangeNotSatisfiable) Error() string {
-	return receiver.err.Error()
+	err := receiver.err
+	if nil == err {
+		return http.StatusText(receiver.ErrHTTP())
+	}
+	return err.Error()
 }
 
 func (internalRequestedRangeNotSatisfiable) ErrHTTP() int {

requestentitytoolarge.go

@@ -26,7 +26,11 @@ func RequestEntityTooLargeWrap(err error) error {
 }
 
 func (receiver internalRequestEntityTooLarge) Error() string {
-	return receiver.err.Error()
+	err := receiver.err
+	if nil == err {
+		return http.StatusText(receiver.ErrHTTP())
+	}
+	return err.Error()
 }
 
 func (internalRequestEntityTooLarge) ErrHTTP() int {

requestheaderfieldstoolarge.go

@@ -26,7 +26,11 @@ func RequestHeaderFieldsTooLargeWrap(err error) error {
 }
 
 func (receiver internalRequestHeaderFieldsTooLarge) Error() string {
-	return receiver.err.Error()
+	err := receiver.err
+	if nil == err {
+	return http.StatusText(receiver.ErrHTTP())
+	}
+	return err.Error()
 }
 
 func (internalRequestHeaderFieldsTooLarge) ErrHTTP() int {

requesttimeout.go

@@ -26,7 +26,11 @@ func RequestTimeoutWrap(err error) error {
 }
 
 func (receiver internalRequestTimeout) Error() string {
-	return receiver.err.Error()
+	err := receiver.err
+	if nil == err {
+		return http.StatusText(receiver.ErrHTTP())
+	}
+	return err.Error()
 }
 
 func (internalRequestTimeout) ErrHTTP() int {

requesturitoolong.go

@@ -26,7 +26,11 @@ func RequestURITooLongWrap(err error) error {
 }
 
 func (receiver internalRequestURITooLong) Error() string {
-	return receiver.err.Error()
+	err := receiver.err
+	if nil == err {
+		return http.StatusText(receiver.ErrHTTP())
+	}
+	return err.Error()
 }
 
 func (internalRequestURITooLong) ErrHTTP() int {

serviceunavailable.go

@@ -26,7 +26,11 @@ func ServiceUnavailableWrap(err error) error {
 }
 
 func (receiver internalServiceUnavailable) Error() string {
-	return receiver.err.Error()
+	err := receiver.err
+	if nil == err {
+		return http.StatusText(receiver.ErrHTTP())
+	}
+	return err.Error()
 }
 
 func (internalServiceUnavailable) ErrHTTP() int {

teapot.go

@@ -26,7 +26,11 @@ func TeapotWrap(err error) error {
 }
 
 func (receiver internalTeapot) Error() string {
-	return receiver.err.Error()
+	err := receiver.err
+	if nil == err {
+		return http.StatusText(receiver.ErrHTTP())
+	}
+	return err.Error()
 }
 
 func (internalTeapot) ErrHTTP() int {

tooearly.go

@@ -8,7 +8,7 @@ var _ Error       = internalTooEarly{}
 var _ ClientError = internalTooEarly{}
 var _ TooEarly    = internalTooEarly{}
 
-var ErrTooEarly = TooEarlyWrap(nil)
+var ErrTooEarly error = TooEarlyWrap(nil)
 
 type TooEarly interface {
 	ClientError
@@ -26,7 +26,11 @@ func TooEarlyWrap(err error) error {
 }
 
 func (receiver internalTooEarly) Error() string {
-	return receiver.err.Error()
+	err := receiver.err
+	if nil == err {
+		return http.StatusText(receiver.ErrHTTP())
+	}
+	return err.Error()
 }
 
 func (internalTooEarly) ErrHTTP() int {

toomanyrequests.go

@@ -26,7 +26,11 @@ func TooManyRequestsWrap(err error) error {
 }
 
 func (receiver internalTooManyRequests) Error() string {
-	return receiver.err.Error()
+	err := receiver.err
+	if nil == err {
+		return http.StatusText(receiver.ErrHTTP())
+	}
+	return err.Error()
 }
 
 func (internalTooManyRequests) ErrHTTP() int {

unauthorized.go

@@ -26,7 +26,11 @@ func UnauthorizedWrap(err error) error {
 }
 
 func (receiver internalUnauthorized) Error() string {
-	return receiver.err.Error()
+	err := receiver.err
+	if nil == err {
+		return http.StatusText(receiver.ErrHTTP())
+	}
+	return err.Error()
 }
 
 func (internalUnauthorized) ErrHTTP() int {

unavailableforlegalreasons.go

@@ -26,7 +26,11 @@ func UnavailableForLegalReasonsWrap(err error) error {
 }
 
 func (receiver internalUnavailableForLegalReasons) Error() string {
-	return receiver.err.Error()
+	err := receiver.err
+	if nil == err {
+		return http.StatusText(receiver.ErrHTTP())
+	}
+	return err.Error()
 }
 
 func (internalUnavailableForLegalReasons) ErrHTTP() int {

unprocessableentity.go

@@ -26,7 +26,11 @@ func UnprocessableEntityWrap(err error) error {
 }
 
 func (receiver internalUnprocessableEntity) Error() string {
-	return receiver.err.Error()
+	err := receiver.err
+	if nil == err {
+		return http.StatusText(receiver.ErrHTTP())
+	}
+	return err.Error()
 }
 
 func (internalUnprocessableEntity) ErrHTTP() int {

unsupportedmediatype.go

@@ -26,7 +26,11 @@ func UnsupportedMediaTypeWrap(err error) error {
 }
 
 func (receiver internalUnsupportedMediaType) Error() string {
-	return receiver.err.Error()
+	err := receiver.err
+	if nil == err {
+		return http.StatusText(receiver.ErrHTTP())
+	}
+	return err.Error()
 }
 
 func (internalUnsupportedMediaType) ErrHTTP() int {

upgraderequired.go

@@ -26,7 +26,11 @@ func UpgradeRequiredWrap(err error) error {
 }
 
 func (receiver internalUpgradeRequired) Error() string {
-	return receiver.err.Error()
+	err := receiver.err
+	if nil == err {
+		return http.StatusText(receiver.ErrHTTP())
+	}
+	return err.Error()
 }
 
 func (internalUpgradeRequired) ErrHTTP() int {

variantalsonegotiates.go

@@ -28,7 +28,11 @@ func VariantAlsoNegotiatesWrap(err error) error {
 }
 
 func (receiver internalVariantAlsoNegotiates) Error() string {
-	return receiver.err.Error()
+	err := receiver.err
+	if nil == err {
+		return http.StatusText(receiver.ErrHTTP())
+	}
+	return err.Error()
 }
 
 func (internalVariantAlsoNegotiates) ErrHTTP() int {