removed Err() method. deal with internal type fitting interface in another way (other than a unit test)

badgateway.go

@@ -4,6 +4,9 @@ import (
 	"errors"
 )
 
+var _ Error      = internalBadGateway{}
+var _ BadGateway = internalBadGateway{}
+
 var ErrBadGateway error = BadGatewayWrap(errors.New("Bad Gateway"))
 
 type BadGateway interface {
@@ -27,10 +30,6 @@ func (receiver internalBadGateway) Error() string {
 	return receiver.err.Error()
 }
 
-func (receiver internalBadGateway) Err() error {
-	return receiver.err
-}
-
 func (internalBadGateway) ErrHTTP() {
 	// Nothing here.
 }

badrequest.go

@@ -4,6 +4,9 @@ import (
 	"errors"
 )
 
+var _ Error      = internalBadRequest{}
+var _ BadRequest = internalBadRequest{}
+
 var ErrBadRequest = BadRequestWrap(errors.New("Bad Request"))
 
 type BadRequest interface {
@@ -25,10 +28,6 @@ func (receiver internalBadRequest) Error() string {
 	return receiver.err.Error()
 }
 
-func (receiver internalBadRequest) Err() error {
-	return receiver.err
-}
-
 func (internalBadRequest) ErrHTTP() {
 	// Nothing here.
 }

badrequest_test.go

@@ -1,14 +0,0 @@
-package errhttp
-
-import (
-	"testing"
-)
-
-func TestBadRequest(t *testing.T) {
-
-	var x BadRequest = internalBadRequest{} // THIS IS THE LINE THAT ACTUALLY MATTERS IN THIS TEST.
-
-	if nil == x {
-		t.Errorf("This should not happen.")
-	}
-}

conflict.go

@@ -4,6 +4,9 @@ import (
 	"errors"
 )
 
+var _ Error    = internalConflict{}
+var _ Conflict = internalConflict{}
+
 var ErrConflict = ConflictWrap(errors.New("Conflict"))
 
 type Conflict interface {
@@ -25,10 +28,6 @@ func (receiver internalConflict) Error() string {
 	return receiver.err.Error()
 }
 
-func (receiver internalConflict) Err() error {
-	return receiver.err
-}
-
 func (internalConflict) ErrHTTP() {
 	// Nothing here.
 }

conflict_test.go

@@ -1,14 +0,0 @@
-package errhttp
-
-import (
-	"testing"
-)
-
-func TestConflict(t *testing.T) {
-
-	var x Conflict = internalConflict{} // THIS IS THE LINE THAT ACTUALLY MATTERS IN THIS TEST.
-
-	if nil == x {
-		t.Errorf("This should not happen.")
-	}
-}

error.go

@@ -2,7 +2,6 @@ package errhttp
 
 type Error interface {
 	error
-	Err() error
 	ErrHTTP()
 	Unwrap() error
 }

expectationfailed.go

@@ -4,6 +4,9 @@ import (
 	"errors"
 )
 
+var _ Error             = internalExpectationFailed{}
+var _ ExpectationFailed = internalExpectationFailed{}
+
 var ErrExpectationFailed error = ExpectationFailedWrap(errors.New("Expectation Failed"))
 
 type ExpectationFailed interface {
@@ -25,10 +28,6 @@ func (receiver internalExpectationFailed) Error() string {
 	return receiver.err.Error()
 }
 
-func (receiver internalExpectationFailed) Err() error {
-	return receiver.err
-}
-
 func (internalExpectationFailed) ErrHTTP() {
 	// Nothing here.
 }

expectationfailed_test.go

@@ -1,14 +0,0 @@
-package errhttp
-
-import (
-	"testing"
-)
-
-func TestExpectationFailed(t *testing.T) {
-
-	var x ExpectationFailed = internalExpectationFailed{} // THIS IS THE LINE THAT ACTUALLY MATTERS IN THIS TEST.
-
-	if nil == x {
-		t.Errorf("This should not happen.")
-	}
-}

faileddependency.go

@@ -4,6 +4,9 @@ import (
 	"errors"
 )
 
+var _ Error            = internalFailedDependency{}
+var _ FailedDependency = internalFailedDependency{}
+
 var ErrFailedDependency error = FailedDependencyWrap(errors.New("Failed Dependency"))
 
 type FailedDependency interface {
@@ -25,10 +28,6 @@ func (receiver internalFailedDependency) Error() string {
 	return receiver.err.Error()
 }
 
-func (receiver internalFailedDependency) Err() error {
-	return receiver.err
-}
-
 func (internalFailedDependency) ErrHTTP() {
 	// Nothing here.
 }

faileddependency_test.go

@@ -1,14 +0,0 @@
-package errhttp
-
-import (
-	"testing"
-)
-
-func TestFailedDependency(t *testing.T) {
-
-	var x FailedDependency = internalFailedDependency{} // THIS IS THE LINE THAT ACTUALLY MATTERS IN THIS TEST.
-
-	if nil == x {
-		t.Errorf("This should not happen.")
-	}
-}

forbidden.go

@@ -4,6 +4,9 @@ import (
 	"errors"
 )
 
+var _ Error     = internalForbidden{}
+var _ Forbidden = internalForbidden{}
+
 var ErrForbidden error = ForbiddenWrap(errors.New("Forbidden"))
 
 type Forbidden interface {
@@ -25,10 +28,6 @@ func (receiver internalForbidden) Error() string {
 	return receiver.err.Error()
 }
 
-func (receiver internalForbidden) Err() error {
-	return receiver.err
-}
-
 func (internalForbidden) ErrHTTP() {
 	// Nothing here.
 }

forbidden_test.go

@@ -1,14 +0,0 @@
-package errhttp
-
-import (
-	"testing"
-)
-
-func TestForbidden(t *testing.T) {
-
-	var x Forbidden = internalForbidden{} // THIS IS THE LINE THAT ACTUALLY MATTERS IN THIS TEST.
-
-	if nil == x {
-		t.Errorf("This should not happen.")
-	}
-}

gatewaytimeout.go

@@ -4,6 +4,9 @@ import (
 	"errors"
 )
 
+var _ Error          = internalGatewayTimeout{}
+var _ GatewayTimeout = internalGatewayTimeout{}
+
 var ErrGatewayTimeout error = GatewayTimeoutWrap(errors.New("Gateway Timeout"))
 
 type GatewayTimeout interface {
@@ -27,10 +30,6 @@ func (receiver internalGatewayTimeout) Error() string {
 	return receiver.err.Error()
 }
 
-func (receiver internalGatewayTimeout) Err() error {
-	return receiver.err
-}
-
 func (internalGatewayTimeout) ErrHTTP() {
 	// Nothing here.
 }

gone.go

@@ -4,6 +4,9 @@ import (
 	"errors"
 )
 
+var _ Error = internalGone{}
+var _ Gone  = internalGone{}
+
 var ErrGone error = GoneWrap(errors.New("Gone"))
 
 type Gone interface {
@@ -25,10 +28,6 @@ func (receiver internalGone) Error() string {
 	return receiver.err.Error()
 }
 
-func (receiver internalGone) Err() error {
-	return receiver.err
-}
-
 func (internalGone) ErrHTTP() {
 	// Nothing here.
 }

gone_test.go

@@ -1,14 +0,0 @@
-package errhttp
-
-import (
-	"testing"
-)
-
-func TestGone(t *testing.T) {
-
-	var x Gone = internalGone{} // THIS IS THE LINE THAT ACTUALLY MATTERS IN THIS TEST.
-
-	if nil == x {
-		t.Errorf("This should not happen.")
-	}
-}

httpversionnotsupported.go

@@ -4,6 +4,9 @@ import (
 	"errors"
 )
 
+var _ Error                   = internalHTTPVersionNotSupported{}
+var _ HTTPVersionNotSupported = internalHTTPVersionNotSupported{}
+
 var ErrHTTPVersionNotSupported error = HTTPVersionNotSupportedWrap(errors.New("HTTP Version Not Supported"))
 
 type HTTPVersionNotSupported interface {
@@ -27,10 +30,6 @@ func (receiver internalHTTPVersionNotSupported) Error() string {
 	return receiver.err.Error()
 }
 
-func (receiver internalHTTPVersionNotSupported) Err() error {
-	return receiver.err
-}
-
 func (internalHTTPVersionNotSupported) ErrHTTP() {
 	// Nothing here.
 }

insufficientstorage.go

@@ -4,6 +4,9 @@ import (
 	"errors"
 )
 
+var _ Error               = internalInsufficientStorage{}
+var _ InsufficientStorage = internalInsufficientStorage{}
+
 var ErrInsufficientStorage error = InsufficientStorageWrap(errors.New("Insufficient Storage"))
 
 type InsufficientStorage interface {
@@ -27,10 +30,6 @@ func (receiver internalInsufficientStorage) Error() string {
 	return receiver.err.Error()
 }
 
-func (receiver internalInsufficientStorage) Err() error {
-	return receiver.err
-}
-
 func (internalInsufficientStorage) ErrHTTP() {
 	// Nothing here.
 }

internalservererror.go

@@ -4,6 +4,9 @@ import (
 	"errors"
 )
 
+var _ Error               = internalInternalServerError{}
+var _ InternalServerError = internalInternalServerError{}
+
 var ErrInternalServerError error = InternalServerErrorWrap(errors.New("Internal Server Error"))
 
 type InternalServerError interface {
@@ -27,10 +30,6 @@ func (receiver internalInternalServerError) Error() string {
 	return receiver.err.Error()
 }
 
-func (receiver internalInternalServerError) Err() error {
-	return receiver.err
-}
-
 func (internalInternalServerError) ErrHTTP() {
 	// Nothing here.
 }

lengthrequired.go

@@ -4,6 +4,9 @@ import (
 	"errors"
 )
 
+var _ Error          = internalLengthRequired{}
+var _ LengthRequired = internalLengthRequired{}
+
 var ErrLengthRequired error = LengthRequiredWrap(errors.New("Length Required"))
 
 type LengthRequired interface {
@@ -25,10 +28,6 @@ func (receiver internalLengthRequired) Error() string {
 	return receiver.err.Error()
 }
 
-func (receiver internalLengthRequired) Err() error {
-	return receiver.err
-}
-
 func (internalLengthRequired) ErrHTTP() {
 	// Nothing here.
 }

lengthrequired_test.go

@@ -1,14 +0,0 @@
-package errhttp
-
-import (
-	"testing"
-)
-
-func TestLengthRequired(t *testing.T) {
-
-	var x LengthRequired = internalLengthRequired{} // THIS IS THE LINE THAT ACTUALLY MATTERS IN THIS TEST.
-
-	if nil == x {
-		t.Errorf("This should not happen.")
-	}
-}

locked.go

@@ -4,6 +4,9 @@ import (
 	"errors"
 )
 
+var _ Error  = internalLocked{}
+var _ Locked = internalLocked{}
+
 var ErrLocked error = LockedWrap(errors.New("Locked"))
 
 type Locked interface {
@@ -25,10 +28,6 @@ func (receiver internalLocked) Error() string {
 	return receiver.err.Error()
 }
 
-func (receiver internalLocked) Err() error {
-	return receiver.err
-}
-
 func (internalLocked) ErrHTTP() {
 	// Nothing here.
 }

locked_test.go

@@ -1,14 +0,0 @@
-package errhttp
-
-import (
-	"testing"
-)
-
-func TestLocked(t *testing.T) {
-
-	var x Locked = internalLocked{} // THIS IS THE LINE THAT ACTUALLY MATTERS IN THIS TEST.
-
-	if nil == x {
-		t.Errorf("This should not happen.")
-	}
-}

loopdetected.go

@@ -4,6 +4,9 @@ import (
 	"errors"
 )
 
+var _ Error        = internalLoopDetected{}
+var _ LoopDetected = internalLoopDetected{}
+
 var ErrLoopDetected error = LoopDetectedWrap(errors.New("Loop Detected"))
 
 type LoopDetected interface {
@@ -27,10 +30,6 @@ func (receiver internalLoopDetected) Error() string {
 	return receiver.err.Error()
 }
 
-func (receiver internalLoopDetected) Err() error {
-	return receiver.err
-}
-
 func (internalLoopDetected) ErrHTTP() {
 	// Nothing here.
 }

methodnotallowed.go

@@ -4,6 +4,9 @@ import (
 	"errors"
 )
 
+var _ Error            = internalMethodNotAllowed{}
+var _ MethodNotAllowed = internalMethodNotAllowed{}
+
 var ErrMethodNotAllowed error = MethodNotAllowedWrap(errors.New("Method Not Allowed"))
 
 type MethodNotAllowed interface {
@@ -25,10 +28,6 @@ func (receiver internalMethodNotAllowed) Error() string {
 	return receiver.err.Error()
 }
 
-func (receiver internalMethodNotAllowed) Err() error {
-	return receiver.err
-}
-
 func (internalMethodNotAllowed) ErrHTTP() {
 	// Nothing here.
 }

methodnotallowed_test.go

@@ -1,14 +0,0 @@
-package errhttp
-
-import (
-	"testing"
-)
-
-func TestMethodNotAllowed(t *testing.T) {
-
-	var x MethodNotAllowed = internalMethodNotAllowed{} // THIS IS THE LINE THAT ACTUALLY MATTERS IN THIS TEST.
-
-	if nil == x {
-		t.Errorf("This should not happen.")
-	}
-}

networkauthenticationrequired.go

@@ -4,6 +4,9 @@ import (
 	"errors"
 )
 
+var _ Error                         = internalNetworkAuthenticationRequired{}
+var _ NetworkAuthenticationRequired = internalNetworkAuthenticationRequired{}
+
 var ErrNetworkAuthenticationRequired error = NetworkAuthenticationRequiredWrap(errors.New("Network Authentication Required"))
 
 type NetworkAuthenticationRequired interface {
@@ -27,10 +30,6 @@ func (receiver internalNetworkAuthenticationRequired) Error() string {
 	return receiver.err.Error()
 }
 
-func (receiver internalNetworkAuthenticationRequired) Err() error {
-	return receiver.err
-}
-
 func (internalNetworkAuthenticationRequired) ErrHTTP() {
 	// Nothing here.
 }

notacceptable.go

@@ -4,6 +4,9 @@ import (
 	"errors"
 )
 
+var _ Error         = internalNotAcceptable{}
+var _ NotAcceptable = internalNotAcceptable{}
+
 var ErrNotAcceptable error = NotAcceptableWrap(errors.New("Not Acceptable"))
 
 type NotAcceptable interface {
@@ -25,10 +28,6 @@ func (receiver internalNotAcceptable) Error() string {
 	return receiver.err.Error()
 }
 
-func (receiver internalNotAcceptable) Err() error {
-	return receiver.err
-}
-
 func (internalNotAcceptable) ErrHTTP() {
 	// Nothing here.
 }

notacceptable_test.go

@@ -1,14 +0,0 @@
-package errhttp
-
-import (
-	"testing"
-)
-
-func TestNotAcceptable(t *testing.T) {
-
-	var x NotAcceptable = internalNotAcceptable{} // THIS IS THE LINE THAT ACTUALLY MATTERS IN THIS TEST.
-
-	if nil == x {
-		t.Errorf("This should not happen.")
-	}
-}

notextended.go

@@ -4,6 +4,9 @@ import (
 	"errors"
 )
 
+var _ Error       = internalNotExtended{}
+var _ NotExtended = internalNotExtended{}
+
 var ErrNotExtended error = NotExtendedWrap(errors.New("Not Extended"))
 
 type NotExtended interface {
@@ -27,10 +30,6 @@ func (receiver internalNotExtended) Error() string {
 	return receiver.err.Error()
 }
 
-func (receiver internalNotExtended) Err() error {
-	return receiver.err
-}
-
 func (internalNotExtended) ErrHTTP() {
 	// Nothing here.
 }

notfound.go

@@ -4,6 +4,9 @@ import (
 	"errors"
 )
 
+var _ Error    = internalNotFound{}
+var _ NotFound = internalNotFound{}
+
 var ErrNotFound error = NotFoundWrap(errors.New("Not Found"))
 
 type NotFound  interface {
@@ -11,7 +14,7 @@ type NotFound  interface {
 	NotFound ()
 }
 
-type internalNotFound  struct {
+type internalNotFound struct {
 	err error
 }
 
@@ -25,10 +28,6 @@ func (receiver internalNotFound ) Error() string {
 	return receiver.err.Error()
 }
 
-func (receiver internalNotFound ) Err() error {
-	return receiver.err
-}
-
 func (internalNotFound ) ErrHTTP() {
 	// Nothing here.
 }

notfound_test.go

@@ -1,14 +0,0 @@
-package errhttp
-
-import (
-	"testing"
-)
-
-func TestNotFound(t *testing.T) {
-
-	var x NotFound = internalNotFound{} // THIS IS THE LINE THAT ACTUALLY MATTERS IN THIS TEST.
-
-	if nil == x {
-		t.Errorf("This should not happen.")
-	}
-}

notimplemented.go

@@ -4,6 +4,9 @@ import (
 	"errors"
 )
 
+var _ Error          = internalNotImplemented{}
+var _ NotImplemented = internalNotImplemented{}
+
 var ErrNotImplemented error = NotImplementedWrap(errors.New("Not Implemented"))
 
 type NotImplemented interface {
@@ -27,10 +30,6 @@ func (receiver internalNotImplemented) Error() string {
 	return receiver.err.Error()
 }
 
-func (receiver internalNotImplemented) Err() error {
-	return receiver.err
-}
-
 func (internalNotImplemented) ErrHTTP() {
 	// Nothing here.
 }

payloadtoolarge.go

@@ -4,6 +4,9 @@ import (
 	"errors"
 )
 
+var _ Error           = internalPayloadTooLarge{}
+var _ PayloadTooLarge = internalPayloadTooLarge{}
+
 var ErrPayloadTooLarge error = PayloadTooLargeWrap(errors.New("Payload Too Large"))
 
 type PayloadTooLarge interface {
@@ -25,10 +28,6 @@ func (receiver internalPayloadTooLarge) Error() string {
 	return receiver.err.Error()
 }
 
-func (receiver internalPayloadTooLarge) Err() error {
-	return receiver.err
-}
-
 func (internalPayloadTooLarge) ErrHTTP() {
 	// Nothing here.
 }

payloadtoolarge_test.go

@@ -1,14 +0,0 @@
-package errhttp
-
-import (
-	"testing"
-)
-
-func TestPayloadTooLarge(t *testing.T) {
-
-	var x PayloadTooLarge = internalPayloadTooLarge{} // THIS IS THE LINE THAT ACTUALLY MATTERS IN THIS TEST.
-
-	if nil == x {
-		t.Errorf("This should not happen.")
-	}
-}

paymentrequired.go

@@ -4,6 +4,9 @@ import (
 	"errors"
 )
 
+var _ Error           = internalPaymentRequired{}
+var _ PaymentRequired = internalPaymentRequired{}
+
 var ErrPaymentRequired error = PaymentRequiredWrap(errors.New("Payment Required"))
 
 type PaymentRequired interface {
@@ -25,10 +28,6 @@ func (receiver internalPaymentRequired) Error() string {
 	return receiver.err.Error()
 }
 
-func (receiver internalPaymentRequired) Err() error {
-	return receiver.err
-}
-
 func (internalPaymentRequired) ErrHTTP() {
 	// Nothing here.
 }

paymentrequired_test.go

@@ -1,14 +0,0 @@
-package errhttp
-
-import (
-	"testing"
-)
-
-func TestPaymentRequired(t *testing.T) {
-
-	var x PaymentRequired = internalPaymentRequired{} // THIS IS THE LINE THAT ACTUALLY MATTERS IN THIS TEST.
-
-	if nil == x {
-		t.Errorf("This should not happen.")
-	}
-}

preconditionfailed.go

@@ -4,6 +4,9 @@ import (
 	"errors"
 )
 
+var _ Error              = internalPreconditionFailed{}
+var _ PreconditionFailed = internalPreconditionFailed{}
+
 var ErrPreconditionFailed error = PreconditionFailedWrap(errors.New("Precondition Failed"))
 
 type PreconditionFailed interface {
@@ -25,10 +28,6 @@ func (receiver internalPreconditionFailed) Error() string {
 	return receiver.err.Error()
 }
 
-func (receiver internalPreconditionFailed) Err() error {
-	return receiver.err
-}
-
 func (internalPreconditionFailed) ErrHTTP() {
 	// Nothing here.
 }

preconditionfailed_test.go

@@ -1,14 +0,0 @@
-package errhttp
-
-import (
-	"testing"
-)
-
-func TestPreconditionFailed(t *testing.T) {
-
-	var x PreconditionFailed = internalPreconditionFailed{} // THIS IS THE LINE THAT ACTUALLY MATTERS IN THIS TEST.
-
-	if nil == x {
-		t.Errorf("This should not happen.")
-	}
-}

preconditionrequired.go

@@ -4,6 +4,9 @@ import (
 	"errors"
 )
 
+var _ Error                = internalPreconditionRequired{}
+var _ PreconditionRequired = internalPreconditionRequired{}
+
 var ErrPreconditionRequired error = PreconditionRequiredWrap(errors.New("Precondition Required"))
 
 type PreconditionRequired interface {
@@ -25,10 +28,6 @@ func (receiver internalPreconditionRequired) Error() string {
 	return receiver.err.Error()
 }
 
-func (receiver internalPreconditionRequired) Err() error {
-	return receiver.err
-}
-
 func (internalPreconditionRequired) ErrHTTP() {
 	// Nothing here.
 }

preconditionrequired_test.go

@@ -1,14 +0,0 @@
-package errhttp
-
-import (
-	"testing"
-)
-
-func TestPreconditionRequired(t *testing.T) {
-
-	var x PreconditionRequired = internalPreconditionRequired{} // THIS IS THE LINE THAT ACTUALLY MATTERS IN THIS TEST.
-
-	if nil == x {
-		t.Errorf("This should not happen.")
-	}
-}

proxyauthrequired.go

@@ -4,6 +4,9 @@ import (
 	"errors"
 )
 
+var _ Error             = internalProxyAuthRequired{}
+var _ ProxyAuthRequired = internalProxyAuthRequired{}
+
 var ErrProxyAuthRequired error = ProxyAuthRequiredWrap(errors.New("Proxy Auth Required"))
 
 type ProxyAuthRequired interface {
@@ -25,10 +28,6 @@ func (receiver internalProxyAuthRequired) Error() string {
 	return receiver.err.Error()
 }
 
-func (receiver internalProxyAuthRequired) Err() error {
-	return receiver.err
-}
-
 func (internalProxyAuthRequired) ErrHTTP() {
 	// Nothing here.
 }

proxyauthrequired_test.go

@@ -1,14 +0,0 @@
-package errhttp
-
-import (
-	"testing"
-)
-
-func TestProxyAuthRequired(t *testing.T) {
-
-	var x ProxyAuthRequired = internalProxyAuthRequired{} // THIS IS THE LINE THAT ACTUALLY MATTERS IN THIS TEST.
-
-	if nil == x {
-		t.Errorf("This should not happen.")
-	}
-}

requestedrangenotsatisfiable.go

@@ -4,6 +4,9 @@ import (
 	"errors"
 )
 
+var _ Error                        = internalRequestedRangeNotSatisfiable{}
+var _ RequestedRangeNotSatisfiable = internalRequestedRangeNotSatisfiable{}
+
 var ErrRequestedRangeNotSatisfiable error = RequestedRangeNotSatisfiableWrap(errors.New("Requested Range Not Satisfiable"))
 
 type RequestedRangeNotSatisfiable interface {
@@ -25,10 +28,6 @@ func (receiver internalRequestedRangeNotSatisfiable) Error() string {
 	return receiver.err.Error()
 }
 
-func (receiver internalRequestedRangeNotSatisfiable) Err() error {
-	return receiver.err
-}
-
 func (internalRequestedRangeNotSatisfiable) ErrHTTP() {
 	// Nothing here.
 }

requestedrangenotsatisfiable_test.go

@@ -1,14 +0,0 @@
-package errhttp
-
-import (
-	"testing"
-)
-
-func TestRequestedRangeNotSatisfiable(t *testing.T) {
-
-	var x RequestedRangeNotSatisfiable = internalRequestedRangeNotSatisfiable{} // THIS IS THE LINE THAT ACTUALLY MATTERS IN THIS TEST.
-
-	if nil == x {
-		t.Errorf("This should not happen.")
-	}
-}

requestentitytoolarge.go

@@ -4,6 +4,9 @@ import (
 	"errors"
 )
 
+var _ Error                 = internalRequestEntityTooLarge{}
+var _ RequestEntityTooLarge = internalRequestEntityTooLarge{}
+
 var ErrRequestEntityTooLarge error = RequestEntityTooLargeWrap(errors.New("Request Entity Too Large"))
 
 type RequestEntityTooLarge interface {
@@ -25,10 +28,6 @@ func (receiver internalRequestEntityTooLarge) Error() string {
 	return receiver.err.Error()
 }
 
-func (receiver internalRequestEntityTooLarge) Err() error {
-	return receiver.err
-}
-
 func (internalRequestEntityTooLarge) ErrHTTP() {
 	// Nothing here.
 }

requestentitytoolarge_test.go

@@ -1,14 +0,0 @@
-package errhttp
-
-import (
-	"testing"
-)
-
-func TestRequestEntityTooLarge(t *testing.T) {
-
-	var x RequestEntityTooLarge = internalRequestEntityTooLarge{} // THIS IS THE LINE THAT ACTUALLY MATTERS IN THIS TEST.
-
-	if nil == x {
-		t.Errorf("This should not happen.")
-	}
-}

requestheaderfieldstoolarge.go

@@ -4,11 +4,13 @@ import (
 	"errors"
 )
 
+var _ Error                       = internalRequestHeaderFieldsTooLarge{}
+var _ RequestHeaderFieldsTooLarge = internalRequestHeaderFieldsTooLarge{}
+
 var ErrRequestHeaderFieldsTooLarge error = RequestHeaderFieldsTooLargeWrap(errors.New("RequestHeaderFieldsTooLarge"))
 
 type RequestHeaderFieldsTooLarge interface {
-	error
+	ClientError
-	Err() error
 	RequestHeaderFieldsTooLarge()
 }
 
@@ -26,10 +28,6 @@ func (receiver internalRequestHeaderFieldsTooLarge) Error() string {
 	return receiver.err.Error()
 }
 
-func (receiver internalRequestHeaderFieldsTooLarge) Err() error {
-	return receiver.err
-}
-
 func (internalRequestHeaderFieldsTooLarge) ErrHTTP() {
 	// Nothing here.
 }

requestheaderfieldstoolarge_test.go

@@ -1,14 +0,0 @@
-package errhttp
-
-import (
-	"testing"
-)
-
-func TestRequestHeaderFieldsTooLarge(t *testing.T) {
-
-	var x RequestHeaderFieldsTooLarge = internalRequestHeaderFieldsTooLarge{} // THIS IS THE LINE THAT ACTUALLY MATTERS IN THIS TEST.
-
-	if nil == x {
-		t.Errorf("This should not happen.")
-	}
-}

requesttimeout.go

@@ -4,11 +4,13 @@ import (
 	"errors"
 )
 
+var _ Error          = internalRequestTimeout{}
+var _ RequestTimeout = internalRequestTimeout{}
+
 var ErrRequestTimeout error = RequestTimeoutWrap(errors.New("Request Timeout"))
 
 type RequestTimeout interface {
-	error
+	ClientError
-	Err() error
 	RequestTimeout()
 }
 
@@ -26,10 +28,6 @@ func (receiver internalRequestTimeout) Error() string {
 	return receiver.err.Error()
 }
 
-func (receiver internalRequestTimeout) Err() error {
-	return receiver.err
-}
-
 func (internalRequestTimeout) ErrHTTP() {
 	// Nothing here.
 }

requesttimeout_test.go

@@ -1,14 +0,0 @@
-package errhttp
-
-import (
-	"testing"
-)
-
-func TestRequestTimeout(t *testing.T) {
-
-	var x RequestTimeout = internalRequestTimeout{} // THIS IS THE LINE THAT ACTUALLY MATTERS IN THIS TEST.
-
-	if nil == x {
-		t.Errorf("This should not happen.")
-	}
-}

requesturitoolong.go

@@ -4,11 +4,13 @@ import (
 	"errors"
 )
 
+var _ Error             = internalRequestURITooLong{}
+var _ RequestURITooLong = internalRequestURITooLong{}
+
 var ErrRequestURITooLong error = RequestURITooLongWrap(errors.New("Request URI Too Long"))
 
 type RequestURITooLong interface {
-	error
+	ClientError
-	Err() error
 	RequestURITooLong()
 }
 
@@ -26,10 +28,6 @@ func (receiver internalRequestURITooLong) Error() string {
 	return receiver.err.Error()
 }
 
-func (receiver internalRequestURITooLong) Err() error {
-	return receiver.err
-}
-
 func (internalRequestURITooLong) ErrHTTP() {
 	// Nothing here.
 }

requesturitoolong_test.go

@@ -1,14 +0,0 @@
-package errhttp
-
-import (
-	"testing"
-)
-
-func TestRequestURITooLong(t *testing.T) {
-
-	var x RequestURITooLong = internalRequestURITooLong{} // THIS IS THE LINE THAT ACTUALLY MATTERS IN THIS TEST.
-
-	if nil == x {
-		t.Errorf("This should not happen.")
-	}
-}

serviceunavailable.go

@@ -4,6 +4,9 @@ import (
 	"errors"
 )
 
+var _ Error              = internalServiceUnavailable{}
+var _ ServiceUnavailable = internalServiceUnavailable{}
+
 var ErrServiceUnavailable error = ServiceUnavailableWrap(errors.New("Service Unavailable"))
 
 type ServiceUnavailable interface {
@@ -25,10 +28,6 @@ func (receiver internalServiceUnavailable) Error() string {
 	return receiver.err.Error()
 }
 
-func (receiver internalServiceUnavailable) Err() error {
-	return receiver.err
-}
-
 func (internalServiceUnavailable) ErrHTTP() {
 	// Nothing here.
 }

teapot.go

@@ -4,6 +4,9 @@ import (
 	"errors"
 )
 
+var _ Error  = internalTeapot{}
+var _ Teapot = internalTeapot{}
+
 var ErrTeapot error = TeapotWrap(errors.New("I'm a teapot"))
 
 type Teapot interface {
@@ -25,10 +28,6 @@ func (receiver internalTeapot) Error() string {
 	return receiver.err.Error()
 }
 
-func (receiver internalTeapot) Err() error {
-	return receiver.err
-}
-
 func (internalTeapot) ErrHTTP() {
 	// Nothing here.
 }

teapot_test.go

@@ -1,14 +0,0 @@
-package errhttp
-
-import (
-	"testing"
-)
-
-func TestTeapot(t *testing.T) {
-
-	var x Teapot = internalTeapot{} // THIS IS THE LINE THAT ACTUALLY MATTERS IN THIS TEST.
-
-	if nil == x {
-		t.Errorf("This should not happen.")
-	}
-}

toomanyrequests.go

@@ -4,6 +4,9 @@ import (
 	"errors"
 )
 
+var _ Error           = internalTooManyRequests{}
+var _ TooManyRequests = internalTooManyRequests{}
+
 var ErrTooManyRequests error = TooManyRequestsWrap(errors.New("Too Many Requests"))
 
 type TooManyRequests interface {
@@ -25,10 +28,6 @@ func (receiver internalTooManyRequests) Error() string {
 	return receiver.err.Error()
 }
 
-func (receiver internalTooManyRequests) Err() error {
-	return receiver.err
-}
-
 func (internalTooManyRequests) ErrHTTP() {
 	// Nothing here.
 }

toomanyrequests_test.go

@@ -1,14 +0,0 @@
-package errhttp
-
-import (
-	"testing"
-)
-
-func TestTooManyRequests(t *testing.T) {
-
-	var x TooManyRequests = internalTooManyRequests{} // THIS IS THE LINE THAT ACTUALLY MATTERS IN THIS TEST.
-
-	if nil == x {
-		t.Errorf("This should not happen.")
-	}
-}

unauthorized.go

@@ -4,6 +4,9 @@ import (
 	"errors"
 )
 
+var _ Error        = internalUnauthorized{}
+var _ Unauthorized = internalUnauthorized{}
+
 var ErrUnauthorized error = UnauthorizedWrap(errors.New("Unauthorized"))
 
 type Unauthorized interface {
@@ -25,10 +28,6 @@ func (receiver internalUnauthorized) Error() string {
 	return receiver.err.Error()
 }
 
-func (receiver internalUnauthorized) Err() error {
-	return receiver.err
-}
-
 func (internalUnauthorized) ErrHTTP() {
 	// Nothing here.
 }

unauthorized_test.go

@@ -1,14 +0,0 @@
-package errhttp
-
-import (
-	"testing"
-)
-
-func TestUnauthorized(t *testing.T) {
-
-	var x Unauthorized = internalUnauthorized{} // THIS IS THE LINE THAT ACTUALLY MATTERS IN THIS TEST.
-
-	if nil == x {
-		t.Errorf("This should not happen.")
-	}
-}

unavailableforlegalreasons.go

@@ -4,6 +4,9 @@ import (
 	"errors"
 )
 
+var _ Error                      = internalUnavailableForLegalReasons{}
+var _ UnavailableForLegalReasons = internalUnavailableForLegalReasons{}
+
 var ErrUnavailableForLegalReasons error = UnavailableForLegalReasonsWrap(errors.New("Unavailable For Legal Reasons"))
 
 type UnavailableForLegalReasons interface {
@@ -25,10 +28,6 @@ func (receiver internalUnavailableForLegalReasons) Error() string {
 	return receiver.err.Error()
 }
 
-func (receiver internalUnavailableForLegalReasons) Err() error {
-	return receiver.err
-}
-
 func (internalUnavailableForLegalReasons) ErrHTTP() {
 	// Nothing here.
 }

unavailableforlegalreasons_test.go

@@ -1,14 +0,0 @@
-package errhttp
-
-import (
-	"testing"
-)
-
-func TestUnavailableForLegalReasons(t *testing.T) {
-
-	var x UnavailableForLegalReasons = internalUnavailableForLegalReasons{} // THIS IS THE LINE THAT ACTUALLY MATTERS IN THIS TEST.
-
-	if nil == x {
-		t.Errorf("This should not happen.")
-	}
-}

unprocessableentity.go

@@ -4,6 +4,9 @@ import (
 	"errors"
 )
 
+var _ Error               = internalUnprocessableEntity{}
+var _ UnprocessableEntity = internalUnprocessableEntity{}
+
 var ErrUnprocessableEntity error = UnprocessableEntityWrap(errors.New("Unprocessable Entity"))
 
 type UnprocessableEntity interface {
@@ -25,10 +28,6 @@ func (receiver internalUnprocessableEntity) Error() string {
 	return receiver.err.Error()
 }
 
-func (receiver internalUnprocessableEntity) Err() error {
-	return receiver.err
-}
-
 func (internalUnprocessableEntity) ErrHTTP() {
 	// Nothing here.
 }

unprocessableentity_test.go

@@ -1,14 +0,0 @@
-package errhttp
-
-import (
-	"testing"
-)
-
-func TestUnprocessableEntity(t *testing.T) {
-
-	var x UnprocessableEntity = internalUnprocessableEntity{} // THIS IS THE LINE THAT ACTUALLY MATTERS IN THIS TEST.
-
-	if nil == x {
-		t.Errorf("This should not happen.")
-	}
-}

unsupportedmediatype.go

@@ -4,6 +4,9 @@ import (
 	"errors"
 )
 
+var _ Error                = internalUnsupportedMediaType{}
+var _ UnsupportedMediaType = internalUnsupportedMediaType{}
+
 var ErrUnsupportedMediaType error = UnsupportedMediaTypeWrap(errors.New("Unsupported Media Type"))
 
 type UnsupportedMediaType interface {
@@ -25,10 +28,6 @@ func (receiver internalUnsupportedMediaType) Error() string {
 	return receiver.err.Error()
 }
 
-func (receiver internalUnsupportedMediaType) Err() error {
-	return receiver.err
-}
-
 func (internalUnsupportedMediaType) ErrHTTP() {
 	// Nothing here.
 }

unsupportedmediatype_test.go

@@ -1,14 +0,0 @@
-package errhttp
-
-import (
-	"testing"
-)
-
-func TestUnsupportedMediaType(t *testing.T) {
-
-	var x UnsupportedMediaType = internalUnsupportedMediaType{} // THIS IS THE LINE THAT ACTUALLY MATTERS IN THIS TEST.
-
-	if nil == x {
-		t.Errorf("This should not happen.")
-	}
-}

upgraderequired.go

@@ -4,6 +4,9 @@ import (
 	"errors"
 )
 
+var _ Error           = internalUpgradeRequired{}
+var _ UpgradeRequired = internalUpgradeRequired{}
+
 var ErrUpgradeRequired error = UpgradeRequiredWrap(errors.New("Upgrade Required"))
 
 type UpgradeRequired interface {
@@ -25,10 +28,6 @@ func (receiver internalUpgradeRequired) Error() string {
 	return receiver.err.Error()
 }
 
-func (receiver internalUpgradeRequired) Err() error {
-	return receiver.err
-}
-
 func (internalUpgradeRequired) ErrHTTP() {
 	// Nothing here.
 }

upgraderequired_test.go

@@ -1,14 +0,0 @@
-package errhttp
-
-import (
-	"testing"
-)
-
-func TestUpgradeRequired(t *testing.T) {
-
-	var x UpgradeRequired = internalUpgradeRequired{} // THIS IS THE LINE THAT ACTUALLY MATTERS IN THIS TEST.
-
-	if nil == x {
-		t.Errorf("This should not happen.")
-	}
-}

uritoolong.go

@@ -4,6 +4,9 @@ import (
 	"errors"
 )
 
+var _ Error      = internalURITooLong{}
+var _ URITooLong = internalURITooLong{}
+
 var ErrURITooLong error = URITooLongWrap(errors.New("URI Too Long"))
 
 type URITooLong interface {
@@ -25,10 +28,6 @@ func (receiver internalURITooLong) Error() string {
 	return receiver.err.Error()
 }
 
-func (receiver internalURITooLong) Err() error {
-	return receiver.err
-}
-
 func (internalURITooLong) ErrHTTP() {
 	// Nothing here.
 }

uritoolong_test.go

@@ -1,14 +0,0 @@
-package errhttp
-
-import (
-	"testing"
-)
-
-func TestURITooLong(t *testing.T) {
-
-	var x URITooLong = internalURITooLong{} // THIS IS THE LINE THAT ACTUALLY MATTERS IN THIS TEST.
-
-	if nil == x {
-		t.Errorf("This should not happen.")
-	}
-}

variantaisonegotiates.go

@@ -4,6 +4,9 @@ import (
 	"errors"
 )
 
+var _ Error                 = internalVariantAlsoNegotiates{}
+var _ VariantAlsoNegotiates = internalVariantAlsoNegotiates{}
+
 var ErrVariantAlsoNegotiates error = VariantAlsoNegotiatesWrap(errors.New("Variant Also Negotiates"))
 
 type VariantAlsoNegotiates interface {
@@ -27,10 +30,6 @@ func (receiver internalVariantAlsoNegotiates) Error() string {
 	return receiver.err.Error()
 }
 
-func (receiver internalVariantAlsoNegotiates) Err() error {
-	return receiver.err
-}
-
 func (internalVariantAlsoNegotiates) ErrHTTP() {
 	// Nothing here.
 }