jsonint.Int is not longer an optional-type

README.md

@@ -9,3 +9,20 @@ This helps to work-around that numbers in JSON are effectively "broken".
 Online documentation, which includes examples, can be found at: http://godoc.org/sourcecode.social/reiver/go-jsonint
 
 [![GoDoc](https://godoc.org/sourcecode.social/reiver/go-jsonint?status.svg)](https://godoc.org/sourcecode.social/reiver/go-jsonint)
+
+## Example
+
+Here is an example:
+```go
+type Account struct {
+	FollowersCount jsonint.Int `json:"followers_count"`
+	FollowingCount jsonint.Int `json:"following_count"`
+	StatusexCount  jsonint.Int `json:"statuses_count"`
+}
+
+// ...
+
+var account Account
+
+err := json.Unmarshal(data, &account)
+```

errors.go

@@ -6,5 +6,4 @@ import (
 
 const (
 	errNilReceiver = erorr.Error("jsonint: nil receiver")
-	errCannotMarshalNothingIntoJSON = erorr.Error("jsonint: cannot marshal jsonint.Nothing() into JSON")
 )

int.go

@@ -5,43 +5,45 @@ import (
 	"strconv"
 
 	"sourcecode.social/reiver/go-erorr"
-	"sourcecode.social/reiver/go-opt"
 )
 
 var _ json.Marshaler = Int{}
 var _ json.Unmarshaler = new(Int)
 
 type Int struct {
-	value opt.Optional[string]
-}
-
-func Nothing() Int {
-	return Int{}
+	value string
 }
 
 func Int64(value int64) Int {
+	if 0 == value {
+		return Int{}
+	}
+
 	return Int{
-		value: opt.Something(strconv.FormatInt(value, 10)),
+		value: strconv.FormatInt(value, 10),
 	}
 }
 
 func Uint64(value uint64) Int {
-	return Int{
-		value: opt.Something(strconv.FormatUint(value, 10)),
+	if 0 == value {
+		return Int{}
 	}
-}
 
-func (receiver Int) Get() (string, bool) {
-	return receiver.value.Get()
+	return Int{
+		value: strconv.FormatUint(value, 10),
+	}
 }
 
 func (receiver Int) MarshalJSON() ([]byte, error) {
-	value, found := receiver.value.Get()
-	if !found {
-		return nil, errCannotMarshalNothingIntoJSON
+	return []byte(receiver.String()), nil
+}
+
+func (receiver Int) String() string {
+	if "" == receiver.value {
+		return "0"
 	}
 
-	return []byte(value), nil
+	return receiver.value
 }
 
 func (receiver *Int) UnmarshalJSON(data []byte) error {
@@ -53,7 +55,14 @@ func (receiver *Int) UnmarshalJSON(data []byte) error {
 		return erorr.Errorf("jsonint: cannot unmarshal %q into value of type %T", data, Int{})
 	}
 
-	receiver.value = opt.Something(string(data))
+	s := string(data)
 
+	switch s {
+	case "0","-0","+0":
+		receiver.value = ""
+		return nil
+	}
+
+	receiver.value = string(data)
 	return nil
 }

int_marshaljson_test.go

@@ -12,6 +12,13 @@ func TestInt_MarshalJSON(t *testing.T) {
 		Int jsonint.Int
 		Expected string
 	}{
+		{
+			Int: jsonint.Int{},
+			Expected: "0",
+		},
+
+
+
 		{
 			Int: jsonint.Int64(-65537),
 			Expected: "-65537",
@@ -191,20 +198,3 @@ func TestInt_MarshalJSON(t *testing.T) {
 		}
 	}
 }
-
-func TestInt_MarshalJSON_fail(t *testing.T) {
-
-	var datum jsonint.Int
-
-	actualBytes, err := datum.MarshalJSON()
-	if nil == err {
-		t.Error("Expected an error but did not actually get one.")
-		return
-	}
-	if nil != actualBytes {
-		t.Error("Expected return bytes to be nil but actually wasn't.")
-		t.Logf("ACTUAL BYTES: %#v", actualBytes)
-		t.Logf("ACTUAL BYTES: %q", actualBytes)
-		return
-	}
-}

int_unmarshaljson_test.go

@@ -3,6 +3,8 @@ package jsonint_test
 import (
 	"testing"
 
+	"encoding/json"
+
 	"sourcecode.social/reiver/go-jsonint"
 )
 
@@ -251,3 +253,79 @@ func TestInt_UnmarshalJSON(t *testing.T) {
 		}
 	}
 }
+
+func TestInt_UnmarshalJSON_fail(t *testing.T) {
+
+	tests := []struct{
+		JSON []byte
+	}{
+		{
+			JSON: nil,
+		},
+
+
+
+		{
+			JSON: []byte{},
+		},
+
+
+
+		{
+			JSON: []byte(""),
+		},
+
+
+
+		{
+			JSON: []byte(" "),
+		},
+		{
+			JSON: []byte("  "),
+		},
+		{
+			JSON: []byte("   "),
+		},
+
+
+
+		{
+			JSON: []byte("apple"),
+		},
+		{
+			JSON: []byte("banana"),
+		},
+		{
+			JSON: []byte("cherry"),
+		},
+
+
+
+		{
+			JSON: []byte("ONE"),
+		},
+		{
+			JSON: []byte("TWO"),
+		},
+		{
+			JSON: []byte("THREE"),
+		},
+		{
+			JSON: []byte("FOUR"),
+		},
+		{
+			JSON: []byte("FIVE"),
+		},
+	}
+
+	for testNumber, test := range tests {
+
+		var actual jsonint.Int
+
+		err := json.Unmarshal(test.JSON, &actual)
+		if nil == err {
+			t.Errorf("For test #%d, expected an error but did not actually get one.", testNumber)
+			continue
+		}
+	}
+}

zero_test.go

@@ -0,0 +1,37 @@
+package jsonint_test
+
+import (
+	"testing"
+
+	"encoding/json"
+
+	"sourcecode.social/reiver/go-jsonint"
+)
+
+func TestZero(t *testing.T) {
+
+	var nothing jsonint.Int
+
+	var  int64zero jsonint.Int = jsonint.Int64(0)
+	var uint64zero jsonint.Int = jsonint.Uint64(0)
+
+	var jsonzero jsonint.Int
+	{
+		var data []byte = []byte("0")
+
+		err := json.Unmarshal(data, &jsonzero)
+		if nil != err {
+			panic(err)
+		}
+	}
+
+	if nothing != int64zero {
+		t.Error("nothing ≠ int64zero")
+	}
+	if nothing != uint64zero {
+		t.Error("nothing ≠ uint64zero")
+	}
+	if nothing != jsonzero {
+		t.Error("nothing ≠ json64zero")
+	}
+}