/
string_test.go
54 lines (43 loc) · 1.1 KB
/
string_test.go
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package nil_test
import (
"bytes"
"encoding/json"
"fmt"
"testing"
"github.com/stretchr/testify/assert"
"github.com/stretchr/testify/require"
"github.com/vvelikodny/nil"
)
func TestNilString(t *testing.T) {
str1 := nil.NewNilString()
require.True(t, str1.Nil())
require.Equal(t, "nil", fmt.Sprint(str1))
str2 := nil.NewString("value")
require.False(t, str2.Nil())
require.Equal(t, "value", fmt.Sprint(str2))
}
type Json1 struct {
Field nil.String `json:"field,omitempty"`
}
func TestUnmarshalJsonWithNullString(t *testing.T) {
var j Json1
require.NoError(t, json.NewDecoder(bytes.NewBufferString(`{}`)).Decode(&j))
assert.Equal(t, Json1{
Field: nil.NewNilString(),
}, j)
require.NoError(t, json.NewDecoder(bytes.NewBufferString(`{"field":null}`)).Decode(&j))
assert.Equal(t, Json1{
Field: nil.NewNilString(),
}, j)
b := true
value := nil.FromBoolPtr(&b)
fmt.Println("nil?", value.Nil())
}
func TestJsonWithNullString(t *testing.T) {
var b bytes.Buffer
require.NoError(t, json.NewEncoder(&b).Encode(Json1{
Field: nil.NewNilString(),
}))
assert.Equal(t, `{"field":null}
`, b.String())
}