whatcanGOwrong

go/pkg/mod/github.com/google/uuid@v1.6.0/json_test.go

@@ -0,0 +1,113 @@
+// Copyright 2016 Google Inc.  All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package uuid
+
+import (
+	"encoding/json"
+	"reflect"
+	"testing"
+)
+
+var testUUID = Must(Parse("f47ac10b-58cc-0372-8567-0e02b2c3d479"))
+
+func TestJSON(t *testing.T) {
+	type S struct {
+		ID1 UUID
+		ID2 UUID
+	}
+	s1 := S{ID1: testUUID}
+	data, err := json.Marshal(&s1)
+	if err != nil {
+		t.Fatal(err)
+	}
+	var s2 S
+	if err := json.Unmarshal(data, &s2); err != nil {
+		t.Fatal(err)
+	}
+	if !reflect.DeepEqual(&s1, &s2) {
+		t.Errorf("got %#v, want %#v", s2, s1)
+	}
+}
+
+func TestJSONUnmarshal(t *testing.T) {
+	type S struct {
+		ID1 UUID
+		ID2 UUID `json:"ID2,omitempty"`
+	}
+
+	testCases := map[string]struct {
+		data           []byte
+		expectedError  error
+		expectedResult UUID
+	}{
+		"success": {
+			data:           []byte(`{"ID1": "f47ac10b-58cc-0372-8567-0e02b2c3d479"}`),
+			expectedError:  nil,
+			expectedResult: testUUID,
+		},
+		"zero": {
+			data:           []byte(`{"ID1": "00000000-0000-0000-0000-000000000000"}`),
+			expectedError:  nil,
+			expectedResult: Nil,
+		},
+		"null": {
+			data:           []byte(`{"ID1": null}`),
+			expectedError:  nil,
+			expectedResult: Nil,
+		},
+		"empty": {
+			data:           []byte(`{"ID1": ""}`),
+			expectedError:  invalidLengthError{len: 0},
+			expectedResult: Nil,
+		},
+		"omitempty": {
+			data:           []byte(`{"ID2": ""}`),
+			expectedError:  invalidLengthError{len: 0},
+			expectedResult: Nil,
+		},
+	}
+
+	for name, tc := range testCases {
+		t.Run(name, func(t *testing.T) {
+			var s S
+			if err := json.Unmarshal(tc.data, &s); err != tc.expectedError {
+				t.Errorf("unexpected error: got %v, want %v", err, tc.expectedError)
+			}
+			if !reflect.DeepEqual(s.ID1, tc.expectedResult) {
+				t.Errorf("got %#v, want %#v", s.ID1, tc.expectedResult)
+			}
+		})
+	}
+}
+
+func BenchmarkUUID_MarshalJSON(b *testing.B) {
+	x := &struct {
+		UUID UUID `json:"uuid"`
+	}{}
+	var err error
+	x.UUID, err = Parse("f47ac10b-58cc-0372-8567-0e02b2c3d479")
+	if err != nil {
+		b.Fatal(err)
+	}
+	for i := 0; i < b.N; i++ {
+		js, err := json.Marshal(x)
+		if err != nil {
+			b.Fatalf("marshal json: %#v (%v)", js, err)
+		}
+	}
+}
+
+func BenchmarkUUID_UnmarshalJSON(b *testing.B) {
+	js := []byte(`{"uuid":"f47ac10b-58cc-0372-8567-0e02b2c3d479"}`)
+	var x *struct {
+		UUID UUID `json:"uuid"`
+	}
+	for i := 0; i < b.N; i++ {
+		err := json.Unmarshal(js, &x)
+		if err != nil {
+			b.Fatalf("marshal json: %#v (%v)", js, err)
+		}
+	}
+}