chore: import upstream snapshot with attribution

codec/json/codec_test.go

@@ -0,0 +1,98 @@
+package json
+
+import (
+	"bytes"
+	"encoding/json"
+	"testing"
+
+	"go-micro.dev/v6/codec"
+	"google.golang.org/protobuf/types/known/anypb"
+	"google.golang.org/protobuf/types/known/wrapperspb"
+)
+
+// mockReadWriteCloser implements io.ReadWriteCloser for testing
+type mockReadWriteCloser struct {
+	*bytes.Buffer
+}
+
+func (m *mockReadWriteCloser) Close() error {
+	return nil
+}
+
+// TestCodecAnyTypeWrite tests that google.protobuf.Any types are properly written with @type field
+func TestCodecAnyTypeWrite(t *testing.T) {
+	buf := &mockReadWriteCloser{Buffer: bytes.NewBuffer(nil)}
+	c := NewCodec(buf).(*Codec)
+
+	// Create a StringValue message
+	stringValue := wrapperspb.String("test value")
+
+	// Wrap it in an Any message
+	anyMsg, err := anypb.New(stringValue)
+	if err != nil {
+		t.Fatalf("Failed to create Any message: %v", err)
+	}
+
+	// Write the message
+	msg := &codec.Message{
+		Type: codec.Response,
+	}
+	if err := c.Write(msg, anyMsg); err != nil {
+		t.Fatalf("Failed to write Any message: %v", err)
+	}
+
+	// Parse the written JSON
+	var result map[string]interface{}
+	if err := json.Unmarshal(buf.Bytes(), &result); err != nil {
+		t.Fatalf("Failed to unmarshal JSON: %v", err)
+	}
+
+	// Check that @type field exists
+	typeURL, ok := result["@type"].(string)
+	if !ok {
+		t.Fatalf("@type field not found in JSON output. Got: %v", buf.String())
+	}
+
+	// Verify the type URL is correct
+	expectedTypeURL := "type.googleapis.com/google.protobuf.StringValue"
+	if typeURL != expectedTypeURL {
+		t.Errorf("Expected @type to be %s, got %s", expectedTypeURL, typeURL)
+	}
+
+	t.Logf("Successfully wrote Any type with @type field: %s", buf.String())
+}
+
+// TestCodecAnyTypeRead tests that JSON with @type field can be read into google.protobuf.Any
+func TestCodecAnyTypeRead(t *testing.T) {
+	// JSON representation of an Any message with @type field
+	jsonData := `{"@type":"type.googleapis.com/google.protobuf.StringValue","value":"test value"}`
+
+	buf := &mockReadWriteCloser{Buffer: bytes.NewBufferString(jsonData + "\n")}
+	c := NewCodec(buf).(*Codec)
+
+	// Read into an Any message
+	anyMsg := &anypb.Any{}
+	if err := c.ReadBody(anyMsg); err != nil {
+		t.Fatalf("Failed to read Any message: %v", err)
+	}
+
+	// Verify the type URL is set
+	expectedTypeURL := "type.googleapis.com/google.protobuf.StringValue"
+	if anyMsg.TypeUrl != expectedTypeURL {
+		t.Errorf("Expected TypeUrl to be %s, got %s", expectedTypeURL, anyMsg.TypeUrl)
+	}
+
+	// Unmarshal the contained message
+	stringValue := &wrapperspb.StringValue{}
+	if err := anyMsg.UnmarshalTo(stringValue); err != nil {
+		t.Fatalf("Failed to unmarshal contained message: %v", err)
+	}
+
+	// Verify the value
+	expectedValue := "test value"
+	if stringValue.Value != expectedValue {
+		t.Errorf("Expected value to be %s, got %s", expectedValue, stringValue.Value)
+	}
+
+	t.Logf("Successfully read Any type from JSON with @type field")
+}