fix(audio): fix audioTextResponse decode (#638)

* fix(audio): fix audioTextResponse decode

* test(audio): add audioTextResponse decode test

* test(audio): simplify code

client.go

@@ -193,11 +193,15 @@ func decodeResponse(body io.Reader, v any) error {
 		return nil
 	}
 
-	if result, ok := v.(*string); ok {
-		return decodeString(body, result)
-	}
+	switch o := v.(type) {
+	case *string:
+		return decodeString(body, o)
+	case *audioTextResponse:
+		return decodeString(body, &o.Text)
+	default:
 		return json.NewDecoder(body).Decode(v)
 	}
+}
 
 func decodeString(body io.Reader, output *string) error {
 	b, err := io.ReadAll(body)

client_test.go

@@ -7,9 +7,11 @@ import (
 	"fmt"
 	"io"
 	"net/http"
+	"reflect"
 	"testing"
 
 	"github.com/sashabaranov/go-openai/internal/test"
+	"github.com/sashabaranov/go-openai/internal/test/checks"
 )
 
 var errTestRequestBuilderFailed = errors.New("test request builder failed")
@@ -43,6 +45,7 @@ func TestDecodeResponse(t *testing.T) {
 	testCases := []struct {
 		name     string
 		value    interface{}
+		expected interface{}
 		body     io.Reader
 		hasError bool
 	}{
@@ -50,16 +53,21 @@ func TestDecodeResponse(t *testing.T) {
 			name:     "nil input",
 			value:    nil,
 			body:     bytes.NewReader([]byte("")),
+			expected: nil,
 		},
 		{
 			name:     "string input",
 			value:    &stringInput,
 			body:     bytes.NewReader([]byte("test")),
+			expected: "test",
 		},
 		{
 			name:  "map input",
 			value: &map[string]interface{}{},
 			body:  bytes.NewReader([]byte(`{"test": "test"}`)),
+			expected: map[string]interface{}{
+				"test": "test",
+			},
 		},
 		{
 			name:     "reader return error",
@@ -67,14 +75,38 @@ func TestDecodeResponse(t *testing.T) {
 			body:     &errorReader{err: errors.New("dummy")},
 			hasError: true,
 		},
+		{
+			name:  "audio text input",
+			value: &audioTextResponse{},
+			body:  bytes.NewReader([]byte("test")),
+			expected: audioTextResponse{
+				Text: "test",
+			},
+		},
+	}
+
+	assertEqual := func(t *testing.T, expected, actual interface{}) {
+		t.Helper()
+		if expected == actual {
+			return
+		}
+		v := reflect.ValueOf(actual).Elem().Interface()
+		if !reflect.DeepEqual(v, expected) {
+			t.Fatalf("Unexpected value: %v, expected: %v", v, expected)
+		}
 	}
 
 	for _, tc := range testCases {
 		t.Run(tc.name, func(t *testing.T) {
 			err := decodeResponse(tc.body, tc.value)
-			if (err != nil) != tc.hasError {
-				t.Errorf("Unexpected error: %v", err)
+			if tc.hasError {
+				checks.HasError(t, err, "Unexpected nil error")
+				return
 			}
+			if err != nil {
+				t.Fatalf("Unexpected error: %v", err)
+			}
+			assertEqual(t, tc.expected, tc.value)
 		})
 	}
 }