Increased UT coverage for api/json

api/json/json_encode_test.go

@@ -609,3 +609,34 @@ func TestTypeFields(t *testing.T) {
 		}
 	}
 }
+
+func TestMarshalIndent(t *testing.T) {
+	type TestStruct struct {
+		Field1 string
+		Field2 int
+		Field3 []byte
+	}
+
+	testCases := []struct {
+		input    TestStruct
+		expected string
+		opts     encOpts
+	}{
+		{input: TestStruct{Field1: "test", Field2: 123, Field3: []byte("bytes")}, expected: `{
+  "Field1": "test",
+  "Field2": 123,
+  "Field3": "Ynl0ZXM="
+}`, opts: encOpts{quoted: false, escapeHTML: false}},
+	}
+
+	for _, tc := range testCases {
+		result, err := MarshalIndent(tc.input, "", "  ")
+		if err != nil {
+			t.Errorf("MarshalIndent(%v) = %v, expected nil", tc.input, err)
+		}
+
+		if string(result) != tc.expected {
+			t.Errorf("MarshalIndent(%v) = %v, expected %v", tc.input, string(result), tc.expected)
+		}
+	}
+}