fix: json unmarshal int

builtin/assertion.go

@@ -49,8 +49,37 @@ func EndsWith(t assert.TestingT, expected, actual interface{}, msgAndArgs ...int
 }
 
 func EqualLength(t assert.TestingT, expected, actual interface{}, msgAndArgs ...interface{}) bool {
-	if !assert.IsType(t, 129, expected, fmt.Sprintf("expected type is not int, got %#v", expected)) {
-		return false
+	length, err := convertInt(expected)
+	if err != nil {
+		return assert.Fail(t, fmt.Sprintf("expected type is not int, got %#v", expected), msgAndArgs...)
+	}
+
+	return assert.Len(t, actual, length, msgAndArgs...)
+}
+
+func convertInt(value interface{}) (int, error) {
+	switch v := value.(type) {
+	case int:
+		return v, nil
+	case int8:
+		return int(v), nil
+	case int16:
+		return int(v), nil
+	case int32:
+		return int(v), nil
+	case int64:
+		return int(v), nil
+	case uint:
+		return int(v), nil
+	case uint8:
+		return int(v), nil
+	case uint16:
+		return int(v), nil
+	case uint32:
+		return int(v), nil
+	case uint64:
+		return int(v), nil
+	default:
+		return 0, fmt.Errorf("unsupported int convertion for %v(%T)", v, v)
 	}
-	return assert.Len(t, actual, expected.(int), msgAndArgs...)
 }