Fix: update validation functions to return false for invalid field types instead of panicking

Author: KaranLathiya

baked_in.go

@@ -538,7 +538,7 @@ func isPrintableASCII(fl FieldLevel) bool {
 	if field.Kind() == reflect.String {
 		return printableASCIIRegex().MatchString(field.String())
 	}
-	panic(fmt.Sprintf("Bad field type %s", field.Type()))
+	return false
 }
 
 // isASCII is the validation function for validating if the field's value is a valid ASCII character.
@@ -547,7 +547,7 @@ func isASCII(fl FieldLevel) bool {
 	if field.Kind() == reflect.String {
 		return aSCIIRegex().MatchString(field.String())
 	}
-	panic(fmt.Sprintf("Bad field type %s", field.Type()))
+	return false
 }
 
 // isUUID5 is the validation function for validating if the field's value is a valid v5 UUID.

validator_test.go

@@ -3904,7 +3904,7 @@ func TestMultibyteValidation(t *testing.T) {
 
 func TestPrintableASCIIValidation(t *testing.T) {
 	tests := []struct {
-		param    string
+		param    interface{}
 		expected bool
 	}{
 		{"", true},
@@ -3918,6 +3918,8 @@ func TestPrintableASCIIValidation(t *testing.T) {
 		{"1234abcDEF", true},
 		{"newline\n", false},
 		{"\x19test\x7F", false},
+		{[]int{3000}, false},
+		{1, false},
 	}
 
 	validate := New()
@@ -3940,13 +3942,11 @@ func TestPrintableASCIIValidation(t *testing.T) {
 			}
 		}
 	}
-	PanicMatches(t, func() { _ = validate.Var([]int{3000}, "printascii") }, "Bad field type []int")
-	PanicMatches(t, func() { _ = validate.Var(1, "printascii") }, "Bad field type int")
 }
 
 func TestASCIIValidation(t *testing.T) {
 	tests := []struct {
-		param    string
+		param    interface{}
 		expected bool
 	}{
 		{"", true},
@@ -3959,6 +3959,8 @@ func TestASCIIValidation(t *testing.T) {
 		{"[email protected]", true},
 		{"1234abcDEF", true},
 		{"", true},
+		{[]int{3000}, false},
+		{1, false},
 	}
 
 	validate := New()
@@ -3981,8 +3983,6 @@ func TestASCIIValidation(t *testing.T) {
 			}
 		}
 	}
-	PanicMatches(t, func() { _ = validate.Var([]int{3000}, "ascii") }, "Bad field type []int")
-	PanicMatches(t, func() { _ = validate.Var(1, "ascii") }, "Bad field type int")
 }
 
 func TestUUID5Validation(t *testing.T) {