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validator_test.go
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executable file
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// Copyright 2015 Alex Browne. All rights reserved.
// Use of this source code is governed by the MIT
// license, which can be found in the LICENSE file.
package forms
import (
"bytes"
"fmt"
"mime/multipart"
"net/http"
"net/url"
"regexp"
"strings"
"testing"
)
func TestCustomMessage(t *testing.T) {
data := newData()
val := data.Validator()
customMsg := "You forgot to include name!"
val.Require("name").Message(customMsg)
if !val.HasErrors() {
t.Error("Expected an error but got none.")
} else if val.Messages()[0] != customMsg {
t.Errorf("Expected custom error message \"%s\" but got \"%s\"", customMsg, val.Messages()[0])
}
}
func TestCustomField(t *testing.T) {
data := newData()
val := data.Validator()
customField := "person.name"
val.Require("name").Field(customField)
if !val.HasErrors() {
t.Error("Expected an error but got none.")
} else if val.Fields()[0] != customField {
t.Errorf("Expected custom field name \"%s\" but got \"%s\"", customField, val.Fields()[0])
}
}
func TestRequire(t *testing.T) {
data := newData()
data.Add("name", "Bob")
data.Add("age", "25")
data.Add("color", "")
val := data.Validator()
val.Require("name")
val.Require("age")
if val.HasErrors() {
t.Errorf("Expected no errors but got errors: %v", val.Messages())
}
val.Require("color")
val.Require("a")
if len(val.Messages()) != 2 {
t.Errorf("Expected 2 validation errors but got %d.", len(val.Messages()))
}
}
func TestRequireFile(t *testing.T) {
data := newData()
val := data.Validator()
val.RequireFile("file")
if !val.HasErrors() {
t.Error("Expected val to have errors because file was not included but got none.")
}
fileHeader, err := createTestFileHeader("test_file.txt", []byte{})
if err != nil {
t.Error(err)
}
data.AddFile("file", fileHeader)
val = data.Validator()
val.RequireFile("file")
if len(val.ErrorMap()) != 1 {
t.Errorf("Expected val to have exactly one error because file was empty but got %d.", len(val.ErrorMap()))
} else {
msg := val.ErrorMap()["file"][0]
if !strings.Contains(msg, "empty") {
t.Errorf("Expected message to say file was empty but got: %s.", msg)
}
}
// Create the multipart file header
// Write actual content to it this time
fileHeaderWithContent, err := createTestFileHeader("test_file.txt", []byte("Hello!\n"))
if err != nil {
t.Error(err)
}
data.AddFile("file", fileHeaderWithContent)
val = data.Validator()
val.RequireFile("file")
if val.HasErrors() {
t.Errorf("Expected val to have no errors but got: %v\n", val.ErrorMap())
}
}
func createTestFileHeader(filename string, content []byte) (*multipart.FileHeader, error) {
body := bytes.NewBuffer([]byte{})
partWriter := multipart.NewWriter(body)
fileWriter, err := partWriter.CreateFormFile("file", filename)
if err != nil {
return nil, err
}
if _, err := fileWriter.Write(content); err != nil {
return nil, err
}
if err := partWriter.Close(); err != nil {
return nil, err
}
req, err := http.NewRequest("POST", "/", body)
if err != nil {
return nil, err
}
req.Header.Add("Content-Type", "multipart/form-data; boundary="+partWriter.Boundary())
_, fileHeader, err := req.FormFile("file")
if err != nil {
return nil, err
}
return fileHeader, nil
}
func TestMinLength(t *testing.T) {
data := newData()
data.Add("one", "A")
data.Add("three", "ABC")
data.Add("five", "ABC")
val := data.Validator()
val.MinLength("one", 1)
val.MinLength("three", 3)
if val.HasErrors() {
t.Error("Expected no errors but got errors: %v", val.Messages())
}
val.MinLength("five", 5)
if len(val.Messages()) != 1 {
t.Error("Expected a validation error.")
}
}
func TestMaxLength(t *testing.T) {
data := newData()
data.Add("one", "A")
data.Add("three", "ABC")
data.Add("five", "ABCDEF")
val := data.Validator()
val.MaxLength("one", 1)
val.MaxLength("three", 3)
if val.HasErrors() {
t.Errorf("Expected no errors but got errors: %v", val.Messages())
}
val.MaxLength("five", 5)
if len(val.Messages()) != 1 {
t.Error("Expected a validation error.")
}
}
func TestLengthRange(t *testing.T) {
data := newData()
data.Add("one-two", "a")
data.Add("two-three", "abc")
data.Add("three-four", "ab")
data.Add("four-five", "abcdef")
val := data.Validator()
val.LengthRange("one-two", 1, 2)
val.LengthRange("two-three", 2, 3)
if val.HasErrors() {
t.Errorf("Expected no errors but got errors: %v", val.Messages())
}
val.LengthRange("three-four", 3, 4)
val.LengthRange("four-five", 4, 5)
if len(val.Messages()) != 2 {
t.Errorf("Expected 2 validation errors but got %d.", len(val.Messages()))
}
}
func TestEqual(t *testing.T) {
data := newData()
data.Add("password", "password123")
data.Add("confirmPassword", "password123")
data.Add("nonMatching", "password1234")
val := data.Validator()
val.Equal("password", "confirmPassword")
if val.HasErrors() {
t.Errorf("Expected no errors but got errors: %v", val.Messages())
}
val.Equal("password", "nonMatching")
if len(val.Messages()) != 1 {
t.Error("Expected a validation error.")
}
}
func TestMatch(t *testing.T) {
data := newData()
data.Add("numeric", "123")
data.Add("alpha", "abc")
data.Add("not-numeric", "123a")
data.Add("not-alpha", "abc1")
val := data.Validator()
numericRegex := regexp.MustCompile("^[0-9]+$")
alphaRegex := regexp.MustCompile("^[a-zA-Z]+$")
val.Match("numeric", numericRegex)
val.Match("alpha", alphaRegex)
if val.HasErrors() {
t.Errorf("Expected no errors but got errors: %v", val.Messages())
}
val.Match("not-numeric", numericRegex)
val.Match("not-alpha", alphaRegex)
if len(val.Messages()) != 2 {
t.Errorf("Expected 2 validation errors but got %d.", len(val.Messages()))
}
}
func TestMatchEmail(t *testing.T) {
data := newData()
data.Add("email", "abc@example.com")
data.Add("not-email", "abc.com")
val := data.Validator()
val.MatchEmail("email")
if val.HasErrors() {
t.Errorf("Expected no errors but got errors: %v", val.Messages())
}
val.MatchEmail("not-email")
val.MatchEmail("nothing")
if len(val.Messages()) != 2 {
t.Errorf("Expected 2 validation errors but got %d.", len(val.Messages()))
}
}
func TestTypeInt(t *testing.T) {
data := newData()
data.Add("age", "23")
data.Add("weight", "not a number")
val := data.Validator()
val.TypeInt("age")
if val.HasErrors() {
t.Errorf("Expected no errors but got errors: %v", val.Messages())
}
val.TypeInt("weight")
if len(val.Messages()) != 1 {
t.Errorf("Expected 1 validation errors but got %d.", len(val.Messages()))
}
}
func TestTypeFloat(t *testing.T) {
data := newData()
data.Add("age", "23")
data.Add("weight", "155.8")
data.Add("favoriteNumber", "not a number")
val := data.Validator()
val.TypeFloat("age")
val.TypeFloat("weight")
if val.HasErrors() {
t.Errorf("Expected no errors but got errors: %v", val.Messages())
}
val.TypeFloat("favoriteNumber")
if len(val.Messages()) != 1 {
t.Errorf("Expected 1 validation errors but got %d.", len(val.Messages()))
}
}
func TestTypeBool(t *testing.T) {
data := newData()
data.Add("cool", "true")
data.Add("fun", "false")
data.Add("yes", "not a boolean")
val := data.Validator()
val.TypeBool("cool")
val.TypeBool("fun")
if val.HasErrors() {
t.Errorf("Expected no errors but got errors: %v", val.Messages())
}
val.TypeBool("yes")
if len(val.Messages()) != 1 {
t.Errorf("Expected 1 validation errors but got %d.", len(val.Messages()))
}
}
func TestGreater(t *testing.T) {
data := newData()
data.Add("one", "1")
data.Add("three", "3")
val := data.Validator()
val.Greater("one", -1)
val.Greater("three", 2)
if val.HasErrors() {
t.Errorf("Expected no errors but got errors: %v", val.Messages())
}
val.Greater("one", 1)
val.Greater("three", 4)
if len(val.Messages()) != 2 {
t.Errorf("Expected 2 validation errors but got %d.", len(val.Messages()))
}
}
func TestGreaterOrEqual(t *testing.T) {
data := newData()
data.Add("one", "1")
data.Add("three", "3")
val := data.Validator()
val.GreaterOrEqual("one", 1)
val.GreaterOrEqual("three", 2)
if val.HasErrors() {
t.Errorf("Expected no errors but got errors: %v", val.Messages())
}
val.GreaterOrEqual("one", 2)
val.GreaterOrEqual("three", 4)
if len(val.Messages()) != 2 {
t.Errorf("Expected 2 validation errors but got %d.", len(val.Messages()))
}
}
func TestLess(t *testing.T) {
data := newData()
data.Add("one", "1")
data.Add("three", "3")
val := data.Validator()
val.Less("one", 2)
val.Less("three", 4)
if val.HasErrors() {
t.Errorf("Expected no errors but got errors: %v", val.Messages())
}
val.Less("one", -1)
val.Less("three", 3)
if len(val.Messages()) != 2 {
t.Errorf("Expected 2 validation errors but got %d.", len(val.Messages()))
}
}
func TestLessOrEqual(t *testing.T) {
data := newData()
data.Add("one", "1")
data.Add("three", "3")
val := data.Validator()
val.LessOrEqual("one", 1)
val.LessOrEqual("three", 4)
if val.HasErrors() {
t.Errorf("Expected no errors but got errors: %v", val.Messages())
}
val.LessOrEqual("one", -1)
val.LessOrEqual("three", 2)
if len(val.Messages()) != 2 {
t.Errorf("Expected 2 validation errors but got %d.", len(val.Messages()))
}
}
func TestAcceptFileExts(t *testing.T) {
data := newData()
fileHeader, err := createTestFileHeader("test_file.txt", []byte{})
if err != nil {
t.Error(err)
}
data.AddFile("file", fileHeader)
val := data.Validator()
val.AcceptFileExts("file", "txt")
if val.HasErrors() {
t.Errorf("Expected no errors for the single allowed ext case but got %v\n", val.ErrorMap())
}
val = data.Validator()
val.AcceptFileExts("file", "txt", "jpg")
if val.HasErrors() {
t.Errorf("Expected no errors for the multiple allowed ext case but got %v\n", val.ErrorMap())
}
val = data.Validator()
val.AcceptFileExts("foo", "txt")
if val.HasErrors() {
t.Errorf("Expected no errors for the not-provided field case but got %v\n", val.ErrorMap())
}
// use a table-driven test here
table := []struct {
allowedExts []string
expectedMessageContains []string
}{
{
allowedExts: []string{"jpg"},
expectedMessageContains: []string{
"The file extension .txt is not allowed.",
"include: jpg",
},
},
{
allowedExts: []string{"jpg", "png"},
expectedMessageContains: []string{
"The file extension .txt is not allowed.",
"include: jpg and png",
},
},
{
allowedExts: []string{"jpg", "png", "gif"},
expectedMessageContains: []string{
"The file extension .txt is not allowed.",
"include: jpg, png, and gif",
},
},
}
for i, test := range table {
val = data.Validator()
val.AcceptFileExts("file", test.allowedExts...)
if !val.HasErrors() {
t.Errorf("Expected val to have errors for test case %d but got none.", i)
continue // avoid index out-of-bounds error in proceeding lines
}
gotMsg := val.ErrorMap()["file"][0]
for _, expectedMsg := range test.expectedMessageContains {
if !strings.Contains(gotMsg, expectedMsg) {
t.Errorf(`Expected error in case %d to contain "%s" but it did not.%sGot: "%s"`, i, expectedMsg, "\n", gotMsg)
}
}
}
}
func ExampleValidator() {
// Construct a request object for example purposes only.
// Typically you would be using this inside a http.HandlerFunc,
// not constructing your own request.
req, _ := http.NewRequest("GET", "/", nil)
values := url.Values{}
values.Add("name", "Bob")
values.Add("age", "25")
req.PostForm = values
req.Header.Set("Content-Type", "form-urlencoded")
// Parse the form data.
data, _ := Parse(req)
// Validate the data.
val := data.Validator()
val.Require("name")
val.MinLength("name", 4)
val.Require("age")
// Here's how you can change the error message or field name
val.Require("retired").Field("retired_status").Message("Must specify whether or not person is retired.")
// Check for validation errors and print them if there are any.
if val.HasErrors() {
fmt.Printf("%#v\n", val.Messages())
}
// Output:
// []string{"name must be at least 4 characters long.", "Must specify whether or not person is retired."}
}