validatorsSpec.js

'use strict';

/* globals generateInputCompilerHelper: false */

describe('validators', function() {

  var helper = {}, $rootScope;

  generateInputCompilerHelper(helper);

  beforeEach(inject(function(_$rootScope_) {
    $rootScope = _$rootScope_;
  }));


  describe('pattern', function() {

    it('should validate in-lined pattern', function() {
      var inputElm = helper.compileInput('<input type="text" ng-model="value" ng-pattern="/^\\d\\d\\d-\\d\\d-\\d\\d\\d\\d$/" />');

      helper.changeInputValueTo('x000-00-0000x');
      expect(inputElm).toBeInvalid();

      helper.changeInputValueTo('000-00-0000');
      expect(inputElm).toBeValid();

      helper.changeInputValueTo('000-00-0000x');
      expect(inputElm).toBeInvalid();

      helper.changeInputValueTo('123-45-6789');
      expect(inputElm).toBeValid();

      helper.changeInputValueTo('x');
      expect(inputElm).toBeInvalid();
    });


    it('should listen on ng-pattern when pattern is observed', function() {
      var value, patternVal = /^\w+$/;
      var inputElm = helper.compileInput('<input type="text" ng-model="value" ng-pattern="pat" attr-capture />');
      helper.attrs.$observe('pattern', function(v) {
        value = helper.attrs.pattern;
      });

      $rootScope.$apply(function() {
        $rootScope.pat = patternVal;
      });

      expect(value).toBe(patternVal);
    });


    it('should validate in-lined pattern with modifiers', function() {
      var inputElm = helper.compileInput('<input type="text" ng-model="value" ng-pattern="/^abc?$/i" />');

      helper.changeInputValueTo('aB');
      expect(inputElm).toBeValid();

      helper.changeInputValueTo('xx');
      expect(inputElm).toBeInvalid();
    });


    it('should validate pattern from scope', function() {
      $rootScope.regexp = /^\d\d\d-\d\d-\d\d\d\d$/;
      var inputElm = helper.compileInput('<input type="text" ng-model="value" ng-pattern="regexp" />');

      helper.changeInputValueTo('x000-00-0000x');
      expect(inputElm).toBeInvalid();

      helper.changeInputValueTo('000-00-0000');
      expect(inputElm).toBeValid();

      helper.changeInputValueTo('000-00-0000x');
      expect(inputElm).toBeInvalid();

      helper.changeInputValueTo('123-45-6789');
      expect(inputElm).toBeValid();

      helper.changeInputValueTo('x');
      expect(inputElm).toBeInvalid();

      $rootScope.$apply(function() {
        $rootScope.regexp = /abc?/;
      });

      helper.changeInputValueTo('ab');
      expect(inputElm).toBeValid();

      helper.changeInputValueTo('xx');
      expect(inputElm).toBeInvalid();
    });


    it('should perform validations when the ngPattern scope value changes', function() {
      $rootScope.regexp = /^[a-z]+$/;
      var inputElm = helper.compileInput('<input type="text" ng-model="value" ng-pattern="regexp" />');

      helper.changeInputValueTo('abcdef');
      expect(inputElm).toBeValid();

      helper.changeInputValueTo('123');
      expect(inputElm).toBeInvalid();

      $rootScope.$apply(function() {
        $rootScope.regexp = /^\d+$/;
      });

      expect(inputElm).toBeValid();

      helper.changeInputValueTo('abcdef');
      expect(inputElm).toBeInvalid();

      $rootScope.$apply(function() {
        $rootScope.regexp = '';
      });

      expect(inputElm).toBeValid();
    });


    it('should register "pattern" with the model validations when the pattern attribute is used', function() {
      var inputElm = helper.compileInput('<input type="text" name="input" ng-model="value" pattern="^\\d+$" />');

      helper.changeInputValueTo('abcd');
      expect(inputElm).toBeInvalid();
      expect($rootScope.form.input.$error.pattern).toBe(true);

      helper.changeInputValueTo('12345');
      expect(inputElm).toBeValid();
      expect($rootScope.form.input.$error.pattern).not.toBe(true);
    });


    it('should not throw an error when scope pattern can\'t be found', function() {
      expect(function() {
        var inputElm = helper.compileInput('<input type="text" ng-model="foo" ng-pattern="fooRegexp" />');
        $rootScope.$apply('foo = \'bar\'');
      }).not.toThrow();
    });


    it('should throw an error when the scope pattern is not a regular expression', function() {
      expect(function() {
        var inputElm = helper.compileInput('<input type="text" ng-model="foo" ng-pattern="fooRegexp" />');
        $rootScope.$apply(function() {
          $rootScope.fooRegexp = {};
          $rootScope.foo = 'bar';
        });
      }).toThrowMinErr('ngPattern', 'noregexp', 'Expected fooRegexp to be a RegExp but was');
    });


    it('should be invalid if entire string does not match pattern', function() {
      var inputElm = helper.compileInput('<input type="text" name="test" ng-model="value" pattern="\\d{4}">');
      helper.changeInputValueTo('1234');
      expect($rootScope.form.test.$error.pattern).not.toBe(true);
      expect(inputElm).toBeValid();

      helper.changeInputValueTo('123');
      expect($rootScope.form.test.$error.pattern).toBe(true);
      expect(inputElm).not.toBeValid();

      helper.changeInputValueTo('12345');
      expect($rootScope.form.test.$error.pattern).toBe(true);
      expect(inputElm).not.toBeValid();
    });


    it('should be cope with patterns that start with ^', function() {
      var inputElm = helper.compileInput('<input type="text" name="test" ng-model="value" pattern="^\\d{4}">');
      helper.changeInputValueTo('1234');
      expect($rootScope.form.test.$error.pattern).not.toBe(true);
      expect(inputElm).toBeValid();

      helper.changeInputValueTo('123');
      expect($rootScope.form.test.$error.pattern).toBe(true);
      expect(inputElm).not.toBeValid();

      helper.changeInputValueTo('12345');
      expect($rootScope.form.test.$error.pattern).toBe(true);
      expect(inputElm).not.toBeValid();
    });


    it('should be cope with patterns that end with $', function() {
      var inputElm = helper.compileInput('<input type="text" name="test" ng-model="value" pattern="\\d{4}$">');
      helper.changeInputValueTo('1234');
      expect($rootScope.form.test.$error.pattern).not.toBe(true);
      expect(inputElm).toBeValid();

      helper.changeInputValueTo('123');
      expect($rootScope.form.test.$error.pattern).toBe(true);
      expect(inputElm).not.toBeValid();

      helper.changeInputValueTo('12345');
      expect($rootScope.form.test.$error.pattern).toBe(true);
      expect(inputElm).not.toBeValid();
    });


    it('should validate the viewValue and not the modelValue', function() {
      var inputElm = helper.compileInput('<input type="text" name="test" ng-model="value" pattern="\\d{4}">');
      var ctrl = inputElm.controller('ngModel');

      ctrl.$parsers.push(function(value) {
        return (value * 10) + '';
      });

      helper.changeInputValueTo('1234');
      expect($rootScope.form.test.$error.pattern).not.toBe(true);
      expect($rootScope.form.test.$modelValue).toBe('12340');
      expect(inputElm).toBeValid();
    });


    it('should validate on non-input elements', inject(function($compile) {
      $rootScope.pattern = '\\d{4}';
      var elm = $compile('<span ng-model="value" pattern="\\d{4}"></span>')($rootScope);
      var elmNg = $compile('<span ng-model="value" ng-pattern="pattern"></span>')($rootScope);
      var ctrl = elm.controller('ngModel');
      var ctrlNg = elmNg.controller('ngModel');

      expect(ctrl.$error.pattern).not.toBe(true);
      expect(ctrlNg.$error.pattern).not.toBe(true);

      ctrl.$setViewValue('12');
      ctrlNg.$setViewValue('12');

      expect(ctrl.$error.pattern).toBe(true);
      expect(ctrlNg.$error.pattern).toBe(true);
    }));
  });


  describe('minlength', function() {

    it('should invalidate values that are shorter than the given minlength', function() {
      var inputElm = helper.compileInput('<input type="text" ng-model="value" ng-minlength="3" />');

      helper.changeInputValueTo('aa');
      expect(inputElm).toBeInvalid();

      helper.changeInputValueTo('aaa');
      expect(inputElm).toBeValid();
    });


    it('should listen on ng-minlength when minlength is observed', function() {
      var value = 0;
      var inputElm = helper.compileInput('<input type="text" ng-model="value" ng-minlength="min" attr-capture />');
      helper.attrs.$observe('minlength', function(v) {
        value = toInt(helper.attrs.minlength);
      });

      $rootScope.$apply('min = 5');

      expect(value).toBe(5);
    });


    it('should observe the standard minlength attribute and register it as a validator on the model', function() {
      var inputElm = helper.compileInput('<input type="text" name="input" ng-model="value" minlength="{{ min }}" />');
      $rootScope.$apply('min = 10');

      helper.changeInputValueTo('12345');
      expect(inputElm).toBeInvalid();
      expect($rootScope.form.input.$error.minlength).toBe(true);

      $rootScope.$apply('min = 5');

      expect(inputElm).toBeValid();
      expect($rootScope.form.input.$error.minlength).not.toBe(true);
    });


    it('should validate when the model is initialized as a number', function() {
      $rootScope.value = 12345;
      var inputElm = helper.compileInput('<input type="text" name="input" ng-model="value" minlength="3" />');
      expect($rootScope.value).toBe(12345);
      expect($rootScope.form.input.$error.minlength).toBeUndefined();
    });

    it('should validate emptiness against the viewValue', function() {
      var inputElm = helper.compileInput('<input type="text" name="input" ng-model="value" minlength="3" />');

      var ctrl = inputElm.controller('ngModel');
      spyOn(ctrl, '$isEmpty').and.callThrough();

      ctrl.$parsers.push(function(value) {
        return value + '678';
      });

      helper.changeInputValueTo('12345');
      expect(ctrl.$isEmpty).toHaveBeenCalledWith('12345');
    });


    it('should validate on non-input elements', inject(function($compile) {
      $rootScope.min = 3;
      var elm = $compile('<span ng-model="value" minlength="{{min}}"></span>')($rootScope);
      var elmNg = $compile('<span ng-model="value" ng-minlength="min"></span>')($rootScope);
      var ctrl = elm.controller('ngModel');
      var ctrlNg = elmNg.controller('ngModel');

      expect(ctrl.$error.minlength).not.toBe(true);
      expect(ctrlNg.$error.minlength).not.toBe(true);

      ctrl.$setViewValue('12');
      ctrlNg.$setViewValue('12');

      expect(ctrl.$error.minlength).toBe(true);
      expect(ctrlNg.$error.minlength).toBe(true);
    }));
  });


  describe('maxlength', function() {

    it('should invalidate values that are longer than the given maxlength', function() {
      var inputElm = helper.compileInput('<input type="text" ng-model="value" ng-maxlength="5" />');

      helper.changeInputValueTo('aaaaaaaa');
      expect(inputElm).toBeInvalid();

      helper.changeInputValueTo('aaa');
      expect(inputElm).toBeValid();
    });


    it('should only accept empty values when maxlength is 0', function() {
      var inputElm = helper.compileInput('<input type="text" ng-model="value" ng-maxlength="0" />');

      helper.changeInputValueTo('');
      expect(inputElm).toBeValid();

      helper.changeInputValueTo('a');
      expect(inputElm).toBeInvalid();
    });


    it('should accept values of any length when maxlength is negative', function() {
      var inputElm = helper.compileInput('<input type="text" ng-model="value" ng-maxlength="-1" />');

      helper.changeInputValueTo('');
      expect(inputElm).toBeValid();

      helper.changeInputValueTo('aaaaaaaaaa');
      expect(inputElm).toBeValid();
    });


    it('should accept values of any length when maxlength is non-numeric', function() {
      var inputElm = helper.compileInput('<input type="text" ng-model="value" ng-maxlength="maxlength" />');
      helper.changeInputValueTo('aaaaaaaaaa');

      $rootScope.$apply('maxlength = "5"');
      expect(inputElm).toBeInvalid();

      $rootScope.$apply('maxlength = "abc"');
      expect(inputElm).toBeValid();

      $rootScope.$apply('maxlength = ""');
      expect(inputElm).toBeValid();

      $rootScope.$apply('maxlength = null');
      expect(inputElm).toBeValid();

      $rootScope.someObj = {};
      $rootScope.$apply('maxlength = someObj');
      expect(inputElm).toBeValid();
    });


    it('should listen on ng-maxlength when maxlength is observed', function() {
      var value = 0;
      var inputElm = helper.compileInput('<input type="text" ng-model="value" ng-maxlength="max" attr-capture />');
      helper.attrs.$observe('maxlength', function(v) {
        value = toInt(helper.attrs.maxlength);
      });

      $rootScope.$apply('max = 10');

      expect(value).toBe(10);
    });


    it('should observe the standard maxlength attribute and register it as a validator on the model', function() {
      var inputElm = helper.compileInput('<input type="text" name="input" ng-model="value" maxlength="{{ max }}" />');
      $rootScope.$apply('max = 1');

      helper.changeInputValueTo('12345');
      expect(inputElm).toBeInvalid();
      expect($rootScope.form.input.$error.maxlength).toBe(true);

      $rootScope.$apply('max = 6');

      expect(inputElm).toBeValid();
      expect($rootScope.form.input.$error.maxlength).not.toBe(true);
    });


    it('should assign the correct model after an observed validator became valid', function() {
      var inputElm = helper.compileInput('<input type="text" name="input" ng-model="value" maxlength="{{ max }}" />');

      $rootScope.$apply('max = 1');
      helper.changeInputValueTo('12345');
      expect($rootScope.value).toBeUndefined();

      $rootScope.$apply('max = 6');
      expect($rootScope.value).toBe('12345');
    });


    it('should assign the correct model after an observed validator became invalid', function() {
      var inputElm = helper.compileInput('<input type="text" name="input" ng-model="value" maxlength="{{ max }}" />');

      $rootScope.$apply('max = 6');
      helper.changeInputValueTo('12345');
      expect($rootScope.value).toBe('12345');

      $rootScope.$apply('max = 1');
      expect($rootScope.value).toBeUndefined();
    });


    it('should leave the value as invalid if observed maxlength changed, but is still invalid', function() {
      var inputElm = helper.compileInput('<input type="text" name="input" ng-model="value" maxlength="{{ max }}" />');
      $rootScope.$apply('max = 1');

      helper.changeInputValueTo('12345');
      expect(inputElm).toBeInvalid();
      expect($rootScope.form.input.$error.maxlength).toBe(true);
      expect($rootScope.value).toBeUndefined();

      $rootScope.$apply('max = 3');

      expect(inputElm).toBeInvalid();
      expect($rootScope.form.input.$error.maxlength).toBe(true);
      expect($rootScope.value).toBeUndefined();
    });


    it('should not notify if observed maxlength changed, but is still invalid', function() {
      var inputElm = helper.compileInput('<input type="text" name="input" ng-model="value" ng-change="ngChangeSpy()" ' +
                   'maxlength="{{ max }}" />');

      $rootScope.$apply('max = 1');
      helper.changeInputValueTo('12345');

      $rootScope.ngChangeSpy = jasmine.createSpy();
      $rootScope.$apply('max = 3');

      expect($rootScope.ngChangeSpy).not.toHaveBeenCalled();
    });


    it('should leave the model untouched when validating before model initialization', function() {
      $rootScope.value = '12345';
      var inputElm = helper.compileInput('<input type="text" name="input" ng-model="value" minlength="3" />');
      expect($rootScope.value).toBe('12345');
    });


    it('should validate when the model is initialized as a number', function() {
      $rootScope.value = 12345;
      var inputElm = helper.compileInput('<input type="text" name="input" ng-model="value" maxlength="10" />');
      expect($rootScope.value).toBe(12345);
      expect($rootScope.form.input.$error.maxlength).toBeUndefined();
    });

    it('should validate emptiness against the viewValue', function() {
      var inputElm = helper.compileInput('<input type="text" name="input" ng-model="value" maxlength="10" />');

      var ctrl = inputElm.controller('ngModel');
      spyOn(ctrl, '$isEmpty').and.callThrough();

      ctrl.$parsers.push(function(value) {
        return value + '678';
      });

      helper.changeInputValueTo('12345');
      expect(ctrl.$isEmpty).toHaveBeenCalledWith('12345');
    });


    it('should validate on non-input elements', inject(function($compile) {
      $rootScope.max = 3;
      var elm = $compile('<span ng-model="value" maxlength="{{max}}"></span>')($rootScope);
      var elmNg = $compile('<span ng-model="value" ng-maxlength="max"></span>')($rootScope);
      var ctrl = elm.controller('ngModel');
      var ctrlNg = elmNg.controller('ngModel');

      expect(ctrl.$error.maxlength).not.toBe(true);
      expect(ctrlNg.$error.maxlength).not.toBe(true);

      ctrl.$setViewValue('1234');
      ctrlNg.$setViewValue('1234');

      expect(ctrl.$error.maxlength).toBe(true);
      expect(ctrlNg.$error.maxlength).toBe(true);
    }));
  });


  describe('required', function() {

    it('should allow bindings via ngRequired', function() {
      var inputElm = helper.compileInput('<input type="text" ng-model="value" ng-required="required" />');

      $rootScope.$apply('required = false');

      helper.changeInputValueTo('');
      expect(inputElm).toBeValid();


      $rootScope.$apply('required = true');
      expect(inputElm).toBeInvalid();

      $rootScope.$apply('value = \'some\'');
      expect(inputElm).toBeValid();

      helper.changeInputValueTo('');
      expect(inputElm).toBeInvalid();

      $rootScope.$apply('required = false');
      expect(inputElm).toBeValid();
    });


    it('should invalid initial value with bound required', function() {
      var inputElm = helper.compileInput('<input type="text" ng-model="value" required="{{required}}" />');

      $rootScope.$apply('required = true');

      expect(inputElm).toBeInvalid();
    });


    it('should be $invalid but $pristine if not touched', function() {
      var inputElm = helper.compileInput('<input type="text" ng-model="name" name="alias" required />');

      $rootScope.$apply('name = null');

      expect(inputElm).toBeInvalid();
      expect(inputElm).toBePristine();

      helper.changeInputValueTo('');
      expect(inputElm).toBeInvalid();
      expect(inputElm).toBeDirty();
    });


    it('should allow empty string if not required', function() {
      var inputElm = helper.compileInput('<input type="text" ng-model="foo" />');
      helper.changeInputValueTo('a');
      helper.changeInputValueTo('');
      expect($rootScope.foo).toBe('');
    });


    it('should set $invalid when model undefined', function() {
      var inputElm = helper.compileInput('<input type="text" ng-model="notDefined" required />');
      expect(inputElm).toBeInvalid();
    });


    it('should consider bad input as an error before any other errors are considered', function() {
      var inputElm = helper.compileInput('<input type="text" ng-model="value" required />', { badInput: true });
      var ctrl = inputElm.controller('ngModel');
      ctrl.$parsers.push(function() {
        return undefined;
      });

      helper.changeInputValueTo('abc123');

      expect(ctrl.$error.parse).toBe(true);
      expect(inputElm).toHaveClass('ng-invalid-parse');
      expect(inputElm).toBeInvalid(); // invalid because of the number validator
    });


    it('should allow `false` as a valid value when the input type is not "checkbox"', function() {
      var inputElm = helper.compileInput('<input type="radio" ng-value="true" ng-model="answer" required />' +
        '<input type="radio" ng-value="false" ng-model="answer" required />');

      $rootScope.$apply();
      expect(inputElm).toBeInvalid();

      $rootScope.$apply('answer = true');
      expect(inputElm).toBeValid();

      $rootScope.$apply('answer = false');
      expect(inputElm).toBeValid();
    });


    it('should validate emptiness against the viewValue', function() {
      var inputElm = helper.compileInput('<input type="text" name="input" ng-model="value" required />');

      var ctrl = inputElm.controller('ngModel');
      spyOn(ctrl, '$isEmpty').and.callThrough();

      ctrl.$parsers.push(function(value) {
        return value + '678';
      });

      helper.changeInputValueTo('12345');
      expect(ctrl.$isEmpty).toHaveBeenCalledWith('12345');
    });


    it('should validate on non-input elements', inject(function($compile) {
      $rootScope.value = '12';
      var elm = $compile('<span ng-model="value" required></span>')($rootScope);
      var elmNg = $compile('<span ng-model="value" ng-required="true"></span>')($rootScope);
      var ctrl = elm.controller('ngModel');
      var ctrlNg = elmNg.controller('ngModel');

      expect(ctrl.$error.required).not.toBe(true);
      expect(ctrlNg.$error.required).not.toBe(true);

      ctrl.$setViewValue('');
      ctrlNg.$setViewValue('');

      expect(ctrl.$error.required).toBe(true);
      expect(ctrlNg.$error.required).toBe(true);
    }));
  });
});