我有一个类似于下面的组件,并希望测试mgo.Index
方法在绑定type Index struct {
Key []string // Index key fields; prefix name with dash (-) for descending order
Unique bool // Prevent two documents from having the same index key
DropDups bool // Drop documents with the same index key as a previously indexed one
Background bool // Build index in background and return immediately
Sparse bool // Only index documents containing the Key fields
// If ExpireAfter is defined the server will periodically delete
// documents with indexed time.Time older than the provided delta.
ExpireAfter time.Duration
// Name holds the stored index name. On creation if this field is unset it is
// computed by EnsureIndex based on the index key.
Name string
// Properties for spatial indexes.
//
// Min and Max were improperly typed as int when they should have been
// floats. To preserve backwards compatibility they are still typed as
// int and the following two fields enable reading and writing the same
// fields as float numbers. In mgo.v3, these fields will be dropped and
// Min/Max will become floats.
Min, Max int
Minf, Maxf float64
BucketSize float64
Bits int
// Properties for text indexes.
DefaultLanguage string
LanguageOverride string
// Weights defines the significance of provided fields relative to other
// fields in a text index. The score for a given word in a document is derived
// from the weighted sum of the frequency for each of the indexed fields in
// that document. The default field weight is 1.
Weights map[string]int
// Collation defines the collation to use for the index.
Collation *Collation
}
更改时的作用。
我整个上午都试过,但找不到办法解决这个问题。
$onChange
我希望我的测试表现得像是更改绑定值的组件父级。
myBinding
这可能吗?怎么样? 任何提示? Plunker,CodePen或其他示例?
答案 0 :(得分:3)
测试AngularJS组件与测试指令没有多大区别。
要测试控制器的方法/属性,可以使用element.controller("componentName")
method访问组件控制器的实例(componentName
- 是camelCase指令/组件名称)。
以下是使用$compile
service测试组件和$onChanges
挂钩的示例:
angular.module('myApp', [])
.component('myComponent', {
bindings: {
myBinding: '<'
},
template: '<div>{{$ctrl.result}}</div>',
controller: 'myComponentController'
})
.controller('myComponentController', ['$filter', 'myService', function myComponentController($filter, myService) {
var ctrl = this;
ctrl.$onInit = onInit;
ctrl.$onChanges = onChanges;
function onInit() {
ctrl.result = ctrl.myBinding;
}
function onChanges(changes) {
if (angular.isDefined(changes.myBinding)) {
if (angular.isDefined(changes.myBinding.currentValue)) {
if (!angular.equals(changes.myBinding.currentValue, changes.myBinding.previousValue)) {
myService.doSomething(changes.myBinding.currentValue).then(
function (data) {
ctrl.result = data;
}
);
}
}
}
}
}])
.service('myService', ['$timeout', function ($timeout) {
return {
doSomething: function (x) {
return $timeout(function () {
return x * 3;
}, 500);
}
};
}]);
/*
TEST GO HERE
*/
describe('Testing a component controller', function() {
var $scope, ctrl, $timeout, myService;
beforeEach(module('myApp', function ($provide) {
}));
beforeEach(inject(function ($injector) {
myService = $injector.get('myService');
$timeout = $injector.get('$timeout');
}));
describe('with $compile', function () {
var element;
var scope;
var controller;
beforeEach(inject(function ($rootScope, $compile) {
scope = $rootScope.$new();
scope.myBinding = 10;
element = angular.element('<my-component my-binding="myBinding"></my-component>');
element = $compile(element)(scope);
controller = element.controller('myComponent');
scope.$apply();
}));
it('should render template', function () {
expect(element[0].innerText).toBe('10'); //initial
$timeout.flush(); //onchanges happened and promise resolved from the service
//undefined -> 10
expect(element[0].innerText).toBe('30');
});
it('should reflect to changes', function () {
spyOn(myService, "doSomething").and.callThrough();
scope.myBinding = 15; //change the binding
scope.$apply(); //we need to call $apply to pass the changes down to the component
$timeout.flush();
expect(myService.doSomething).toHaveBeenCalled(); // check if service method was called
expect(controller.result).toBe(45); // check controller's result value
});
})
});
.as-console-wrapper {
height:0;
}
<!DOCTYPE html>
<html>
<head>
<!-- jasmine -->
<script src="//cdnjs.cloudflare.com/ajax/libs/jasmine/2.8.0/jasmine.js"></script>
<!-- jasmine's html reporting code and css -->
<script src="//cdnjs.cloudflare.com/ajax/libs/jasmine/2.8.0/jasmine-html.js"></script>
<link href="//cdnjs.cloudflare.com/ajax/libs/jasmine/2.8.0/jasmine.css" rel="stylesheet" />
<script src="//cdnjs.cloudflare.com/ajax/libs/jasmine/2.8.0/boot.js"></script>
<!-- angular itself -->
<script src="//ajax.googleapis.com/ajax/libs/angularjs/1.6.4/angular.js"></script>
<!-- angular's testing helpers -->
<script src="//ajax.googleapis.com/ajax/libs/angularjs/1.6.4/angular-mocks.js"></script>
</head>
<body>
<!-- bootstrap jasmine! -->
<script>
var jasmineEnv = jasmine.getEnv();
// Tell it to add an Html Reporter
// this will add detailed HTML-formatted results
// for each spec ran.
jasmineEnv.addReporter(new jasmine.HtmlReporter());
// Execute the tests!
jasmineEnv.execute();
</script>
</body>
</html>
您还可以使用$componentController
service测试您的组件。但在这种情况下,您需要在测试中显式调用生命周期钩子,例如:
ctrl = $componentController('myComponent', {$scope: scope}, { myBinding: 10 });
ctrl.$onInit();
要测试$onChanges
挂钩,您需要传递一个“正确”构造的更改对象作为参数:
angular.module('myApp', [])
.component('myComponent', {
bindings: {
myBinding: '<'
},
template: '<div>{{$ctrl.result}}</div>',
controller: 'myComponentController'
})
.controller('myComponentController', ['$filter', 'myService', function myComponentController($filter, myService) {
var ctrl = this;
ctrl.$onInit = onInit;
ctrl.$onChanges = onChanges;
function onInit() {
ctrl.result = ctrl.myBinding;
}
function onChanges(changes) {
if (angular.isDefined(changes.myBinding)) {
if (angular.isDefined(changes.myBinding.currentValue)) {
if (!angular.equals(changes.myBinding.currentValue, changes.myBinding.previousValue)) {
myService.doSomething(changes.myBinding.currentValue).then(
function (data) {
ctrl.result = data;
}
);
}
}
}
}
}])
.service('myService', ['$timeout', function ($timeout) {
return {
doSomething: function (x) {
return $timeout(function () {
return x * 3;
}, 500);
}
};
}]);
/*
TEST GO HERE
*/
describe('Testing a component controller', function () {
var $scope, ctrl, $timeout, myService;
beforeEach(module('myApp', function ($provide) {
}));
beforeEach(inject(function ($injector) {
myService = $injector.get('myService');
$timeout = $injector.get('$timeout');
}));
describe('with $componentController', function () {
var scope;
var controller;
beforeEach(inject(function ($rootScope, $componentController) {
scope = $rootScope.$new();
scope.myBinding = 10;
controller = $componentController('myComponent', {$scope: scope}, {myBinding: 10});
controller.$onInit();
}));
it('should reflect to changes', function () {
spyOn(myService, "doSomething").and.callThrough();
controller.$onChanges({myBinding: {currentValue: 15, previousValue: 10}});
$timeout.flush(); // resolve service promise
expect(myService.doSomething).toHaveBeenCalled(); // check if service method was called
expect(controller.result).toBe(45); // check controller's result value
});
})
});
.as-console-wrapper {
height:0;
}
<!DOCTYPE html>
<html>
<head>
<!-- jasmine -->
<script src="//cdnjs.cloudflare.com/ajax/libs/jasmine/2.8.0/jasmine.js"></script>
<!-- jasmine's html reporting code and css -->
<script src="//cdnjs.cloudflare.com/ajax/libs/jasmine/2.8.0/jasmine-html.js"></script>
<link href="//cdnjs.cloudflare.com/ajax/libs/jasmine/2.8.0/jasmine.css" rel="stylesheet" />
<script src="//cdnjs.cloudflare.com/ajax/libs/jasmine/2.8.0/boot.js"></script>
<!-- angular itself -->
<script src="//ajax.googleapis.com/ajax/libs/angularjs/1.6.4/angular.js"></script>
<!-- angular's testing helpers -->
<script src="//ajax.googleapis.com/ajax/libs/angularjs/1.6.4/angular-mocks.js"></script>
</head>
<body>
<!-- bootstrap jasmine! -->
<script>
var jasmineEnv = jasmine.getEnv();
// Tell it to add an Html Reporter
// this will add detailed HTML-formatted results
// for each spec ran.
jasmineEnv.addReporter(new jasmine.HtmlReporter());
// Execute the tests!
jasmineEnv.execute();
</script>
</body>
</html>
P.S。: $onChange
不是组件生命周期挂钩的有效名称。它should be $onChanges
。