angularjs自动化测试系列之jasmine
jasmine参考
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/*
Created by laixiangran on 2015/12/15.
jasmine测试脚本
*/
(function() {
/*
jasmine基本语法介绍：
describe(string, function)：可以理解为是一个测试集或者测试包（官方称之为suite），主要功能是用来划分单元测试的，describe是可以嵌套使用的
参数string：描述测试包的信息
参数function：测试集的具体实现，可包含任意代码
it(string, function)：测试用例（官方称之为spec）
参数string：描述测试用例的信息
参数function：测试用例的具体实现，可包含任意代码
expect：断言表达式
从以下例子可知：
1、每个测试文件中可以包含多个describe
2、每个describe中可以包含多个it
3、每个it中可以包含多个expect
4、describe可嵌套使用
*/
describe("Jasmine Test 1", function() {
it("a spec with an expectation", function() {
expect(1).toBe(1);
expect(1===1).toBe(true);
expect("a").not.toBe("b");
});
it("an other spec in current suite", function() {
expect(true).toBe(true);
});
});
describe("Jasmine Test 2", function() {
it("nothing", function() {
});
});
describe("Jasmine Test 3", function() {
describe("Jasmine Test 4", function() {
it("b等于b", function() {
expect("b").toBe("b");
});
it("1===1是正确的", function() {
expect(1===1).toBe(true);
});
});
});
/*
* expect的匹配器
* */
describe("Included matchers:", function() {
//"toBe"基本类型判断
it("The 'toBe' matcher compares with ===", function() {
var a = 12;
var b = a;
expect(a).toBe(b);
expect(a).not.toBe(null);
});
//"toEqual"除了能判断基本类型（相当于"toBe"），还能判断对象
describe("The 'toEqual' matcher", function() {
//基本类型判断
it("works for simple literals and variables", function() {
var a = 12;
expect(a).toEqual(12);
});
//对象判断
it("should work for objects", function() {
var foo = {
a: 12,
b: 34
};
var bar = {
a: 12,
b: 34
};
expect(foo).toEqual(bar);
});
});
//"toMatch"使用正则表达式判断
it("The 'toMatch' matcher is for regular expressions", function() {
var message = "foo bar baz";
expect(message).toMatch(/bar/);
expect(message).toMatch("bar");
expect(message).not.toMatch(/quux/);
});
//"toBeDefined"判断是否定义
it("The 'toBeDefined' matcher compares against 'undefined'", function() {
var a = {
foo: "foo"
};
expect(a.foo).toBeDefined();
expect(a.bar).not.toBeDefined();
});
//"toBeUndefined"判断是否是undefined，与"toBeDefined"相反
it("The 'toBeUndefined' matcher compares against 'undefined'", function() {
var a = {
foo: "foo"
};
expect(a.foo).not.toBeUndefined();
expect(a.bar).toBeUndefined();
});
//"toBeNull"判断是否为null
it("The 'toBeNull' matcher compares against null", function() {
var a = null;
var foo = "foo";
expect(null).toBeNull();
expect(a).toBeNull();
expect(foo).not.toBeNull();
});
//"toBeTruthy"判断是否是true
it("The 'toBeTruthy' matcher is for boolean casting testing", function() {
var a, foo = "foo";
expect(foo).toBeTruthy();
expect(a).not.toBeTruthy();
expect(true).toBeTruthy();
});
//"toBeFalsy"判断是否是false
it("The 'toBeFalsy' matcher is for boolean casting testing", function() {
var a, foo = "foo";
expect(a).toBeFalsy();
expect(foo).not.toBeFalsy();
expect(false).toBeFalsy();
});
//"toContain"判断数组是否包含（可判断基本类型和对象）
it("The 'toContain' matcher is for finding an item in an Array", function() {
var a = ["foo", "bar", "baz"];
var b = [{foo: "foo", bar: "bar"}, {baz: "baz", bar: "bar"}];
expect(a).toContain("bar");
expect(a).not.toContain("quux");
expect(b).toContain({foo: "foo", bar: "bar"});
expect(b).not.toContain({foo: "foo", baz: "baz"});
});
//"toBeLessThan"判断值类型的大小，结果若小则为True（也可以判断字符及字符串，以ascii码的大小为判断依据）
it("The 'toBeLessThan' matcher is for mathematical comparisons", function() {
var pi = 3.1415926,
e = 2.78;
expect(e).toBeLessThan(pi);
expect(pi).not.toBeLessThan(e);
expect("a").toBeLessThan("b");
expect("b").not.toBeLessThan("a");
});
//"toBeGreaterThan"判断值类型的大小，结果若大则为True，与toBeLessThan相反（也可以判断字符及字符串，以ascii码的大小为判断依据）
it("The 'toBeGreaterThan' matcher is for mathematical comparisons", function() {
var pi = 3.1415926,
e = 2.78;
expect(pi).toBeGreaterThan(e);
expect(e).not.toBeGreaterThan(pi);
expect("a").not.toBeGreaterThan("b");
expect("b").toBeGreaterThan("a");
});
//"toBeCloseTo"判断数字是否相似（第二个参数为小数精度，默认为2位）
it("The 'toBeCloseTo' matcher is for precision math comparison", function() {
var a = 1.1;
var b = 1.5;
var c = 1.455;
var d = 1.459;
expect(a).toBeCloseTo(b, 0);
expect(a).not.toBeCloseTo(c, 1);
expect(c).toBeCloseTo(d);
});
//"toThrow"判断是否抛出异常
it("The 'toThrow' matcher is for testing if a function throws an exception", function() {
var foo = function() {
return 1 + 2;
};
var bar = function() {
return a + 1;
};
expect(foo).not.toThrow();
expect(bar).toThrow();
});
//"toThrowError"判断是否抛出了指定的错误
it("The 'toThrowError' matcher is for testing a specific thrown exception", function() {
var foo = function() {
throw new TypeError("foo bar baz");
};
expect(foo).toThrowError("foo bar baz");
expect(foo).toThrowError(/bar/);
expect(foo).toThrowError(TypeError);
expect(foo).toThrowError(TypeError, "foo bar baz");
});
});
/*
* "fail"函数能使一个测试用例失败，参数为自定义的失败信息
* */
describe("A spec using the fail function", function() {
var foo = function(x, callBack) {
if (x) {
callBack();
}
};
it("should not call the callBack", function() {
foo(false, function() {
fail("Callback has been called");
});
});
});
/*
Jasmine允许在执行测试集/测试用例的开始前/结束后做一些初始化/销毁的操作。
Setup方法：
beforeAll：每个suite（即describe）中所有spec（即it）运行之前运行
beforeEach：每个spec（即it）运行之前运行
Teardown方法：
afterAll：每个suite（即describe）中所有spec（即it）运行之后运行
afterEach：每个spec（即it）运行之后运行
* */
var globalCount;
describe("Setup and Teardown suite 1", function() {
var suiteGlobalCount;
var eachTestCount;
beforeAll(function() {
globalCount = 0;
suiteGlobalCount = 0;
eachTestCount = 0;
});
afterAll(function() {
suiteGlobalCount = 0;
});
beforeEach(function() {
globalCount++;
suiteGlobalCount++;
eachTestCount++;
});
afterEach(function() {
eachTestCount = 0;
});
it("Spec 1", function() {
expect(globalCount).toBe(1);
expect(suiteGlobalCount).toBe(1);
expect(eachTestCount).toBe(1);
});
it("Spec 2", function() {
expect(globalCount).toBe(2);
expect(suiteGlobalCount).toBe(2);
expect(eachTestCount).toBe(1);
});
});
describe("Setup and Teardown suite 2", function() {
beforeEach(function() {
globalCount += 2;
});
it("Spec 1", function() {
expect(globalCount).toBe(4);
});
});
/*
* 在beforeEach - it - afterEach中，还可以使用this关键字定义变量。需要注意的是，使用this关键字声明的变量，仅在beforeEach - it - afterEach这个过程中传递
* */
describe("Test 'this'", function() {
beforeEach(function() {
this.testCount = this.testCount || 0;
this.testCount++;
});
afterEach(function() {
//this.testCount = 0; //无论是否有这行，结果是一样的，因为this指定的变量只能在每个spec的beforeEach/it/afterEach过程中传递
});
it("Spec 1", function() {
expect(this.testCount).toBe(1);
});
it("Spec 2", function() {
expect(this.testCount).toBe(1);
});
});
/*
在实际项目中，需要由于发布的版本需要选择测试用例包，xdescribe和xit能很方便的将不包含在版本中的测试用例排除在外。
不过xdescribe和xit略有不同：
xdescribe：该describe下的所有it将被忽略，Jasmine将直接忽略这些it，因此不会被运行
xit：运行到该it时，挂起它不执行
* */
xdescribe("Test xdescribe", function() {
it("Spec 1", function() {
expect(1).toBe(1);
});
it("Spec 2", function() {
expect(2).toBe(2);
});
});
describe("Test xit", function() {
it("Spec 1", function() {
expect(1).toBe(1);
});
xit("Spec 2", function() {
expect(2).toBe(1);
});
xit("Spec 3", function() {
expect(3).toBe(3);
});
});
/*
* Spy用来追踪函数的调用历史信息（是否被调用、调用参数列表、被请求次数等）。Spy仅存在于定义它的describe和it方法块中，并且每次在spec执行完之后被销毁。
* 当在一个对象上使用spyOn方法后即可模拟调用对象上的函数，此时对所有函数的调用是不会执行实际代码的。
* 两个Spy常用的expect：
* toHaveBeenCalled: 函数是否被调用
* toHaveBeenCalledWith: 调用函数时的参数
* */
describe("A spy", function() {
var foo, bar = null;
beforeEach(function() {
foo = {
setBar: function(value) {
bar = value;
}
};
spyOn(foo, "setBar"); // 在foo对象上添加spy
// 此时调用foo对象上的方法，均为模拟调用，因此不会执行实际的代码
foo.setBar(123); // 调用foo的setBar方法
foo.setBar(456, "another param");
});
it("tracks that the spy was called", function() {
expect(foo.setBar).toHaveBeenCalled(); //判断foo的setBar是否被调用
});
it("tracks all the arguments of its calls", function() {
expect(foo.setBar).toHaveBeenCalledWith(123); //判断被调用时的参数
expect(foo.setBar).toHaveBeenCalledWith(456, "another param");
});
it("stops all execution on a function", function() {
expect(bar).toBeNull(); // 由于是模拟调用，因此bar值并没有改变
});
});
/*
* spyOn().and.callThrough()，告诉Jasmine我们除了要完成对函数调用的跟踪，同时也需要执行实际的代码。
* */
describe("A spy, when configured to call through", function() {
var foo, bar, fetchedBar;
beforeEach(function() {
foo = {
setBar: function(value) {
bar = value;
},
getBar: function() {
return bar;
}
};
spyOn(foo, "getBar").and.callThrough(); // 这里使用了callThrough，这时所有的函数调用为真实的执行
spyOn(foo, "setBar").and.callThrough();
foo.setBar(123);
fetchedBar = foo.getBar();
});
it("tracks that the spy was called", function() {
expect(foo.getBar).toHaveBeenCalled();
});
it("should not effect other functions", function() {
expect(foo.setBar).toHaveBeenCalledWith(123);
expect(bar).toEqual(123); // 由于是真实调用，因此bar有了真实的值
});
it("when called returns the requested value", function() {
expect(fetchedBar).toEqual(123); // 由于是真实调用，fetchedBar也有了真实的值
});
});
/*
* spyOn().and.returnValue()，由于Spy是模拟函数的调用，因此我们也可以强制指定函数的返回值。
* */
describe("A spy, when configured to fake a return value", function() {
var foo, bar, fetchedBar;
beforeEach(function() {
foo = {
setBar: function(value) {
bar = value;
},
getBar: function() {
return bar;
}
};
spyOn(foo, "getBar").and.returnValue(745); // 这将指定getBar方法返回值为745
foo.setBar(123);
fetchedBar = foo.getBar();
});
it("tracks that the spy was called", function() {
expect(foo.getBar).toHaveBeenCalled();
});
it("should not effect other functions", function() {
expect(bar).toEqual(123);
});
it("when called returns the requested value", function() {
expect(fetchedBar).toEqual(745);
});
});
/*
* spyOn().and.callFake()，
* 与returnValue相似，callFake则更进一步，直接通过指定一个假的自定义函数来执行。这种方式比returnValue更灵活，我们可以任意捏造一个函数来达到我们的测试要求。
* */
describe("A spy, when configured with an alternate implementation", function() {
var foo, bar, fetchedBar;
beforeEach(function() {
foo = {
setBar: function(value) {
bar = value;
},
getBar: function() {
return bar;
}
};
spyOn(foo, "getBar").and.callFake(function() {
return 1001;
});
foo.setBar(123);
fetchedBar = foo.getBar();
});
it("tracks that the spy was called", function() {
expect(foo.getBar).toHaveBeenCalled();
});
it("should not effect other functions", function() {
expect(bar).toEqual(123);
});
it("when called returns the requested value", function() {
expect(fetchedBar).toEqual(1001);
});
});
/*
* spyOn().and.throwError()，模拟异常的抛出
* */
describe("A spy, when configured to throw an error", function() {
var foo, bar;
beforeEach(function() {
foo = {
setBar: function(value) {
bar = value;
}
};
spyOn(foo, "setBar").and.throwError("quux");
});
it("throws the value", function() {
expect(function() {
foo.setBar(123)
}).toThrowError("quux");
});
});
/*
* spyOn().and.stub()，回复到原始的spyOn()方法
* */
describe("A spy", function() {
var foo, bar = null;
beforeEach(function() {
foo = {
setBar: function(value) {
bar = value;
},
getBar: function(){
return bar;
}
};
spyOn(foo, "setBar").and.callThrough(); // 标记1
spyOn(foo, "getBar").and.returnValue(999); // 标记2
});
it("can call through and then stub in the same spec", function() {
foo.setBar(123);
expect(bar).toEqual(123);
var getValue = foo.getBar();
expect(getValue).toEqual(999);
foo.setBar.and.stub(); // 相当于"标记1"中的代码变为了spyOn(foo, "setBar")
foo.getBar.and.stub(); // 相当于"标记2"中的代码变为了spyOn(foo, "getBar")
bar = null;
foo.setBar(123);
expect(bar).toBe(null);
expect(foo.setBar).toHaveBeenCalled(); // 函数调用追踪并没有被重置
getValue = foo.getBar();
expect(getValue).toEqual(undefined);
expect(foo.getBar).toHaveBeenCalled(); // 函数调用追踪并没有被重置
});
});
/*
* 其他追踪属性：
calls：对于被Spy的函数的调用，都可以在calls属性中跟踪。
.calls.any(): 被Spy的函数一旦被调用过，则返回true，否则为false；
.calls.count(): 返回被Spy的函数的被调用次数；
.calls.argsFor(index): 返回被Spy的函数的调用参数，以index来指定参数；
.calls.allArgs():返回被Spy的函数的所有调用参数；
.calls.all(): 返回calls的上下文，这将返回当前calls的整个实例数据；
.calls.mostRecent(): 返回calls中追踪的最近一次的请求数据；
.calls.first(): 返回calls中追踪的第一次请求的数据；
.object: 当调用all()，mostRecent()，first()方法时，返回对象的object属性返回的是当前上下文对象；
.calls.reset(): 重置Spy的所有追踪数据；
* */
describe("A spy", function() {
var foo, bar = null;
beforeEach(function() {
foo = {
setBar: function(value) {
bar = value;
}
};
spyOn(foo, "setBar");
});
//.calls.any(): 被Spy的函数一旦被调用过，则返回true，否则为false；
it("tracks if it was called at all", function() {
expect(foo.setBar.calls.any()).toEqual(false);
foo.setBar();
expect(foo.setBar.calls.any()).toEqual(true);
});
//.calls.count(): 返回被Spy的函数的被调用次数；
it("tracks the number of times it was called", function() {
expect(foo.setBar.calls.count()).toEqual(0);
foo.setBar();
foo.setBar();
expect(foo.setBar.calls.count()).toEqual(2);
});
//.calls.argsFor(index): 返回被Spy的函数的调用参数，以index来指定参数；
it("tracks the arguments of each call", function() {
foo.setBar(123);
foo.setBar(456, "baz");
expect(foo.setBar.calls.argsFor(0)).toEqual([123]);
expect(foo.setBar.calls.argsFor(1)).toEqual([456, "baz"]);
});
//.calls.allArgs():返回被Spy的函数的所有调用参数；
it("tracks the arguments of all calls", function() {
foo.setBar(123);
foo.setBar(456, "baz");
expect(foo.setBar.calls.allArgs()).toEqual([[123],[456, "baz"]]);
});
//.calls.all(): 返回calls的上下文，这将返回当前calls的整个实例数据；
it("can provide the context and arguments to all calls", function() {
foo.setBar(123);
expect(foo.setBar.calls.all()).toEqual([{object: foo, args: [123], returnValue: undefined}]);
});
//.calls.mostRecent(): 返回calls中追踪的最近一次的请求数据；
it("has a shortcut to the most recent call", function() {
foo.setBar(123);
foo.setBar(456, "baz");
expect(foo.setBar.calls.mostRecent()).toEqual({object: foo, args: [456, "baz"], returnValue: undefined});
});
//.calls.first(): 返回calls中追踪的第一次请求的数据；
it("has a shortcut to the first call", function() {
foo.setBar(123);
foo.setBar(456, "baz");
expect(foo.setBar.calls.first()).toEqual({object: foo, args: [123], returnValue: undefined});
});
//.object: 当调用all()，mostRecent()，first()方法时，返回对象的object属性返回的是当前上下文对象；
it("tracks the context", function() {
var spy = jasmine.createSpy("spy");
var baz = {
fn: spy
};
var quux = {
fn: spy
};
baz.fn(123);
quux.fn(456);
expect(spy.calls.first().object).toBe(baz);
expect(spy.calls.mostRecent().object).toBe(quux);
});
//.calls.reset(): 重置Spy的所有追踪数据；
it("can be reset", function() {
foo.setBar(123);
foo.setBar(456, "baz");
expect(foo.setBar.calls.any()).toBe(true);
foo.setBar.calls.reset();
expect(foo.setBar.calls.any()).toBe(false);
});
});
/*
jasmine.createSpy()
* 假如没有函数可以追踪，我们可以自己创建一个空的Spy。
* 创建后的Spy功能与其他的Spy一样：跟踪调用、参数等，但该Spy没有实际的代码实现，这种方式经常会用在对JavaScript中的对象的测试。
* */
describe("A spy, when created manually", function() {
var whatAmI;
beforeEach(function() {
whatAmI = jasmine.createSpy("whatAmI");
whatAmI("I", "am", "a", "spy");
});
it("is named, which helps in error reporting", function() {
expect(whatAmI.and.identity()).toEqual("whatAmI");
});
it("tracks that the spy was called", function() {
expect(whatAmI).toHaveBeenCalled();
});
it("tracks its number of calls", function() {
expect(whatAmI.calls.count()).toEqual(1);
});
it("tracks all the arguments of its calls", function() {
expect(whatAmI).toHaveBeenCalledWith("I", "am", "a", "spy");
});
it("allows access to the most recent call", function() {
expect(whatAmI.calls.mostRecent().args[0]).toEqual("I");
});
});
/*
jasmine.createSpyObj()
* 如果需要spy模拟多个函数调用，可以向jasmine.createSpyObj中传入一个字符串数组，它将返回一个对象，
* 你所传入的所有字符串都将对应一个属性，每个属性即为一个Spy。
* */
describe("Multiple spies, when created manually", function() {
var tape;
beforeEach(function() {
tape = jasmine.createSpyObj('tape', ['play', 'pause', 'stop', 'rewind']);
tape.play();
tape.pause();
tape.rewind(0);
});
it("creates spies for each requested function", function() {
expect(tape.play).toBeDefined();
expect(tape.pause).toBeDefined();
expect(tape.stop).toBeDefined();
expect(tape.rewind).toBeDefined();
});
it("tracks that the spies were called", function() {
expect(tape.play).toHaveBeenCalled();
expect(tape.pause).toHaveBeenCalled();
expect(tape.rewind).toHaveBeenCalled();
expect(tape.stop).not.toHaveBeenCalled();
});
it("tracks all the arguments of its calls", function() {
expect(tape.rewind).toHaveBeenCalledWith(0);
});
});
/*
* jasmine.any()
* 以构造器或者类名作为参数，Jasmine将判断期望值和真实值的构造器是否相同，若相同则返回true。
* */
describe("jasmine.any", function() {
it("matches any value", function() {
expect({}).toEqual(jasmine.any(Object));
expect(12).toEqual(jasmine.any(Number));
});
describe("when used with a spy", function() {
it("is useful for comparing arguments", function() {
var foo = jasmine.createSpy("foo");
foo(12, function() {
return true;
});
expect(foo).toHaveBeenCalledWith(jasmine.any(Number), jasmine.any(Function));
});
});
});
/*
* jasmine.anything()
* 判断只要不是null或undefined的值，若不是则返回true。
* */
describe("jasmine.anything", function() {
it("matches anything", function() {
expect(1).toEqual(jasmine.anything());
});
describe("when used with a spy", function() {
it("is useful when the argument can be ignored", function() {
var foo = jasmine.createSpy('foo');
foo(12, function() {
return false;
});
expect(foo).toHaveBeenCalledWith(12, jasmine.anything());
});
});
});
/*
* jasmine.objectContaining()
* 用来判断对象中是否存在指定的键值属性对。
* */
describe("jasmine.objectContaining", function() {
var foo;
beforeEach(function() {
foo = {
a: 1,
b: 2,
bar: "baz"
};
});
it("matches objects with the expect key/value pairs", function() {
expect(foo).toEqual(jasmine.objectContaining({
bar: "baz"
}));
expect(foo).not.toEqual(jasmine.objectContaining({
c: 37
}));
});
describe("when used with a spy", function() {
it("is useful for comparing arguments", function() {
var callback = jasmine.createSpy("callback");
callback({
bar: "baz"
});
expect(callback).toHaveBeenCalledWith(jasmine.objectContaining({
bar: "baz"
}));
expect(callback).not.toHaveBeenCalledWith(jasmine.objectContaining({
c: 37
}));
});
});
});
/*
* jasmine.arrayContaining()
* 可以用来判断数组中是否有期望的值。
* */
describe("jasmine.arrayContaining", function() {
var foo;
beforeEach(function() {
foo = [1, 2, 3, 4];
});
it("matches arrays with some of the values", function() {
expect(foo).toEqual(jasmine.arrayContaining([3, 1])); // 直接在期望值中使用jasmine.arrayContaining达到目的
expect(foo).not.toEqual(jasmine.arrayContaining([6]));
});
describe("when used with a spy", function() {
it("is useful when comparing arguments", function() {
var callback = jasmine.createSpy("callback"); // 创建一个空的Spy
callback([1, 2, 3, 4]); // 将数组内容作为参数传入Spy中
expect(callback).toHaveBeenCalledWith(jasmine.arrayContaining([4, 2, 3]));
expect(callback).not.toHaveBeenCalledWith(jasmine.arrayContaining([5, 2]));
});
});
});
/*
* jasmine.stringMatching()
* 用来模糊匹配字符串，在jasmine.stringMatching中也可以使用正则表达式进行匹配，使用起来非常灵活。
* */
describe("jasmine.stringMatching", function() {
it("matches as a regexp", function() {
expect({foo: "bar"}).toEqual({foo: jasmine.stringMatching(/^bar$/)});
expect({foo: "foobarbaz"}).toEqual({foo: jasmine.stringMatching("bar")});
});
describe("when used with a spy", function() {
it("is useful for comparing arguments", function() {
var callback = jasmine.createSpy("callback");
callback("foobarbaz");
expect(callback).toHaveBeenCalledWith(jasmine.stringMatching("bar"));
expect(callback).not.toHaveBeenCalledWith(jasmine.stringMatching(/^bar$/));
});
});
});
/*
* 不规则匹配（自定义匹配）：asymmetricMatch
* 某些场景下，我们希望能按照自己设计的规则进行匹配，此时我们可以自定义一个对象，该对象只要包含一个名为asymmetricMatch的方法即可。
* */
describe("custom asymmetry", function() {
var tester = {
asymmetricMatch: function(actual) {
var secondValue = actual.split(",")[1];
return secondValue === "bar";
}
};
it("dives in deep", function() {
expect("foo,bar,baz,quux").toEqual(tester);
});
describe("when used with a spy", function() {
it("is useful for comparing arguments", function() {
var callback = jasmine.createSpy("callback");
callback("foo,bar,baz");
expect(callback).toHaveBeenCalledWith(tester);
});
});
});
/*
* jasmine.clock()用来模拟操纵时间。
* 要想使用jasmine.clock()，先调用jasmine.clock().install告诉Jasmine你想要在spec或者suite操作时间，当你不需要使用时，务必调用jasmine.clock().uninstall来恢复时间状态。
*
* 示例中使用jasmine.clock().tick(milliseconds)来控制时间前进，本例中出现了三种时间控制方式：
* setTimeout: 定期执行一次，当jasmine.clock().tick()的时间超过了timeout设置的时间时触发
* setInterval: 定期循环执行，每当jasmine.clock().tick()的时间超过了timeout设置的时间时触发
* mockDate: 模拟一个指定日期（当不提供基准时间参数时，以当前时间为基准时间）
* */
describe("Manually ticking the Jasmine Clock", function() {
var timerCallback;
beforeEach(function() {
timerCallback = jasmine.createSpy("timerCallback");
jasmine.clock().install();
});
afterEach(function() {
jasmine.clock().uninstall();
});
it("causes a timeout to be called synchronously", function() {
setTimeout(function() {
timerCallback();
}, 100);
expect(timerCallback).not.toHaveBeenCalled();
jasmine.clock().tick(101);
expect(timerCallback).toHaveBeenCalled();
});
it("causes an interval to be called synchronously", function() {
setInterval(function() {
timerCallback();
}, 100);
expect(timerCallback).not.toHaveBeenCalled();
jasmine.clock().tick(101);
expect(timerCallback.calls.count()).toEqual(1);
jasmine.clock().tick(50);
expect(timerCallback.calls.count()).toEqual(1);
jasmine.clock().tick(50);
expect(timerCallback.calls.count()).toEqual(2);
});
describe("Mocking the Date object", function(){
it("mocks the Date object and sets it to a given time", function() {
var baseTime = new Date();
jasmine.clock().mockDate(baseTime);
jasmine.clock().tick(50);
expect(new Date().getTime()).toEqual(baseTime.getTime() + 50);
});
});
});
/*
* Jasmine可以支持spec中执行异步操作。
* 当调用beforeEach, it和afterEach时，函数可以包含一个可选参数done，当spec执行完毕之后，调用done通知Jasmine异步操作已执行完毕。
*
* 另外补充一点，如果需要设置全局的默认超时时间，可以设置jasmine.DEFAULT_TIMEOUT_INTERVAL的值，
* 当异步执行时间超过设置的执行超时时间js将会报错。
* */
describe("Asynchronous specs", function() {
var value;
beforeEach(function(done) {
setTimeout(function() {
value = 0;
done();
}, 1);
});
// 在上面beforeEach的done()被执行之前，这个测试用例不会被执行
it("should support async execution of test preparation and expectations", function(done) {
value++;
expect(value).toBeGreaterThan(0);
done(); // 执行完done()之后，该测试用例真正执行完成
});
// Jasmine异步执行超时时间默认为5秒，超过后将报错
describe("long asynchronous specs", function() {
var originalTimeout;
beforeEach(function() {
originalTimeout = jasmine.DEFAULT_TIMEOUT_INTERVAL;
// 设置全局的默认超时时间
jasmine.DEFAULT_TIMEOUT_INTERVAL = 6000;
});
it("takes a long time", function(done) {
setTimeout(function() {
done();
}, 4000);
});
// 如果要调整指定用例的默认的超时时间，可以在beforeEach，it和afterEach中传入一个时间参数
//it("takes a long time for this spec", function(done) {
// setTimeout(function() {
// done();
// }, 6000);
//}, 7000);
afterEach(function() {
jasmine.DEFAULT_TIMEOUT_INTERVAL = originalTimeout;
});
});
});
}());
Reference
http://www.cnblogs.com/wushangjue/p/4541209.html