简介
Jasmine是一款针对javaScript代码的单元测试框架。它不依赖于其他框架；不依赖于DOM; BDD式语法，方便书写测试代码。
第一个简单的测试：
describe("A suite", function() {
it("contains spec with an expectation", function() {
expect(true).toBe(true);
});
});
Unit、Jasmine基本概念对应关系
- 测试套件Suites: describe
- 测试用例 TestCase：it
- 测试断言 Assert：expect
- Setup: beforeEach
- teardown: afterEach
匹配函数: to*(arg)**
- 内置匹配函数:
- toBe()
- toBeDefined()
- toBeUndefined()
- toBeNull()
- toBeTruthy()
- toBeFalsy()
- toEqual()
- toBeLessThan()
- toBeGreaterThan()
- toContain()
- toBeCloseTo()
- toHaveBeenCalled()
- toHaveBeenCalledWith()
- toMatch()
- 自定义匹配函数
- 示例：http://jasmine.github.io/2.0/custom_matcher.html
跳过和挂起测试
- disable suites ：xdescribe
- disable testCase：xit
- Xdescribe 和xit的测试，运行期间将被skip,它们也不会被显示在运行结果中。
- Pending specs: pending()
- Pending 的spec 不会运行，但是测试名会在运行结果中显示为pending
- Pending specs
- can be declared ‘xit’
- can be declared with ‘it’ but without a function
- can be declared by calling ‘pending’ in the spec body
- Spies
- Spy函数具有双重功能：做为测试的stub和跟踪函数的调用
- and.callThrough
- and.returnValue
- and.callFake
- and.throwError
- and.stub
- calls.any()
- calls.count()
- calls.argsFor(index):
- calls.all():
- calls.mostRecent():
- calls.first()
Mock Timeout
- Install function: jasmine.clock().install();
- clock is ticked forward: jasmine.clock().tick(milliseconds)
- Asynchronous Support
- Calls to beforeEach, it, and afterEach can take an optional single argument that should be called when the async work is complete.
- This spec will not start until the done function is called in the call to beforeEach above. And this spec will not complete until its done is called.
- Jasmine默认异步调用超时为5S，可以通过设置jasmine.DEFAULT_TIMEOUT_INTERVAL为自定义超时时间。
describe("Asynchronous specs", function() {
var value;
beforeEach(function(done) {
setTimeout(function() {
value = 0;
done();
}, 1);
});
it("should support async execution of test preparation and expectations", function(done) {
value++;
expect(value).toBeGreaterThan(0);
done();
});
info
- http://jasmine.github.io/2.0/introduction.html