测试报告会自动追加到页尾，这个是异步测试，要等5s

describe("Jasmine 异步测试演示", 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();
    });
 
    describe("5秒钟", function() {
        var originalTimeout;
        beforeEach(function() {
            originalTimeout = jasmine.DEFAULT_TIMEOUT_INTERVAL;
            jasmine.DEFAULT_TIMEOUT_INTERVAL = 6000;
        });
 
        it("takes a long time", function(done) {
            setTimeout(function() {
                done();
            }, 5000);
        });
 
        afterEach(function() {
            jasmine.DEFAULT_TIMEOUT_INTERVAL = originalTimeout;
        });
    });
});