Javascript测试框架Jasmine（二）：Matchers

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  1. describe("Jasmine内置Matcher示例：", function() {
  2.  
  3.     it("toBe Matcher用来执行 === 对比", function() {
  4.         var a = 12;
  5.         var b = a;
  6.  
  7.         expect(a).toBe(b);
  8.         expect(a).not.toBe(null);
  9.     });
  10.  
  11.     describe("toEqual判断两个对象是否相等：", function() {
  12.  
  13.         it("对比简单的值类型的变量", function() {
  14.             var a = 12;
  15.             expect(a).toEqual(12);
  16.         });
  17.  
  18.         it("对比对象", function() {
  19.             var foo = {
  20.                 a: 12,
  21.                 b: 34
  22.             };
  23.             var bar = {
  24.                 a: 12,
  25.                 b: 34
  26.             };
  27.             expect(foo).toEqual(bar);
  28.         });
  29.     });
  30.  
  31.     it("toMatch用来进行正则匹配", function() {
  32.         var message = "foo bar baz";
  33.  
  34.         expect(message).toMatch(/bar/);
  35.         expect(message).toMatch("bar");
  36.         expect(message).not.toMatch(/quux/);
  37.     });
  38.  
  39.     it("toBeDefined判断是否非undefined", function() {
  40.         var a = {
  41.             foo: "foo"
  42.         };
  43.  
  44.         expect(a.foo).toBeDefined();
  45.         expect(a.bar).not.toBeDefined();
  46.     });
  47.  
  48.     it("toBeUndefined判断是否是undefined", function() {
  49.         var a = {
  50.             foo: "foo"
  51.         };
  52.  
  53.         expect(a.foo).not.toBeUndefined();
  54.         expect(a.bar).toBeUndefined();
  55.     });
  56.  
  57.     it("toBeNull用来判断是否为null", function() {
  58.         var a = null;
  59.         var foo = "foo";
  60.  
  61.         expect(null).toBeNull();
  62.         expect(a).toBeNull();
  63.         expect(foo).not.toBeNull();
  64.     });
  65.  
  66.     it("toBeTruthy执行布尔测试，判断值是否是，或者可以转换为true", function() {
  67.         var a, foo = "foo";
  68.  
  69.         expect(foo).toBeTruthy();
  70.         expect(a).not.toBeTruthy();
  71.     });
  72.  
  73.     it("toBeFalsy和toBeTruthy相反", function() {
  74.         var a, foo = "foo";
  75.  
  76.         expect(a).toBeFalsy();
  77.         expect(foo).not.toBeFalsy();
  78.     });
  79.  
  80.     it("toContain判断一个数组是否包含某个值", function() {
  81.         var a = ["foo", "bar", "baz"];
  82.  
  83.         expect(a).toContain("bar");
  84.         expect(a).not.toContain("quux");
  85.     });
  86.  
  87.     it("toBeLessThan执行数字大小比较", function() {
  88.         var pi = 3.1415926,
  89.                 e = 2.78;
  90.  
  91.         expect(e).toBeLessThan(pi);
  92.         expect(pi).not.toBeLessThan(e);
  93.     });
  94.  
  95.     it("toBeGreaterThan和toBeLessThan相反", function() {
  96.         var pi = 3.1415926,
  97.             e = 2.78;
  98.  
  99.         expect(pi).toBeGreaterThan(e);
  100.         expect(e).not.toBeGreaterThan(pi);
  101.     });
  102.  
  103.     it("toBeCloseTo示例", function() {
  104.         var pi = 3.1415926,
  105.             e = 2.78;
  106.  
  107.         expect(pi).not.toBeCloseTo(e, 2);
  108.         expect(pi).toBeCloseTo(e, 0);
  109.     });
  110.  
  111.     it("toThrow判断一个函数是否有抛出异常", function() {
  112.         var foo = function() {
  113.             return 1 + 2;
  114.         };
  115.         var bar = function() {
  116.             return a + 1;
  117.         };
  118.  
  119.         expect(foo).not.toThrow();
  120.         expect(bar).toThrow();
  121.     });
  122. });
Ran 0 of 14 specs - run all0 specs, 0 failures