Angular Unit Test 断言总结

Angular Unit Test 21 断言总结

// toEqual

    var arr1 = [1,2];
    var arr2 = [1,2];
    //expect(arr1).toBe(arr2); 结果false--toBe表示=== 
    expect(arr1).toEqual(arr2); //true

// toMatch(Regex or string)正则断言

    var value3 = 'I am using Angular Unit Test';
    expect(value3).toMatch(/Angular Unit/); // true
    expect(value3).toMatch('g Angular Unit T'); // true

// toBeUndefined

    var val4:any= undefined;
    var val4_2;
    var val4_3 = 10;
    expect(val4).toBeUndefined();	//true
    expect(val4_2).toBeUndefined();	//true
    expect(val4_3).not.toBeUndefined();// true

// toBeNull
// toBeTruthy : 断言boolean
// toBeFalsy : 断言boolean

// toContain(val[])

    var arr5:any[]=[1,2,3];
    expect(arr5).toContain(2,3); // true

// toBeLessThan(val)
// toBeGreaterThan(val)
// toBeCloseTo(val, fixed)

    var val6:number=26.45;
    expect(val6).toBeCloseTo(26.4, 1); // true
    //expect(val6).toBeCloseTo(26.4, 2); // false

// toThrow(fn)

    var val7:any[]=[1,2];
    expect(() => {
      return val7[8];
    }).toThrow();  // false --- 嗯？这都不抛异常？？