TypeError：studentsList.forEach不是函数。茉莉花单元测试（角2）

Question

如何使用业力测试茉莉花forEach循环？ 分量代码如下： - 在studentsList

getData(studentsList:any, day:any, game:any){ 
let strength:any; 
let location:string; 
    if(studentsList){ 
    studentsList.forEach(value => { 
    strength=value.schedule[day][game].strength; 
    location=value.schedule[day][game].location; 
}); 
} 
} 

数据本是： -

（编辑： - 所述数据被更新它看起来像这样）

[{ 
     "activityName": "tournament1", 
     "schedule": { 
      "first": { 
       "Baseball": { 
        "strength": 23, 
        "location": "abc" 
       } 
      }, 
      "second": { 
       "Cricket": { 
        "strength": 20, 
        "location": "bcd" 
       } 
      }, 
      "third": { 
       "Football": { 
        "strength": 19, 
        "location": "cde" 
       } 
      } 
     } 
    }, 
{ 
     "activityName": "tournament2", 
     "schedule": { 
      "first": { 
       "Baseball": { 
        "strength": 23, 
        "location": "abc" 
       } 
      }, 
      "second": { 
       "Cricket": { 
        "strength": 20, 
        "location": "bcd" 
       } 
      }, 
      "third": { 
       "Football": { 
        "strength": 19, 
        "location": "cde" 
       } 
      } 
     } 
    },{ 
     "activityName": "tournament3", 
     "schedule": { 
      "first": { 
       "Baseball": { 
        "strength": 23, 
        "location": "abc" 
       } 
      }, 
      "second": { 
       "Cricket": { 
        "strength": 20, 
        "location": "bcd" 
       } 
      }, 
      "third": { 
       "Football": { 
        "strength": 19, 
        "location": "cde" 
       } 
      } 
     } 
    }] 

这是我试过的测试： -

it('should check getData()',() => { 
     fixture = TestBed.createComponent(GameComponent); 
     const app = fixture.debugElement.componentInstance; 
     const data={ 
    "activityName": "tournament", 
    "schedule": { 
     "first": { 
      "Baseball": { 
       "strength": 23, 
       "location": "abc" 
      } 
     }, 
     "second": { 
      "Cricket": { 
       "strength": 20, 
       "location": "bcd" 
      } 
     }, 
     "third": { 
      "Football": { 
       "strength": 19, 
       "location": "cde" 
      } 
     } 
    } 
} 

app.getData(data, 'first', 'Baseball'); 
fixture.detectChanges(); 
expect(app.location).toContain('abc'); 
expect(app.location).toContain('bcd'); 
expect(app.location).toContain('cde'); 
} 

但我一直在为这个forEach不是一个函数。我应该采取其他方式来替代测试中的静态数据？

Answer 1

studentsList是一个对象，但forEach只存在于数组上。如果这是你想要做的事情，你可以使用for (var key in studentsList)迭代对象的键。