Expected =1, received=0 - 为什么我的函数没有在 Angular 测试中调用？

Question

我检查控制台 .. shownCategories 不为空，但在测试中为空我正在尝试检查 FilterShownCategories() 是否被调用但其输出 received=0, expected=1

it("in case edit should call filterCategories()", () => {
         component.state == 'edit';
         if (component.state == 'edit') {
           const filterCategoriesSpy = spyOn(component, 'filterCategories').and.returnValue(
             [{
               hiddenVariants: 0,
               id: 187910,
               lang: "de",
               name: "AMG/Exterieur",
               plId: 5389,
               refId: "1015001000",
               type: "AMG",
               visibleVariants: 5
             }, {
               hiddenVariants: 0,
               id: 187911,
               lang: "de",
               name: "AMG/Interieur",
               plId: 5389,
               refId: "1015002000",
               type: "AMG",
               visibleVariants: 7,
             }]);
           expect(filterCategoriesSpy).toHaveBeenCalledTimes(1);
         }
       });
     }}

这是函数 :

  public addFirstTable() {
    console.log("addFirstTable");
    //awel mara showncategories gaya fadya a lazm amlaha lw state msh edit
    if (this.state != "compare") {
      // this.shownCategories = this.allCategories.map(a => ({ ...a }));
      this.shownCatgeories = this.FilterShownCategories();
      console.log("shownCategories if state is not compare", this.shownCategories);
    }
}

输出：

expected=1, received=0

Answer 1

我想你忘了执行测试函数。

添加下行

component.addFirstTable();

在此之前

expect(filterCategoriesSpy).toHaveBeenCalledTimes(1);

Expected =1, received=0 - 为什么我的函数没有在 Angular 测试中调用？

Expected =1, received=0 - why is my function not called in Angular test?

unit-testing

jasmine

jestjs

angular