if-else路径未在角度istanbul代码覆盖率报告中导入

Question

import { Component, OnInit } from '@angular/core';
import { Title } from '@angular/platform-browser';

@Com(I)ponent({
  selector: 'app-fruit-cake',(E)
  templateUrl: './fruit-cake.component.html',
  styleUrls: ['./fruit-cake.component.scss'],
})
expo(E)rt class FruitCakeComponent {
  constructor(private _title: Title) {
    _title.setTitle('Cake');
  }
}

我的代码覆盖率报告显示(E):其他路径未被采用.(I):如果没有采取路径.在import语句和装饰器的上下文中它意味着什么？由于这个原因,我的任何测试中的代码覆盖率都未达到100%.我该如何纠正呢？

Answer 1

对于角6,看来你需要"sourceMap": true给你的test是这样的:

    "test": {
      "builder": "@angular-devkit/build-angular:karma",
      "options": {
        "main": "test/test.ts",
        "karmaConfig": "./karma.conf.js",
        "sourceMap": true,
        "polyfills": "src/polyfills.ts",
        "tsConfig": "test/tsconfig.spec.json",
        "scripts": [],
        "styles": [],
        "assets": [
          "src/assets"
        ],
        "codeCoverageExclude": []
      }

Answer 2

我必须删除：

--sourceMap=false

以前，我已添加此功能来帮助诊断其他问题。所以我在package.json中的测试脚本看起来像这样：

"test": "ng test --code-coverage --sourceMap=false"

我将其更改为：

"test": "ng test --code-coverage"

然后，我所有的代码覆盖率都开始正确报告。您可能还需要在package.json中验证devDependencies。我正在使用Angular 6，所以它们看起来像这样：

  "devDependencies": {
    "@angular/compiler-cli": "^6.0.3",
    "@angular-devkit/build-angular": "~0.6.8",
    "typescript": "~2.7.2",
    "@angular/cli": "~6.0.8",
    "@angular/language-service": "^6.0.3",
    "@types/jasmine": "~2.8.6",
    "@types/jasminewd2": "~2.0.3",
    "@types/node": "~8.9.4",
    "codelyzer": "~4.2.1",
    "jasmine-core": "~2.99.1",
    "jasmine-spec-reporter": "~4.2.1",
    "karma": "~1.7.1",
    "karma-chrome-launcher": "~2.2.0",
    "karma-coverage-istanbul-reporter": "~2.0.0",
    "karma-jasmine": "~1.1.1",
    "karma-jasmine-html-reporter": "^0.2.2",
    "protractor": "~5.3.0",
    "ts-node": "~5.0.1",
    "tslint": "~5.9.1"
  }