如何使用自定义 environment.test.ts 设置运行 Angular 7 单元测试？

Question

如何让 Angular CLI 在 Angular 7 中提供正确的环境/环境*.ts 文件？

我试过在三个不同的地方配置environment.tswith的替换，但environment.test.ts没有成功。

我试过用ng test和运行它ng test --configuration test。

每次，如果我调试测试，我都会发现它使用environment.prod.ts(?!) 而不是environment.test.ts.

这是一个屏幕截图，显示了我尝试过的三个地方fileReplacements： 这是整个配置供参考：

{
  "$schema": "./node_modules/@angular/cli/lib/config/schema.json",
  "version": 1,
  "newProjectRoot": "projects",
  "projects": {
    "mms": {
      "root": "",
      "sourceRoot": "src",
      "projectType": "application",
      "prefix": "mms",
      "schematics": {},
      "architect": {
        "build": {
          "builder": "@angular-devkit/build-angular:browser",
          "options": {
            "outputPath": "dist/mms",
            "index": "src/index.html",
            "main": "src/main.ts",
            "polyfills": "src/polyfills.ts",
            "tsConfig": "src/tsconfig.app.json",
            "assets": [
              "src/favicon.ico",
              "src/assets",
              "src/web.config"
            ],
            "styles": [
              "src/styles.scss",
              "src/assets/libs/pikaday/pikaday.scss",
              "src/assets/scss/dragula/dragula.css",
              "src/assets/libs/hopscotch/css/hopscotch.css",
              "src/assets/scss/site.scss"
            ],
            "scripts": [
              "src/assets/libs/hopscotch/js/hopscotch.js",
              "src/assets/libs/pikaday/pikaday.js",
              "src/assets/libs/bitmovin-loader.js"
            ]
          },
          "configurations": {
            "test": {
              "fileReplacements": [{
                "replace": "src/environments/environment.ts",
                "with": "src/environments/environment.test.ts"
              }]
            },
            "production": {
              "fileReplacements": [
                {
                  "replace": "src/environments/environment.ts",
                  "with": "src/environments/environment.prod.ts"
                },
                {
                  "replace": "src/index.html",
                  "with": "src/index.prod.html"
                }
              ],
              "optimization": true,
              "outputHashing": "all",
              "sourceMap": false,
              "extractCss": true,
              "namedChunks": false,
              "aot": true,
              "extractLicenses": true,
              "vendorChunk": false,
              "buildOptimizer": true
            },
            "mastermock": {
              "main": "src/main-mock.ts",
              "fileReplacements": [{
                "replace": "src/environments/environment.ts",
                "with": "src/environments/environment.mock.ts"
              }]
            }
          }
        },
        "serve": {
          "builder": "@angular-devkit/build-angular:dev-server",
          "options": {
            "browserTarget": "mms:build",
            "proxyConfig": "proxy.conf.json"
          },
          "configurations": {
            "production": {
              "browserTarget": "mms:build:production"
            },
            "mastermock": {
              "browserTarget": "mms:build:mastermock",
              "proxyConfig": "proxy.conf.json"
            }
          }
        },
        "serve-local": {
          "builder": "@angular-devkit/build-angular:dev-server",
          "options": {
            "browserTarget": "mms:build",
            "proxyConfig": "proxy.local.conf.json"
          }
        },
        "extract-i18n": {
          "builder": "@angular-devkit/build-angular:extract-i18n",
          "options": {
            "browserTarget": "mms:build"
          }
        },
        "test": {
          "builder": "@angular-devkit/build-angular:karma",
          "options": {
            "main": "src/test.ts",
            "polyfills": "src/polyfills.ts",
            "tsConfig": "src/tsconfig.spec.json",
            "karmaConfig": "src/karma.conf.js",
            "styles": [
              "src/styles.scss"
            ],
            "scripts": [],
            "assets": [
              "src/favicon.ico",
              "src/assets",
              "src/web.config"
            ],
            "codeCoverageExclude": [
              "**/*.mock.ts",
              "**/*.module.ts"
            ],
            "fileReplacements": [{
              "replace": "src/environments/environment.ts",
              "with": "src/environments/environment.test.ts"
            }]
          },
          "configurations": {
            "test": {
              "fileReplacements": [{
                "replace": "src/environments/environment.ts",
                "with": "src/environments/environment.test.ts"
              }]
            },
            "production": {
              "karmaConfig": "src/karma.conf.prod.js"
            }
          }
        },
        "lint": {
          "builder": "@angular-devkit/build-angular:tslint",
          "options": {
            "tsConfig": [
              "src/tsconfig.app.json",
              "src/tsconfig.spec.json"
            ],
            "exclude": [
              "**/node_modules/**",
              "**/*.dev.ts",
              "**/e2e/**"
            ]
          }
        }
      }
    },
    "mms-e2e": {
      "root": "e2e/",
      "projectType": "application",
      "architect": {
        "e2e": {
          "builder": "@angular-devkit/build-angular:protractor",
          "options": {
            "protractorConfig": "e2e/protractor.conf.dev.js",
            "devServerTarget": "mms:serve"
          },
          "configurations": {
            "local": {
              "protractorConfig": "e2e/protractor.conf.dev.js",
              "devServerTarget": "mms:serve-local"
            }
          }
        },
        "lint": {
          "builder": "@angular-devkit/build-angular:tslint",
          "options": {
            "tsConfig": "e2e/tsconfig.e2e.json",
            "exclude": [
              "**/node_modules/**"
            ]
          }
        }
      }
    }
  },
  "defaultProject": "mms",
  "schematics": {
    "@ngrx/schematics:component": {
      "styleext": "scss"
    }
  },
  "cli": {
    "defaultCollection": "@ngrx/schematics"
  }
}

Answer 1

1. 这是由 Visual Studio Code 通过导入“帮助”我引起的： import { environment } from '@environments/environment.prod';
2. 的正确位置fileReplacements是在architect.test.options.fileReplacements.
3. 为了防止 VSCode 再次像这样“帮助”我，我将重命名所有environment.*.ts文件，而不是environment.ts像DO-NOT-IMPORT.ENVIRONMENT.*.ts. 至少，如果我输入错误，那会冲我大喊大叫。