在我的React-app中为所有提交的文件生成Jest覆盖报告时遇到困难。
最初，代码覆盖率按预期生成，但是在我的环境中发生了一些变化，现在只有自上次提交以来更改的文件才显示覆盖率。
我看到有很多关于这个问题的帖子，但我自己无法解决。
package.json:

{...
    "devDependencies": {
        "@testing-library/jest-dom": "^5.11.9",
        "@testing-library/react": "^11.2.5",
        "@testing-library/user-event": "^12.6.3",
        "react-test-renderer": "^17.0.1"
    },
    "jest": {
        "testMatch": [ "**/tests/**/*.[jt]s?(x)", "**/?(*.)+(spec|test).[jt]s?(x)" ],
        "coverageReporters": ["json","html","lcov", "text"]
    }
...}

字符串
项目结构：

|
+--node_modules
+--src
    |
    + __tests__
    + App.js
- package.json

型
运行命令npm test -- --coverage会产生以下输出：

No tests found related to files changed since last commit.
Press `a` to run all tests, or run Jest with `--watchAll`.
----------|---------|----------|---------|---------|-------------------
File      | % Stmts | % Branch | % Funcs | % Lines | Uncovered Line #s 
----------|---------|----------|---------|---------|-------------------
All files |       0 |        0 |       0 |       0 |                   
----------|---------|----------|---------|---------|-------------------

Watch Usage
 › Press a to run all tests.
 › Press f to run only failed tests.
 › Press q to quit watch mode.
 › Press p to filter by a filename regex pattern.
 › Press t to filter by a test name regex pattern.
 › Press Enter to trigger a test run.

型