出于某种原因，通过Visual Studio代码运行jest会返回类似于以下内容的内容：
running command> jest --no-cache
No tests found
In c:\Users\gusta\Documents\ts
992 files checked.
testMatch: **/__tests__/**/*.js?(x),**/?(*.)(spec|test).js?(x) - 121 matches
testPathIgnorePatterns: \\node_modules\\ - 7 matches
Pattern: "" - 0 matches
但是，从命令行运行测试时，它可以很好地解决测试问题。
C:\Users\gusta\Documents\ts>jest --no-cache
PASS src\__test__\some-component.test.jsx (6.812s)
尝试在VSCode中进行调试时，以及运行任务时都会发生这种情况。我的tasks.json看起来像这样：
{
"version": "0.1.0",
"tasks": [
{
"taskName": "jest",
"command": "jest",
"args": [
"--no-cache"
],
"isShellCommand": true,
"echoCommand": true,
"showOutput": "always"
}
]
}
我的package.json：
{
"name": "badgeexplorerts",
"version": "0.0.1",
"private": true,
"scripts": {
"start": "node node_modules/react-native/local-cli/cli.js start",
"android": "yarn run haul start -- --platform android",
"test": "jest"
},
"dependencies": {
"@types/jest": "^19.2.3",
"react": "~15.4.1",
"react-native": "0.42.3",
"ts-loader": "^2.0.3",
"typescript": "^2.2.2"
},
"devDependencies": {
"@types/react": "^15.0.24",
"@types/react-native": "^0.43.12",
"babel-jest": "^20.0.0",
"babel-loader": "^7.0.0",
"babel-preset-es2015": "^6.24.1",
"haul-cli": "^0.5.0",
"jest": "^20.0.0",
"react-test-renderer": "~15.4.1",
"ts-jest": "^20.0.2"
},
"jest": {
"preset": "react-native"
}
}
有谁知道发生了什么事？我的VSCode版本是1.12.1
答案 0 :(得分：0)
好的，事实证明如果你将“版本”改为2.0.0就可以了。 我无法解释，但是一个有效的task.json看起来像这样：
{
"version": "2.0.0",
"tasks": [
{
"taskName": "jest",
"command": "jest",
"args": [
"--no-cache"
],
"isShellCommand": true,
"echoCommand": true,
"showOutput": "always"
}
]
}
我遇到了与节点调试配置相同的问题，其中设置了
"console": "integratedTerminal"
在launch.json内部使它工作。我无法解释，但它对我有用。