Jest stuck - keeps spinning, no output

[jchapuis]

Environment

1. node -v: v6.10.3

2. npm -v: 3.10.10

3. npm ls react-scripts (if you haven’t ejected):
   `-- (empty)
   npm ERR! code 1

4. Operating system: Windows

Steps to Reproduce

No matter if start my project, or stop/start Jest - it keeps spinning and does nothing. One of five it suddenly works, then gets stuck again after a while.

There are some warnings in the developer console:

[GregOnNet]

Hey,

I experience the same error.
Having a look in the Output of Jest there is an error while spawning the git process.

Error: spawn git ENOENT
    at exports._errnoException (util.js:1014:11)
    at Process.ChildProcess._handle.onexit (internal/child_process.js:189:19)
    at onErrorNT (internal/child_process.js:366:16)
    at _combinedTickCallback (internal/process/next_tick.js:102:11)
    at process._tickCallback (internal/process/next_tick.js:161:9)

System

• Windows 10
• npm 5.0.3
• node v8.1.0
• VSCode 1.14.1

I would love to see the Jest integration working in my VSCode. :-)
If you need further information please contact me.

Thanks in advance
Greg

UPDATE
For me it seems that the problem is that VSCode does not resolve the path to the installed git binary.
I don't think that my problems relate to vscode-jest itself.

UPDATE 2
VSCode does not support cygwin/git which I have installed: microsoft/vscode#7998
That's why vscode-jest does not start either.

UPDATE 3
After installing Git for Windows. The error "Error: spawn git ENOENT" is gone.
Now I stuck with the same problem @jchapuis described.
Jest tries to initialize itself but unfortunately nothing happens.

1. 
2. 

[bookman25]

Have you tried running jest standalone without the plugin? This plugin doesn't talk directly to git in any way, all of that logic is handled directly by jest.

[marcionicolau]

I get this from Developer Tools
MacOS X
VSCode: 1.16.0
Jest: 21.0.2

shell.ts:419 [Orta.vscode-jest] Cannot read property 'testRegex' of undefined: TypeError: Cannot read property 'testRegex' of undefined
at JestExt.wouldJestRunURI (/Users/nicolau/.vscode/extensions/Orta.vscode-jest-2.3.0/out/src/JestExt.js:253:64)
	at JestExt.canUpdateDecorators (/Users/nicolau/.vscode/extensions/Orta.vscode-jest-2.3.0/out/src/JestExt.js:249:34)
	at JestExt.triggerUpdateDecorations (/Users/nicolau/.vscode/extensions/Orta.vscode-jest-2.3.0/out/src/JestExt.js:131:19)
	at vscode.window.onDidChangeActiveTextEditor.editor (/Users/nicolau/.vscode/extensions/Orta.vscode-jest-2.3.0/out/src/fileChangeWatchers.js:9:21)
	at e.invoke (/Applications/Visual Studio Code.app/Contents/Resources/app/out/vs/workbench/node/extensionHostProcess.js:28:55287)
	at e.fire (/Applications/Visual Studio Code.app/Contents/Resources/app/out/vs/workbench/node/extensionHostProcess.js:28:57078)
	at /Applications/Visual Studio Code.app/Contents/Resources/app/out/vs/workbench/node/extensionHostProcess.js:28:393153
	at e.invoke (/Applications/Visual Studio Code.app/Contents/Resources/app/out/vs/workbench/node/extensionHostProcess.js:28:55287)
	at e.fire (/Applications/Visual Studio Code.app/Contents/Resources/app/out/vs/workbench/node/extensionHostProcess.js:28:57078)
	at e.$acceptDocumentsAndEditorsDelta (/Applications/Visual Studio Code.app/Contents/Resources/app/out/vs/workbench/node/extensionHostProcess.js:28:351598)
	at t.e.invoke (/Applications/Visual Studio Code.app/Contents/Resources/app/out/vs/workbench/node/extensionHostProcess.js:28:423958)
	at e._invokeHandler (/Applications/Visual Studio Code.app/Contents/Resources/app/out/vs/workbench/node/extensionHostProcess.js:28:280554)
	at e._receiveOneMessage (/Applications/Visual Studio Code.app/Contents/Resources/app/out/vs/workbench/node/extensionHostProcess.js:28:280244)
	at /Applications/Visual Studio Code.app/Contents/Resources/app/out/vs/workbench/node/extensionHostProcess.js:28:279271
	at /Applications/Visual Studio Code.app/Contents/Resources/app/out/vs/workbench/node/extensionHostProcess.js:28:281190
	at /Applications/Visual Studio Code.app/Contents/Resources/app/out/vs/workbench/node/extensionHostProcess.js:28:56058
	at e.invoke (/Applications/Visual Studio Code.app/Contents/Resources/app/out/vs/workbench/node/extensionHostProcess.js:28:55287)
	at e.fire (/Applications/Visual Studio Code.app/Contents/Resources/app/out/vs/workbench/node/extensionHostProcess.js:28:57078)
	at Socket.<anonymous> (/Applications/Visual Studio Code.app/Contents/Resources/app/out/vs/workbench/node/extensionHostProcess.js:28:102495)
	at emitOne (events.js:96:13)
	at Socket.emit (events.js:191:7)
	at readableAddChunk (_stream_readable.js:178:18)
	at Socket.Readable.push (_stream_readable.js:136:10)
	at Pipe.onread (net.js:560:20)

[bookman25]

This error points to a failure to load jest settings. Any chance you have a sample repo we can clone to try to reproduce?

[dennisreimann]

I experience a similar problem, here is the output of the Developer Tools Console:

shell.ts:459 [Orta.vscode-jest] Cannot read property 'forEach' of null: TypeError: Cannot read property 'forEach' of null
	at JestExt.sortDecorationBlocks (/Users/dennisreimann/.vscode/extensions/Orta.vscode-jest-2.4.5/out/src/JestExt.js:187:19)
	at JestExt.updateDotDecorators (/Users/dennisreimann/.vscode/extensions/Orta.vscode-jest-2.4.5/out/src/JestExt.js:220:74)
	at JestExt.triggerUpdateDecorations (/Users/dennisreimann/.vscode/extensions/Orta.vscode-jest-2.4.5/out/src/JestExt.js:171:14)
	at vscode.window.onDidChangeActiveTextEditor.editor (/Users/dennisreimann/.vscode/extensions/Orta.vscode-jest-2.4.5/out/src/fileChangeWatchers.js:9:21)
	at e.invoke (/Applications/Visual Studio Code.app/Contents/Resources/app/out/vs/workbench/node/extensionHostProcess.js:4:84411)
	at e.fire (/Applications/Visual Studio Code.app/Contents/Resources/app/out/vs/workbench/node/extensionHostProcess.js:4:86133)
	at /Applications/Visual Studio Code.app/Contents/Resources/app/out/vs/workbench/node/extensionHostProcess.js:4:479691
	at e.invoke (/Applications/Visual Studio Code.app/Contents/Resources/app/out/vs/workbench/node/extensionHostProcess.js:4:84411)
	at e.fire (/Applications/Visual Studio Code.app/Contents/Resources/app/out/vs/workbench/node/extensionHostProcess.js:4:86133)
	at e.$acceptDocumentsAndEditorsDelta (/Applications/Visual Studio Code.app/Contents/Resources/app/out/vs/workbench/node/extensionHostProcess.js:4:430508)
	at t.e.invoke (/Applications/Visual Studio Code.app/Contents/Resources/app/out/vs/workbench/node/extensionHostProcess.js:4:509443)
	at e._invokeHandler (/Applications/Visual Studio Code.app/Contents/Resources/app/out/vs/workbench/node/extensionHostProcess.js:4:354786)
	at e._receiveOneMessage (/Applications/Visual Studio Code.app/Contents/Resources/app/out/vs/workbench/node/extensionHostProcess.js:4:354476)
	at /Applications/Visual Studio Code.app/Contents/Resources/app/out/vs/workbench/node/extensionHostProcess.js:4:353503
	at /Applications/Visual Studio Code.app/Contents/Resources/app/out/vs/workbench/node/extensionHostProcess.js:4:355422
	at /Applications/Visual Studio Code.app/Contents/Resources/app/out/vs/workbench/node/extensionHostProcess.js:4:85128
	at e.invoke (/Applications/Visual Studio Code.app/Contents/Resources/app/out/vs/workbench/node/extensionHostProcess.js:4:84411)
	at e.fire (/Applications/Visual Studio Code.app/Contents/Resources/app/out/vs/workbench/node/extensionHostProcess.js:4:86133)
	at Socket.<anonymous> (/Applications/Visual Studio Code.app/Contents/Resources/app/out/vs/workbench/node/extensionHostProcess.js:4:144114)
	at emitOne (events.js:96:13)
	at Socket.emit (events.js:191:7)
	at readableAddChunk (_stream_readable.js:178:18)

This happens on startup, after that the Jest extension ist stuck with "testing changes".

Jest extension version: 2.4.5
Jest and Jest CLI version: 21.2.1

jest.config.js:

module.exports = {
  'mapCoverage': true,
  'moduleFileExtensions': [
    'js',
    'vue'
  ],
  'moduleNameMapper': {
    '^@/(.*)$': '<rootDir>/src/vue/$1'
  },
  'snapshotSerializers': [
    '<rootDir>/node_modules/jest-serializer-vue'
  ],
  testMatch: [
    '**/test/unit/**/?(*.)spec.js'
  ],
  'transform': {
    '^.+\\.js$': '<rootDir>/node_modules/babel-jest',
    '.*\\.(vue)$': '<rootDir>/node_modules/vue-jest'
  }
}

[seanpoulter]

Thanks for sharing your problem @dennisreimann. Looking through sortDecorationBlocks and updateDotDecorators it looks like assertions was likely null. This was recently fixed by @BBB in #169 but it hasn't been published yet.

[seanpoulter]

@dennisreimann, the fix has been published.
Closing since we seem to have resolved these.

[dennisreimann]

I can confirm that the error message in the VS Code dev console is gone now. Nevertheless the extension is still stuck with "testing changes". There is no more error output I can send to debug, the Jest console is empty as well.

Any way I can provide more feedback/debugging info? Thanks!

[BenAychh]

Probably related to jestjs/jest#4419, try creating a git repo inside or waiting until the fix is released. At least this fixed it for me.

[seanpoulter]

I missed your reply, sorry @dennisreimann.

Is the project set up in a git or hg repo?
Can you reproduce it with a small repo we can clone?
Are you willing to try debugging the extension with our help?

[dennisreimann]

@seanpoulter unfortunately this isn't a public project.

Are you willing to try debugging the extension with our help?

Of course – is this something we can have a quick look at together in a screensharing session? Otherwise I will try to come up with a similar setup in a separate repo you can reproduce the problem with.