Silent coverage output in terminal

[otakustay]

Hi, I want vitest to output test results in json, so I use --reporter=json, however with --coverage.enabled --coverage.clean --coverage.reporter=json flags, vitest adds a line " % Coverage report from v8" after json output.

I'd like to see coverage written to coverage/coverage-final.json without any output in terminal, is there any flags I'm missing?

[AriPerkkio]

Currently that message is logged always when coverage is enabled. It doesn't really make sense to log it if text or text-summary reporters are not used.

[otakustay]

This prevents us to simple JSON.parse(stdout), so I'd prefer not logging this line when no text report is enabled for coverage

[AriPerkkio]

This prevents us to simple JSON.parse(stdout)

Why would you try to parse stdout as JSON? It contains all kinds of text and not just the coverage logging.

Use --coverage.reporter=json and read the generated coverage/coverage-final.json instead.

[AriPerkkio]

There's now a PR for this: #4027

[otakustay]

I need the test result (from --report=json) as well as a coverage report (from --coverage.reporter=json).

The test result looks like this and seems I can only get it from terminal stdout:

{
  "numTotalTestSuites": 2,
  "numPassedTestSuites": 2,
  "numFailedTestSuites": 0,
  "numPendingTestSuites": 0,
  "numTotalTests": 5,
  "numPassedTests": 5,
  "numFailedTests": 0,
  "numPendingTests": 0,
  "numTodoTests": 0,
  "startTime": 1693041503488,
  "success": true,
  "testResults": [ /* ... */ ]
}

[AriPerkkio]

The test result looks like this and seems I can only get it from terminal stdout:

--outputFile=test-results.json should do that.

https://vitest.dev/config/#outputfile

[otakustay]

Oh thanks, I can read json from file now