Coverage report shows red highlights despite being covered in unit test.

[dashmug]

Do you want to request a feature or report a bug?

I am reporting a bug.

What is the current behavior?

I wrote unit tests for the following calculateStatus function that needs refactoring. I am very certain that most of it is covered (as can be seen by the green 1x - 36x on the left side of the report) and yet they are highlighted in red and the coverage stats seems to be incorrect.

If the current behavior is a bug, please provide the steps to reproduce and either a repl.it demo through https://repl.it/languages/jest or a minimal repository on GitHub that we can yarn install and yarn test.

Unfortunately, I cannot reproduce this. This exact function and its unit test was taken from an old project (with the same jest and typescript config and the coverage was working fine in that one). I have used --no-cache and yet the problem still persists for this particular project.

What is the expected behavior?

The lines that were covered will NOT be highlighted and will be treated as covered.

Please provide your exact Jest configuration and mention your Jest, node, yarn/npm version and operating system.

jest v20.0.4
yarn v0.27.5
typescript v2.4.2

Jest config

{
    "testEnvironment": "node",
    "collectCoverageFrom": [
      "src/**/*.ts",
      "!src/**/*.d.ts",
      "!**/__tests__/**"
    ],
    "coverageReporters": [
      "html"
    ],
    "mapCoverage": true,
    "transform": {
      "^.+\\.ts$": "<rootDir>/node_modules/ts-jest/preprocessor.js"
    },
    "testRegex": "(/__tests__/.*\\.(test|spec))\\.ts$",
    "moduleFileExtensions": [
      "ts",
      "js"
    ],
    "setupFiles": [
      "./test/console.js"
    ]
  }

[cpojer]

Unfortunately without a concrete repro we won't be able to troubleshoot this. I'm happy to reopen if you find a way to provide one.

[dashmug]

@cpojer I am currently working on a repro repo (:-)). I'll comment here when it's ready.

Quick question though: Am I right in thinking that the green xx markers mean they are covered and shouldn't be highlighted in red?

[github-actions]

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