Jest: Inconsistent coverage report if using jest config.json from sub directory

[matthieudesprez]

I don't get the same coverage report depending of the location of my jest config.json.

I made a repository to reproduce the issue https://github.com/Edistra/jest_coverage_report_issue

I've just written a simple function file and its associated test in src folder.

My jest.config.json, at the root of my project, looks like

{
  "roots": [
    "src",
    "node_modules"
  ],
  "collectCoverage": true,
  "collectCoverageFrom": [
    "src/**.js"
  ]
}

I've got another one in a config folder with the appropriate paths

{
  "roots": [
    "../src",
    "../node_modules"
  ],
  "collectCoverage": true,
  "collectCoverageFrom": [
    "../src/**.js"
  ]
}

My npm scripts are simple

  "scripts": {
    "test": "jest --config jest.config.json",
    "test-issue": "jest --config config/jest.config.json"
  }

The first one generates a correct report

The second one seems to consider that my function is not covered

[SimenB]

This diff fixes it:

diff --git i/config/jest.config.json w/config/jest.config.json
index 7c9d500..6570050 100644
--- i/config/jest.config.json
+++ w/config/jest.config.json
@@ -1,10 +1,11 @@
 {
+  "rootDir": "../",
   "roots": [
-    "../src",
-    "../node_modules"
+    "src",
+    "node_modules"
   ],
   "collectCoverage": true,
   "collectCoverageFrom": [
-    "../src/**.js"
+    "src/**.js"
   ]
 }

[SimenB]

Would probably be fixed by https://github.com/facebook/jest/pull/4587

[eddiemonge]

That diff sort of fixes it but then you have to put <rootDir>/config/ everywhere in it instead of just<rootDir>/