diff --git a/CODING.md b/CODING.md
index ff5eee4dc1..5c1ef0844d 100644
--- a/CODING.md
+++ b/CODING.md
@@ -48,13 +48,14 @@ Or you can download it manually, and then:
 * then use the env var `CHROME` to tell itowns/mocha/puppeteer what Chrome app
   it should use: `CHROME=/opt/google/chrome-beta/chrome npm run test-examples`
 
-Then tests can be ran with four differents methods:
-* `npm run test`: build and ran all tests in iTowns
-* `npm run test-unit`: ran unit tests only
-* `npm run test-functional`: ran functional testing with examples only, use
+Then tests can be run with five differents methods:
+* `npm run test`: build and run all tests in iTowns (the one used by github action)
+* `npm run test-dev`: build in development mode and run all tests in iTowns (to get more messages)
+* `npm run test-unit`: run unit tests only
+* `npm run test-functional`: run functional testing with examples only, use
   `npx mocha -t 30000 test/functional/bootstrap.js
   test/functional/<test_case>.js` to run a single example
-* `npm run test-with-coverage`: build and ran all tests in iTowns and generate a
+* `npm run test-with-coverage`: build and run all tests in iTowns and generate a
   report on the coverage of the tests
 
 
diff --git a/package.json b/package.json
index 019996bb61..3c78377365 100644
--- a/package.json
+++ b/package.json
@@ -12,6 +12,7 @@
     "doc": "jsdoc --readme docs/HOMEPAGE.md -c docs/config.json",
     "doclint": "npm run doc -- -t templates/silent",
     "test": "npm run lint -- --max-warnings=0 && npm run build && npm run test-with-coverage && npm run test-functional",
+    "test-dev": "npm run lint -- --max-warnings=0 && npm run build-dev && npm run test-with-coverage && npm run test-functional",
     "test-unit": "npm run base-test-unit test/unit",
     "test-functional": "mocha -t 60000 --require test/hooks_functional.js --recursive test/functional",
     "test-with-coverage": "nyc -n src -r html cross-env npm run test-unit",