add instructions to run tests locally for DOM & JS

dom/README.md

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+# DOM
+
+Tests that use puppeteer to do browser side exercises
+
+## Run test locally
+
+### Installation
+
+> You need node version 14+
+
+```bash
+# Clone the repo
+git clone https://github.com/01-edu/public.git
+
+# go into the dom directory
+cd public/dom
+
+# install puppeteer
+npm i puppeteer
+```
+
+### Executing a test
+
+```bash
+# run a test
+SOLUTION_PATH=/user/you/piscine-repo node test.js exercise-name
+```
+
+The `SOLUTION_PATH` is the directory where the test should look
+for your solution, usualy your piscine repository.
+
+The `exercise-name` argument should match exactly the name of an
+exercise, not including `.js`

js/README.md

@@ -0,0 +1,31 @@
+# JS
+
+Tests that use node to do JavaScript exercises
+
+## Run test locally
+
+### Installation
+
+> You need node version 14+
+
+```bash
+# Clone the repo
+git clone https://github.com/01-edu/public.git
+
+# go into the dom directory
+cd public/js/tests
+```
+
+### Executing a test
+
+```bash
+# run a test
+node test.mjs /user/you/piscine-repo exercise-name
+```
+
+The first argument `/user/you/piscine-repo` is the directory
+where the test should look for your solution,
+usualy your piscine repository.
+
+The second argument `exercise-name` should match exactly
+the name of an exercise, not including `.js`