Update README

Author: hoodmane

Tools/wasm/README.md

@@ -84,6 +84,17 @@ make a node application that "embeds" the interpreter instead of acting like the
 CLI you will need to write your own alternative to `node_entry.mjs`.
 
 
+### Running tests
+
+After building, you can run the full test suite with:
+```shell
+./cross-build/wasm32-emscripten/build/python/python.sh -m test -uall
+```
+You can run the browser smoke test with:
+```shell
+./Tools/wasm/emscripten/browser_test/run_test.sh
+```
+
 ### The Web Example
 
 When building for Emscripten, the web example will be built automatically. It

Tools/wasm/emscripten/browser_test/.gitignore

@@ -1,4 +1,4 @@
 node_modules
 test-results
 playwright-report
-
+test_log.txt

Tools/wasm/emscripten/browser_test/run_test.sh

@@ -1,4 +1,10 @@
 #!/bin/bash
-npm ci
-npx playwright install
-CI=1 npx playwright test
+set -euo pipefail
+cd "$(dirname "$0")"
+rm -f test_log.txt
+echo "Installing node packages" | tee test_log.txt
+npm ci >> test_log.txt 2>&1
+echo "Installing playwright browsers" | tee test_log.txt
+npx playwright install 2>> test_log.txt
+echo "Running tests" | tee test_log.txt
+CI=1 npx playwright test | tee test_log.txt