Add selenium test to travis

.travis.yml

@@ -115,6 +115,26 @@ matrix:
         - TRAVIS_RUST_VERSION=nightly
         - REGULAR_TEST=false
         - CODE_COVERAGE=true
+    - name: test WASM
+      language: python
+      python: 3.6
+      cache:
+        pip: true
+        # Because we're using the Python Travis environment, we can't use
+        # the built-in cargo cacher
+        directories:
+          - /home/travis/.cargo
+          - target
+      addons:
+        firefox: latest
+      install:
+        - nvm install node
+        - pip install pipenv
+      script:
+        - wasm/tests/.travis-runner.sh
+      env:
+        - REGULAR_TEST=true
+        - TRAVIS_RUST_VERSION=stable
   allow_failures:
     - rust: nightly
       env: REGULAR_TEST=true

wasm/demo/package.json

@@ -16,12 +16,15 @@
         "raw-loader": "^1.0.0",
         "webpack": "^4.16.3",
         "webpack-cli": "^3.1.0",
-        "webpack-dev-server": "^3.1.5"
+        "webpack-dev-server": "^3.1.5",
+        "start-server-and-test": "^1.7.11"
     },
     "scripts": {
         "dev": "webpack-dev-server -d",
         "build": "webpack",
-        "dist": "webpack --mode production"
+        "dist": "webpack --mode production",
+        "test": "cd ../tests; pipenv run pytest",
+        "ci": "start-server-and-test dev http-get://localhost:8080 test"
     },
     "repository": {
         "type": "git",

wasm/tests/.travis-runner.sh

@@ -0,0 +1,23 @@
+#!/bin/sh -eux
+# This script is intended to be run in Travis from the root of the repository
+
+# Install Rust
+curl -sSf https://build.travis-ci.org/files/rustup-init.sh | sh -s -- --default-toolchain=$TRAVIS_RUST_VERSION -y
+export PATH=$HOME/.cargo/bin:$PATH
+
+# install wasm-pack
+if [ ! -f $HOME/.cargo/bin/wasm-pack ]; then
+    curl https://rustwasm.github.io/wasm-pack/installer/init.sh -sSf | sh
+fi
+
+# install geckodriver
+wget https://github.com/mozilla/geckodriver/releases/download/v0.24.0/geckodriver-v0.24.0-linux32.tar.gz
+mkdir geckodriver
+tar -xzf geckodriver-v0.24.0-linux32.tar.gz -C geckodriver
+export PATH=$PATH:$PWD/geckodriver
+
+# Install pipenv
+pip install pipenv
+(cd wasm/tests; pipenv install)
+
+(cd wasm/demo; npm install; npm run ci)

wasm/tests/test_demo.py

@@ -1,7 +1,7 @@
 import time
 
 from selenium import webdriver
-from selenium.webdriver.chrome.options import Options
+from selenium.webdriver.firefox.options import Options
 import pytest
 
 RUN_CODE_TEMPLATE = """
@@ -19,15 +19,13 @@ return output;
 @pytest.fixture(scope="module")
 def driver(request):
 	options = Options()
-	options.headless = True
-	options.add_argument('--disable-gpu')
-	driver = webdriver.Chrome(options=options)
+	options.add_argument('-headless')
+	driver = webdriver.Firefox(options=options)
 	driver.get("http://localhost:8080")
-	assert "RustPython" in driver.title
 	time.sleep(5)
 	yield driver
-	driver.close()	
-    
+	driver.close()
+
 
 @pytest.mark.parametrize("script, output",
 	[