Add GUI action

.github/workflows/gui.yml

@@ -0,0 +1,40 @@
+name: Test the GUI
+on:
+  push:
+    branches:
+    - main
+  pull_request:
+    branches:
+    - main
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    steps:
+    - name: Use Node.js
+      uses: actions/setup-node@v4
+      with:
+        node-version: '20.x'
+    - uses: actions/checkout@v4
+    - name: Install Chrome
+      run: |
+        wget -q -O - https://dl-ssl.google.com/linux/linux_signing_key.pub | sudo apt-key add - 
+        sudo sh -c 'echo "deb [arch=amd64] http://dl.google.com/linux/chrome/deb/ stable main" >> /etc/apt/sources.list.d/google.list'
+        sudo apt-get update
+        sudo apt-get --only-upgrade install google-chrome-stable
+        google-chrome --version
+    - name: Start dependencies
+      run: docker-compose -f docker-compose.yml up -d
+    - name: Start the server
+      run: |
+        npm install --prefix server
+        node server/app.js &
+    - name: Start the testrunner
+      run: |
+        npm install --prefix testrunner
+        node testrunner/app.js &
+    - name: Run a test
+      run: |
+        git clone https://github.com/sitespeedio/sitespeed.io.git
+        cd sitespeed.io
+        npm install
+        bin/sitespeed.js ../test/addatest.mjs --multi -n 1 --headless

test/addatest.mjs

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+/**
+ * @param {import('browsertime').BrowsertimeContext} context
+ * @param {import('browsertime').BrowsertimeCommands} commands
+ */
+export default async function (context, commands) {
+    await commands.navigate('http://127.0.0.1:3000');
+    await commands.addText.byId('https://www.wikipedia.org', 'url');
+    await commands.select.selectByIdAndValue('iterations', 1); 
+    await commands.mouse.singleClick.byXpath('/html/body/section/div/div[2]/ul/li[2]');
+    await commands.wait.byId('commandlinearea', 5000);
+    await commands.addText.byId('--headless', 'commandlinearea');
+    await commands.measure.start('RunTest');
+    await commands.click.byId('submittest');
+    await commands.wait.byXpath('/html/body/div[2]/h1',30000);
+    return commands.measure.stop();
+  }