Run tests as a GitHub CI workflow

.github/workflows/test.yml

@@ -0,0 +1,43 @@
+name: Test
+
+on:
+  push:
+    branches:
+      - master
+  pull_request:
+    branches:
+      - master
+
+env:
+  CI: true
+
+jobs:
+  run:
+    name: Node ${{ matrix.node }} / ${{ matrix.os }}
+    runs-on: ${{ matrix.os }}
+
+    strategy:
+      fail-fast: false
+      matrix:
+        os:
+          - ubuntu-latest
+        node:
+          - 14
+
+    steps:
+      - name: Clone Repository
+        uses: actions/checkout@v2
+
+      - name: Set Node.js Version
+        uses: actions/setup-node@v1
+        with:
+          node-version: ${{ matrix.node }}
+
+      - run: node --version
+      - run: npm --version
+
+      - name: Install Dependencies
+        run: npm ci
+
+      - name: Run Tests
+        run: npm test

rendering/cases/layer-vectortile-rendermode-vector/main.js

@@ -27,5 +27,5 @@ new Map({
 
 render({
   message: 'Vector tile layer renders with vector render mode',
-  tolerance: 0.01,
+  tolerance: 0.02,
 });

rendering/cases/layer-vectortile-rotate-vector/main.js

@@ -48,4 +48,7 @@ new Map({
   }),
 });
 
-render({message: 'Vector tile layer rotates with vector layer on top'});
+render({
+  message: 'Vector tile layer rotates with vector layer on top',
+  tolerance: 0.01,
+});

rendering/cases/layer-vectortile-rotate/main.js

@@ -24,4 +24,4 @@ const map = new Map({
 });
 
 map.getView().setRotation(Math.PI / 4);
-render({message: 'Vector tile layer rotates'});
+render({message: 'Vector tile layer rotates', tolerance: 0.01});

rendering/cases/layer-vectortile-simple/main.js

@@ -25,5 +25,5 @@ new Map({
 
 render({
   message: 'Vector tile layer renders',
-  tolerance: 0.01,
+  tolerance: 0.02,
 });

rendering/cases/multiple-layers/main.js

@@ -46,4 +46,4 @@ const unmanaged = new VectorLayer({
 });
 unmanaged.setMap(map);
 
-render();
+render({tolerance: 0.01});

rendering/test.js

@@ -381,7 +381,7 @@ if (require.main === module) {
     .option('headless', {
       describe: 'Launch Puppeteer in headless mode',
       type: 'boolean',
-      default: false,
+      default: !!process.env.CI,
     })
     .option('puppeteer-args', {
       describe: 'Additional args for Puppeteer',

test/karma.config.js

@@ -2,7 +2,7 @@ const path = require('path');
 
 module.exports = function (karma) {
   karma.set({
-    browsers: ['Chrome'],
+    browsers: [process.env.CI ? 'ChromeHeadless' : 'Chrome'],
     browserDisconnectTolerance: 2,
     frameworks: ['mocha'],
     client: {