Enhancement: Switch from Travis CI to GitHub Actions

Author: localheinz

.github/workflows/integrate.yaml

@@ -0,0 +1,76 @@
+# https://docs.github.com/en/actions
+
+name: "Integrate"
+
+on:
+  pull_request: null
+  push:
+    branches:
+      - "master"
+
+jobs:
+  tests:
+    name: "Tests"
+
+    runs-on: "ubuntu-latest"
+
+    strategy:
+      fail-fast: false
+
+      matrix:
+        include:
+          - php-version: "7.1"
+            phpunit-version: "7.*"
+
+          - php-version: "7.2"
+            phpunit-version: "7.*"
+
+          - php-version: "7.2"
+            phpunit-version: "8.*"
+
+          - php-version: "7.3"
+            phpunit-version: "8.*"
+
+          - php-version: "7.3"
+            phpunit-version: "9.*"
+
+          - php-version: "7.4"
+            phpunit-version: "8.*"
+
+          - php-version: "7.4"
+            phpunit-version: "9.*"
+
+          - php-version: "8.0"
+            phpunit-version: "8.*"
+
+          - php-version: "8.0"
+            phpunit-version: "9.*"
+
+    steps:
+      - name: "Checkout"
+        uses: "actions/checkout@v2"
+
+      - name: "Set up PHP"
+        uses: "shivammathur/setup-php@v2"
+        with:
+          coverage: "none"
+          php-version: "${{ matrix.php-version }}"
+
+      - name: "Set up problem matchers for phpunit/phpunit"
+        run: "echo \"::add-matcher::${{ runner.tool_cache }}/phpunit.json\""
+
+      - name: "Determine composer cache directory"
+        run: "echo \"COMPOSER_CACHE_DIR=$(composer config cache-dir)\" >> $GITHUB_ENV"
+
+      - name: "Cache dependencies installed with composer"
+        uses: "actions/cache@v2"
+        with:
+          path: "${{ env.COMPOSER_CACHE_DIR }}"
+          key: "php-${{ matrix.php-version }}-composer-${{ matrix.phpunit-version }}"
+          restore-keys: "php-${{ matrix.php-version }}-composer-"
+
+      - name: "Require phpunit/phpunit ${{ matrix.phpunit-version }}"
+        run: "composer require phpunit/phpunit:${{ matrix.phpunit-version }}"
+
+      - name: "Run tests with phpunit/phpunit"
+        run: "vendor/bin/phpunit"

.travis.yml

@@ -1,6 +1,6 @@
 # phpunit-speedtrap
 
-[![Build Status](https://travis-ci.org/johnkary/phpunit-speedtrap.svg?branch=master)](https://travis-ci.org/johnkary/phpunit-speedtrap)
+[![Integrate](https://github.com/johnkary/phpunit-speedtrap/workflows/Integrate/badge.svg?branch=master)](https://github.com/johnkary/phpunit-speedtrap/actions)
 
 SpeedTrap reports on slow-running PHPUnit tests right in the console.