tests: migrate from Travis to GitHub Actions

.github/workflows/ci.yaml

@@ -0,0 +1,62 @@
+name: continuous-integration
+on:
+  push:
+    branches:
+      - master
+      - release/*
+  pull_request:
+jobs:
+  unit-testing:
+    name: PHPUnit (PHP ${{ matrix.php-versions }})
+    runs-on: ubuntu-latest
+    strategy:
+      fail-fast: false
+      matrix:
+        php-versions: ['7.2', '7.3', '7.4', '8.0', '8.1']
+        coverage: ['pcov']
+        code-analysis: ['no']
+        include:
+          - php-versions: '7.1'
+            coverage: 'none'
+            code-analysis: 'yes'
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v2
+
+      - name: Setup PHP, with composer and extensions
+        uses: shivammathur/setup-php@v2 #https://github.com/shivammathur/setup-php
+        with:
+          php-version: ${{ matrix.php-versions }}
+          extensions: mbstring, dom, fileinfo, mysql, redis, opcache
+          coverage: ${{ matrix.coverage }}
+          tools: composer
+
+      - name: Get composer cache directory
+        id: composer-cache
+        run: echo "::set-output name=dir::$(composer config cache-files-dir)"
+
+      - name: Cache composer dependencies
+        uses: actions/cache@v2
+        with:
+          path: ${{ steps.composer-cache.outputs.dir }}
+          # Use composer.json for key, if composer.lock is not committed.
+          # key: ${{ runner.os }}-composer-${{ hashFiles('**/composer.json') }}
+          key: ${{ runner.os }}-composer-${{ hashFiles('**/composer.lock') }}
+          restore-keys: ${{ runner.os }}-composer-
+
+      - name: Install Composer dependencies
+        run: composer install --no-progress --prefer-dist --optimize-autoloader
+
+      - name: Code Analysis(PHP CS-Fixer)
+        if: matrix.code-analysis == 'yes'
+        run: php vendor/bin/php-cs-fixer fix --dry-run --diff
+
+      - name: Code Analysis(PHPStan)
+        if: matrix.code-analysis == 'yes'
+        run: composer phpstan
+
+      - name: Test with phpunit
+        run: vendor/bin/phpunit --configuration tests/phpunit.xml --coverage-clover clover.xml
+
+      - uses: codecov/codecov-action@v2
+        if: matrix.coverage != 'none'

phpstan.neon

@@ -2,5 +2,5 @@ parameters:
   level: 5
   ignoreErrors:
     -
-      message: '!Parameter #3 \$uri of method XMLWriter::startElementNs\(\) expects string, null given.!'
+      message: '!Parameter #3 \$namespace of method XMLWriter::startElementNs\(\) expects string, null given.!'
       path: lib/Writer.php