Add initial implementation of github actions to run tests

.github/workflows/static_tests.yml

@@ -0,0 +1,19 @@
+name: Static Tests
+
+on:
+  pull_request:
+  push:
+    branches:
+      - master
+
+jobs:
+  static_tests:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v2
+      - uses: shivammathur/setup-php@v2
+        with:
+          php-version: 8.1
+          coverage: none # disable xdebug, pcov
+      - run: composer install --no-progress --no-interaction --no-suggest
+      - run: composer static-tests

.github/workflows/tests.yml

@@ -0,0 +1,45 @@
+name: Tests
+
+on:
+  pull_request:
+  push:
+    branches:
+      - master
+
+jobs:
+  tests:
+    runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        php:
+          - "8.1"
+        dependency-version:
+          # - prefer-lowest
+          - prefer-stable
+
+    name: PHP ${{ matrix.php }} - ${{ matrix.dependency-version }} - tests
+    steps:
+      # basically git clone
+      - uses: actions/checkout@v2
+
+      - name: Setup Git
+        run: |
+          git --version
+          git config --global user.email "[email protected]"
+          git config --global user.name "GitHub Action"
+          git --version
+
+      - name: Setup PHP
+        # use PHP of specific version
+        uses: shivammathur/setup-php@v2
+        with:
+          php-version: ${{ matrix.php }}
+          coverage: none # disable xdebug, pcov
+          tools: composer
+
+      - name: Install Composer Dependencies
+        run: |
+          composer update --${{ matrix.dependency-version }} --prefer-dist --no-interaction --no-suggest
+
+      - name: Run PHPUnit Tests
+        run: composer tests

composer.json

@@ -24,7 +24,7 @@
     "php": ">=8.1"
   },
   "require-dev": {
-    "phpunit/phpunit": "^5.7 | ^7.5 | ^8.0 | ^9.0",
+    "phpunit/phpunit": "^7.5 | ^8.0 | ^9.0",
     "rector/rector": "^0.13.6",
     "symplify/easy-coding-standard": "^11.0",
     "vimeo/psalm": "^4.24"

lib/Common/GridSampler.php

@@ -145,7 +145,7 @@ protected static function checkAndNudgePoints(
 	 * transformation is determined by the coordinates of 4 points, in the original and transformed
 	 * image space.
 	 *
-	 * @param image $image      to sample
+	 * @param BitMatrix $image      image to sample
 	 * @param int $dimensionX width of {@link BitMatrix} to sample from image
 	 * @param int $dimensionY height of {@link BitMatrix} to sample from image
 	 * @param float      $p1ToX point 1 preimage X