Migrate to Github Actions for CI (#3)

.github/workflows/php.yml

@@ -0,0 +1,57 @@
+name: CI
+
+on:
+    push:
+        branches:
+            - master
+    pull_request:
+
+env:
+    DEFAULT_COMPOSER_FLAGS: --no-interaction --no-ansi --no-progress --no-suggest
+
+jobs:
+
+    test:
+
+        name: Test
+
+        runs-on: ubuntu-latest
+
+        strategy:
+            matrix:
+                php-version:
+                    - 7.1
+                    - 7.2
+                    - 7.3
+                    - 7.4
+                dependencies:
+                    - low
+                    - high
+        steps:
+            - uses: actions/checkout@v2
+
+            - name: Set up PHP
+              uses: shivammathur/setup-php@v2
+              with:
+                  php-version: ${{ matrix.php-version }}
+
+            - name: Show PHP info
+              run: php -v
+
+            - name: Validate Composer
+              run: composer validate
+
+            - name: Install dependencies
+              run: |
+                  if [[ ${{ matrix.dependencies }} = 'high' ]]; then composer update $DEFAULT_COMPOSER_FLAGS; fi
+                  if [[ ${{ matrix.dependencies }} = 'low' ]]; then composer update $DEFAULT_COMPOSER_FLAGS --prefer-lowest; fi
+
+
+            - name: PHPUnit
+              run: composer phpunit
+
+            - name: PHPStan
+              run: composer phpstan
+
+            - name: PHPCS
+              run: composer phpcs

README.md

@@ -1,5 +1,7 @@
 # JWT - JSON Web Tokens
 
+![CI](https://github.com/Firehed/jwt/workflows/CI/badge.svg)
+
 ## Installation
 `composer require firehed/jwt`
 
@@ -87,7 +89,7 @@ Note: key ID can take any scalar format. The example above uses a datestamp, but
 
 When calling `getClaims()`, an exception may be thrown if the signature cannot be verified or the time validity specified in standard `nbf` or `exp` claims is out of line.
 
-Be prepared to catch `InvalidSignatureException`, `TokenExpiredException`, and `TokenNotYetValidException` when calling those methods. 
+Be prepared to catch `InvalidSignatureException`, `TokenExpiredException`, and `TokenNotYetValidException` when calling those methods.
 
 If an invalid token is passed to `JWT::fromEncoded()`, an `InvalidFormatException` will be thrown.
 
@@ -174,4 +176,4 @@ try {
 }
 ```
 
-`SessionHandler` will always use the default value from the `KeyContainer`. That means the most recently key will be used unless one was specified with `->setDefaultKey()`.
+`SessionHandler` will always use the default value from the `KeyContainer`. That means the most recently key will be used unless one was specified with `->setDefaultKey()`.