PHPUnit: use annotations for fixtures / cross-version compat up to PHPUnit 9.x

As of PHPUnit 8.x, the method signature for the `setUpBeforeClass()`, `setUp()`, `tearDown()` and `tearDownAfterClass()` fixture methods has changed to require the `void` return type.

As the `void` return type isn't available until PHP 7.1, this cannot be implemented.

Anntations to the rescue.
By renaming the `setUpBeforeClass()` methods to another, descriptive name and using the `@beforeClass` annotation, the tests can be made cross-version compatible up to PHPUnit 9.x.

With this change, the unit tests can now be run on PHPUnit 4 - 9.

As PHPUnit has a caching feature build in as of PHPUnit 8, we need to add the `.phpunit.result.cache` file to `.gitignore`.

Author: jrfnl

.gitignore

@@ -1,3 +1,4 @@
 /vendor/
 /composer.lock
 phpunit.xml
+.phpunit.result.cache

composer.json

@@ -18,7 +18,7 @@
         "php-parallel-lint/php-console-highlighter": "For colored console output"
     },
     "require-dev": {
-        "phpunit/phpunit": "^4.8.36 || ^5.0 || ^6.0 || ^7.0",
+        "phpunit/phpunit": "^4.8.36 || ^5.0 || ^6.0 || ^7.0 || ^8.0 || ^9.0",
         "php-parallel-lint/php-parallel-lint": "^1.0"
     },
     "bin": ["var-dump-check"],

tests/JakubOnderka/PhpVarDumpCheck/CheckTest.php

@@ -8,7 +8,10 @@ class CheckTest extends TestCase
     protected static $uut;
 
 
-    public static function setUpBeforeClass()
+    /**
+     * @beforeClass
+     */
+    public static function initializeCheckerWithSettings()
     {
         $settings = new PhpVarDumpCheck\Settings();
         self::$uut = new PhpVarDumpCheck\Checker($settings);

tests/JakubOnderka/PhpVarDumpCheck/DoctrineTest.php

@@ -8,7 +8,10 @@ class DoctrineTest extends TestCase
     protected static $uut;
 
 
-    public static function setUpBeforeClass()
+    /**
+     * @beforeClass
+     */
+    public static function initializeCheckerWithSettings()
     {
         $settings = new PhpVarDumpCheck\Settings();
         $settings->functionsToCheck = array_merge($settings->functionsToCheck, [

tests/JakubOnderka/PhpVarDumpCheck/LadybugTest.php

@@ -8,7 +8,10 @@ class LadybugTest extends TestCase
     protected static $uut;
 
 
-    public static function setUpBeforeClass()
+    /**
+     * @beforeClass
+     */
+    public static function initializeCheckerWithSettings()
     {
         $settings = new PhpVarDumpCheck\Settings();
         $settings->functionsToCheck = array_merge($settings->functionsToCheck, [

tests/JakubOnderka/PhpVarDumpCheck/LaravelTest.php

@@ -8,7 +8,10 @@ class LaravelTest extends TestCase
     protected static $uut;
 
 
-    public static function setUpBeforeClass()
+    /**
+     * @beforeClass
+     */
+    public static function initializeCheckerWithSettings()
     {
         $settings = new PhpVarDumpCheck\Settings();
         $settings->functionsToCheck = array_merge($settings->functionsToCheck, [

tests/JakubOnderka/PhpVarDumpCheck/StandardPHPDumpTest.php

@@ -8,7 +8,10 @@ class StandardPHPDumpTest extends TestCase
     protected static $uut;
 
 
-    public static function setUpBeforeClass()
+    /**
+     * @beforeClass
+     */
+    public static function initializeCheckerWithSettings()
     {
         $settings = new PhpVarDumpCheck\Settings();
         self::$uut = new PhpVarDumpCheck\Checker($settings);

tests/JakubOnderka/PhpVarDumpCheck/SymfonyTest.php

@@ -8,7 +8,10 @@ class SymfonyTest extends TestCase
     protected static $uut;
 
 
-    public static function setUpBeforeClass()
+    /**
+     * @beforeClass
+     */
+    public static function initializeCheckerWithSettings()
     {
         $settings = new PhpVarDumpCheck\Settings();
         $settings->functionsToCheck = array_merge($settings->functionsToCheck, [

tests/JakubOnderka/PhpVarDumpCheck/TracyTest.php

@@ -8,7 +8,10 @@ class TracyTest extends TestCase
     protected static $uut;
 
 
-    public static function setUpBeforeClass()
+    /**
+     * @beforeClass
+     */
+    public static function initializeCheckerWithSettings()
     {
         $settings = new PhpVarDumpCheck\Settings();
         $settings->functionsToCheck = array_merge($settings->functionsToCheck, [

tests/JakubOnderka/PhpVarDumpCheck/ZendTest.php

@@ -8,7 +8,10 @@ class ZendTest extends TestCase
     protected static $uut;
 
 
-    public static function setUpBeforeClass()
+    /**
+     * @beforeClass
+     */
+    public static function initializeCheckerWithSettings()
     {
         $settings = new PhpVarDumpCheck\Settings();
         $settings->functionsToCheck = array_merge($settings->functionsToCheck, [