Set PhpUnit version for older php

.travis.yml

@@ -12,20 +12,19 @@ cache:
     - $HOME/.composer/cache
     - $HOME/.cache
 
-php:
-  - 5.4
-  - 5.5
-  - 5.6
-  - 7.0
-  - 7.1
-  - 7.2
-  - 7.3
-  - 7.4
-
 matrix:
   include:
     - php: 5.4
-      env: COMPOSER_FLAGS="--prefer-lowest"
+      env:
+        - COMPOSER_FLAGS="--prefer-lowest"
+    - php: 5.4
+    - php: 5.5
+    - php: 5.6
+    - php: 7.0
+    - php: 7.1
+    - php: 7.2
+    - php: 7.3
+    - php: 7.4
 
 before_install:
   - sudo add-apt-repository ppa:mc3man/trusty-media -y
@@ -38,4 +37,4 @@ install:
   - composer update --prefer-dist $COMPOSER_FLAGS
 
 script:
-  - vendor/bin/simple-phpunit --verbose
+  - vendor/bin/phpunit --verbose

composer.json

@@ -44,7 +44,7 @@
     "require-dev": {
         "sami/sami": "~1.0",
         "silex/silex": "~1.0",
-        "symfony/phpunit-bridge": "^4.2.12 || ^5.0.4"
+        "phpunit/phpunit": "^4.8.36 || ^5.0 || ^6.0 || ^7.0"
     },
     "autoload": {
         "psr-0": {

tests/BaseTestCase.php

@@ -0,0 +1,60 @@
+<?php
+
+namespace Tests\FFMpeg;
+
+use PHPUnit\Framework\TestCase;
+
+class BaseTestCase extends TestCase
+{
+    public function assertScalar($value, $message = '')
+    {
+        $this->assertTrue(is_scalar($value), $message);
+    }
+
+    /**
+     * Can be removed when phpunit 4.8 (<= needed for php 5.5) support is removed.
+     */
+    public function assertIsArray($value, $message = '')
+    {
+        $this->assertTrue(is_array($value), $message);
+    }
+
+    /**
+     * Can be removed when phpunit 4.8 (<= needed for php 5.5) support is removed.
+     */
+    public function assertIsInt($value, $message = '')
+    {
+        $this->assertTrue(is_int($value), $message);
+    }
+
+    /**
+     * Can be removed when phpunit 4.8 (<= needed for php 5.5) support is removed.
+     */
+    public function assertIsBool($value, $message = '')
+    {
+        $this->assertTrue(is_bool($value), $message);
+    }
+
+    /**
+     * Can be removed when phpunit 4.8 (<= needed for php 5.5) support is removed.
+     */
+    public function assertIsString($value, $message = '')
+    {
+        $this->assertTrue(is_string($value), $message);
+    }
+
+    /**
+     * Can be removed when phpunit 4.8 (<= needed for php 5.5) support is removed.
+     */
+    public function expectException($exception)
+    {
+        // PHPUnt BC Layer
+        if (method_exists(get_parent_class(), 'expectException')) {
+            parent::expectException($exception);
+
+            return;
+        }
+
+        $this->setExpectedException($exception);
+    }
+}

tests/Functional/FunctionalTestCase.php

@@ -3,9 +3,9 @@
 namespace Tests\FFMpeg\Functional;
 
 use FFMpeg\FFMpeg;
-use PHPUnit\Framework\TestCase;
+use Tests\FFMpeg\BaseTestCase;
 
-abstract class FunctionalTestCase extends TestCase
+abstract class FunctionalTestCase extends BaseTestCase
 {
     /**
      * @return FFMpeg

tests/Unit/FFMpegServiceProviderTest.php

@@ -4,9 +4,8 @@ namespace Tests\FFMpeg\Unit;
 
 use FFMpeg\FFMpegServiceProvider;
 use Silex\Application;
-use PHPUnit\Framework\TestCase as BaseTestCase;
 
-class FFMpegServiceProviderTest extends BaseTestCase
+class FFMpegServiceProviderTest extends TestCase
 {
     public function testWithConfig()
     {

tests/Unit/TestCase.php

@@ -2,15 +2,10 @@
 
 namespace Tests\FFMpeg\Unit;
 
-use PHPUnit\Framework\TestCase as BaseTestCase;
+use Tests\FFMpeg\BaseTestCase;
 
 class TestCase extends BaseTestCase
 {
-    public function assertScalar($value)
-    {
-        $this->assertTrue(is_scalar($value));
-    }
-
     public function getLoggerMock()
     {
         return $this->getMockBuilder('Psr\Log\LoggerInterface')->getMock();