Compatibility with PHPUnit 6.x

.travis.yml

@@ -17,7 +17,7 @@ cache:
 
 install:
   - travis_retry composer self-update && composer --version
-  - travis_retry composer global require "fxp/composer-asset-plugin:~1.1.1"
+  - travis_retry composer global require "fxp/composer-asset-plugin:^1.2.0"
   - export PATH="$HOME/.composer/vendor/bin:$PATH"
   - travis_retry composer install --prefer-dist --no-interaction
 

tests/ActiveFieldTest.php

@@ -36,7 +36,8 @@ class ActiveFieldTest extends TestCase
 
         $this->helperModel = new DynamicModel(['attributeName']);
         ob_start();
-        $this->helperForm = new ActiveForm(['action' => '/something']);
+        $this->helperForm = ActiveForm::begin(['action' => '/something', 'enableClientScript' => false]);
+        ActiveForm::end();
         ob_end_clean();
 
         $this->activeField = new ActiveField(['form' => $this->helperForm]);

tests/CollapseTest.php

@@ -2,6 +2,7 @@
 namespace yiiunit\extensions\bootstrap;
 
 use yii\bootstrap\Collapse;
+use yii\widgets\ActiveForm;
 
 /**
  * @group bootstrap
@@ -116,7 +117,8 @@ HTML
     {
         $template = ['template' => '{input}'];
         ob_start();
-        $form = \yii\widgets\ActiveForm::begin(['action' => '/something']);
+        $form = ActiveForm::begin(['action' => '/something']);
+        ActiveForm::end();
         ob_end_clean();
         $model = new data\Singer;
 

tests/TestCase.php

@@ -9,7 +9,7 @@ use Yii;
 /**
  * This is the base class for all yii framework unit tests.
  */
-abstract class TestCase extends \PHPUnit_Framework_TestCase
+abstract class TestCase extends \PHPUnit\Framework\TestCase
 {
     protected function setUp()
     {

tests/bootstrap.php

@@ -13,3 +13,5 @@ require_once(__DIR__ . '/../vendor/yiisoft/yii2/Yii.php');
 
 Yii::setAlias('@yiiunit/extensions/bootstrap', __DIR__);
 Yii::setAlias('@yii/bootstrap', dirname(__DIR__));
+
+require_once(__DIR__ . '/compatibility.php');
\ No newline at end of file

tests/compatibility.php

+<?php
+/*
+ * Ensures compatibility with PHPUnit < 6.x
+ */
+
+namespace PHPUnit\Framework\Constraint {
+    if (!class_exists('PHPUnit\Framework\Constraint\Constraint') && class_exists('PHPUnit_Framework_Constraint')) {
+        abstract class Constraint extends \PHPUnit_Framework_Constraint {}
+    }
+}
+
+namespace PHPUnit\Framework {
+    if (!class_exists('PHPUnit\Framework\TestCase') && class_exists('PHPUnit_Framework_TestCase')) {
+        abstract class TestCase extends \PHPUnit_Framework_TestCase {
+            /**
+             * @param string $exception
+             */
+            public function expectException($exception)
+            {
+                $this->setExpectedException($exception);
+            }
+
+            /**
+             * @param string $message
+             */
+            public function expectExceptionMessage($message)
+            {
+                $this->setExpectedException($this->getExpectedException(), $message);
+            }
+        }
+    }
+}