Fix broken tests on PHPUnit 5

Author: Riimu

.travis.yml

@@ -17,7 +17,7 @@ before_install:
 
 install:
   - composer require --no-update --no-interaction "phpunit/phpunit:*" "squizlabs/php_codesniffer:*" "fabpot/php-cs-fixer:*"
-  - travis_retry composer install --no-interaction --prefer-source
+  - travis_retry composer update --no-interaction --prefer-source
   - travis_retry wget https://scrutinizer-ci.com/ocular.phar
 
 script:

tests/bootstrap.php

@@ -5,3 +5,4 @@
 
 require __DIR__ . '/extra/TestMockObject.php';
 require __DIR__ . '/extra/ExtendsTestMockObject.php';
+require __DIR__ . '/extra/StringObject.php';

tests/extra/TestMockObject.php

@@ -10,5 +10,6 @@ class TestMockObject
 
     public function __toString()
     {
+        return '';
     }
 }

tests/tests/ObjectEncodingTest.php

@@ -34,11 +34,10 @@ public function testStringConversion()
             'object.method' => false,
         ]);
 
-        $mock = $this->getMock('Test\TestMockObject', ['__toString', 'toPHP']);
-        $mock->expects($this->once())->method('__toString')->will($this->returnValue('Mocked'));
+        $mock = $this->getMock('Test\StringObject', ['toPHP']);
         $mock->expects($this->exactly(0))->method('toPHP');
 
-        $this->assertSame('Mocked', eval('return ' . $encoder->encode($mock) . ';'));
+        $this->assertSame('Stringed', eval('return ' . $encoder->encode($mock) . ';'));
     }
 
     public function testPHPValue()