Add missing tests for splitWithOffset

Author: Seldaek

tests/PregTests/SplitWithOffsetTest.php

@@ -0,0 +1,65 @@
+<?php
+
+/*
+ * This file is part of composer/pcre.
+ *
+ * (c) Composer <https://github.com/composer>
+ *
+ * For the full copyright and license information, please view
+ * the LICENSE file that was distributed with this source code.
+ */
+
+namespace Composer\Pcre\PregTests;
+
+use Composer\Pcre\BaseTestCase;
+use Composer\Pcre\Preg;
+
+class SplitWithOffsetTest extends BaseTestCase
+{
+    /**
+     * This can be replaced with a setUp() method when appropriate
+     *
+     * @before
+     * @return void
+     */
+    public function registerFunctionName()
+    {
+        $this->pregFunction = 'preg_split()';
+    }
+
+    /**
+     * @return void
+     */
+    public function testSuccess()
+    {
+        $result = Preg::splitWithOffset('{[\s,]+}', 'a, b, c');
+        self::assertSame(array(array('a', 0), array('b', 3), array('c', 6)), $result);
+    }
+
+    /**
+     * @return void
+     */
+    public function testFailure()
+    {
+        $result = Preg::splitWithOffset('{[\s,]+}', 'abc');
+        self::assertSame(array(array('abc', 0)), $result);
+    }
+
+    /**
+     * @return void
+     */
+    public function testBadPatternThrowsIfWarningsAreNotThrowing()
+    {
+        $this->expectPcreException($pattern = '{[\s,]+');
+        @Preg::splitWithOffset($pattern, 'a, b, c');
+    }
+
+    /**
+     * @return void
+     */
+    public function testBadPatternTriggersWarningByDefault()
+    {
+        $this->expectPcreWarning();
+        Preg::splitWithOffset('{[\s,]+', 'a, b, c');
+    }
+}