--- /dev/null
+<?php
+
+/*
+ * This file is part of the Symfony package.
+ *
+ * (c) Fabien Potencier <fabien@symfony.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Symfony\Component\Config\Tests\Definition;
+
+use PHPUnit\Framework\TestCase;
+use Symfony\Component\Config\Definition\Builder\TreeBuilder;
+
+class MergeTest extends TestCase
+{
+ /**
+ * @expectedException \Symfony\Component\Config\Definition\Exception\ForbiddenOverwriteException
+ */
+ public function testForbiddenOverwrite()
+ {
+ $tb = new TreeBuilder();
+ $tree = $tb
+ ->root('root', 'array')
+ ->children()
+ ->node('foo', 'scalar')
+ ->cannotBeOverwritten()
+ ->end()
+ ->end()
+ ->end()
+ ->buildTree()
+ ;
+
+ $a = array(
+ 'foo' => 'bar',
+ );
+
+ $b = array(
+ 'foo' => 'moo',
+ );
+
+ $tree->merge($a, $b);
+ }
+
+ public function testUnsetKey()
+ {
+ $tb = new TreeBuilder();
+ $tree = $tb
+ ->root('root', 'array')
+ ->children()
+ ->node('foo', 'scalar')->end()
+ ->node('bar', 'scalar')->end()
+ ->node('unsettable', 'array')
+ ->canBeUnset()
+ ->children()
+ ->node('foo', 'scalar')->end()
+ ->node('bar', 'scalar')->end()
+ ->end()
+ ->end()
+ ->node('unsetted', 'array')
+ ->canBeUnset()
+ ->prototype('scalar')->end()
+ ->end()
+ ->end()
+ ->end()
+ ->buildTree()
+ ;
+
+ $a = array(
+ 'foo' => 'bar',
+ 'unsettable' => array(
+ 'foo' => 'a',
+ 'bar' => 'b',
+ ),
+ 'unsetted' => false,
+ );
+
+ $b = array(
+ 'foo' => 'moo',
+ 'bar' => 'b',
+ 'unsettable' => false,
+ 'unsetted' => array('a', 'b'),
+ );
+
+ $this->assertEquals(array(
+ 'foo' => 'moo',
+ 'bar' => 'b',
+ 'unsettable' => false,
+ 'unsetted' => array('a', 'b'),
+ ), $tree->merge($a, $b));
+ }
+
+ /**
+ * @expectedException \Symfony\Component\Config\Definition\Exception\InvalidConfigurationException
+ */
+ public function testDoesNotAllowNewKeysInSubsequentConfigs()
+ {
+ $tb = new TreeBuilder();
+ $tree = $tb
+ ->root('config', 'array')
+ ->children()
+ ->node('test', 'array')
+ ->disallowNewKeysInSubsequentConfigs()
+ ->useAttributeAsKey('key')
+ ->prototype('array')
+ ->children()
+ ->node('value', 'scalar')->end()
+ ->end()
+ ->end()
+ ->end()
+ ->end()
+ ->end()
+ ->buildTree();
+
+ $a = array(
+ 'test' => array(
+ 'a' => array('value' => 'foo'),
+ ),
+ );
+
+ $b = array(
+ 'test' => array(
+ 'b' => array('value' => 'foo'),
+ ),
+ );
+
+ $tree->merge($a, $b);
+ }
+
+ public function testPerformsNoDeepMerging()
+ {
+ $tb = new TreeBuilder();
+
+ $tree = $tb
+ ->root('config', 'array')
+ ->children()
+ ->node('no_deep_merging', 'array')
+ ->performNoDeepMerging()
+ ->children()
+ ->node('foo', 'scalar')->end()
+ ->node('bar', 'scalar')->end()
+ ->end()
+ ->end()
+ ->end()
+ ->end()
+ ->buildTree()
+ ;
+
+ $a = array(
+ 'no_deep_merging' => array(
+ 'foo' => 'a',
+ 'bar' => 'b',
+ ),
+ );
+
+ $b = array(
+ 'no_deep_merging' => array(
+ 'c' => 'd',
+ ),
+ );
+
+ $this->assertEquals(array(
+ 'no_deep_merging' => array(
+ 'c' => 'd',
+ ),
+ ), $tree->merge($a, $b));
+ }
+
+ public function testPrototypeWithoutAKeyAttribute()
+ {
+ $tb = new TreeBuilder();
+
+ $tree = $tb
+ ->root('config', 'array')
+ ->children()
+ ->arrayNode('append_elements')
+ ->prototype('scalar')->end()
+ ->end()
+ ->end()
+ ->end()
+ ->buildTree()
+ ;
+
+ $a = array(
+ 'append_elements' => array('a', 'b'),
+ );
+
+ $b = array(
+ 'append_elements' => array('c', 'd'),
+ );
+
+ $this->assertEquals(array('append_elements' => array('a', 'b', 'c', 'd')), $tree->merge($a, $b));
+ }
+}