--- /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\Builder;
+
+use PHPUnit\Framework\TestCase;
+use Symfony\Component\Config\Definition\Builder\TreeBuilder;
+
+class ExprBuilderTest extends TestCase
+{
+ public function testAlwaysExpression()
+ {
+ $test = $this->getTestBuilder()
+ ->always($this->returnClosure('new_value'))
+ ->end();
+
+ $this->assertFinalizedValueIs('new_value', $test);
+ }
+
+ public function testIfTrueExpression()
+ {
+ $test = $this->getTestBuilder()
+ ->ifTrue()
+ ->then($this->returnClosure('new_value'))
+ ->end();
+ $this->assertFinalizedValueIs('new_value', $test, array('key' => true));
+
+ $test = $this->getTestBuilder()
+ ->ifTrue(function ($v) { return true; })
+ ->then($this->returnClosure('new_value'))
+ ->end();
+ $this->assertFinalizedValueIs('new_value', $test);
+
+ $test = $this->getTestBuilder()
+ ->ifTrue(function ($v) { return false; })
+ ->then($this->returnClosure('new_value'))
+ ->end();
+ $this->assertFinalizedValueIs('value', $test);
+ }
+
+ public function testIfStringExpression()
+ {
+ $test = $this->getTestBuilder()
+ ->ifString()
+ ->then($this->returnClosure('new_value'))
+ ->end();
+ $this->assertFinalizedValueIs('new_value', $test);
+
+ $test = $this->getTestBuilder()
+ ->ifString()
+ ->then($this->returnClosure('new_value'))
+ ->end();
+ $this->assertFinalizedValueIs(45, $test, array('key' => 45));
+ }
+
+ public function testIfNullExpression()
+ {
+ $test = $this->getTestBuilder()
+ ->ifNull()
+ ->then($this->returnClosure('new_value'))
+ ->end();
+ $this->assertFinalizedValueIs('new_value', $test, array('key' => null));
+
+ $test = $this->getTestBuilder()
+ ->ifNull()
+ ->then($this->returnClosure('new_value'))
+ ->end();
+ $this->assertFinalizedValueIs('value', $test);
+ }
+
+ public function testIfArrayExpression()
+ {
+ $test = $this->getTestBuilder()
+ ->ifArray()
+ ->then($this->returnClosure('new_value'))
+ ->end();
+ $this->assertFinalizedValueIs('new_value', $test, array('key' => array()));
+
+ $test = $this->getTestBuilder()
+ ->ifArray()
+ ->then($this->returnClosure('new_value'))
+ ->end();
+ $this->assertFinalizedValueIs('value', $test);
+ }
+
+ public function testIfInArrayExpression()
+ {
+ $test = $this->getTestBuilder()
+ ->ifInArray(array('foo', 'bar', 'value'))
+ ->then($this->returnClosure('new_value'))
+ ->end();
+ $this->assertFinalizedValueIs('new_value', $test);
+
+ $test = $this->getTestBuilder()
+ ->ifInArray(array('foo', 'bar'))
+ ->then($this->returnClosure('new_value'))
+ ->end();
+ $this->assertFinalizedValueIs('value', $test);
+ }
+
+ public function testIfNotInArrayExpression()
+ {
+ $test = $this->getTestBuilder()
+ ->ifNotInArray(array('foo', 'bar'))
+ ->then($this->returnClosure('new_value'))
+ ->end();
+ $this->assertFinalizedValueIs('new_value', $test);
+
+ $test = $this->getTestBuilder()
+ ->ifNotInArray(array('foo', 'bar', 'value_from_config'))
+ ->then($this->returnClosure('new_value'))
+ ->end();
+ $this->assertFinalizedValueIs('new_value', $test);
+ }
+
+ public function testThenEmptyArrayExpression()
+ {
+ $test = $this->getTestBuilder()
+ ->ifString()
+ ->thenEmptyArray()
+ ->end();
+ $this->assertFinalizedValueIs(array(), $test);
+ }
+
+ /**
+ * @expectedException \Symfony\Component\Config\Definition\Exception\InvalidConfigurationException
+ */
+ public function testThenInvalid()
+ {
+ $test = $this->getTestBuilder()
+ ->ifString()
+ ->thenInvalid('Invalid value')
+ ->end();
+ $this->finalizeTestBuilder($test);
+ }
+
+ public function testThenUnsetExpression()
+ {
+ $test = $this->getTestBuilder()
+ ->ifString()
+ ->thenUnset()
+ ->end();
+ $this->assertEquals(array(), $this->finalizeTestBuilder($test));
+ }
+
+ /**
+ * @expectedException \RuntimeException
+ * @expectedExceptionMessage You must specify an if part.
+ */
+ public function testEndIfPartNotSpecified()
+ {
+ $this->getTestBuilder()->end();
+ }
+
+ /**
+ * @expectedException \RuntimeException
+ * @expectedExceptionMessage You must specify a then part.
+ */
+ public function testEndThenPartNotSpecified()
+ {
+ $builder = $this->getTestBuilder();
+ $builder->ifPart = 'test';
+ $builder->end();
+ }
+
+ /**
+ * Create a test treebuilder with a variable node, and init the validation.
+ *
+ * @return TreeBuilder
+ */
+ protected function getTestBuilder()
+ {
+ $builder = new TreeBuilder();
+
+ return $builder
+ ->root('test')
+ ->children()
+ ->variableNode('key')
+ ->validate()
+ ;
+ }
+
+ /**
+ * Close the validation process and finalize with the given config.
+ *
+ * @param TreeBuilder $testBuilder The tree builder to finalize
+ * @param array $config The config you want to use for the finalization, if nothing provided
+ * a simple array('key'=>'value') will be used
+ *
+ * @return array The finalized config values
+ */
+ protected function finalizeTestBuilder($testBuilder, $config = null)
+ {
+ return $testBuilder
+ ->end()
+ ->end()
+ ->end()
+ ->buildTree()
+ ->finalize(null === $config ? array('key' => 'value') : $config)
+ ;
+ }
+
+ /**
+ * Return a closure that will return the given value.
+ *
+ * @param mixed $val The value that the closure must return
+ *
+ * @return \Closure
+ */
+ protected function returnClosure($val)
+ {
+ return function ($v) use ($val) {
+ return $val;
+ };
+ }
+
+ /**
+ * Assert that the given test builder, will return the given value.
+ *
+ * @param mixed $value The value to test
+ * @param TreeBuilder $treeBuilder The tree builder to finalize
+ * @param mixed $config The config values that new to be finalized
+ */
+ protected function assertFinalizedValueIs($value, $treeBuilder, $config = null)
+ {
+ $this->assertEquals(array('key' => $value), $this->finalizeTestBuilder($treeBuilder, $config));
+ }
+}