danielebarchiesi@0: <?php
danielebarchiesi@0: 
danielebarchiesi@0: /**
danielebarchiesi@0:  * @file
danielebarchiesi@0:  * Contains \CtoolsMathExpressionStackTestCase
danielebarchiesi@0:  */
danielebarchiesi@0: 
danielebarchiesi@0: /**
danielebarchiesi@0:  * Tests the simple MathExpressionStack class.
danielebarchiesi@0:  */
danielebarchiesi@0: class CtoolsMathExpressionStackTestCase extends DrupalWebTestCase {
danielebarchiesi@0:   public static function getInfo() {
danielebarchiesi@0:     return array(
danielebarchiesi@0:       'name' => 'CTools math expression stack tests',
danielebarchiesi@0:       'description' => 'Test the stack class of the math expression library.',
danielebarchiesi@0:       'group' => 'Chaos Tools Suite',
danielebarchiesi@0:     );
danielebarchiesi@0:   }
danielebarchiesi@0: 
danielebarchiesi@0:   public function setUp() {
danielebarchiesi@0:     parent::setUp('ctools', 'ctools_plugin_test');
danielebarchiesi@0:   }
danielebarchiesi@0: 
danielebarchiesi@0:   public function testStack() {
danielebarchiesi@0:     $stack = new ctools_math_expr_stack();
danielebarchiesi@0: 
danielebarchiesi@0:     // Test the empty stack.
danielebarchiesi@0:     $this->assertNull($stack->last());
danielebarchiesi@0:     $this->assertNull($stack->pop());
danielebarchiesi@0: 
danielebarchiesi@0:     // Add an element and see whether it's the right element.
danielebarchiesi@0:     $value = $this->randomName();
danielebarchiesi@0:     $stack->push($value);
danielebarchiesi@0:     $this->assertIdentical($value, $stack->last());
danielebarchiesi@0:     $this->assertIdentical($value, $stack->pop());
danielebarchiesi@0:     $this->assertNull($stack->pop());
danielebarchiesi@0: 
danielebarchiesi@0:     // Add multiple elements and see whether they are returned in the right order.
danielebarchiesi@0:     $values = array($this->randomName(), $this->randomName(), $this->randomName());
danielebarchiesi@0:     foreach ($values as $value) {
danielebarchiesi@0:       $stack->push($value);
danielebarchiesi@0:     }
danielebarchiesi@0: 
danielebarchiesi@0:     // Test the different elements at different positions with the last() method.
danielebarchiesi@0:     $count = count($values);
danielebarchiesi@0:     foreach ($values as $key => $value) {
danielebarchiesi@0:       $this->assertEqual($value, $stack->last($count - $key));
danielebarchiesi@0:     }
danielebarchiesi@0: 
danielebarchiesi@0:     // Pass in a non-valid number to last.
danielebarchiesi@0:     $non_valid_number = rand(10, 20);
danielebarchiesi@0:     $this->assertNull($stack->last($non_valid_number));
danielebarchiesi@0: 
danielebarchiesi@0:     // Test the order of the poping.
danielebarchiesi@0:     $values = array_reverse($values);
danielebarchiesi@0:     foreach ($values as $key => $value) {
danielebarchiesi@0:       $this->assertEqual($stack->last(), $value);
danielebarchiesi@0:       $this->assertEqual($stack->pop(), $value);
danielebarchiesi@0:     }
danielebarchiesi@0:     $this->assertNull($stack->pop());
danielebarchiesi@0: 
danielebarchiesi@0:   }
danielebarchiesi@0: }