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