comparison sites/all/modules/ctools/tests/math_expression_stack.test @ 0:ff03f76ab3fe

initial version

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