the beginnings of mock objects

src/TUnit/framework/mock/MockObject.php

@@ -0,0 +1,108 @@
+<?php
+
+	interface MockObject {}
+
+	class MockObjectCreator {
+		
+		protected $referenceObject;
+		protected $methods;
+		
+		public function __construct($class) {
+			if (!class_exists($class) || !interface_exists($class)) {
+				throw new InvalidArgumentException('The class "' . $class . '" does not exist');
+			}
+			
+			$refClass = new ReflectionClass($class);
+			
+			if ($refClass->isFinal()) {
+				throw new LogicException('The class "' . $class . '" is final and cannot be mocked');
+			}
+			
+			$this->referenceObject = $refClass;
+			$this->methods = array(
+				'default' => array(),
+				'generic' => array()
+			);
+		}
+		
+		public function addMethod($methodName, $callParent = false, $body = '') {
+			$methodType = 'generic';
+			
+			if ($this->referenceObject->hasMethod($methodName)) {
+				$method = $this->referenceObject->getMethod($methodName);
+				if (!$this->methodIsMockable($method))
+					throw new LogicException('The method "' . $methodName . '" is static, private or final and cannot be mocked');
+				}
+				
+				if ($method->isConstructor() || $method->isDestructor()) {
+					$body = '';
+				}
+				
+				$methodType = 'default';
+			} else {
+				$callParent = false;
+			}
+			
+			$this->methods[$methodType][$methodName] = array(
+				'body'        => strval($body),
+				'call_parent' => (bool)$callParent
+			);
+			
+			return $this;
+		}
+		
+		protected function methodIsMockable(ReflectionMethod $method) {
+			return !$method->isFinal() && !$method->isPrivate() && !$method->isStatic();
+		}
+		
+		protected function getDefaultMethodBody() {
+			
+		}
+		
+		public function generate(array $constructorArgs = array(), $name = '') {
+			if (empty($name)) {
+				$className = $this->referenceObject->getName();
+				do {
+					$name = 'Mock_' . $className . '_' . uniqid();
+				} while (class_exists($name) || interface_exists($name));
+			}
+			
+			if (class_exists($name) || interface_exists($name)) {
+				throw new RuntimeException('Cannot use the name "' . $name . '" for mock object because the class or interface already exists');
+			}
+		}
+		
+		private function generateClassDefinition(ReflectionClass $class, array $methods, array $args, $name) {
+			$code = 'class ' . $name . ' ' . ($class->isInterface() ? 'implements' : 'extends') . $class->getName() . ' {' . "\n";
+			
+			$genericMethods = array();
+			foreach ($methods as $method) {
+				if ($class->hasMethod($method)) {
+					$code .= self::generateMethodDefinition($class->getMethod($method));
+				}
+			}
+			
+			$code .= '}';
+			return $code;
+		}
+		
+		private function generateMethodDefinition(ReflectionMethod $method) {
+			
+		}
+		
+		private function generateGenericMethodDefinition(array $methods) {
+			$code  = 'public function __call($method, array $args) {' . "\n";
+			$code .= '	$allowedMethods = ' . var_export($methods, true) . ';' . "\n";
+			$code .= '	if (in_array($method, $allowedMethods)) {' . "\n";
+			$code .= '		' . "\n";
+			$code .= '	} else {' . "\n";
+			$code .= '		throw new BadMethodCallException(\'The method "\' . $method . \'" does not exist on the mocked class "\' . get_class($this) . \'"\');' . "\n";
+			$code .= '	}' . "\n";
+			$code .= '}';
+			
+			return $code;
+		}
+		
+	}
+
+?>