Consistently inflect theme names.

Themes should be consistently converted into CamelCase, this
makes the camelization consitent with the treatment in App::themePath().

Fixes #3508

lib/Cake/Test/Case/View/ViewTest.php

@@ -300,7 +300,7 @@ public function testGetTemplate() {
 		$this->Controller->params['pass'] = array('home');
 
 		$ThemeView = new TestThemeView($this->Controller);
-		$ThemeView->theme = 'TestTheme';
+		$ThemeView->theme = 'test_theme';
 		$expected = CAKE . 'Test' . DS . 'test_app' . DS . 'View' . DS . 'Pages' . DS . 'home.ctp';
 		$result = $ThemeView->getViewFileName('home');
 		$this->assertEquals($expected, $result);
@@ -309,6 +309,7 @@ public function testGetTemplate() {
 		$result = $ThemeView->getViewFileName('/Posts/index');
 		$this->assertEquals($expected, $result);
 
+		$ThemeView->theme = 'TestTheme';
 		$expected = CAKE . 'Test' . DS . 'test_app' . DS . 'View' . DS . 'Themed' . DS . 'TestTheme' . DS . 'Layouts' . DS . 'default.ctp';
 		$result = $ThemeView->getLayoutFileName();
 		$this->assertEquals($expected, $result);
@@ -546,11 +547,7 @@ public function testMissingView() {
 		$this->ThemeController->params['pass'] = array('home');
 
 		$View = new TestThemeView($this->ThemeController);
-		ob_start();
-		$result = $View->getViewFileName('does_not_exist');
-		$expected = ob_get_clean();
-		$this->assertRegExp("/PagesController::/", $expected);
-		$this->assertRegExp("/views(\/|\\\)themed(\/|\\\)my_theme(\/|\\\)pages(\/|\\\)does_not_exist.ctp/", $expected);
+		$View->getViewFileName('does_not_exist');
 	}
 
 /**
@@ -577,11 +574,7 @@ public function testMissingLayout() {
 		$this->ThemeController->theme = 'my_theme';
 
 		$View = new TestThemeView($this->ThemeController);
-		ob_start();
 		$result = $View->getLayoutFileName();
-		$expected = ob_get_clean();
-		$this->assertRegExp("/Missing Layout/", $expected);
-		$this->assertRegExp("/views(\/|\\\)themed(\/|\\\)my_theme(\/|\\\)layouts(\/|\\\)whatever.ctp/", $expected);
 	}
 
 /**

lib/Cake/View/View.php

@@ -1111,13 +1111,14 @@ protected function _paths($plugin = null, $cached = true) {
 
 		$paths = array_unique(array_merge($paths, $viewPaths));
 		if (!empty($this->theme)) {
+			$theme = Inflector::camelize($this->theme);
 			$themePaths = array();
 			foreach ($paths as $path) {
 				if (strpos($path, DS . 'Plugin' . DS) === false) {
 					if ($plugin) {
-						$themePaths[] = $path . 'Themed' . DS . $this->theme . DS . 'Plugin' . DS . $plugin . DS;
+						$themePaths[] = $path . 'Themed' . DS . $theme . DS . 'Plugin' . DS . $plugin . DS;
 					}
-					$themePaths[] = $path . 'Themed' . DS . $this->theme . DS;
+					$themePaths[] = $path . 'Themed' . DS . $theme . DS;
 				}
 			}
 			$paths = array_merge($themePaths, $paths);