added tests to verify issue #16484

the case is to match all module names before a catch-all URL rule.
module routes should work with "module name only", "module
name+controller name" and "module/controller/action".

tests/framework/base/ModuleTest.php

@@ -147,6 +147,49 @@ class ModuleTest extends TestCase
         $route = 'very---complex---name---test';
         $this->assertNotInstanceOf(VeryComplexNameTestController::className(), $module->createControllerByID($route));
     }
+
+    public function testCreateController()
+    {
+        // app module has a submodule "base" which has two controllers: "default" and "other"
+        $module = new Module('app');
+        $module->setModule('base', new Module('base'));
+        $defaultController = ['class' => 'yii\web\Controller'];
+        $otherController = ['class' => 'yii\web\Controller'];
+        $module->getModule('base')->controllerMap = [
+            'default' => $defaultController,
+            'other' => $otherController,
+        ];
+
+        list($controller, $action) = $module->createController('base');
+        $this->assertSame('', $action);
+        $this->assertSame('base/default', $controller->uniqueId);
+
+        list($controller, $action) = $module->createController('base/default');
+        $this->assertSame('', $action);
+        $this->assertSame('base/default', $controller->uniqueId);
+
+        list($controller, $action) = $module->createController('base/other');
+        $this->assertSame('', $action);
+        $this->assertSame('base/other', $controller->uniqueId);
+
+        list($controller, $action) = $module->createController('base/default/index');
+        $this->assertSame('index', $action);
+        $this->assertSame('base/default', $controller->uniqueId);
+
+        list($controller, $action) = $module->createController('base/other/index');
+        $this->assertSame('index', $action);
+        $this->assertSame('base/other', $controller->uniqueId);
+
+        list($controller, $action) = $module->createController('base/other/someaction');
+        $this->assertSame('someaction', $action);
+        $this->assertSame('base/other', $controller->uniqueId);
+
+        $controller = $module->createController('bases/default/index');
+        $this->assertFalse($controller);
+
+        $controller = $module->createController('nocontroller');
+        $this->assertFalse($controller);
+    }
 }
 
 class TestModule extends \yii\base\Module

tests/framework/web/UrlManagerParseUrlTest.php

@@ -434,4 +434,32 @@ class UrlManagerParseUrlTest extends TestCase
             ]);
         }
     }
+
+    /**
+     * Test a scenario where catch-all rule is used at the end for a CMS but module names should use the module actions and controllers.
+     */
+    public function testModuleRoute()
+    {
+        $modules = 'user|my-admin';
+
+        $manager = $this->getUrlManager([
+            'rules' => [
+                "<module:$modules>" => '<module>',
+                "<module:$modules>/<controller>" => '<module>/<controller>',
+                "<module:$modules>/<controller>/<action>" => '<module>/<controller>/<action>',
+                '<url:[a-zA-Z0-9-/]+>' => 'site/index',
+            ],
+        ]);
+
+        $result = $manager->parseRequest($this->getRequest('user'));
+        $this->assertEquals(['user', []], $result);
+        $result = $manager->parseRequest($this->getRequest('user/somecontroller'));
+        $this->assertEquals(['user/somecontroller', []], $result);
+        $result = $manager->parseRequest($this->getRequest('user/somecontroller/someaction'));
+        $this->assertEquals(['user/somecontroller/someaction', []], $result);
+
+        $result = $manager->parseRequest($this->getRequest('users/somecontroller/someaction'));
+        $this->assertEquals(['site/index', ['url' => 'users/somecontroller/someaction']], $result);
+
+    }
 }