Add an integration test for when the last moderator leaves

tests/integration/features/bootstrap/FeatureContext.php

@@ -760,6 +760,20 @@ public function userDeletesRoom($user, $identifier, $statusCode, $apiVersion = '
 		$this->assertStatusCode($this->response, $statusCode);
 	}
 
+	/**
+	 * @Then /^user "([^"]*)" gets room "([^"]*)" with (\d+)(?: \((v(1|2|3))\))?$/
+	 *
+	 * @param string $user
+	 * @param string $identifier
+	 * @param string $statusCode
+	 * @param string $apiVersion
+	 */
+	public function userGetsRoom($user, $identifier, $statusCode, $apiVersion = 'v1') {
+		$this->setCurrentUser($user);
+		$this->sendRequest('GET', '/apps/spreed/api/' . $apiVersion . '/room/' . self::$identifierToToken[$identifier]);
+		$this->assertStatusCode($this->response, $statusCode);
+	}
+
 	/**
 	 * @Then /^user "([^"]*)" renames room "([^"]*)" to "([^"]*)" with (\d+)(?: \((v(1|2|3))\))?$/
 	 *

tests/integration/features/conversation/remove-self.feature

@@ -31,6 +31,13 @@ Feature: public
     Then user "participant1" is participant of room "room"
     And user "participant2" is not participant of room "room"
 
+  Scenario: Last moderator removes the room from their room list
+    Given user "participant1" creates room "room"
+      | roomType | 3 |
+      | roomName | room |
+    When user "participant1" removes themselves from room "room" with 200
+    Then user "participant2" gets room "room" with 404 (v3)
+
   Scenario: User removes the room from their room list
     Given user "participant1" creates room "room"
       | roomType | 3 |