[full-ci] [tests-only] Added api test for delete user using graph API (#5102)

* Added api test for delete user using graph API

* Added scenario, admin user tries to delete another admin user

* Added scenario, delete user with username having different case

* Addressed reviews

tests/acceptance/features/bootstrap/GraphContext.php

@@ -217,17 +217,20 @@ class GraphContext implements Context {
 	 * sends a request to delete a user using the Graph API
 	 *
 	 * @param string $user username is used as the id
+	 * @param string|null $byUser
 	 *
 	 * @return void
 	 * @throws GuzzleException
 	 */
-	public function adminDeletesUserUsingTheGraphApi(string $user): void {
+	public function adminDeletesUserUsingTheGraphApi(string $user, ?string $byUser = null): void {
+		$credentials = $this->getAdminOrUserCredentials($byUser);
+
 		$this->featureContext->setResponse(
 			GraphHelper::deleteUser(
 				$this->featureContext->getBaseUrl(),
 				$this->featureContext->getStepLineRef(),
-				$this->featureContext->getAdminUsername(),
-				$this->featureContext->getAdminPassword(),
+				$credentials["username"],
+				$credentials["password"],
 				$user
 			)
 		);
@@ -255,6 +258,20 @@ class GraphContext implements Context {
 		);
 	}
 
+	/**
+	 * @When /^the user "([^"]*)" deletes a user "([^"]*)" using the Graph API$/
+	 *
+	 * @param string $byUser
+	 * @param string $user
+	 *
+	 * @return void
+	 * @throws Exception
+	 * @throws GuzzleException
+	 */
+	public function theUserDeletesAUserUsingTheGraphAPI(string $byUser, string $user): void {
+		$this->adminDeletesUserUsingTheGraphApi($user, $byUser);
+	}
+
 	/**
 	 * @param string $user
 	 * @param string $group
@@ -566,6 +583,28 @@ class GraphContext implements Context {
 		$this->featureContext->setResponse($response);
 	}
 
+	/**
+	 * @Given /^the user "([^"]*)" has created a new user using the Graph API with the following settings:$/
+	 *
+	 * @param string $user
+	 * @param TableNode $table
+	 *
+	 * @return void
+	 * @throws Exception|GuzzleException
+	 */
+	public function theUserHasCreatedANewUserUsingGraphapiWithTheFollowingSettings(string $user, TableNode $table): void {
+		$this->theUserCreatesNewUser(
+			$user,
+			$table
+		);
+		$rows = $table->getRowsHash();
+		$response = $this->featureContext->getResponse();
+
+		if ($response->getStatusCode() !== 200) {
+			$this->throwHttpException($response, "Could not create user '$rows[userName]'");
+		}
+	}
+
 	/**
 	 * adds a user to a group
 	 *