Increase test coverage

Author: Ndiritu

tests/Authentication/GraphPhpLeagueAccessTokenProviderTest.php

@@ -2,9 +2,14 @@
 
 namespace Microsoft\Graph\Core\Test\Authentication;
 
+use GuzzleHttp\Client;
+use GuzzleHttp\Handler\MockHandler;
+use GuzzleHttp\Psr7\Request;
+use GuzzleHttp\Psr7\Response;
 use League\OAuth2\Client\Token\AccessToken;
 use Microsoft\Graph\Core\Authentication\GraphPhpLeagueAccessTokenProvider;
 use Microsoft\Graph\Core\NationalCloud;
+use Microsoft\Kiota\Authentication\Cache\InMemoryAccessTokenCache;
 use Microsoft\Kiota\Authentication\Oauth\ClientCredentialContext;
 use PHPUnit\Framework\TestCase;
 
@@ -44,4 +49,24 @@ public function testCorrectOAuthEndpointsSet(): void
         $this->assertEquals("$baseUrl/tenant/oauth2/v2.0/authorize", $tokenProvider->getOauthProvider()->getBaseAuthorizationUrl());
     }
 
+    public function testCreateWithCache(): void
+    {
+        $tokenRequestContext = new ClientCredentialContext('tenant', 'clientId', 'secret');
+        $cache = new InMemoryAccessTokenCache();
+        $tokenProvider = GraphPhpLeagueAccessTokenProvider::createWithCache($cache, $tokenRequestContext, ['https://graph.microsoft.com/.default']);
+        $mockResponses = [
+            function (Request $request) use ($tokenRequestContext) {
+                parse_str($request->getBody()->getContents(), $requestBodyMap);
+                $expectedBody = array_merge($tokenRequestContext->getParams(), [
+                    'scope' => 'https://graph.microsoft.com/.default'
+                ]);
+                $this->assertEquals($expectedBody, $requestBodyMap);
+                return new Response(200, [], json_encode(['access_token' => 'xyz', 'expires_in' => 1]));
+            },
+        ];
+        $tokenProvider->getOauthProvider()->setHttpClient(new Client(['handler' => new MockHandler($mockResponses)]));
+        $tokenProvider->getAuthorizationTokenAsync('https://graph.microsoft.com/me');
+        $this->assertEquals('xyz', $cache->getTokenWithContext($tokenRequestContext)->getToken());
+    }
+
 }