PayPal\Test\Auth\OAuthTokenCredentialTest::testGetAccessToken PHP Method

    public function testGetAccessToken()
    {
        $cred = new OAuthTokenCredential(Constants::CLIENT_ID, Constants::CLIENT_SECRET);
        $this->assertEquals(Constants::CLIENT_ID, $cred->getClientId());
        $this->assertEquals(Constants::CLIENT_SECRET, $cred->getClientSecret());
        $config = PayPalConfigManager::getInstance()->getConfigHashmap();
        $token = $cred->getAccessToken($config);
        $this->assertNotNull($token);
        // Check that we get the same token when issuing a new call before token expiry
        $newToken = $cred->getAccessToken($config);
        $this->assertNotNull($newToken);
        $this->assertEquals($token, $newToken);
    }