APIXmlrpcTest::testInitSessionCredentials PHP Method

    public function testInitSessionCredentials()
    {
        $res = $this->doHttpRequest('initSession', ['login' => TU_USER, 'password' => TU_PASS]);
        $this->assertEquals(200, $res->getStatusCode());
        $data = xmlrpc_decode($res->getBody());
        $this->assertNotEquals(false, $data);
        $this->assertArrayHasKey('session_token', $data);
        return $data['session_token'];
    }