Try this code example:
namespace Testing
{
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using NUnit.Framework.Constraints;
using NUnit.Framework;
using NUnit.Core.Extensions;
using System.Configuration;
using System.IO;
using System.Reflection;
using OpenQA.Selenium.Interactions;
using OpenQA.Selenium;
using Syncfusion.UnitTesting.Framework;
using OpenQA.Selenium.Remote;
using System.Threading;
using OpenQA.Selenium.Support.UI;
using System.Collections;
using OpenQA.Selenium.Firefox;
using System.Diagnostics;
using System.Globalization;
using System.Drawing;
using SanityTesting.AccordionFluent;
using System.Windows.Forms;
[TestFixture("Firefox")]
public class TestClass : NUnitUtil
{
string activeBrowser;
public TestClass(string browser)
{
FirefoxDriverService service = FirefoxDriverService.CreateDefaultService(@"C:\Drivers");
service.FirefoxBinaryPath = @"C:\Program Files (x86)\Mozilla Firefox\firefox.exe";
System.Environment.SetEnvironmentVariable("webdriver.gecko.driver", "C:\\Drivers\\geckodriver.exe");
driver = new FirefoxDriver(service);
activeBrowser = browser;
}
[TestFixtureTearDown]
public void quitDriver()
{
driver.Quit();
}
[Test)]
[Category("Sanity")]
public void Test1(string url, int time)
{
//your test code//
}
}
I think You are missing setup of driver.
try this example, hope it helps,