public void AppendOrUpdateQueryStringTest()
{
// No existing querystring
var actual = Urls.AppendOrUpdateQueryString("http://www.test.com", "testKey", "testValue");
Assert.AreEqual("http://www.test.com?testKey=testValue", actual);
actual = Urls.AppendOrUpdateQueryString("http://www.test.com/", "testKey", "testValue");
Assert.AreEqual("http://www.test.com/?testKey=testValue", actual);
// Existing QS but differing keys
actual = Urls.AppendOrUpdateQueryString("http://www.test.com?existingKey=existingValue", "testKey", "testValue");
Assert.AreEqual("http://www.test.com?existingKey=existingValue&testKey=testValue", actual);
actual = Urls.AppendOrUpdateQueryString("http://www.test.com?existingKey=existingValue&existingKey1=existingValue1", "testKey", "testValue");
Assert.AreEqual("http://www.test.com?existingKey=existingValue&existingKey1=existingValue1&testKey=testValue", actual);
// Existing QS with same key
actual = Urls.AppendOrUpdateQueryString("http://www.test.com/?testKey=oldValue", "testKey", "testValue");
Assert.AreEqual("http://www.test.com/?testKey=testValue", actual);
// Same key mixed with other keys
actual = Urls.AppendOrUpdateQueryString("http://www.test.com/?existingKey=existingValue&testKey=oldValue", "testKey", "testValue");
Assert.AreEqual("http://www.test.com/?existingKey=existingValue&testKey=testValue", actual);
actual = Urls.AppendOrUpdateQueryString("http://www.test.com/?testKey=oldValue&existingKey=existingValue", "testKey", "testValue");
Assert.AreEqual("http://www.test.com/?testKey=testValue&existingKey=existingValue", actual);
}
