public void ContainsKeyFailsWithNullCollection() { var e = Assert.Throws <ArgumentNullException>(() => NameValueCollectionExtensions.ContainsKey(null, null)); Assert.Equal("collection", e.ParamName); }
public void WhenSourceIsNull_ThenThrowException() { Assert.Throws <ArgumentNullException>(() => NameValueCollectionExtensions.ContainsKey(null, "key1")); }