public void FillObject_Raises_Exception_When_ParameterIsNull()
{
var ex1 = Assert.Throws <ArgumentNullException>(() =>
DictionaryExtensions.FillObject(null, (object)null));
var ex2 = Assert.Throws <ArgumentNullException>(() =>
new Dictionary <string, string>().FillObject((object)null));
Assert.Equal("dictionary", ex1.ParamName);
Assert.Equal("objectInstance", ex2.ParamName);
}