public void SetParsedValue_SetValueAfterAddingMultipleValues_SetValueReplacesOtherValues()
{
MockHeaders headers = new MockHeaders();
headers.Add(knownHeader, rawPrefix + "1");
headers.TryAddWithoutValidation(knownHeader, rawPrefix + "2");
Assert.Equal(1, headers.Parser.TryParseValueCallCount);
headers.SetParsedValue(knownHeader, parsedPrefix + "3");
// Adding a parsed value, will trigger all raw values to be parsed.
Assert.Equal(2, headers.Parser.TryParseValueCallCount);
Assert.Equal(1, headers.GetValues(knownHeader).Count());
Assert.Equal(parsedPrefix + "3", headers.First().Value.ElementAt(0));
}