public void TestJoinerClearClearsString()
{
var joiner = new StringJoiner("");
joiner.Append("a");
joiner.Clear();
Assert.AreEqual(string.Empty, joiner.ToString());
}
public void TestJoinerDoesntThrowsOnClearIfDefaultCtor()
{
var joiner = new StringJoiner();
Assert.DoesNotThrow(() => joiner.Clear());
}