public void TrimRemovesLeadingAndTrailingWhiteSpace(InterningTestData.TestDatum datum)
{
SpanBasedStringBuilder stringBuilder = MakeSpanBasedStringBuilder(datum);
stringBuilder.Trim();
new InternableString(stringBuilder).ExpensiveConvertToString().ShouldBe(datum.ToString().Trim());
}
public void ClearRemovesAllCharacters(InterningTestData.TestDatum datum)
{
SpanBasedStringBuilder stringBuilder = MakeSpanBasedStringBuilder(datum);
stringBuilder.Clear();
stringBuilder.Length.ShouldBe(0);
stringBuilder.GetEnumerator().MoveNext().ShouldBeFalse();
}
public void EnumeratorEnumeratesCharacters(InterningTestData.TestDatum datum)
{
SpanBasedStringBuilder stringBuilder = MakeSpanBasedStringBuilder(datum);
int index = 0;
foreach (char ch in stringBuilder)
{
ch.ShouldBe(datum[index]);
index++;
}
}
public void EqualsReturnsExpectedValue(InterningTestData.TestDatum datum)
{
InternableString internableString = new InternableString(MakeSpanBasedStringBuilder(datum));
internableString.Equals(string.Empty).ShouldBe(internableString.Length == 0);
string substr = datum.Fragments[0] ?? string.Empty;
internableString.Equals(substr).ShouldBe(substr.Length == internableString.Length);
if (datum.Fragments.Length > 1)
{
substr += datum.Fragments[1];
internableString.Equals(substr).ShouldBe(substr.Length == internableString.Length);
internableString.Equals(datum.ToString()).ShouldBeTrue();
}
internableString.Equals("Things").ShouldBeFalse();
}
private SpanBasedStringBuilder MakeSpanBasedStringBuilder(InterningTestData.TestDatum datum, bool appendSubStrings = false)
{
bool wrapFirstFragment = datum.Fragments.Length > 0 && datum.Fragments[0] != null;
SpanBasedStringBuilder stringBuilder = wrapFirstFragment
? new SpanBasedStringBuilder(datum.Fragments[0])
: new SpanBasedStringBuilder();
for (int i = 1; i < datum.Fragments.Length; i++)
{
if (appendSubStrings)
{
int index = datum.Fragments[i].Length / 2;
stringBuilder.Append(datum.Fragments[i], 0, index);
stringBuilder.Append(datum.Fragments[i], index, datum.Fragments[i].Length - index);
}
else
{
stringBuilder.Append(datum.Fragments[i]);
}
}
return(stringBuilder);
}
public void LengthReturnsLength(InterningTestData.TestDatum datum)
{
MakeSpanBasedStringBuilder(datum).Length.ShouldBe(datum.Length);
}
public void AppendAppendsSubstring(InterningTestData.TestDatum datum)
{
SpanBasedStringBuilder stringBuilder = MakeSpanBasedStringBuilder(datum, true);
new InternableString(stringBuilder).ExpensiveConvertToString().ShouldBe(datum.ToString());
}