public void Regress_Mutation_1AShouldBeStripped()
{
Stream stream = StreamHelpers.StringToStream("x\x1Ay");
StreamMappedString s = new StreamMappedString(stream, false);
// Get the last character (which should be 'y' and not 0x1A).
Assert.AreEqual('y', s.GetAt(1));
}
public void Regress_Mutation_LastCharacterShouldBeNewLine()
{
Stream stream = StreamHelpers.StringToStream("A");
StreamMappedString s = new StreamMappedString(stream, false);
// Get the last character (which should be the appended newLine).
Assert.AreEqual('\xd', s.GetAt(1));
}
public void Regress_Mutation_BackingUpMoreThanOnePageWorks()
{
Stream stream = StreamHelpers.StringToStream("A" + new String('b', StreamMappedString.DefaultPageSize * 4));
StreamMappedString s = new StreamMappedString(stream, false);
// Get the last character...
s.GetAt(StreamMappedString.DefaultPageSize * 4);
// ...now get the first character.
Assert.AreEqual('A', s.GetAt(0));
}
public void Regress_Mutation_RetrievingFromLastPageWorks()
{
Stream stream = StreamHelpers.StringToStream("A" + new String('b', StreamMappedString.DefaultPageSize));
StreamMappedString s = new StreamMappedString(stream, false);
// Get the last character...
s.GetAt(StreamMappedString.DefaultPageSize);
// ...now get the first character (which should be saved on lastPage).
Assert.AreEqual('A', s.GetAt(0));
}
public void Regress_Mutation_ForceANSIWorks_RelatedTo172107()
{
// Can't embed the 'Ã' directly because the string is Unicode already and the Unicode<-->ANSI transform
// isn't bidirectional.
MemoryStream sourcesStream = (MemoryStream)StreamHelpers.StringToStream("namespace d?a { class Class {} }");
// Instead, directly write the ANSI character into the memory buffer.
sourcesStream.Seek(11, SeekOrigin.Begin);
sourcesStream.WriteByte(0xc3); // Plug the 'Ã' in
sourcesStream.Seek(0, SeekOrigin.Begin);
// Should not throw an exception because we force ANSI.
StreamMappedString s = new StreamMappedString(sourcesStream, /* forceANSI */ true);
s.GetAt(11);
}
public void Regress_Mutation_ReadingCharactersForwardOnlyShouldCauseNoAdditionalResets()
{
RestartCountingStream stream = new RestartCountingStream(StreamHelpers.StringToStream("abcdefg"));
StreamMappedString s = new StreamMappedString(stream, false);
// Get a few characters.
s.GetAt(0);
s.GetAt(1);
s.GetAt(2);
s.GetAt(3);
s.GetAt(4);
// There should be exactly one reset for this.
Assert.AreEqual(0, stream.ResetCount);
}
public void Regress_Mutation_RequestPageWellPastEnd()
{
Stream stream = StreamHelpers.StringToStream(new String('x', StreamMappedString.DefaultPageSize * 2));
StreamMappedString s = new StreamMappedString(stream, false);
// Read something way past the end. This should result in a range exception.
s.GetAt(1000000);
}
public void Regress_Mutation_FirstCharacterOnPagePastEndDoesntExist()
{
Stream stream = StreamHelpers.StringToStream("abc");
StreamMappedString s = new StreamMappedString(stream, false, 256);
s.GetAt(256);
}
public void Regress_Codereview_RequestPageWellPastEnd()
{
Stream stream = StreamHelpers.StringToStream("x");
StreamMappedString s = new StreamMappedString(stream, false);
// Read something way past the end. This should result in a range exception.
s.GetAt(1000000);
}
public void Regress_Mutation_SubstringReadPastEndThrowsException()
{
Assert.Throws<ArgumentOutOfRangeException>(() =>
{
Stream stream = StreamHelpers.StringToStream("abcdefg");
StreamMappedString s = new StreamMappedString(stream, false);
Assert.Equal(String.Empty, s.Substring(1, 30));
}
);
}
public void Regress_Mutation_NewLineGetsAppendedAcrossPageBoundaries()
{
Stream stream = StreamHelpers.StringToStream(new String('x', StreamMappedString.DefaultPageSize));
StreamMappedString s = new StreamMappedString(stream, false);
// Get the last character (which should be '\xd').
Assert.AreEqual('\xd', s.GetAt(StreamMappedString.DefaultPageSize));
}
public void Regress_Mutation_FirstCharacterOnPagePastEndDoesntExist()
{
Assert.Throws<ArgumentOutOfRangeException>(() =>
{
Stream stream = StreamHelpers.StringToStream("abc");
StreamMappedString s = new StreamMappedString(stream, false, 256);
s.GetAt(256);
}
);
}
public void Regress_Mutation_UnicodeIsDetected()
{
Stream stream = StreamHelpers.StringToStream("\u00C3ngelo's Steak House", System.Text.Encoding.UTF32);
StreamMappedString s = new StreamMappedString(stream, false);
// This won't read correctly with ANSI encoding.
Assert.AreEqual('\u00C3', s.GetAt(0));
}
public void Regress_Mutation_SubstringOnLastPageWorks()
{
Stream stream = StreamHelpers.StringToStream("abcdefg" + new String('x', StreamMappedString.DefaultPageSize));
StreamMappedString s = new StreamMappedString(stream, false);
// Move to the second page
s.GetAt(StreamMappedString.DefaultPageSize);
// Get a string from the firstPage
Assert.AreEqual("abc", s.Substring(0, 3));
}
public void Regress_Mutation_SubstringReadPastEndThrowsException()
{
Stream stream = StreamHelpers.StringToStream("abcdefg");
StreamMappedString s = new StreamMappedString(stream, false);
Assert.AreEqual(String.Empty, s.Substring(1, 30));
}
public void Regress_Mutation_SubstringWorksFromPriorPage()
{
Stream stream = StreamHelpers.StringToStream("abcxdef");
StreamMappedString s = new StreamMappedString(stream, false, 7);
// Move to the last page
s.GetAt(7);
// And then extract a string from the beginning page.
Assert.AreEqual("abcxdef", s.Substring(0, 7));
}
public void Regress_Mutation_SubstringWorksWithPageSizeOne()
{
Stream stream = StreamHelpers.StringToStream("abcdefg");
StreamMappedString s = new StreamMappedString(stream, false, /* pageSize */ 1);
Assert.AreEqual("bcd", s.Substring(1, 3));
}
internal TokenCharReader(Stream binaryStream, bool forceANSI)
{
this.Reset();
this.sources = new StreamMappedString(binaryStream, forceANSI);
}
public void Regress_Mutation_IsPastEndWorks()
{
RestartCountingStream stream = new RestartCountingStream(StreamHelpers.StringToStream("a"));
StreamMappedString s = new StreamMappedString(stream, false);
// There's only one character, so IsPastEnd(2) should be true.
Assert.IsTrue(s.IsPastEnd(2)); // <-- 2 required because of extra \xd added.
}
public void Regress_Mutation_MinimizePagesAllocated()
{
Stream stream = StreamHelpers.StringToStream("a" + new String('x', StreamMappedString.DefaultPageSize * 2));
StreamMappedString s = new StreamMappedString(stream, false);
// Get a few characters.
s.GetAt(0);
s.GetAt(StreamMappedString.DefaultPageSize);
s.GetAt(StreamMappedString.DefaultPageSize * 2);
// Even though three pages were read, only two allocations should have occurred.
Assert.AreEqual(2, s.PagesAllocated);
}
public void Regress_Mutation_MultiplePagesOf1AShouldBeStripped()
{
Stream stream = StreamHelpers.StringToStream(new String('\x1a', StreamMappedString.DefaultPageSize * 2) + "x");
StreamMappedString s = new StreamMappedString(stream, false);
// Get the last character (which should be 'x' and not 0x1A).
Assert.AreEqual('x', s.GetAt(0));
}
public void Regress_Mutation_1DNotAppendedIfAlreadyThere()
{
RestartCountingStream stream = new RestartCountingStream(StreamHelpers.StringToStream("\xd"));
StreamMappedString s = new StreamMappedString(stream, false);
// There's only one \x1d so IsPastEnd(1) should be true.
Assert.IsTrue(s.IsPastEnd(1));
}
internal TokenCharReader(Stream binaryStream, bool forceANSI)
{
Reset();
_sources = new StreamMappedString(binaryStream, forceANSI);
}
public void Regress_Mutation_SubstringWorks()
{
Stream stream = StreamHelpers.StringToStream("abcdefg");
StreamMappedString s = new StreamMappedString(stream, false);
Assert.Equal("bcd", s.Substring(1, 3));
}