public void Index_StartState_ReturnsNegOne()
{
using (var scanner = new TextReaderStream(TextReader.Null))
{
Assert.Equal(-1, scanner.Index);
}
}
public void Column_StartState_ReturnsNegOne()
{
using (var scanner = new TextReaderStream(TextReader.Null))
{
Assert.Equal(0, scanner.Column);
}
}
public void IsCompleted_NullReader_ReturnsFalse()
{
using (var scanner = new TextReaderStream(TextReader.Null))
{
Assert.Equal(true, scanner.IsCompleted);
}
}
public void Pop_NullReader_ReturnsNullChar()
{
using (var scanner = new TextReaderStream(TextReader.Null))
{
Assert.Equal('\0', scanner.Pop());
}
}
public void Pop_NullReader_ReturnsEmptySequence()
{
using (var scanner = new TextReaderStream(TextReader.Null))
{
var buffer = new StringBuilder();
while (!scanner.IsCompleted)
{
buffer.Append(scanner.Pop());
}
Assert.Equal(String.Empty, buffer.ToString());
}
}
public void Peek_LongString_ReturnsSameAsPop()
{
const string input = "0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ";
using (var scanner = new TextReaderStream(new StringReader(input)))
{
while (!scanner.IsCompleted)
{
char ch = scanner.Peek();
Assert.Equal(scanner.Pop(), ch);
}
Assert.Equal(true, scanner.IsCompleted);
}
}
public void Pop_UnicodeSequence_ReturnsSameSequence()
{
const string input = "私が日本語を話すことはありません。";
using (var scanner = new TextReaderStream(new StringReader(input)))
{
var buffer = new StringBuilder();
while (!scanner.IsCompleted)
{
buffer.Append(scanner.Pop());
}
Assert.Equal(input, buffer.ToString());
}
}
public void Pop_EscapedSequence_ReturnsSameSequence()
{
const string input = @"""\\\b\f\n\r\t\u0123\u4567\u89AB\uCDEF\uabcd\uef4A\""""";
using (var scanner = new TextReaderStream(new StringReader(input)))
{
var buffer = new StringBuilder();
while (!scanner.IsCompleted)
{
buffer.Append(scanner.Pop());
}
Assert.Equal(input, buffer.ToString());
}
}
public void Pop_LongSequence_ReturnsSameSequence()
{
const string input = "0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ";
using (var scanner = new TextReaderStream(new StringReader(input)))
{
var buffer = new StringBuilder();
while (!scanner.IsCompleted)
{
buffer.Append(scanner.Pop());
}
Assert.Equal(input, buffer.ToString());
}
}
public void Column_MultilineString_CountsCorrectNumberOfColumns()
{
const string input = @"Line one
Line two
Line three
Line Four";
using (var scanner = new TextReaderStream(new StringReader(input)))
{
while (!scanner.IsCompleted)
{
scanner.Pop();
}
Assert.Equal(9, scanner.Column);
}
}
public void Index_MultilineString_CountsCorrectNumberOfChars()
{
const string input = @"Line one
Line two
Line three
Line Four";
using (var scanner = new TextReaderStream(new StringReader(input)))
{
long i;
for (i = 0; !scanner.IsCompleted; i++)
{
scanner.Pop();
Assert.Equal(i, scanner.Index);
}
Assert.Equal(i - 1, scanner.Index);
}
}
