public void TestThreadSafety()
{
const ushort width = 80;
using (StringWriter stringWriter = new StringWriter())
using (FormatTextWriter formatTextWriter = new FormatTextWriter(
stringWriter,
width,
alignment: Alignment.Justify))
{
Stopwatch watch = Stopwatch.StartNew();
Parallel.For(
0,
1000,
new ParallelOptions {MaxDegreeOfParallelism = 8},
i => formatTextWriter.Write(FormatResources.ButIMustExplain));
watch.Stop();
Trace.WriteLine(watch.Elapsed.TotalMilliseconds);
Assert.AreEqual(50, formatTextWriter.Position);
string result = stringWriter.ToString();
string[] lines = result
.Split(new[] {Environment.NewLine}, StringSplitOptions.None);
// Check number of lines and maximum line length, if we have any race conditions we expect these to change.
Assert.AreEqual(12500, lines.Length);
Assert.AreEqual(width, lines.Select(l => l.Length).Max());
}
}
public void TestLayoutWriter()
{
const ushort width = 15;
using (StringWriter stringWriter = new StringWriter())
using (FormatTextWriter formatTextWriter = new FormatTextWriter(
stringWriter,
width,
alignment: Alignment.Justify))
{
formatTextWriter.Write("A short string that requires justification ");
formatTextWriter.Write("but is written in multiple steps ");
formatTextWriter.Write("whicher prevents any kind of justification on the resultant join points.");
string result = stringWriter.ToString();
Trace.WriteLine(result);
string[] lines = result
.Split(new[] { Environment.NewLine }, StringSplitOptions.None);
// Check number of lines and maximum line length, if we have any race conditions we expect these to change.
Assert.AreEqual(12, lines.Length);
Assert.AreEqual(width, lines.Select(l => l.Length).Max());
}
}
public void TestAutoPositioning()
{
using (StringWriter writer = new StringWriter())
using (FormatTextWriter fw = new FormatTextWriter(writer, 5))
{
fw.WriteLine();
Assert.AreEqual(0, fw.Position);
fw.WriteLine("12345");
Assert.AreEqual(0, fw.Position);
fw.Write("12345\r\n");
Assert.AreEqual(0, fw.Position);
fw.Write("1234\r\n");
Assert.AreEqual(0, fw.Position);
fw.Write("1234");
Assert.AreEqual(4, fw.Position);
fw.Write("123456");
Assert.AreEqual(1, fw.Position);
fw.Write("123456");
Assert.AreEqual(1, fw.Position);
fw.Write("12345\r\n1");
Assert.AreEqual(1, fw.Position);
}
}
