public void ThreadSafeStringWriterWritesLinesFromDifferentsTasksSeparately()
{
// Suppress the flow of parent context here becuase this test method will run in
// a task already and we don't want the existing async context to interfere with this.
using (ExecutionContext.SuppressFlow())
{
// String writer needs to be task aware to write output from different tasks
// into different output. The tasks below wait for each other to ensure
// we are mixing output from different tasks at the same time.
using (var stringWriter = new ThreadSafeStringWriter(CultureInfo.InvariantCulture, "output"))
{
var task1 = Task.Run(() =>
{
var timeout = Stopwatch.StartNew();
stringWriter.WriteLine("content1");
stringWriter.WriteLine("content1");
stringWriter.WriteLine("content1");
stringWriter.WriteLine("content1");
while (this.task2flag != true && timeout.Elapsed < TimeSpan.FromSeconds(5))
{
}
stringWriter.WriteLine("content1");
stringWriter.WriteLine("content1");
stringWriter.WriteLine("content1");
stringWriter.WriteLine("content1");
return(stringWriter.ToString());
});
var task2 = Task.Run(() =>
{
stringWriter.WriteLine("content2");
stringWriter.WriteLine("content2");
stringWriter.WriteLine("content2");
stringWriter.WriteLine("content2");
this.task2flag = true;
stringWriter.WriteLine("content2");
stringWriter.WriteLine("content2");
stringWriter.WriteLine("content2");
stringWriter.WriteLine("content2");
return(stringWriter.ToString());
});
var task2Output = task2.GetAwaiter().GetResult();
var task1Output = task1.GetAwaiter().GetResult();
// there was no output in the current task, the output should be empty
var content = stringWriter.ToString();
content.Should().BeNullOrWhiteSpace();
// task1 and task2 should output into their respective buckets
task1Output.Should().NotBeNullOrWhiteSpace();
task2Output.Should().NotBeNullOrWhiteSpace();
task1Output.Split(Environment.NewLine.ToCharArray(), StringSplitOptions.RemoveEmptyEntries).Should().OnlyContain(i => i == "content1").And.HaveCount(8);
task2Output.Split(Environment.NewLine.ToCharArray(), StringSplitOptions.RemoveEmptyEntries).Should().OnlyContain(i => i == "content2").And.HaveCount(8);
}
}
}
/// <summary>Runs executable with the provided arguments</summary>
/// <returns>The console output of this program</returns>
public ConsoleOutput Run(params string[] arguments)
{
lock (s_lock)
{
Console.Write($"{Command} ");
Console.WriteLine(string.Join(" ", arguments));
TextWriter consoleOut = Console.Out;
ThreadSafeStringWriter stringOut = new ThreadSafeStringWriter();
Console.SetOut(stringOut);
try
{
int exitCode = 0;
if (null == VoidMain)
{
exitCode = Main(arguments);
}
else
{
VoidMain(arguments);
}
ConsoleOutput consoleOutput = new ConsoleOutput()
{
ExitCode = exitCode,
Stdout = stringOut.ToString()
};
Console.Write(consoleOutput.Stdout);
return(consoleOutput);
}
finally
{
Console.SetOut(consoleOut);
}
}
}
public void ThreadSafeStringWriterWriteLineHasContentFromMultipleThreads()
{
using (var stringWriter = new ThreadSafeStringWriter(CultureInfo.InvariantCulture))
{
Action <string> action = (string x) =>
{
for (var i = 0; i < 100000; i++)
{
// Choose WriteLine since it calls the entire sequence:
// Write(string) -> Write(char[]) -> Write(char)
stringWriter.WriteLine(x);
}
};
var task1 = Task.Run(() => action("content1"));
var task2 = Task.Run(() => action("content2"));
task1.Wait();
task2.Wait();
// Validate that only whole lines are written, not a mix of random chars
foreach (var line in stringWriter.ToString().Split(new[] { Environment.NewLine }, StringSplitOptions.RemoveEmptyEntries))
{
Assert.IsTrue(line.Equals("content1") || line.Equals("content2"));
}
}
}
public void WriteWithMessageShouldWriteToStringWriterForNullCharacters()
{
var stringWriter = new ThreadSafeStringWriter(null, "test");
this.testContextImplementation = new TestContextImplementation(this.testMethod.Object, stringWriter, this.properties);
this.testContextImplementation.Write("1 Testing \0 write \0");
StringAssert.Contains(stringWriter.ToString(), "1 Testing \\0 write \\0");
}
public void WriteShouldWriteToStringWriter()
{
var stringWriter = new ThreadSafeStringWriter(null, "test");
this.testContextImplementation = new TestContextImplementation(this.testMethod.Object, stringWriter, this.properties);
this.testContextImplementation.Write("{0} Testing write", 1);
StringAssert.Contains(stringWriter.ToString(), "1 Testing write");
}
public void WriteWithMessageShouldWriteToStringWriterForReturnCharacters()
{
var stringWriter = new ThreadSafeStringWriter(null, "test");
this.testContextImplementation = new TestContextImplementation(this.testMethod.Object, stringWriter, this.properties);
this.testContextImplementation.Write("2 Testing write \n\r");
this.testContextImplementation.Write("3 Testing write\n\r");
StringAssert.Equals(stringWriter.ToString(), "2 Testing write 3 Testing write");
}
public void ClearDiagnosticMessagesShouldClearMessagesFromWriteLine()
{
var stringWriter = new ThreadSafeStringWriter(null, "test");
this.testContextImplementation = new TestContextImplementation(this.testMethod.Object, stringWriter, this.properties);
this.testContextImplementation.WriteLine("1 Testing write");
this.testContextImplementation.WriteLine("2 Its a happy day");
this.testContextImplementation.ClearDiagnosticMessages();
Assert.AreEqual(string.Empty, stringWriter.ToString());
}
public void ThreadSafeStringWriterWritesLinesIntoDifferentWritesSeparately()
{
// Suppress the flow of parent context here becuase this test method will run in
// a task already and we don't want the existing async context to interfere with this.
using (ExecutionContext.SuppressFlow())
{
// The string writer mixes output captured by different instances if they are in the same taks, or under the same task context
// and use the same output type. In the any of the "out" writers we should see all the output from the writers marked as "out"
// and in any of the debug writers we should see all "debug" output.
using (var stringWriter1 = new ThreadSafeStringWriter(CultureInfo.InvariantCulture, "out"))
{
using (var stringWriter2 = new ThreadSafeStringWriter(CultureInfo.InvariantCulture, "debug"))
{
using (var stringWriter3 = new ThreadSafeStringWriter(CultureInfo.InvariantCulture, "out"))
{
using (var stringWriter4 = new ThreadSafeStringWriter(CultureInfo.InvariantCulture, "debug"))
{
// Writing the data needs to run in a task, because that is how the writer is designed,
// because we always run test in a task, so we must not setup the parent context, otherwise
// it would capture output of all tests.
var result = Task.Run(() =>
{
stringWriter1.WriteLine("out");
stringWriter2.WriteLine("debug");
Task.Run(() =>
{
stringWriter3.WriteLine("out");
stringWriter4.WriteLine("debug");
}).GetAwaiter().GetResult();
return(new { Out = stringWriter1.ToString(), Debug = stringWriter2.ToString() });
}).GetAwaiter().GetResult();
// task1 and task2 should output into their respective buckets
result.Out.Should().NotBeNullOrWhiteSpace();
result.Debug.Should().NotBeNullOrWhiteSpace();
var output = result.Out.Split(Environment.NewLine.ToCharArray(), StringSplitOptions.RemoveEmptyEntries);
output.Should().OnlyContain(i => i == "out").And.HaveCount(2);
var debug = result.Debug.Split(Environment.NewLine.ToCharArray(), StringSplitOptions.RemoveEmptyEntries);
debug.Should().OnlyContain(i => i == "debug").And.HaveCount(2);
}
}
}
}
}
}
public void ThreadSafeStringWriterWriteLineHasContentFromMultipleThreads()
{
using (ExecutionContext.SuppressFlow())
{
using (var stringWriter = new ThreadSafeStringWriter(CultureInfo.InvariantCulture, "tst"))
{
Action <string> action = (string x) =>
{
var count = 10;
for (var i = 0; i < count; i++)
{
// Choose WriteLine since it calls the entire sequence:
// Write(string) -> Write(char[]) -> Write(char)
stringWriter.WriteLine(x);
}
};
var task1 = Task.Run(() =>
{
var timeout = Stopwatch.StartNew();
action("content1");
action("content1");
action("content1");
action("content1");
while (this.task2flag != true && timeout.Elapsed < TimeSpan.FromSeconds(5))
{
}
action("content1");
action("content1");
action("content1");
action("content1");
});
var task2 = Task.Run(() =>
{
action("content2");
action("content2");
action("content2");
action("content2");
this.task2flag = true;
action("content2");
action("content2");
action("content2");
action("content2");
});
task2.GetAwaiter().GetResult();
task1.GetAwaiter().GetResult();
var content = stringWriter.ToString();
content.Should().NotBeNullOrWhiteSpace();
// Validate that only whole lines are written, not a mix of random chars
var lines = content.Split(new[] { Environment.NewLine }, StringSplitOptions.RemoveEmptyEntries);
lines.Should().HaveCountGreaterThan(0);
foreach (var line in lines)
{
Assert.IsTrue(line.Equals("content1") || line.Equals("content2"));
}
}
}
}