fun with DNX and FluentAssertions

output.txt

C:\git\slackist\Slackist.Tests [master ↑ +0 ~2 -0 !]> dnx test -method Tests.CanConnectToSlack
xUnit.net DNX Runner (64-bit DNXCore 5.0)
  Discovering: Slackist.Tests
  Discovered:  Slackist.Tests
  Starting:    Slackist.Tests
    Tests.CanConnectToSlack [FAIL]
      Expected string not to be <null> because we need an API token to connect to slack.
      Stack Trace:
        C:\projects\fluentassertions-vf06b\Src\Shared\Execution\LateBoundTestFramework.cs(26,0): at FluentAssertions.Execution.LateBoundTestFramework.Throw(String message)
        C:\projects\fluentassertions-vf06b\Src\Core\Execution\AssertionScope.cs(197,0): at FluentAssertions.Execution.AssertionScope.FailWith(String message, Object[] args)
        C:\projects\fluentassertions-vf06b\Src\Core\Primitives\ReferenceTypeAssertions.cs(58,0): at FluentAssertions.Primitives.ReferenceTypeAssertions`2.NotBeNull(String because, Object[] reasonArgs)
        C:\git\slackist\Slackist.Tests\BasicTests.cs(30,0): at Tests.<CanConnectToSlack>d__1.MoveNext()
        --- End of stack trace from previous location where exception was thrown ---
           at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
           at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
        --- End of stack trace from previous location where exception was thrown ---
           at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
           at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
        --- End of stack trace from previous location where exception was thrown ---
           at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
           at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
  Finished:    Slackist.Tests
=== TEST EXECUTION SUMMARY ===
   Slackist.Tests  Total: 1, Errors: 0, Failed: 1, Skipped: 0, Time: 0.125s

test.cs

class Tests
{
    [Fact]
    public async Task CanConnectToSlack()
    {
        var cts = new CancellationTokenSource();
        var token = cts.Token;
        // TODO LATER: some config system
        var slackApiToken = Environment.GetEnvironmentVariable("SLACK_TOKEN");
        slackApiToken.Should().NotBeNull("we need an API token to connect to slack");
    }
}