Unit Tests with Shouldly statement fail

Question

Since some days all my C# unit tests in Visual Studio running on my local machine are raising following TypeInitializationException when reaching the first Shouldly statement:

The type initializer for 'Shouldly.ShouldlyConfiguration' threw an exception

with the inner exception

Illegal characters in path

And a stack trace:

at System.IO.Path.CheckInvalidPathChars(String path, Boolean checkAdditional)
at System.IO.Path.Combine(String path1, String path2)
at Shouldly.Configuration.DiffTool.<>c__DisplayClass10_0.<GetFullPath>b__2(String path)
at System.Linq.Enumerable.<>c__DisplayClass7_0`3.<CombineSelectors>b__0(TSource x)
at System.Linq.Enumerable.WhereSelectArrayIterator`2.MoveNext()
at System.Linq.Enumerable.FirstOrDefault[TSource](IEnumerable`1 source, Func`2 predicate)
at Shouldly.Configuration.DiffTool.GetFullPath(String fileName)
at Shouldly.Configuration.DiffTool.Discover(String path)
at Shouldly.Configuration.DiffTool..ctor(String name, String path, ArgumentGenerator argGenerator)
at Shouldly.Configuration.KnownDiffTools..ctor()
at Shouldly.Configuration.KnownDiffTools..cctor()

There is a similar issue on https://github.com/shouldly/shouldly/issues/422 but my PATH Environment is correct.

I get the same error for any Unit Test Project Independent of the path.

Even for the simplest test as

  [TestClass]
  public class UnitTest2
  {
    [TestMethod]
    public void TestMethod1()
    {
      int i = 1;
      i.ShouldBe(1);
    }
  }

On other machines I cannot reproduce the issue for the same tests.

re-install nuget package. Has anything changed recently on the offending machine. Like OS update? — Nkosi, Apr 18 '17 at 15:31
@Nkosi I tried that. And I am using latest version. did not change something in OS... — StefanG, Apr 18 '17 at 15:43

score 0 · Accepted Answer · edited Apr 19 '17 at 14:05

0

Based on that stack trace, the path to your diff tool is not a valid path.

Shouldly retrieves all paths from the PATH variable and tries to "guess" the path to one of the pre-defined diff tools.

When one of the paths is invalid, this exception is raised. A solution is currently implmented. See https://github.com/shouldly/shouldly/pull/423

edited Apr 19 '17 at 14:05

StefanG

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answered Apr 18 '17 at 18:41

NP3

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I think that the path shouldly _uses_ to search, is not valid. But what parameter does it take? The path to Shouldly on my machine is valid. See https://github.com/shouldly/shouldly/blob/master/src/Shouldly/Configuration/DiffTool.cs – StefanG Apr 18 '17 at 21:04

Unit Tests with Shouldly statement fail

1 Answers1