Port to Xunit

src/tck/Reactive.Streams.TCK.Tests/Support/TCKVerificationSupport.cs

@@ -42,7 +42,7 @@ public void RequireTestFailure(Action throwingRun, string messagePart)
         }
 
         /// <summary>
-        ///  Runs given code block and expects it fail with an <see cref="IgnoreException"/>
+        ///  Runs given code block and expects it fail with an <see cref="SkipException"/>
         /// </summary>
         /// <param name="throwingRun">encapsulates test case which we expect to be skipped</param>
         /// <param name="messagePart">the exception failing the test (inside the run parameter) must contain this message part in one of it's causes</param>
@@ -52,7 +52,7 @@ public void RequireTestSkip(Action throwingRun, string messagePart)
             {
                 throwingRun();
             }
-            catch (IgnoreException ignore)
+            catch (SkipException ignore)
             {
                 if(ignore.Message.Contains(messagePart))
                     return;

src/tck/Reactive.Streams.TCK/PublisherVerification.cs

@@ -353,7 +353,7 @@ public void Optional_spec104_mustSignalOnErrorWhenFails()
                     _environment.VerifyNoAsyncErrors();
                 });
             }
-            catch (IgnoreException)
+            catch (SkipException)
             {
                 throw;
             }

src/tck/Reactive.Streams.TCK/SubscriberBlackboxVerification.cs

@@ -314,7 +314,7 @@ public void Required_spec213_blackbox_onNext_mustThrowNullPointerExceptionWhenPa
             {
                 var element = default(T);
                 if(element != null)
-                    throw new IgnoreException("Can't verify behavior for value types");
+                    throw new SkipException("Can't verify behavior for value types");
 
                 var subscriber = CreateSubscriber();
                 var gotNpe = false;

src/tck/Reactive.Streams.TCK/SubscriberWhiteboxVerification.cs

@@ -332,7 +332,7 @@ public void Required_spec213_onNext_mustThrowNullPointerExceptionWhenParametersA
             {
                 var element = default(T);
                 if (element != null)
-                    throw new IgnoreException("Can't verify behavior for value types");
+                    throw new SkipException("Can't verify behavior for value types");
 
                 var subscriber = stage.Sub;
                 var gotNpe = false;