[JUnit] fireTestAssumptionFailed only for violated assumptions.

* Extract Runtime.isAssumptionViolated from Runtime.isPending.
* Use Runtime.isAssumptionViolated as the condition for
  fireTestAssumptionFailed

Author: brasmusson

core/src/main/java/cucumber/runtime/Runtime.java

@@ -33,13 +33,13 @@
  */
 public class Runtime {
 
-    private static final String[] PENDING_EXCEPTIONS = {
+    private static final String[] ASSUMPTION_VIOLATED_EXCEPTIONS = {
             "org.junit.AssumptionViolatedException",
             "org.junit.internal.AssumptionViolatedException"
     };
 
     static {
-        Arrays.sort(PENDING_EXCEPTIONS);
+        Arrays.sort(ASSUMPTION_VIOLATED_EXCEPTIONS);
     }
 
     private static final byte ERRORS = 0x1;
@@ -236,7 +236,14 @@ public static boolean isPending(Throwable t) {
         if (t == null) {
             return false;
         }
-        return t.getClass().isAnnotationPresent(Pending.class) || Arrays.binarySearch(PENDING_EXCEPTIONS, t.getClass().getName()) >= 0;
+        return t.getClass().isAnnotationPresent(Pending.class) || isAssumptionViolated(t);
+    }
+
+    public static boolean isAssumptionViolated(Throwable t) {
+        if (t == null) {
+            return false;
+        }
+        return Arrays.binarySearch(ASSUMPTION_VIOLATED_EXCEPTIONS, t.getClass().getName()) >= 0;
     }
 
     private void addStepToCounterAndResult(Result result) {

junit/src/main/java/cucumber/runtime/junit/JUnitReporter.java

@@ -13,6 +13,7 @@
 import org.junit.runner.notification.RunNotifier;
 import org.junit.runners.model.MultipleFailureException;
 
+import static cucumber.runtime.Runtime.isAssumptionViolated;
 import static cucumber.runtime.Runtime.isPending;
 
 public class JUnitReporter {
@@ -202,7 +203,7 @@ static class EachTestNotifier implements TestNotifier {
         public void addFailure(Throwable targetException) {
             if (targetException instanceof MultipleFailureException) {
                 addMultipleFailureException((MultipleFailureException) targetException);
-            } else if (isPending(targetException)) {
+            } else if (isAssumptionViolated(targetException)) {
                 addFailedAssumption(targetException);
             } else {
                 notifier.fireTestFailure(new Failure(description, targetException));