Reduce redundancy concerning failures in @AfterAll-methods

#433

junit-jupiter-migration-support/src/test/java/org/junit/jupiter/migrationsupport/rules/EnableRuleMigrationSupportWithBothRuleTypesTests.java

@@ -10,6 +10,8 @@
 
 package org.junit.jupiter.migrationsupport.rules;
 
+import static org.junit.jupiter.migrationsupport.rules.FailAfterAllHelper.fail;
+
 import org.junit.Rule;
 import org.junit.jupiter.api.AfterAll;
 import org.junit.jupiter.api.Test;
@@ -63,9 +65,4 @@ static void afterMethodsOfBothRulesWereExecuted() {
 			fail();
 	}
 
-	static void fail() {
-		//hack: use this blacklisted exception to fail the build, all others would be swallowed...
-		throw new OutOfMemoryError("a postcondition was violated");
-	}
-
 }

junit-jupiter-migration-support/src/test/java/org/junit/jupiter/migrationsupport/rules/ExternalResourceSupportForMixedMethodAndFieldRulesTests.java

@@ -11,6 +11,7 @@
 package org.junit.jupiter.migrationsupport.rules;
 
 import static org.junit.jupiter.api.Assertions.assertEquals;
+import static org.junit.jupiter.migrationsupport.rules.FailAfterAllHelper.fail;
 
 import java.util.ArrayList;
 import java.util.Arrays;
@@ -84,9 +85,4 @@ static void afterMethodsOfBothRulesWereExecuted() {
 			fail();
 	}
 
-	static void fail() {
-		//hack: use this blacklisted exception to fail the build, all others would be swallowed...
-		throw new OutOfMemoryError("a postcondition was violated");
-	}
-
 }

junit-jupiter-migration-support/src/test/java/org/junit/jupiter/migrationsupport/rules/ExternalResourceSupportForMultipleFieldRulesTests.java

@@ -11,6 +11,7 @@
 package org.junit.jupiter.migrationsupport.rules;
 
 import static org.junit.jupiter.api.Assertions.assertTrue;
+import static org.junit.jupiter.migrationsupport.rules.FailAfterAllHelper.fail;
 
 import org.junit.Rule;
 import org.junit.jupiter.api.AfterAll;
@@ -67,9 +68,4 @@ static void afterMethodsOfBothRulesWereExecuted() {
 			fail();
 	}
 
-	static void fail() {
-		//hack: use this blacklisted exception to fail the build, all others would be swallowed...
-		throw new OutOfMemoryError("a postcondition was violated");
-	}
-
 }

junit-jupiter-migration-support/src/test/java/org/junit/jupiter/migrationsupport/rules/ExternalResourceSupportForMultipleMethodRulesTests.java

@@ -10,6 +10,8 @@
 
 package org.junit.jupiter.migrationsupport.rules;
 
+import static org.junit.jupiter.migrationsupport.rules.FailAfterAllHelper.fail;
+
 import org.junit.Rule;
 import org.junit.jupiter.api.AfterAll;
 import org.junit.jupiter.api.Test;
@@ -73,9 +75,4 @@ static void afterMethodsOfBothRulesWereExecuted() {
 			fail();
 	}
 
-	static void fail() {
-		//hack: use this blacklisted exception to fail the build, all others would be swallowed...
-		throw new OutOfMemoryError("a postcondition was violated");
-	}
-
 }

junit-jupiter-migration-support/src/test/java/org/junit/jupiter/migrationsupport/rules/FailAfterAllHelper.java

@@ -0,0 +1,20 @@
+/*
+ * Copyright 2015-2016 the original author or authors.
+ *
+ * All rights reserved. This program and the accompanying materials are
+ * made available under the terms of the Eclipse Public License v1.0 which
+ * accompanies this distribution and is available at
+ *
+ * http://www.eclipse.org/legal/epl-v10.html
+ */
+
+package org.junit.jupiter.migrationsupport.rules;
+
+class FailAfterAllHelper {
+
+	static void fail() {
+		//hack: use this blacklisted exception to fail the build, all others would be swallowed...
+		throw new OutOfMemoryError("a postcondition was violated");
+	}
+
+}

junit-jupiter-migration-support/src/test/java/org/junit/jupiter/migrationsupport/rules/VerifierSupportForMixedMethodAndFieldRulesTests.java

@@ -10,6 +10,8 @@
 
 package org.junit.jupiter.migrationsupport.rules;
 
+import static org.junit.jupiter.migrationsupport.rules.FailAfterAllHelper.fail;
+
 import org.junit.Rule;
 import org.junit.jupiter.api.AfterAll;
 import org.junit.jupiter.api.Test;
@@ -57,9 +59,4 @@ static void afterMethodsOfBothRulesWereExecuted() {
 			fail();
 	}
 
-	static void fail() {
-		//hack: use this blacklisted exception to fail the build, all others would be swallowed...
-		throw new OutOfMemoryError("a postcondition was violated");
-	}
-
 }