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-rw-r--r--utils-test/src/main/java/org/onap/policy/common/utils/test/PolicyAssert.java61
1 files changed, 61 insertions, 0 deletions
diff --git a/utils-test/src/main/java/org/onap/policy/common/utils/test/PolicyAssert.java b/utils-test/src/main/java/org/onap/policy/common/utils/test/PolicyAssert.java
new file mode 100644
index 00000000..fdd098f6
--- /dev/null
+++ b/utils-test/src/main/java/org/onap/policy/common/utils/test/PolicyAssert.java
@@ -0,0 +1,61 @@
+/*
+ * ============LICENSE_START=======================================================
+ * ONAP
+ * ================================================================================
+ * Copyright (C) 2018 AT&T Intellectual Property. All rights reserved.
+ * ================================================================================
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ * ============LICENSE_END=========================================================
+ */
+
+package org.onap.policy.common.utils.test;
+
+public class PolicyAssert {
+
+ /**
+ * Should not instantiate this.
+ */
+ private PolicyAssert() {
+ // do nothing
+ }
+
+ /**
+ * Invokes a function that is expected to throw an exception.
+ *
+ * @param clazz class of exception that is expected
+ * @param func function
+ * @return object
+ */
+ public static <T> T assertException(Class<T> clazz, RunnableWithEx func) {
+ try {
+ func.run();
+ throw new AssertionError("missing exception");
+
+ } catch (Exception e) {
+ try {
+ return clazz.cast(e);
+
+ } catch (ClassCastException e2) {
+ throw new AssertionError("incorrect exception type", e2);
+ }
+ }
+ }
+
+ /**
+ * Runnable that may throw an exception.
+ */
+ @FunctionalInterface
+ public static interface RunnableWithEx {
+ public void run() throws Exception;
+ }
+}