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      1 /*
      2  * Copyright (C) 2017 The Android Open Source Project
      3  *
      4  * Licensed under the Apache License, Version 2.0 (the "License");
      5  * you may not use this file except in compliance with the License.
      6  * You may obtain a copy of the License at
      7  *
      8  *      http://www.apache.org/licenses/LICENSE-2.0
      9  *
     10  * Unless required by applicable law or agreed to in writing, software
     11  * distributed under the License is distributed on an "AS IS" BASIS,
     12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
     13  * See the License for the specific language governing permissions and
     14  * limitations under the License.
     15  */
     16 package com.android.cts.delegate;
     17 
     18 import android.test.MoreAsserts;
     19 import junit.framework.Assert;
     20 
     21 /**
     22  * Utils class for delegation tests.
     23  */
     24 public class DelegateTestUtils {
     25 
     26     @FunctionalInterface
     27     public interface ExceptionRunnable {
     28         void run() throws Exception;
     29     }
     30 
     31     public static void assertExpectException(Class<? extends Throwable> expectedExceptionType,
     32             String expectedExceptionMessageRegex, ExceptionRunnable r) {
     33         try {
     34             r.run();
     35         } catch (Throwable e) {
     36             Assert.assertTrue("Expected " + expectedExceptionType.getName() + " but caught " + e,
     37                 expectedExceptionType.isAssignableFrom(e.getClass()));
     38             if (expectedExceptionMessageRegex != null) {
     39                 MoreAsserts.assertContainsRegex(expectedExceptionMessageRegex, e.getMessage());
     40             }
     41             return; // Pass
     42         }
     43         Assert.fail("Expected " + expectedExceptionType.getName() + " was not thrown");
     44     }
     45 }
     46