1 /* Licensed to the Apache Software Foundation (ASF) under one or more 2 * contributor license agreements. See the NOTICE file distributed with 3 * this work for additional information regarding copyright ownership. 4 * The ASF licenses this file to You under the Apache License, Version 2.0 5 * (the "License"); you may not use this file except in compliance with 6 * the License. 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 17 package org.apache.harmony.tests.java.util.regex; 18 19 import java.util.regex.Pattern; 20 21 import junit.framework.TestCase; 22 23 /** 24 * Test boundary and error conditions in java.util.regex.Pattern 25 */ 26 @SuppressWarnings("nls") 27 public class PatternErrorTest extends TestCase { 28 public void testCompileErrors() throws Exception { 29 // null regex string - should get NullPointerException 30 try { 31 Pattern.compile(null); 32 fail("NullPointerException expected"); 33 } catch (NullPointerException e) { 34 } 35 36 // empty regex string - no exception should be thrown 37 Pattern.compile(""); 38 39 // note: invalid regex syntax checked in PatternSyntaxExceptionTest 40 41 // flags = 0 should raise no exception 42 int flags = 0; 43 Pattern.compile("foo", flags); 44 45 // check that all valid flags accepted without exception 46 flags |= Pattern.UNIX_LINES; 47 flags |= Pattern.CASE_INSENSITIVE; 48 flags |= Pattern.MULTILINE; 49 flags |= Pattern.CANON_EQ; 50 flags |= Pattern.COMMENTS; 51 flags |= Pattern.DOTALL; 52 flags |= Pattern.UNICODE_CASE; 53 flags &= ~Pattern.CANON_EQ; // Android always throws given this flag. 54 Pattern.compile("foo", flags); 55 56 // add invalid flags - should get IllegalArgumentException 57 // regression test for HARMONY-4248 58 flags |= 0xFFFFFFFF; 59 flags &= ~Pattern.CANON_EQ; // Android always throws given this flag. 60 try { 61 Pattern.compile("foo", flags); 62 fail("Expected IllegalArgumentException to be thrown"); 63 } catch (IllegalArgumentException e) { 64 // This is the expected exception 65 } 66 } 67 } 68
