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From "Artem Aliev (JIRA)" <j...@apache.org>
Subject [jira] Created: (HARMONY-2418) [regex] java.util.regex.Matcher.usePattern(Pattern) throws NPE instead of specified IllegalArgumentException
Date Mon, 04 Dec 2006 12:49:21 GMT
[regex] java.util.regex.Matcher.usePattern(Pattern)  throws NPE instead of specified IllegalArgumentException
-------------------------------------------------------------------------------------------------------------

                 Key: HARMONY-2418
                 URL: http://issues.apache.org/jira/browse/HARMONY-2418
             Project: Harmony
          Issue Type: Bug
          Components: Classlib
            Reporter: Artem Aliev


Problem: According to specification Matcher.usePattern should throw
IllegalArgumentException when argument is null.

Test to reproduce:
import junit.framework.TestCase;

import java.util.regex.*;

public class Test extends TestCase {

        public void testcase() {
                Matcher m = Pattern.compile("(.)+"). matcher("as");
                try {
                        m.usePattern(null);
                }catch (NullPointerException e) {
                        e.printStackTrace();
                        fail("Got Unexpected NullPointerException");
                } catch (IllegalArgumentException e) {
                        e.printStackTrace();
                        System.out.println("Got Expected
IllegalArgumentException");
                } 
    }
}

Output on Harmony:

C:\WS\tst_my>echo off 
Apache Harmony Launcher : (c) Copyright 1991, 2006 The Apache Software
Foundation or its licensors, as applicable.
java version "1.5.0" 
pre-alpha : not complete or compatible
svn = rsvn: '.' is not a working copy, (Sep 20 2006), Windows/ia32/msvc 1310,
release build
http://incubator.apache.org/harmony

.java.lang.NullPointerException
        at java.util.regex.Matcher.usePattern(Matcher.java:511)
        at Test.testcase(Test.java:10)
        at java.lang.reflect.VMReflection.invokeMethod(Native Method)
        at java.lang.reflect.Method.invoke(Unknown Source)
        at junit.framework.TestCase.runTest(TestCase.java:154)
        at junit.framework.TestCase.runBare(TestCase.java:127)
        at junit.framework.TestResult$1.protect(TestResult.java:106)
        at junit.framework.TestResult.runProtected(TestResult.java:124)
        at junit.framework.TestResult.run(TestResult.java:109)
        at junit.framework.TestCase.run(TestCase.java:118)
        at junit.framework.TestSuite.runTest(TestSuite.java:208)
        at junit.framework.TestSuite.run(TestSuite.java:203)
        at junit.textui.TestRunner.doRun(TestRunner.java:115)
        at junit.textui.TestRunner.start(TestRunner.java:172)
        at junit.textui.TestRunner.main(TestRunner.java:138)
F
Time: 0.016
There was 1 failure:
1) testcase(Test)junit.framework.AssertionFailedError: Got Unexpected
NullPointerException
        at Test.testcase(Test.java:13)
        at java.lang.reflect.VMReflection.invokeMethod(Native Method)

FAILURES!!!
Tests run: 1,  Failures: 1,  Errors: 0

res = 1


Output on RI:
java version "1.5.0_06"
Java(TM) 2 Runtime Environment, Standard Edition (build 1.5.0_06-b05)
Java HotSpot(TM) Client VM (build 1.5.0_06-b05, mixed mode)
.java.lang.IllegalArgumentException: Pattern cannot be null
        at java.util.regex.Matcher.usePattern(Matcher.java:250)
        at Test.testcase(Test.java:10)
        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
        at
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
        at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
        at java.lang.reflect.Method.invoke(Method.java:585)
        at junit.framework.TestCase.runTest(TestCase.java:154)
        at junit.framework.TestCase.runBare(TestCase.java:127)
        at junit.framework.TestResult$1.protect(TestResult.java:106)
        at junit.framework.TestResult.runProtected(TestResult.java:124)
        at junit.framework.TestResult.run(TestResult.java:109)
        at junit.framework.TestCase.run(TestCase.java:118)
        at junit.framework.TestSuite.runTest(TestSuite.java:208)
        at junit.framework.TestSuite.run(TestSuite.java:203)
        at junit.textui.TestRunner.doRun(TestRunner.java:116)
        at junit.textui.TestRunner.start(TestRunner.java:172)
        at junit.textui.TestRunner.main(TestRunner.java:138)
Got Expected IllegalArgumentException

Time: 0.016

OK (1 test)

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