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Java example source code file (StrMatcherTest.java)

This example Java source code file (StrMatcherTest.java) is included in the alvinalexander.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" TM.

Learn more about this Java project at its project page.

Java - Java tags/keywords

buffer1, buffer2, strmatcher, strmatchertest, test

The StrMatcherTest.java Java example source code

/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You 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.
 */

package org.apache.commons.lang3.text;

import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertSame;
import static org.junit.Assert.assertTrue;

import org.junit.Test;

/**
 * Unit tests for {@link org.apache.commons.lang3.text.StrMatcher}.
 */
public class StrMatcherTest  {

    private static final char[] BUFFER1 = "0,1\t2 3\n\r\f\u0000'\"".toCharArray();

    private static final char[] BUFFER2 = "abcdef".toCharArray();


    //-----------------------------------------------------------------------
    @Test
    public void testCommaMatcher() {
        final StrMatcher matcher = StrMatcher.commaMatcher();
        assertSame(matcher, StrMatcher.commaMatcher());
        assertEquals(0, matcher.isMatch(BUFFER1, 0));
        assertEquals(1, matcher.isMatch(BUFFER1, 1));
        assertEquals(0, matcher.isMatch(BUFFER1, 2));
    }

    //-----------------------------------------------------------------------
    @Test
    public void testTabMatcher() {
        final StrMatcher matcher = StrMatcher.tabMatcher();
        assertSame(matcher, StrMatcher.tabMatcher());
        assertEquals(0, matcher.isMatch(BUFFER1, 2));
        assertEquals(1, matcher.isMatch(BUFFER1, 3));
        assertEquals(0, matcher.isMatch(BUFFER1, 4));
    }

    //-----------------------------------------------------------------------
    @Test
    public void testSpaceMatcher() {
        final StrMatcher matcher = StrMatcher.spaceMatcher();
        assertSame(matcher, StrMatcher.spaceMatcher());
        assertEquals(0, matcher.isMatch(BUFFER1, 4));
        assertEquals(1, matcher.isMatch(BUFFER1, 5));
        assertEquals(0, matcher.isMatch(BUFFER1, 6));
    }

    //-----------------------------------------------------------------------
    @Test
    public void testSplitMatcher() {
        final StrMatcher matcher = StrMatcher.splitMatcher();
        assertSame(matcher, StrMatcher.splitMatcher());
        assertEquals(0, matcher.isMatch(BUFFER1, 2));
        assertEquals(1, matcher.isMatch(BUFFER1, 3));
        assertEquals(0, matcher.isMatch(BUFFER1, 4));
        assertEquals(1, matcher.isMatch(BUFFER1, 5));
        assertEquals(0, matcher.isMatch(BUFFER1, 6));
        assertEquals(1, matcher.isMatch(BUFFER1, 7));
        assertEquals(1, matcher.isMatch(BUFFER1, 8));
        assertEquals(1, matcher.isMatch(BUFFER1, 9));
        assertEquals(0, matcher.isMatch(BUFFER1, 10));
    }

    //-----------------------------------------------------------------------
    @Test
    public void testTrimMatcher() {
        final StrMatcher matcher = StrMatcher.trimMatcher();
        assertSame(matcher, StrMatcher.trimMatcher());
        assertEquals(0, matcher.isMatch(BUFFER1, 2));
        assertEquals(1, matcher.isMatch(BUFFER1, 3));
        assertEquals(0, matcher.isMatch(BUFFER1, 4));
        assertEquals(1, matcher.isMatch(BUFFER1, 5));
        assertEquals(0, matcher.isMatch(BUFFER1, 6));
        assertEquals(1, matcher.isMatch(BUFFER1, 7));
        assertEquals(1, matcher.isMatch(BUFFER1, 8));
        assertEquals(1, matcher.isMatch(BUFFER1, 9));
        assertEquals(1, matcher.isMatch(BUFFER1, 10));
    }

    //-----------------------------------------------------------------------
    @Test
    public void testSingleQuoteMatcher() {
        final StrMatcher matcher = StrMatcher.singleQuoteMatcher();
        assertSame(matcher, StrMatcher.singleQuoteMatcher());
        assertEquals(0, matcher.isMatch(BUFFER1, 10));
        assertEquals(1, matcher.isMatch(BUFFER1, 11));
        assertEquals(0, matcher.isMatch(BUFFER1, 12));
    }

    //-----------------------------------------------------------------------
    @Test
    public void testDoubleQuoteMatcher() {
        final StrMatcher matcher = StrMatcher.doubleQuoteMatcher();
        assertSame(matcher, StrMatcher.doubleQuoteMatcher());
        assertEquals(0, matcher.isMatch(BUFFER1, 11));
        assertEquals(1, matcher.isMatch(BUFFER1, 12));
    }

    //-----------------------------------------------------------------------
    @Test
    public void testQuoteMatcher() {
        final StrMatcher matcher = StrMatcher.quoteMatcher();
        assertSame(matcher, StrMatcher.quoteMatcher());
        assertEquals(0, matcher.isMatch(BUFFER1, 10));
        assertEquals(1, matcher.isMatch(BUFFER1, 11));
        assertEquals(1, matcher.isMatch(BUFFER1, 12));
    }

    //-----------------------------------------------------------------------
    @Test
    public void testNoneMatcher() {
        final StrMatcher matcher = StrMatcher.noneMatcher();
        assertSame(matcher, StrMatcher.noneMatcher());
        assertEquals(0, matcher.isMatch(BUFFER1, 0));
        assertEquals(0, matcher.isMatch(BUFFER1, 1));
        assertEquals(0, matcher.isMatch(BUFFER1, 2));
        assertEquals(0, matcher.isMatch(BUFFER1, 3));
        assertEquals(0, matcher.isMatch(BUFFER1, 4));
        assertEquals(0, matcher.isMatch(BUFFER1, 5));
        assertEquals(0, matcher.isMatch(BUFFER1, 6));
        assertEquals(0, matcher.isMatch(BUFFER1, 7));
        assertEquals(0, matcher.isMatch(BUFFER1, 8));
        assertEquals(0, matcher.isMatch(BUFFER1, 9));
        assertEquals(0, matcher.isMatch(BUFFER1, 10));
        assertEquals(0, matcher.isMatch(BUFFER1, 11));
        assertEquals(0, matcher.isMatch(BUFFER1, 12));
    }

    //-----------------------------------------------------------------------
    @Test
    public void testCharMatcher_char() {
        final StrMatcher matcher = StrMatcher.charMatcher('c');
        assertEquals(0, matcher.isMatch(BUFFER2, 0));
        assertEquals(0, matcher.isMatch(BUFFER2, 1));
        assertEquals(1, matcher.isMatch(BUFFER2, 2));
        assertEquals(0, matcher.isMatch(BUFFER2, 3));
        assertEquals(0, matcher.isMatch(BUFFER2, 4));
        assertEquals(0, matcher.isMatch(BUFFER2, 5));
    }

    //-----------------------------------------------------------------------
    @Test
    public void testCharSetMatcher_String() {
        final StrMatcher matcher = StrMatcher.charSetMatcher("ace");
        assertEquals(1, matcher.isMatch(BUFFER2, 0));
        assertEquals(0, matcher.isMatch(BUFFER2, 1));
        assertEquals(1, matcher.isMatch(BUFFER2, 2));
        assertEquals(0, matcher.isMatch(BUFFER2, 3));
        assertEquals(1, matcher.isMatch(BUFFER2, 4));
        assertEquals(0, matcher.isMatch(BUFFER2, 5));
        assertSame(StrMatcher.noneMatcher(), StrMatcher.charSetMatcher(""));
        assertSame(StrMatcher.noneMatcher(), StrMatcher.charSetMatcher((String) null));
        assertTrue(StrMatcher.charSetMatcher("a") instanceof StrMatcher.CharMatcher);
    }

    //-----------------------------------------------------------------------
    @Test
    public void testCharSetMatcher_charArray() {
        final StrMatcher matcher = StrMatcher.charSetMatcher("ace".toCharArray());
        assertEquals(1, matcher.isMatch(BUFFER2, 0));
        assertEquals(0, matcher.isMatch(BUFFER2, 1));
        assertEquals(1, matcher.isMatch(BUFFER2, 2));
        assertEquals(0, matcher.isMatch(BUFFER2, 3));
        assertEquals(1, matcher.isMatch(BUFFER2, 4));
        assertEquals(0, matcher.isMatch(BUFFER2, 5));
        assertSame(StrMatcher.noneMatcher(), StrMatcher.charSetMatcher(new char[0]));
        assertSame(StrMatcher.noneMatcher(), StrMatcher.charSetMatcher((char[]) null));
        assertTrue(StrMatcher.charSetMatcher("a".toCharArray()) instanceof StrMatcher.CharMatcher);
    }

    //-----------------------------------------------------------------------
    @Test
    public void testStringMatcher_String() {
        final StrMatcher matcher = StrMatcher.stringMatcher("bc");
        assertEquals(0, matcher.isMatch(BUFFER2, 0));
        assertEquals(2, matcher.isMatch(BUFFER2, 1));
        assertEquals(0, matcher.isMatch(BUFFER2, 2));
        assertEquals(0, matcher.isMatch(BUFFER2, 3));
        assertEquals(0, matcher.isMatch(BUFFER2, 4));
        assertEquals(0, matcher.isMatch(BUFFER2, 5));
        assertSame(StrMatcher.noneMatcher(), StrMatcher.stringMatcher(""));
        assertSame(StrMatcher.noneMatcher(), StrMatcher.stringMatcher((String) null));
    }

    //-----------------------------------------------------------------------
    @Test
    public void testMatcherIndices() {
        // remember that the API contract is tight for the isMatch() method
        // all the onus is on the caller, so invalid inputs are not
        // the concern of StrMatcher, and are not bugs
        final StrMatcher matcher = StrMatcher.stringMatcher("bc");
        assertEquals(2, matcher.isMatch(BUFFER2, 1, 1, BUFFER2.length));
        assertEquals(2, matcher.isMatch(BUFFER2, 1, 0, 3));
        assertEquals(0, matcher.isMatch(BUFFER2, 1, 0, 2));
    }

}

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