StringLengthComparatorTest.java

/***************************************************************************
   Copyright 2008 Emily Estes

   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.
***************************************************************************/
package net.metanotion.util;


public final class StringLengthComparatorTest {
	public static void assertTrue(final boolean result) {
		if(!result) {
			throw new RuntimeException("Expected true");
		}
	}

	public static void main(final String[] args) throws Exception {
		final StringLengthComparator slc = new StringLengthComparator();
		assertTrue(slc.compare(null, null) == 0);
		assertTrue(slc.compare("", null) == 0);
		assertTrue(slc.compare(null, "") == 0);
		assertTrue(slc.compare("", "") == 0);
		assertTrue(slc.compare(null, "a") == 1);
		assertTrue(slc.compare("a", null) == -1);
		assertTrue(slc.compare("", "a") == 1);
		assertTrue(slc.compare("a", "") == -1);
		assertTrue(slc.compare("a", "a") == 0);
		assertTrue(slc.compare("a", "b") == -1);
		assertTrue(slc.compare("b", "a") == 1);
		assertTrue(slc.compare("aa", "b") == -1);
		assertTrue(slc.compare("a", "bb") == 1);
	}
}