/* ====================================================================
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.poi.hssf.record.formula.functions;
import junit.framework.TestCase;
import org.apache.poi.hssf.record.formula.eval.BlankEval;
import org.apache.poi.hssf.record.formula.eval.BoolEval;
import org.apache.poi.hssf.record.formula.eval.ErrorEval;
import org.apache.poi.hssf.record.formula.eval.Eval;
import org.apache.poi.hssf.record.formula.eval.NumberEval;
import org.apache.poi.hssf.record.formula.eval.StringEval;
/**
* Tests for Excel function LEN()
*
* @author Josh Micich
*/
public final class TestLen extends TestCase {
private static Eval invokeLen(Eval text) {
Eval[] args = new Eval[] { text, };
return new Len().evaluate(args, -1, (short)-1);
}
private void confirmLen(Eval text, int expected) {
Eval result = invokeLen(text);
assertEquals(NumberEval.class, result.getClass());
assertEquals(expected, ((NumberEval)result).getNumberValue(), 0);
}
private void confirmLen(Eval text, ErrorEval expectedError) {
Eval result = invokeLen(text);
assertEquals(ErrorEval.class, result.getClass());
assertEquals(expectedError.getErrorCode(), ((ErrorEval)result).getErrorCode());
}
public void testBasic() {
confirmLen(new StringEval("galactic"), 8);
}
/**
* Valid cases where text arg is not exactly a string
*/
public void testUnusualArgs() {
// text (first) arg type is number, other args are strings with fractional digits
confirmLen(new NumberEval(123456), 6);
confirmLen(BoolEval.FALSE, 5);
confirmLen(BoolEval.TRUE, 4);
confirmLen(BlankEval.INSTANCE, 0);
}
public void testErrors() {
confirmLen(ErrorEval.NAME_INVALID, ErrorEval.NAME_INVALID);
}
}