testcountfuncs.java

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   this work for additional information regarding copyright ownership.
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   (the "License"); you may not use this file except in compliance with
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   distributed under the License is distributed on an "AS IS" BASIS,
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package org.apache.poi.hssf.record.formula.functions;

import junit.framework.AssertionFailedError;
import junit.framework.TestCase;

import org.apache.poi.hssf.HSSFTestDataSamples;
import org.apache.poi.hssf.record.formula.eval.AreaEval;
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.Eval;
import org.apache.poi.hssf.record.formula.eval.NumberEval;
import org.apache.poi.hssf.record.formula.eval.StringEval;
import org.apache.poi.hssf.record.formula.eval.ValueEval;
import org.apache.poi.hssf.record.formula.functions.CountUtils.I_MatchPredicate;
import org.apache.poi.hssf.usermodel.HSSFCell;
import org.apache.poi.hssf.usermodel.HSSFFormulaEvaluator;
import org.apache.poi.hssf.usermodel.HSSFRow;
import org.apache.poi.hssf.usermodel.HSSFSheet;
import org.apache.poi.hssf.usermodel.HSSFWorkbook;
import org.apache.poi.hssf.usermodel.HSSFFormulaEvaluator.CellValue;

/**
 * Test cases for COUNT(), COUNTA() COUNTIF(), COUNTBLANK()
 *
 * @author Josh Micich
 */
public final class TestCountFuncs extends TestCase {

	public void testCountA() {

		Eval[] args;

		args = new Eval[] {
			new NumberEval(0),
		};
		confirmCountA(1, args);

		args = new Eval[] {
			new NumberEval(0),
			new NumberEval(0),
			new StringEval(""),
		};
		confirmCountA(3, args);

		args = new Eval[] {
			EvalFactory.createAreaEval("D2:F5", new ValueEval[12]),
		};
		confirmCountA(12, args);

		args = new Eval[] {
			EvalFactory.createAreaEval("D1:F5", new ValueEval[15]),
			EvalFactory.createRefEval("A1"),
			EvalFactory.createAreaEval("A1:G6", new ValueEval[42]),
			new NumberEval(0),
		};
		confirmCountA(59, args);
	}

	public void testCountIf() {

		AreaEval range;
		ValueEval[] values;

		// when criteria is a boolean value
		values = new ValueEval[] {
				new NumberEval(0),
				new StringEval("TRUE"),	// note - does not match boolean TRUE
				BoolEval.TRUE,
				BoolEval.FALSE,
				BoolEval.TRUE,
				BlankEval.INSTANCE,
		};
		range = EvalFactory.createAreaEval("A1:B3", values);
		confirmCountIf(2, range, BoolEval.TRUE);

		// when criteria is numeric
		values = new ValueEval[] {
				new NumberEval(0),
				new StringEval("2"),
				new StringEval("2.001"),
				new NumberEval(2),
				new NumberEval(2),
				BoolEval.TRUE,
		};
		range = EvalFactory.createAreaEval("A1:B3", values);
		confirmCountIf(3, range, new NumberEval(2));
		// note - same results when criteria is a string that parses as the number with the same value
		confirmCountIf(3, range, new StringEval("2.00"));

		if (false) { // not supported yet:
			// when criteria is an expression (starting with a comparison operator)
			confirmCountIf(4, range, new StringEval(">1"));
		}
	}
	/**
	 * special case where the criteria argument is a cell reference
	 */
	public void testCountIfWithCriteriaReference() {

		ValueEval[] values = {
				new NumberEval(22),
				new NumberEval(25),
				new NumberEval(21),
				new NumberEval(25),
				new NumberEval(25),
				new NumberEval(25),
		};
		AreaEval arg0 = EvalFactory.createAreaEval("C1:C6", values);

		ValueEval criteriaArg = EvalFactory.createRefEval("A1", new NumberEval(25));
		Eval[] args=  { arg0, criteriaArg, };

		double actual = NumericFunctionInvoker.invoke(new Countif(), args);
		assertEquals(4, actual, 0D);
	}

	private static void confirmCountA(int expected, Eval[] args) {
		double result = NumericFunctionInvoker.invoke(new Counta(), args);
		assertEquals(expected, result, 0);
	}
	private static void confirmCountIf(int expected, AreaEval range, Eval criteria) {

		Eval[] args = { range, criteria, };
		double result = NumericFunctionInvoker.invoke(new Countif(), args);
		assertEquals(expected, result, 0);
	}

	public void testCountIfEmptyStringCriteria() {
		I_MatchPredicate mp;

		// pred '=' matches blank cell but not empty string
		mp = Countif.createCriteriaPredicate(new StringEval("="));
		confirmPredicate(false, mp, "");
		confirmPredicate(true, mp, null);

		// pred '' matches both blank cell but not empty string
		mp = Countif.createCriteriaPredicate(new StringEval(""));
		confirmPredicate(true, mp, "");
		confirmPredicate(true, mp, null);

		// pred '<>' matches empty string but not blank cell
		mp = Countif.createCriteriaPredicate(new StringEval("<>"));
		confirmPredicate(false, mp, null);
		confirmPredicate(true, mp, "");
	}

	public void testCountifComparisons() {
		I_MatchPredicate mp;

		mp = Countif.createCriteriaPredicate(new StringEval(">5"));
		confirmPredicate(false, mp, 4);
		confirmPredicate(false, mp, 5);
		confirmPredicate(true, mp, 6);

		mp = Countif.createCriteriaPredicate(new StringEval("<=5"));
		confirmPredicate(true, mp, 4);
		confirmPredicate(true, mp, 5);
		confirmPredicate(false, mp, 6);
		confirmPredicate(true, mp, "4.9");
		confirmPredicate(false, mp, "4.9t");
		confirmPredicate(false, mp, "5.1");
		confirmPredicate(false, mp, null);

		mp = Countif.createCriteriaPredicate(new StringEval("=abc"));
		confirmPredicate(true, mp, "abc");

		mp = Countif.createCriteriaPredicate(new StringEval("=42"));
		confirmPredicate(false, mp, 41);
		confirmPredicate(true, mp, 42);
		confirmPredicate(true, mp, "42");

		mp = Countif.createCriteriaPredicate(new StringEval(">abc"));
		confirmPredicate(false, mp, 4);
		confirmPredicate(false, mp, "abc");
		confirmPredicate(true, mp, "abd");

		mp = Countif.createCriteriaPredicate(new StringEval(">4t3"));
		confirmPredicate(false, mp, 4);
		confirmPredicate(false, mp, 500);
		confirmPredicate(true, mp, "500");
		confirmPredicate(true, mp, "4t4");
	}

	public void testWildCards() {
		I_MatchPredicate mp;

		mp = Countif.createCriteriaPredicate(new StringEval("a*b"));
		confirmPredicate(false, mp, "abc");
		confirmPredicate(true, mp, "ab");
		confirmPredicate(true, mp, "axxb");
		confirmPredicate(false, mp, "xab");

		mp = Countif.createCriteriaPredicate(new StringEval("a?b"));
		confirmPredicate(false, mp, "abc");
		confirmPredicate(false, mp, "ab");
		confirmPredicate(false, mp, "axxb");
		confirmPredicate(false, mp, "xab");
		confirmPredicate(true, mp, "axb");

		mp = Countif.createCriteriaPredicate(new StringEval("a~?"));
		confirmPredicate(false, mp, "a~a");
		confirmPredicate(false, mp, "a~?");
		confirmPredicate(true, mp, "a?");

		mp = Countif.createCriteriaPredicate(new StringEval("~*a"));
		confirmPredicate(false, mp, "~aa");
		confirmPredicate(false, mp, "~*a");
		confirmPredicate(true, mp, "*a");

		mp = Countif.createCriteriaPredicate(new StringEval("12?12"));
		confirmPredicate(false, mp, 12812);
		confirmPredicate(true, mp, "12812");
		confirmPredicate(false, mp, "128812");
	}
	public void testNotQuiteWildCards() {
		I_MatchPredicate mp;

		// make sure special reg-ex chars are treated like normal chars
		mp = Countif.createCriteriaPredicate(new StringEval("a.b"));
		confirmPredicate(false, mp, "aab");
		confirmPredicate(true, mp, "a.b");


		mp = Countif.createCriteriaPredicate(new StringEval("a~b"));
		confirmPredicate(false, mp, "ab");
		confirmPredicate(false, mp, "axb");
		confirmPredicate(false, mp, "a~~b");
		confirmPredicate(true, mp, "a~b");

		mp = Countif.createCriteriaPredicate(new StringEval(">a*b"));
		confirmPredicate(false, mp, "a(b");
		confirmPredicate(true, mp, "aab");
		confirmPredicate(false, mp, "a*a");
		confirmPredicate(true, mp, "a*c");
	}

	private static void confirmPredicate(boolean expectedResult, I_MatchPredicate matchPredicate, int value) {
		assertEquals(expectedResult, matchPredicate.matches(new NumberEval(value)));
	}
	private static void confirmPredicate(boolean expectedResult, I_MatchPredicate matchPredicate, String value) {
		Eval ev = value == null ? (Eval)BlankEval.INSTANCE : new StringEval(value);
		assertEquals(expectedResult, matchPredicate.matches(ev));
	}

	public void testCountifFromSpreadsheet() {
		final String FILE_NAME = "countifExamples.xls";
		final int START_ROW_IX = 1;
		final int COL_IX_ACTUAL = 2;
		final int COL_IX_EXPECTED = 3;

		int failureCount = 0;
		HSSFWorkbook wb = HSSFTestDataSamples.openSampleWorkbook(FILE_NAME);
		HSSFSheet sheet = wb.getSheetAt(0);
		HSSFFormulaEvaluator fe = new HSSFFormulaEvaluator(wb);
		int maxRow = sheet.getLastRowNum();
		for (int rowIx=START_ROW_IX; rowIx<maxRow; rowIx++) {
			HSSFRow row = sheet.getRow(rowIx);
			if(row == null) {
				continue;
			}
			HSSFCell cell = row.getCell(COL_IX_ACTUAL);
			CellValue cv = fe.evaluate(cell);
			double actualValue = cv.getNumberValue();
			double expectedValue = row.getCell(COL_IX_EXPECTED).getNumericCellValue();
			if (actualValue != expectedValue) {
				System.err.println("Problem with test case on row " + (rowIx+1) + " "
						+ "Expected = (" + expectedValue + ") Actual=(" + actualValue + ") ");
				failureCount++;
			}
		}

		if (failureCount > 0) {
			throw new AssertionFailedError(failureCount + " countif evaluations failed. See stderr for more details");
		}
	}
}