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/*
* Copyright (c) 2023, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation.
*
* This code is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
* or visit www.oracle.com if you need additional information or have any
* questions.
*/
/*
* @test
* @bug 6801704
* @summary Test the expected behavior for a wide range of patterns (both
* correct and incorrect). This test documents the behavior of incorrect
* ChoiceFormat patterns either throwing an exception, or discarding
* the incorrect portion of a pattern.
* @run junit PatternsTest
*/
import java.text.ChoiceFormat;
import org.junit.jupiter.api.Test;
import org.junit.jupiter.params.ParameterizedTest;
import org.junit.jupiter.params.provider.Arguments;
import org.junit.jupiter.params.provider.MethodSource;
import static org.junit.jupiter.api.Assertions.assertDoesNotThrow;
import static org.junit.jupiter.api.Assertions.assertEquals;
import static org.junit.jupiter.api.Assertions.assertThrows;
import static org.junit.jupiter.params.provider.Arguments.arguments;
public class PatternsTest {
private static final String ERR1 =
"Each interval must contain a number before a format";
private static final String ERR2 =
"Incorrect order of intervals, must be in ascending order";
// Check that some valid patterns do not throw an exception. Check
// them against the expected values they should be formatted as.
@ParameterizedTest
@MethodSource
public void validPatternsTest(String pattern, String[] expectedValues) {
var fmt = new ChoiceFormat(pattern);
for (int i=1; i<=expectedValues.length; i++) {
assertEquals(expectedValues[i-1], fmt.format(i),
String.format("ChoiceFormat formatted %s incorrectly:", i));
}
}
// Valid patterns ranging from normal appearing to odd. These should not
// throw an exception or discard any portions of the pattern.
private static Arguments[] validPatternsTest() {
return new Arguments[] {
// Multi pattern with trailing empty string Format
arguments("1#foo|2#bar|3#", new String[]{"foo", "bar", ""}),
// Multi patten with trailing '|'
arguments("1#foo|2#bar|", new String[]{"foo", "bar"}),
// Using a '>' (not a Relation) within a Format
arguments("1#foo|2#bar>", new String[]{"foo", "bar>"}),
// Standard Multi Pattern
arguments("1#foo|2#bar", new String[]{"foo", "bar"}),
// Same numerical value Limits, different Relations
arguments("1#foo|1<baz", new String[]{"foo", "baz"}),
// Standard Single Pattern
arguments("1#foo", new String[]{"foo"}),
// Single pattern with empty string Format
arguments("1#", new String[]{""})
};
}
// Check that the incorrect pattern throws an IAE with the desired error msg
// This also tests applyPattern, as the ChoiceFormat constructor calls applyPattern
@ParameterizedTest
@MethodSource
public void invalidPatternsThrowsTest(String pattern, String errMsg) {
var ex = assertThrows(IllegalArgumentException.class,
() -> new ChoiceFormat(pattern));
assertEquals(errMsg, ex.getMessage());
}
// Variety of patterns that break the ChoiceFormat pattern syntax and throw
// an exception.
private static Arguments[] invalidPatternsThrowsTest() {
return new Arguments[] {
arguments("#foo", ERR1), // No Limit
arguments("0#foo|#|1#bar", ERR1), // Missing Relation in SubPattern
arguments("#|", ERR1), // Missing Limit
arguments("##|", ERR1), // Double Relations
arguments("0#foo1#", ERR1), // SubPattern not separated by '|'
arguments("0#foo#", ERR1), // Using a Relation in a format
arguments("0#test|#", ERR1), // SubPattern missing Limit
arguments("0#foo|3#bar|1#baz", ERR2), // Non-ascending Limits
};
}
// Check that the incorrect pattern discards the trailing incorrect portion.
// These incorrect patterns should ideally throw an exception, but for
// behavioral compatibility reasons do not.
@ParameterizedTest
@MethodSource
public void invalidPatternsDiscardedTest(String brokenPattern, String actualPattern) {
var cf1 = new ChoiceFormat(brokenPattern);
var cf2 = new ChoiceFormat(actualPattern);
assertEquals(cf2, cf1,
String.format("Expected %s, but got %s", cf2.toPattern(), cf1.toPattern()));
}
// Variety of incorrect patterns with the actual expected pattern
// after discarding occurs.
private static Arguments[] invalidPatternsDiscardedTest() {
return new Arguments[] {
// Incomplete SubPattern at the end of the Pattern
arguments("0#foo|1#bar|baz", "0#foo|1#bar"),
// --- These throw an ArrayIndexOutOfBoundsException
// when attempting to format with them ---
// SubPattern with only a Limit (which is interpreted as a Format)
arguments("0", ""),
// SubPattern with only a Format
arguments("foo", ""),
// empty string
arguments("", "")
};
}
// Calling format() with empty limits and formats
// throws an ArrayIndexOutOfBoundsException
@Test
public void emptyLimitsAndFormatsTest() {
var cf1 = new ChoiceFormat("");
assertThrows(ArrayIndexOutOfBoundsException.class,
() -> cf1.format(1));
var cf2 = new ChoiceFormat(new double[]{}, new String[]{});
assertThrows(ArrayIndexOutOfBoundsException.class,
() -> cf2.format(2));
}
}
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