/*
* Copyright (C) 2010 The Android Open Source Project
*
* 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 libcore.java.text;
import java.math.BigDecimal;
import java.math.BigInteger;
import java.math.RoundingMode;
import java.text.DecimalFormat;
import java.text.DecimalFormatSymbols;
import java.text.NumberFormat;
import java.util.Locale;
import tests.support.Support_Locale;
public class DecimalFormatTest extends junit.framework.TestCase {
public void test_exponentSeparator() throws Exception {
DecimalFormat df = new DecimalFormat("0E0");
assertEquals("1E4", df.format(12345.));
DecimalFormatSymbols dfs = df.getDecimalFormatSymbols();
dfs.setExponentSeparator("-useless-api-");
df.setDecimalFormatSymbols(dfs);
assertEquals("1-useless-api-4", df.format(12345.));
}
public void test_setMaximumFractionDigitsAffectsRoundingMode() throws Exception {
DecimalFormat df = (DecimalFormat) DecimalFormat.getInstance(Locale.US);
df.setMaximumFractionDigits(0);
df.setRoundingMode(RoundingMode.HALF_UP);
assertEquals("-0", df.format(-0.2));
df.setMaximumFractionDigits(1);
assertEquals("-0.2", df.format(-0.2));
}
// Android fails this test, truncating to 127 digits.
public void test_setMaximumIntegerDigits() throws Exception {
NumberFormat numberFormat = NumberFormat.getNumberInstance(Locale.US);
numberFormat.setGroupingUsed(false);
numberFormat.setMinimumIntegerDigits(400);
// The RI's documentation suggests that the int should be formatted to 309 characters --
// a magic number they don't explain -- but the BigInteger should be formatted to the 400
// characters we asked for. In practice, the RI uses 309 in both cases.
assertEquals(309, numberFormat.format(123).length());
assertEquals(309, numberFormat.format(BigInteger.valueOf(123)).length());
}
// Regression test for http://b/1897917: BigDecimal does not take into account multiplier.
public void testBigDecimalBug1897917() {
// For example. the BigDecimal 0.17 formatted in PercentInstance is 0% instead of 17%:
NumberFormat pf = NumberFormat.getPercentInstance();
assertEquals("17%", pf.format(BigDecimal.valueOf(0.17)));
// Test long decimal formatted in PercentInstance with various fractions.
String longDec = "11.2345678901234567890123456789012345678901234567890";
BigDecimal bd = new BigDecimal(longDec);
assertBigDecimalWithFraction(bd, "1,123.46%", 2);
assertBigDecimalWithFraction(bd, "1,123.45678901%", 8);
assertBigDecimalWithFraction(bd, "1,123.4567890123%", 10);
assertBigDecimalWithFraction(bd, "1,123.45678901234567890123%", 20);
assertBigDecimalWithFraction(bd, "1,123.456789012345678901234567890123%", 30);
// Test trailing zeros.
assertDecFmtWithMultiplierAndFraction("3333.33333333", 3, 4, "10,000");
assertDecFmtWithMultiplierAndFraction("3333.33333333", -3, 4, "-10,000");
assertDecFmtWithMultiplierAndFraction("0.00333333", 3, 4, "0.01");
assertDecFmtWithMultiplierAndFractionByLocale("3330000000000000000000000000000000", 3, 4,
Locale.US, "9,990,000,000,000,000,000,000,000,000,000,000");
Locale inLocale = new Locale("en", "IN");
if (Support_Locale.isLocaleAvailable(inLocale)) {
assertDecFmtWithMultiplierAndFractionByLocale("3330000000000000000000000000000000", 3, 4,
inLocale, "9,99,00,00,00,00,00,00,00,00,00,00,00,00,00,00,000");
}
}
public void testBigDecimalTestBigIntWithMultiplier() {
// Big integer tests.
assertDecFmtWithMultiplierAndFractionByLocale("123456789012345", 10, 0,
Locale.US, "1,234,567,890,123,450");
assertDecFmtWithMultiplierAndFractionByLocale("12345678901234567890", 10, 0,
Locale.US, "123,456,789,012,345,678,900");
assertDecFmtWithMultiplierAndFractionByLocale("98765432109876543210987654321", 10, 0,
Locale.US, "987,654,321,098,765,432,109,876,543,210");
assertDecFmtWithMultiplierAndFractionByLocale("123456789012345", -10, 0,
Locale.US, "-1,234,567,890,123,450");
assertDecFmtWithMultiplierAndFractionByLocale("12345678901234567890", -10, 0,
Locale.US, "-123,456,789,012,345,678,900");
assertDecFmtWithMultiplierAndFractionByLocale("98765432109876543210987654321", -10, 0,
Locale.US, "-987,654,321,098,765,432,109,876,543,210");
Locale inLocale = new Locale("en", "IN");
if (Support_Locale.isLocaleAvailable(inLocale)) {
assertDecFmtWithMultiplierAndFractionByLocale("123456789012345", 10, 0,
inLocale, "1,23,45,67,89,01,23,450");
assertDecFmtWithMultiplierAndFractionByLocale("12345678901234567890", 10, 0,
inLocale, "12,34,56,78,90,12,34,56,78,900");
assertDecFmtWithMultiplierAndFractionByLocale("98765432109876543210987654321", 10, 0,
inLocale, "9,87,65,43,21,09,87,65,43,21,09,87,65,43,210");
assertDecFmtWithMultiplierAndFractionByLocale("123456789012345", -10, 0,
inLocale, "-1,23,45,67,89,01,23,450");
assertDecFmtWithMultiplierAndFractionByLocale("12345678901234567890", -10, 0,
inLocale, "-12,34,56,78,90,12,34,56,78,900");
assertDecFmtWithMultiplierAndFractionByLocale("98765432109876543210987654321", -10, 0,
inLocale, "-9,87,65,43,21,09,87,65,43,21,09,87,65,43,210");
}
}
public void testBigDecimalICUConsistency() {
DecimalFormat df = (DecimalFormat) NumberFormat.getInstance();
df.setMaximumFractionDigits(2);
df.setMultiplier(2);
assertEquals(df.format(BigDecimal.valueOf(0.16)),
df.format(BigDecimal.valueOf(0.16).doubleValue()));
assertEquals(df.format(BigDecimal.valueOf(0.0293)),
df.format(BigDecimal.valueOf(0.0293).doubleValue()));
assertEquals(df.format(BigDecimal.valueOf(0.006)),
df.format(BigDecimal.valueOf(0.006).doubleValue()));
assertEquals(df.format(BigDecimal.valueOf(0.00283)),
df.format(BigDecimal.valueOf(0.00283).doubleValue()));
assertEquals(df.format(BigDecimal.valueOf(1.60)),
df.format(BigDecimal.valueOf(1.60).doubleValue()));
assertEquals(df.format(BigDecimal.valueOf(15)),
df.format(BigDecimal.valueOf(15).doubleValue()));
assertEquals(df.format(BigDecimal.valueOf(170)),
df.format(BigDecimal.valueOf(170).doubleValue()));
assertEquals(df.format(BigDecimal.valueOf(234.56)),
df.format(BigDecimal.valueOf(234.56).doubleValue()));
assertEquals(df.format(BigDecimal.valueOf(0)),
df.format(BigDecimal.valueOf(0).doubleValue()));
assertEquals(df.format(BigDecimal.valueOf(-1)),
df.format(BigDecimal.valueOf(-1).doubleValue()));
assertEquals(df.format(BigDecimal.valueOf(-10000)),
df.format(BigDecimal.valueOf(-10000).doubleValue()));
assertEquals(df.format(BigDecimal.valueOf(-0.001)),
df.format(BigDecimal.valueOf(-0.001).doubleValue()));
assertEquals(df.format(BigDecimal.valueOf(1234567890.1234567)),
df.format(BigDecimal.valueOf(1234567890.1234567).doubleValue()));
assertEquals(df.format(BigDecimal.valueOf(1.234567E100)),
df.format(BigDecimal.valueOf(1.234567E100).doubleValue()));
}
private void assertBigDecimalWithFraction(BigDecimal bd, String expectedResult, int fraction) {
NumberFormat pf = NumberFormat.getPercentInstance();
pf.setMaximumFractionDigits(fraction);
assertEquals(expectedResult, pf.format(bd));
}
private void assertDecFmtWithMultiplierAndFraction(String value, int multiplier, int fraction, String expectedResult) {
DecimalFormat df = (DecimalFormat)NumberFormat.getInstance();
df.setMultiplier(multiplier);
df.setMaximumFractionDigits(fraction);
BigDecimal d = new BigDecimal(value);
assertEquals(expectedResult, df.format(d));
}
private void assertDecFmtWithMultiplierAndFractionByLocale(String value, int multiplier, int fraction, Locale locale, String expectedResult) {
DecimalFormat df = (DecimalFormat)NumberFormat.getIntegerInstance(locale);
df.setMultiplier(multiplier);
df.setMaximumFractionDigits(fraction);
BigDecimal d = new BigDecimal(value);
assertEquals(expectedResult, df.format(d));
}
}