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/*
* 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.BigInteger;
import java.math.RoundingMode;
import java.text.DecimalFormat;
import java.text.DecimalFormatSymbols;
import java.text.FieldPosition;
import java.text.NumberFormat;
import java.text.ParsePosition;
import java.util.Currency;
import java.util.Locale;
public class NumberFormatTest extends junit.framework.TestCase {
// NumberFormat.format(Object, StringBuffer, FieldPosition) guarantees it calls doubleValue for
// custom Number subclasses.
public void test_custom_Number_gets_longValue() throws Exception {
class MyNumber extends Number {
public byte byteValue() { throw new UnsupportedOperationException(); }
public double doubleValue() { return 123; }
public float floatValue() { throw new UnsupportedOperationException(); }
public int intValue() { throw new UnsupportedOperationException(); }
public long longValue() { throw new UnsupportedOperationException(); }
public short shortValue() { throw new UnsupportedOperationException(); }
public String toString() { throw new UnsupportedOperationException(); }
}
NumberFormat nf = NumberFormat.getNumberInstance(Locale.US);
assertEquals("123", nf.format(new MyNumber()));
}
// NumberFormat.format(Object, StringBuffer, FieldPosition) guarantees it calls longValue for
// any BigInteger with a bitLength strictly less than 64.
public void test_small_BigInteger_gets_longValue() throws Exception {
class MyNumberFormat extends NumberFormat {
public StringBuffer format(double value, StringBuffer b, FieldPosition f) {
b.append("double");
return b;
}
public StringBuffer format(long value, StringBuffer b, FieldPosition f) {
b.append("long");
return b;
}
public Number parse(String string, ParsePosition p) {
throw new UnsupportedOperationException();
}
}
NumberFormat nf = new MyNumberFormat();
assertEquals("long", nf.format(BigInteger.valueOf(Long.MAX_VALUE)));
assertEquals("double", nf.format(BigInteger.valueOf(Long.MAX_VALUE).add(BigInteger.ONE)));
assertEquals("long", nf.format(BigInteger.valueOf(Long.MIN_VALUE)));
assertEquals("double", nf.format(BigInteger.valueOf(Long.MIN_VALUE).subtract(BigInteger.ONE)));
}
public void test_getIntegerInstance_ar() throws Exception {
NumberFormat numberFormat = NumberFormat.getNumberInstance(new Locale("ar"));
assertEquals("#,##0.###", ((DecimalFormat) numberFormat).toPattern());
NumberFormat integerFormat = NumberFormat.getIntegerInstance(new Locale("ar"));
assertEquals("#,##0", ((DecimalFormat) integerFormat).toPattern());
}
public void test_numberLocalization() throws Exception {
Locale arabic = new Locale("ar");
NumberFormat nf = NumberFormat.getNumberInstance(arabic);
assertEquals('\u0660', new DecimalFormatSymbols(arabic).getZeroDigit());
assertEquals("١٬٢٣٤٬٥٦٧٬٨٩٠", nf.format(1234567890));
}
// Formatting percentages is confusing but deliberate.
// Ensure we don't accidentally "fix" this.
// https://code.google.com/p/android/issues/detail?id=10333
public void test_10333() throws Exception {
NumberFormat nf = NumberFormat.getPercentInstance(Locale.US);
assertEquals("15%", nf.format(0.15));
assertEquals("1,500%", nf.format(15));
try {
nf.format("15");
fail();
} catch (IllegalArgumentException expected) {
}
}
public void testPercentageRounding() throws Exception {
NumberFormat nf = NumberFormat.getPercentInstance(Locale.US);
assertEquals("15%", nf.format(0.149));
assertEquals("14%", nf.format(0.142));
nf.setRoundingMode(RoundingMode.UP);
assertEquals("15%", nf.format(0.142));
nf.setRoundingMode(RoundingMode.DOWN);
assertEquals("14%", nf.format(0.149));
nf.setMaximumFractionDigits(1);
assertEquals("14.9%", nf.format(0.149));
}
// https://code.google.com/p/android/issues/detail?id=62269
public void test_62269() throws Exception {
NumberFormat nf = NumberFormat.getNumberInstance(Locale.US);
try {
nf.parse(null);
fail();
} catch (NullPointerException expected) {
}
}
public void test_nullLocales() {
try {
NumberFormat.getInstance(null);
fail();
} catch (NullPointerException expected) {}
try {
NumberFormat.getIntegerInstance(null);
fail();
} catch (NullPointerException expected) {}
try {
NumberFormat.getCurrencyInstance(null);
fail();
} catch (NullPointerException expected) {}
try {
NumberFormat.getPercentInstance(null);
fail();
} catch (NullPointerException expected) {}
try {
NumberFormat.getNumberInstance(null);
fail();
} catch (NullPointerException expected) {}
}
// https://code.google.com/p/android/issues/detail?id=79925
public void test_setCurrency() throws Exception {
NumberFormat nf = NumberFormat.getCurrencyInstance(Locale.US);
nf.setCurrency(Currency.getInstance("AMD"));
assertEquals("AMD50.00", nf.format(50.0));
DecimalFormatSymbols decimalFormatSymbols = ((DecimalFormat) nf).getDecimalFormatSymbols();
decimalFormatSymbols.setCurrencySymbol("");
((DecimalFormat) nf).setDecimalFormatSymbols(decimalFormatSymbols);
assertEquals("50.00", nf.format(50.0));
nf.setCurrency(Currency.getInstance("AMD"));
assertEquals("AMD50.00", nf.format(50.0));
nf.setCurrency(Currency.getInstance("AMD"));
assertEquals("AMD50.00", nf.format(50.0));
nf.setCurrency(Currency.getInstance("USD"));
assertEquals("$50.00", nf.format(50.0));
nf.setCurrency(Currency.getInstance("AMD"));
assertEquals("AMD50.00", nf.format(50.0));
}
}
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