| /* |
| * Copyright (C) 2009 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.util; |
| |
| import java.math.BigDecimal; |
| import java.util.Calendar; |
| import java.util.Locale; |
| import java.util.TimeZone; |
| |
| public class FormatterTest extends junit.framework.TestCase { |
| public void test_numberLocalization() throws Exception { |
| Locale arabic = new Locale("ar"); |
| // Check the fast path for %d: |
| assertEquals("12 \u0661\u0662\u0663\u0664\u0665\u0666\u0667\u0668\u0669\u0660 34", |
| String.format(arabic, "12 %d 34", 1234567890)); |
| // And the slow path too: |
| assertEquals("12 \u0661\u066c\u0662\u0663\u0664\u066c\u0665\u0666\u0667\u066c\u0668\u0669\u0660 34", |
| String.format(arabic, "12 %,d 34", 1234567890)); |
| // And three localized floating point formats: |
| assertEquals("12 \u0661\u066b\u0662\u0663\u0660\u0627\u0633+\u0660\u0660 34", |
| String.format(arabic, "12 %.3e 34", 1.23)); |
| assertEquals("12 \u0661\u066b\u0662\u0663\u0660 34", |
| String.format(arabic, "12 %.3f 34", 1.23)); |
| assertEquals("12 \u0661\u066b\u0662\u0663 34", |
| String.format(arabic, "12 %.3g 34", 1.23)); |
| // And date/time formatting (we assume that all time/date number formatting is done by the |
| // same code, so this is representative): |
| Calendar c = Calendar.getInstance(TimeZone.getTimeZone("GMT-08:00")); |
| c.setTimeInMillis(0); |
| assertEquals("12 \u0661\u0666:\u0660\u0660:\u0660\u0660 34", |
| String.format(arabic, "12 %tT 34", c)); |
| // These shouldn't get localized: |
| assertEquals("1234", String.format(arabic, "1234")); |
| assertEquals("1234", String.format(arabic, "%s", "1234")); |
| assertEquals("1234", String.format(arabic, "%s", 1234)); |
| assertEquals("2322", String.format(arabic, "%o", 1234)); |
| assertEquals("4d2", String.format(arabic, "%x", 1234)); |
| assertEquals("0x1.0p0", String.format(arabic, "%a", 1.0)); |
| } |
| |
| // http://b/2301938 |
| public void test_uppercaseConversions() throws Exception { |
| // In most locales, the upper-case equivalent of "i" is "I". |
| assertEquals("JAKOB ARJOUNI", String.format(Locale.US, "%S", "jakob arjouni")); |
| // In Turkish-language locales, there's a dotted capital "i". |
| assertEquals("JAKOB ARJOUN\u0130", String.format(new Locale("tr", "TR"), "%S", "jakob arjouni")); |
| } |
| |
| // Creating a NumberFormat is expensive, so we like to reuse them, but we need to be careful |
| // because they're mutable. |
| public void test_NumberFormat_reuse() throws Exception { |
| assertEquals("7.000000 7", String.format("%.6f %d", 7.0, 7)); |
| } |
| |
| public void test_grouping() throws Exception { |
| // The interesting case is -123, where you might naively output "-,123" if you're just |
| // inserting a separator every three characters. The cases where there are three digits |
| // before the first separator may also be interesting. |
| assertEquals("-1", String.format("%,d", -1)); |
| assertEquals("-12", String.format("%,d", -12)); |
| assertEquals("-123", String.format("%,d", -123)); |
| assertEquals("-1,234", String.format("%,d", -1234)); |
| assertEquals("-12,345", String.format("%,d", -12345)); |
| assertEquals("-123,456", String.format("%,d", -123456)); |
| assertEquals("-1,234,567", String.format("%,d", -1234567)); |
| assertEquals("-12,345,678", String.format("%,d", -12345678)); |
| assertEquals("-123,456,789", String.format("%,d", -123456789)); |
| assertEquals("1", String.format("%,d", 1)); |
| assertEquals("12", String.format("%,d", 12)); |
| assertEquals("123", String.format("%,d", 123)); |
| assertEquals("1,234", String.format("%,d", 1234)); |
| assertEquals("12,345", String.format("%,d", 12345)); |
| assertEquals("123,456", String.format("%,d", 123456)); |
| assertEquals("1,234,567", String.format("%,d", 1234567)); |
| assertEquals("12,345,678", String.format("%,d", 12345678)); |
| assertEquals("123,456,789", String.format("%,d", 123456789)); |
| } |
| |
| public void test_formatNull() throws Exception { |
| // We fast-path %s and %d (with no configuration) but need to make sure we handle the |
| // special case of the null argument... |
| assertEquals("null", String.format(Locale.US, "%s", (String) null)); |
| assertEquals("null", String.format(Locale.US, "%d", (Integer) null)); |
| // ...without screwing up conversions that don't take an argument. |
| assertEquals("%", String.format(Locale.US, "%%")); |
| } |
| |
| // Alleged regression tests for historical bugs. (It's unclear whether the bugs were in |
| // BigDecimal or Formatter.) |
| public void test_BigDecimalFormatting() throws Exception { |
| BigDecimal[] input = new BigDecimal[] { |
| new BigDecimal("20.00000"), |
| new BigDecimal("20.000000"), |
| new BigDecimal(".2"), |
| new BigDecimal("2"), |
| new BigDecimal("-2"), |
| new BigDecimal("200000000000000000000000"), |
| new BigDecimal("20000000000000000000000000000000000000000000000000") |
| }; |
| String[] output = new String[] { |
| "20.00", |
| "20.00", |
| "0.20", |
| "2.00", |
| "-2.00", |
| "200000000000000000000000.00", |
| "20000000000000000000000000000000000000000000000000.00" |
| }; |
| for (int i = 0; i < input.length; ++i) { |
| String result = String.format("%.2f", input[i]); |
| assertEquals("input=\"" + input[i] + "\", " + ",expected=" + output[i] + ",actual=" + result, |
| output[i], result); |
| } |
| } |
| } |