| /* |
| * Copyright (c) 1997, 2016, 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 |
| * @summary round trip test NumberFormat |
| * @library /java/text/testlib |
| * @key randomness |
| */ |
| |
| import java.text.*; |
| import java.util.*; |
| |
| /** |
| * This class tests the round-trip behavior of NumberFormat, DecimalFormat, and DigitList. |
| * Round-trip behavior is tested by taking a numeric value and formatting it, then |
| * parsing the resulting string, and comparing this result with the original value. |
| * Two tests are applied: String preservation, and numeric preservation. String |
| * preservation is exact; numeric preservation is not. However, numeric preservation |
| * should extend to the few least-significant bits. |
| * //bug472 |
| */ |
| public class NumberRoundTrip extends IntlTest { |
| static final boolean STRING_COMPARE = true; |
| static final boolean EXACT_NUMERIC_COMPARE = false; |
| static final double MAX_ERROR = 1e-14; |
| static boolean DEBUG = false; |
| static double max_numeric_error = 0; |
| static double min_numeric_error = 1; |
| |
| String localeName, formatName; |
| |
| public static void main(String[] args) throws Exception { |
| if (args.length > 0 && args[0].equals("-debug")) { |
| DEBUG = true; |
| String[] newargs = new String[args.length - 1]; |
| System.arraycopy(args, 1, newargs, 0, newargs.length); |
| args = newargs; |
| } |
| new NumberRoundTrip().run(args); |
| } |
| |
| public void TestNumberFormatRoundTrip() { |
| logln("Default Locale"); |
| localeName = "Default Locale"; |
| formatName = "getInstance"; |
| doTest(NumberFormat.getInstance()); |
| formatName = "getNumberInstance"; |
| doTest(NumberFormat.getNumberInstance()); |
| formatName = "getCurrencyInstance"; |
| doTest(NumberFormat.getCurrencyInstance()); |
| formatName = "getPercentInstance"; |
| doTest(NumberFormat.getPercentInstance()); |
| |
| Locale[] loc = NumberFormat.getAvailableLocales(); |
| for (int i=0; i<loc.length; ++i) { |
| logln(loc[i].getDisplayName()); |
| localeName = loc[i].toString(); |
| formatName = "getInstance"; |
| doTest(NumberFormat.getInstance(loc[i])); |
| formatName = "getNumberInstance"; |
| doTest(NumberFormat.getNumberInstance(loc[i])); |
| formatName = "getCurrencyInstance"; |
| doTest(NumberFormat.getCurrencyInstance(loc[i])); |
| formatName = "getPercentInstance"; |
| doTest(NumberFormat.getPercentInstance(loc[i])); |
| } |
| |
| logln("Numeric error " + |
| min_numeric_error + " to " + |
| max_numeric_error); |
| } |
| |
| public void doTest(NumberFormat fmt) { |
| doTest(fmt, Double.NaN); |
| doTest(fmt, Double.POSITIVE_INFINITY); |
| doTest(fmt, Double.NEGATIVE_INFINITY); |
| |
| doTest(fmt, 500); |
| doTest(fmt, 0); |
| doTest(fmt, 5555555555555555L); |
| doTest(fmt, 55555555555555555L); |
| doTest(fmt, 9223372036854775807L); |
| doTest(fmt, 9223372036854775808.0); |
| doTest(fmt, -9223372036854775808L); |
| doTest(fmt, -9223372036854775809.0); |
| |
| for (int i=0; i<2; ++i) { |
| doTest(fmt, randomDouble(1)); |
| doTest(fmt, randomDouble(10000)); |
| doTest(fmt, Math.floor(randomDouble(10000))); |
| doTest(fmt, randomDouble(1e50)); |
| doTest(fmt, randomDouble(1e-50)); |
| doTest(fmt, randomDouble(1e100)); |
| // The use of double d such that isInfinite(100d) causes the |
| // numeric test to fail with percent formats (bug 4266589). |
| // Largest double s.t. 100d < Inf: d=1.7976931348623156E306 |
| doTest(fmt, randomDouble(1e306)); |
| doTest(fmt, randomDouble(1e-323)); |
| doTest(fmt, randomDouble(1e-100)); |
| } |
| } |
| |
| /** |
| * Return a random value from -range..+range. |
| */ |
| public double randomDouble(double range) { |
| double a = Math.random(); |
| return (2.0 * range * a) - range; |
| } |
| |
| public void doTest(NumberFormat fmt, double value) { |
| doTest(fmt, Double.valueOf(value)); |
| } |
| |
| public void doTest(NumberFormat fmt, long value) { |
| doTest(fmt, Long.valueOf(value)); |
| } |
| |
| static double proportionalError(Number a, Number b) { |
| double aa = a.doubleValue(), bb = b.doubleValue(); |
| double error = aa - bb; |
| if (aa != 0 && bb != 0) error /= aa; |
| return Math.abs(error); |
| } |
| |
| public void doTest(NumberFormat fmt, Number value) { |
| fmt.setMaximumFractionDigits(Integer.MAX_VALUE); |
| String s = fmt.format(value), s2 = null; |
| Number n = null; |
| String err = ""; |
| try { |
| if (DEBUG) logln(" " + value + " F> " + escape(s)); |
| n = fmt.parse(s); |
| if (DEBUG) logln(" " + escape(s) + " P> " + n); |
| s2 = fmt.format(n); |
| if (DEBUG) logln(" " + n + " F> " + escape(s2)); |
| |
| if (STRING_COMPARE) { |
| if (!s.equals(s2)) { |
| if (fmt instanceof DecimalFormat) { |
| logln("Text mismatch: expected: " + s + ", got: " + s2 + " --- Try BigDecimal parsing."); |
| ((DecimalFormat)fmt).setParseBigDecimal(true); |
| n = fmt.parse(s); |
| if (DEBUG) logln(" " + escape(s) + " P> " + n); |
| s2 = fmt.format(n); |
| if (DEBUG) logln(" " + n + " F> " + escape(s2)); |
| ((DecimalFormat)fmt).setParseBigDecimal(false); |
| |
| if (!s.equals(s2)) { |
| err = "STRING ERROR(DecimalFormat): "; |
| } |
| } else { |
| err = "STRING ERROR(NumberFormat): "; |
| } |
| } |
| } |
| |
| if (EXACT_NUMERIC_COMPARE) { |
| if (value.doubleValue() != n.doubleValue()) { |
| err += "NUMERIC ERROR: "; |
| } |
| } else { |
| // Compute proportional error |
| double error = proportionalError(value, n); |
| |
| if (error > MAX_ERROR) { |
| err += "NUMERIC ERROR " + error + ": "; |
| } |
| |
| if (error > max_numeric_error) max_numeric_error = error; |
| if (error < min_numeric_error) min_numeric_error = error; |
| } |
| |
| String message = value + typeOf(value) + " F> " + |
| escape(s) + " P> " + |
| n + typeOf(n) + " F> " + |
| escape(s2); |
| if (err.length() > 0) { |
| errln("*** " + err + " with " + |
| formatName + " in " + localeName + |
| " " + message); |
| } else { |
| logln(message); |
| } |
| } catch (ParseException e) { |
| errln("*** " + e.toString() + " with " + |
| formatName + " in " + localeName); |
| } |
| } |
| |
| static String typeOf(Number n) { |
| if (n instanceof Long) return " Long"; |
| if (n instanceof Double) return " Double"; |
| return " Number"; |
| } |
| |
| static String escape(String s) { |
| StringBuffer buf = new StringBuffer(); |
| for (int i=0; i<s.length(); ++i) { |
| char c = s.charAt(i); |
| if (c < (char)0xFF) { |
| buf.append(c); |
| } else { |
| buf.append("\\U"); |
| buf.append(Integer.toHexString((c & 0xF000) >> 12)); |
| buf.append(Integer.toHexString((c & 0x0F00) >> 8)); |
| buf.append(Integer.toHexString((c & 0x00F0) >> 4)); |
| buf.append(Integer.toHexString(c & 0x000F)); |
| } |
| } |
| return buf.toString(); |
| } |
| } |