Examples of java.text.MessageFormat.toPattern()

java.text.MessageFormat.toPattern()
Returns a pattern representing the current state of the message format. The string is constructed from internal information and therefore does not necessarily equal the previously applied pattern. @return a pattern representing the current state of the message format

        "{0,date}", format.toPattern());
        format.applyPattern("{0, date, long}");
        assertTrue("Wrong long date format", format.getFormats()[0]
                .equals(DateFormat.getDateInstance(DateFormat.LONG)));
    assertEquals("Wrong long date pattern", 
        "{0,date,long}", format.toPattern());
        format.applyPattern("{0, date, full}");
        assertTrue("Wrong full date format", format.getFormats()[0]
                .equals(DateFormat.getDateInstance(DateFormat.FULL)));
    assertEquals("Wrong full date pattern", 
        "{0,date,full}", format.toPattern());

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        "{0,date,long}", format.toPattern());
        format.applyPattern("{0, date, full}");
        assertTrue("Wrong full date format", format.getFormats()[0]
                .equals(DateFormat.getDateInstance(DateFormat.FULL)));
    assertEquals("Wrong full date pattern", 
        "{0,date,full}", format.toPattern());


        format.applyPattern("{0, date, MMM d {hh:mm:ss}}");
    assertEquals("Wrong time/date format", " MMM d {hh:mm:ss}", ((SimpleDateFormat) (format
        .getFormats()[0])).toPattern());
    assertEquals("Wrong time/date pattern",

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        format.applyPattern("{0, date, MMM d {hh:mm:ss}}");
    assertEquals("Wrong time/date format", " MMM d {hh:mm:ss}", ((SimpleDateFormat) (format
        .getFormats()[0])).toPattern());
    assertEquals("Wrong time/date pattern", 
        "{0,date, MMM d {hh:mm:ss}}", format.toPattern());


        format.applyPattern("{0, number}");
        assertTrue("Wrong number format", format.getFormats()[0]
                .equals(NumberFormat.getNumberInstance()));
    assertEquals("Wrong number pattern",

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        format.applyPattern("{0, number}");
        assertTrue("Wrong number format", format.getFormats()[0]
                .equals(NumberFormat.getNumberInstance()));
    assertEquals("Wrong number pattern", 
        "{0,number}", format.toPattern());
        format.applyPattern("{0, number, currency}");
        assertTrue("Wrong currency number format", format.getFormats()[0]
                .equals(NumberFormat.getCurrencyInstance()));
    assertEquals("Wrong currency number pattern", 
        "{0,number,currency}", format.toPattern());

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        "{0,number}", format.toPattern());
        format.applyPattern("{0, number, currency}");
        assertTrue("Wrong currency number format", format.getFormats()[0]
                .equals(NumberFormat.getCurrencyInstance()));
    assertEquals("Wrong currency number pattern", 
        "{0,number,currency}", format.toPattern());
        format.applyPattern("{0, number, percent}");
        assertTrue("Wrong percent number format", format.getFormats()[0]
                .equals(NumberFormat.getPercentInstance()));
    assertEquals("Wrong percent number pattern", 
        "{0,number,percent}", format.toPattern());

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        "{0,number,currency}", format.toPattern());
        format.applyPattern("{0, number, percent}");
        assertTrue("Wrong percent number format", format.getFormats()[0]
                .equals(NumberFormat.getPercentInstance()));
    assertEquals("Wrong percent number pattern", 
        "{0,number,percent}", format.toPattern());
        format.applyPattern("{0, number, integer}");
        NumberFormat nf = NumberFormat.getInstance();
        nf.setMaximumFractionDigits(0);
        nf.setParseIntegerOnly(true);
        assertTrue("Wrong integer number format", format.getFormats()[0]

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        nf.setMaximumFractionDigits(0);
        nf.setParseIntegerOnly(true);
        assertTrue("Wrong integer number format", format.getFormats()[0]
                .equals(nf));
    assertEquals("Wrong integer number pattern", 
        "{0,number,integer}", format.toPattern());


        format.applyPattern("{0, number, {'#'}##0.0E0}");


        /*
         * TODO validate these assertions

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        format.applyPattern("{0, choice,0#no|1#one|2#{1,number}}");
    assertEquals("Wrong choice format",
        
            "0.0#no|1.0#one|2.0#{1,number}", ((ChoiceFormat) format.getFormats()[0]).toPattern());
    assertEquals("Wrong choice pattern", 
        "{0,choice,0.0#no|1.0#one|2.0#{1,number}}", format.toPattern());
    assertEquals("Wrong formatted choice", "3.6", format.format(
        new Object[] { new Integer(2), new Float(3.6) }));


        try {
            format.applyPattern("WRONG MESSAGE FORMAT {0,number,{}");

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     */
    public void test_toPattern() {
        // Test for method java.lang.String java.text.MessageFormat.toPattern()
        String pattern = "[{0}]";
        MessageFormat mf = new MessageFormat(pattern);
        assertTrue("Wrong pattern", mf.toPattern().equals(pattern));
        
        // Regression for HARMONY-59
        new MessageFormat("CHOICE {1,choice}").toPattern();
    }

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        testLocales.add(null);


        for (Iterator l = testLocales.iterator(); l.hasNext();) {
            Locale locale = (Locale) l.next();
            MessageFormat builtins = createMessageFormat(builtinsPattern, locale);
            String expectedPattern = extendedPattern + builtins.toPattern();;
            DateFormat df = null;
            NumberFormat nf = null;
            ExtendedMessageFormat emf = null;
            if (locale == null) {
                df = DateFormat.getDateInstance(DateFormat.SHORT);

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