RI's java.util.Formatter has inconsistent behavior on incompatible flags
handling: different kind of conversions has similar spec on this issue,
which only cover one flag "#" - "If the '#' flag is given, then a
FormatFlagsConversionMismatchException will be thrown", and most kind of
conversions in RI ignore other incompatible flags, but there is one kind
of conversion named as "general conversion" throws exception on all
incompatible flags.
For example, the sign flag of "+" is incompatible with both character
conversion and general conversion, and character conversion ignore it
while general conversion throws exception, the test case below shows the
difference:
public class FormatterTest extends TestCase {
public void testFormat() {
Formatter f = new Formatter(Locale.US);
//Character conversion, incompatible flag "+" is ignored
f.format("%+c", 'W');
assertEquals("W", f.toString());
f = new Formatter(Locale.US);
try {
//General conversion, incompatible flag "+" is reported
f.format("%+h", "hello");
fail("FormatFlagsConversionMismatchException is thrown on RI");
} catch (FormatFlagsConversionMismatchException e) {
// expected
}
}
}
Should we consider RI's behavior is not logical? or just make Harmony
comply with RI?
--
Paulex Yang
China Software Development Lab
IBM
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