tdf#117037: svl_qa_cppunit: Add unittest

Change-Id: I707f1a5402189a2453f5d11beb4e1c493699e28b
Reviewed-on: https://gerrit.libreoffice.org/c/core/+/148909
Tested-by: Jenkins
Reviewed-by: Xisco Fauli <xiscofauli@libreoffice.org>
diff --git a/svl/qa/unit/svl.cxx b/svl/qa/unit/svl.cxx
index a64abd5..557c9be 100644
--- a/svl/qa/unit/svl.cxx
+++ b/svl/qa/unit/svl.cxx
@@ -1173,14 +1173,15 @@ void Test::testIsNumberFormat()
        { "1999-11-23 12:34:56,789", false },   // comma not in en-US if 'T' separator is not present,
                                                // debatable, 'T' "may be omitted by mutual consent of those
                                                // interchanging data, if ambiguity can be avoided."
        { "1999-11-23T12:34:56/789", false }
        { "1999-11-23T12:34:56/789", false },
        { "−1000", true } // unicode minus
    };

    for (size_t i = 0; i < SAL_N_ELEMENTS(aTests); ++i)
    {
        sal_uInt32 nIndex = 0;
        double nNumber = 0;
        OUString aString = OUString::createFromAscii(aTests[i].pFormat);
        OUString aString = OUString::fromUtf8(aTests[i].pFormat);
        bool bIsNumber = aFormatter.IsNumberFormat(aString, nIndex, nNumber);
        CPPUNIT_ASSERT_EQUAL_MESSAGE(aTests[i].pFormat, aTests[i].bIsNumber, bIsNumber);