fix AXIS2-6041 (totalDigits Facet of XSD type short incorrectly treat…

[sndurkin]

…ed in databinding)

This change builds on commit bb10ab2, which fixed compare(BigInteger, String) for AXIS2-5724, to fix the other variations for int, long, and short.

These variations seem to be invoked by the generated Java code when using different base types, such as the following:

<xsd:simpleType name="MyType">
  <xsd:restriction base="xsd:int">
    <xsd:totalDigits value="1"/>
  </xsd:restriction>
</xsd:simpleType>

This change also adds test cases for the variations.

[sndurkin]

Here's the (truncated) output of running ConverterUtilTest with the new tests before my changes:

$ mvn test -Dtest=org.apache.axis2.databinding.utils.ConverterUtilTest
[INFO] -------------------------------------------------------
[INFO]  T E S T S
[INFO] -------------------------------------------------------
[INFO] Running org.apache.axis2.databinding.utils.ConverterUtilTest
...
[INFO] Results:
[INFO]
[ERROR] Errors:
[ERROR]   ConverterUtilTest.testCompareIntIsGreaterThanOrEqualToTotalDigitsFacetRestriction:612 » NumberFormat For input string: "10.0"
[ERROR]   ConverterUtilTest.testCompareIntIsLessThanTotalDigitsFacetRestriction:605 » NumberFormat For input string: "10.0"
[ERROR]   ConverterUtilTest.testCompareLongIsGreaterThanOrEqualToTotalDigitsFacetRestriction:598 » NumberFormat For input string: "10.0"
[ERROR]   ConverterUtilTest.testCompareLongIsLessThanTotalDigitsFacetRestriction:591 » NumberFormat For input string: "10.0"
[ERROR]   ConverterUtilTest.testCompareShortIsGreaterThanOrEqualToTotalDigitsFacetRestriction:626 » NumberFormat For input string: "10.0"
[ERROR]   ConverterUtilTest.testCompareShortIsLessThanTotalDigitsFacetRestriction:619 » NumberFormat For input string: "10.0"
[INFO]
[ERROR] Tests run: 20, Failures: 0, Errors: 6, Skipped: 0
[INFO]
[INFO] ------------------------------------------------------------------------
[INFO] BUILD FAILURE
[INFO] ------------------------------------------------------------------------

And output after:

$ mvn test -Dtest=org.apache.axis2.databinding.utils.ConverterUtilTest
[INFO] -------------------------------------------------------
[INFO]  T E S T S
[INFO] -------------------------------------------------------
[INFO] Running org.apache.axis2.databinding.utils.ConverterUtilTest
[INFO] Tests run: 20, Failures: 0, Errors: 0, Skipped: 0, Time elapsed: 0.222 s -- in org.apache.axis2.databinding.utils.ConverterUtilTest
[INFO]
[INFO] Results:
[INFO]
[INFO] Tests run: 20, Failures: 0, Errors: 0, Skipped: 0
[INFO]
[INFO] ------------------------------------------------------------------------
[INFO] BUILD SUCCESS
[INFO] ------------------------------------------------------------------------