Method test05_maxFieldsExceeded

tables/tests/test_create.py:183–219

Checking an excess of the maximum number of fields in tables

(self)

    # The next limitation has been released. A warning is still there, though
    def test05_maxFieldsExceeded(self):
        """Checking an excess of the maximum number of fields in tables"""

        # The number of fields for a table
        varnumber = tb.parameters.MAX_COLUMNS + 1

        varnames = []
        for i in range(varnumber):
            varnames.append("int%d" % i)

        # Build a dictionary with the types as values and varnames as keys
        recordDict = {}
        i = 0
        for varname in varnames:
            recordDict[varname] = tb.Col.from_type("int32", dflt=1)
            i += 1

        # Now, create a table with this record object
        # This way of creating node objects has been deprecated
        # table = Table(recordDict, "MetaRecord instance")

        # Attach the table to object tree
        warnings.filterwarnings("error", category=tb.PerformanceWarning)
        # Here, a tables.PerformanceWarning should be raised!
        try:
            self.h5file.create_table(
                self.root, "table", recordDict, "MetaRecord instance"
            )
        except tb.PerformanceWarning:
            if common.verbose:
                type, value, traceback = sys.exc_info()
                print("\nGreat!, the next PerformanceWarning was catched!")
                print(value)
        else:
            self.fail("expected an tables.PerformanceWarning")
        # Reset the warning
        warnings.filterwarnings("default", category=tb.PerformanceWarning)

    # The next limitation has been released
    def _test06_maxColumnNameLengthExceeded(self):