Method test08b

tables/tests/test_tables.py:4697–4739

Setting values on a large table without calling Row.update

(self)

        self.assertEqual(table.nrows, nrows)

    def test08b(self):
        """Setting values on a large table without calling Row.update"""

        # Create a new table:
        table = self.h5file.create_table(self.h5file.root, "recarray", Rec)
        table.nrowsinbuf = self.buffersize  # set buffer value

        nrows = 100
        # append new rows
        row = table.row
        for i in range(nrows):
            row["col1"] = i - 1
            row["col2"] = "a" + str(i - 1)
            row["col3"] = -1.0
            row.append()
        table.flush()

        # Modify all the rows (actually don't)
        for row in table:
            row["col1"] = row.nrow
            row["col2"] = "b" + str(row.nrow)
            row["col3"] = 0.0
            # row.update()

        # Create the modified recarray
        r1 = np.rec.array(
            None, shape=nrows, formats="i4,S3,f8", names="col1,col2,col3"
        )
        for i in range(nrows):
            r1["col1"][i] = i - 1
            r1["col2"][i] = "a" + str(i - 1)
            r1["col3"][i] = -1.0
        # Read the modified table
        if self.reopen:
            self._reopen()
            table = self.h5file.root.recarray
            table.nrowsinbuf = self.buffersize  # set buffer value
        r2 = table.read()
        if common.verbose:
            print("Original table-->", repr(r2))
            print("Should look like-->", repr(r1))
        self.assertEqual(r1.tobytes(), r2.tobytes())
        self.assertEqual(table.nrows, nrows)

    def test09(self):
        """Modifying selected values on a large table"""