Supports updating of test results (if same test is run twice, correct row will...

        When inserting an entry, it might be a test being re-run. In that case,

        the row containing that test needs to be updated, as opposed to appending

        the entry to the end of the file.

        This method finds that row, returning the row number,

        or -1 in the case where that test is not in the report yet.

        """

        for cell in self.ws["A"]:

            if cell.value is None:

                return -1

            elif cell.value == id:

                print("MATCH with id {} at row {}".format(id, cell.row))

                return cell.row

        return -1

    def getLastRow(self):

        for cell in self.ws["A"]:

        return cell.row + 1

    def writeTestEntry(self, testEntry):

        existingEntryRow = self.getEntryWithId(testEntry.id)

        lastRow = self.getLastRow()

        # Use the above two values to pick a row

        entryRow = existingEntryRow if existingEntryRow != -1 else lastRow

        # Pick a cell color based on test outcome

        cellCol = ExcelWriter.PASS_COL if testEntry.result == "PASS" else ExcelWriter.FAIL_COL

        # Test entry as a list

        entryVals = testEntry.asList()

        for col, cellValue in zip(self.ws.iter_cols(min_row=lastRow, max_col=len(entryVals), max_row=lastRow), entryVals):

        for col, cellValue in zip(self.ws.iter_cols(min_row=entryRow, max_col=len(entryVals), max_row=entryRow), entryVals):

            for cell in col:

                cell.value = cellValue

                cell.fill = PatternFill("solid", fgColor=cellCol)# cellCol