inst/unitTests/runit.workbook.getLastColumn.R

In miraisolutions/xlconnect: Excel Connector for R

#############################################################################
#
# XLConnect
# Copyright (C) 2010-2024 Mirai Solutions GmbH
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
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#############################################################################
#
# Tests around querying the last (non-empty) row of a worksheet
# 
# Author: Martin Studer, Mirai Solutions GmbH
#
#############################################################################

test.workbook.getLastColumn <- function() {
	
	# Create workbooks
	wb.xls <- loadWorkbook(rsrc("resources/testWorkbookGetLastRow.xls"), create = FALSE)
	wb.xlsx <- loadWorkbook(rsrc("resources/testWorkbookGetLastRow.xlsx"), create = FALSE)
	
	# Check if last row is determined correctly (*.xls)
	checkEquals(as.vector(getLastColumn(wb.xls, "mtcars")), 11)
	checkEquals(as.vector(getLastColumn(wb.xls, "mtcars2")), 15)
	checkEquals(as.vector(getLastColumn(wb.xls, "mtcars3")), 19)
	
	# Check if last row is determined correctly (*.xlsx)
	checkEquals(as.vector(getLastColumn(wb.xlsx, "mtcars")), 11)
	checkEquals(as.vector(getLastColumn(wb.xlsx, "mtcars2")), 15)
	checkEquals(as.vector(getLastColumn(wb.xlsx, "mtcars3")), 19)
	
	# Check that querying the last row of a non-existing worksheet throws an exception (*.xls)
	checkException(getLastColumn(wb.xls, "doesNotExist"))
	
	# Check that querying the last row of a non-existing worksheet throws an exception (*.xlsx)
	checkException(getLastColumn(wb.xlsx, "doesNotExist"))
	
	# Last column of an empty worksheet is 1 (.xls)
	checkEquals(getLastColumn(wb.xls, "empty"), c(empty = 1))
	
	# Last column of an empty worksheet is 1 (.xlsx)
	checkEquals(getLastColumn(wb.xlsx, "empty"), c(empty = 1))
}