In Robot Framework, how to perform data-driven testing by creating a separate test case for each line of data in a text file?

Question

In Robot Framework, we can use Test Template to perform data-driven testing. However, in this method, the number of test cases are fixed. We are not able to add new test cas

Answer 1

I feel below one is the better approach.

Create two libraries one for reading the csv data and another for getting the number of lines like below.

csvLibrary.py

 1 import csv
 2 class csvLibrary(object):
 3
 4     def read_csv_file(self, filename):
 5         '''This creates a keyword named "Read CSV File"
 6
 7         This keyword takes one argument, which is a path to a .csv file. It
 8         returns a list of rows, with each row being a list of the data in
 9         each column.
 10         '''
 11         data = []
 12         with open(filename, 'rb') as csvfile:
 13             reader = csv.reader(csvfile)
 14             for row in reader:
 15                 data.append(row)
 16         return data

csvLibraryNoOfRows.py

1 import csv
2 class csvLibraryNoOfRows(object):
3
4     def csv_length(self, filename):
5         '''This creates a keyword named "CSV Length"
6
7         This keyword takes one argument, which is a path to a .csv file. It
8         returns a list of rows, with each row being a list of the data in
9         each column.
10         '''
11         length=0
12         with open(filename, 'rb') as csvfile:
13             reader = csv.reader(csvfile)
14             for row in reader:
15                 length+=1
16         return length

Include these two libraries in your test files. Using length, lets say "N" you can get the row data/cell data with the help of :FOR ${index} IN RANGE ${csvlength}

Example code is below.

Library        csvLibrary.py
Library        csvLibraryNoOfRows.py

*** Test Cases ***

Reading a csv file
${csvdata}=    read csv file   sample.csv
${csvlength}=   csv length  sample.csv
:FOR    ${index}    IN RANGE    ${csvlength}
    \   log ${csvdata[${index}]}