Playwright Python 10 | Data Driven Testing
In this session…
How to parameterize tests
How to get data from csv file
How to get data from json file
DEMO - How to do Data Driven Testing
Step 1 - Create a simple test that uses some data
Step 2 - Parameterize the test i.e. use variables in place of hard coded data values
pass values to the variables using @pytest.mark. parameterize() fixture
Using CSV File
Step 3 - Now store the test data in a csv file
Step 4 - In the test file create function to read and get data from csv file
Using JSON File
Step 5 - Create a json file and add the test data
Step 6 - In the test file create function to read and get data from json file
-
Function to get data from csv file
import csv
def get_csv_data():
data = []
with open("data.csv", newline="") as csvfile:
reader = csv.DictReader(csvfile)
for row in reader:
data.append((row["search_term"], row["expected_keyword"]))
return data
@pytest.mark.parametrize("username, password", get_csv_data())
def test_example(page: Page, username, password) -＞ None:
JSON file
[
{
"username": "Admin",
"password": "admin123"
},
{
"username": "Test1",
"password": "admin345"
},
{
"username": "Test2",
"password": "admin567"
}
]
Function to get data from json file
import json
def get_json_data():
with open("data.json") as f:
raw = json.load(f)
return [(item["search_term"], item["expected_keyword"]) for item in raw]
@pytest.mark.parametrize("username, password", get_json_data())
def test_example(page: Page, username, password) -＞ None:
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