Pytest - run multiple tests from a single file

python selenium pytest

17,397

Solution 1

You don't have to run your tests manually. Pytest finds and executes them automatically:

# tests/test_positive.py
def test_pos_1():
    populate_page()
    check_values()

def test_pos_2():
    process_entry()
    validate_result()

and

# tests/test_negative.py
def test_neg_1():
    populate_page()
    validate_error()

If you then run

py.test

They should automatically be picked up.

You can then also select a single file

py.test -k tests/test_negative.py

or a single test

py.test -k test_neg_1

Solution 2

Start file names and tests with either `test_` or end with `_test.py`. Classes should begin with `Test`

Directory example:
|-- files
|--|-- stuff_in stuff
|--|--|-- blah.py
|--|-- example.py
|
|-- tests
|--|-- stuff_in stuff
|--|--|-- test_blah.py
|--|-- test_example.py

In terminal: $ py.test --cov=files/ tests/ or just $ py.test tests/ if you don't need code coverage. The test directory file path must be in your current directory path. Or an exact file path ofcourse

With the above terminal command ($ py.test tests/), pytest will search the tests/ directory for all files beginning with test_. The same goes for the file.

test_example.py

# imports here

def test_try_this():   
    assert 1 == 1
# or
class TestThis:
    assert 1 == 0
# or even:
def what_test():
    assert True

Solution 3

You need to change the class name

class Positive_tests: to--> class Test_Positive:

The class name should also start with "Test" in order to be discovered by Pytest. If you don't want to use "Test" in front of your class name you can configure that too, official doc here

17,397

Author by

ChrisG29

Updated on June 12, 2022

Comments

ChrisG29 almost 2 years
I'm using Pytest (Selenium) to execute my functional tests. I have the tests split across 2 files in the following structure:

My_Positive_Tests.py
```
class Positive_tests:


  def test_pos_1():
    populate_page()
    check_values()

  def test_pos_2():
    process_entry()
    validate_result()
```
My_Negative_Tests.py
```
class Negative_tests:
  def test_neg_1
    populate_page()
    validate_error()
```
The assertions are done within the functions (check_values, validate_result, validate_error). I'm trying to find a way to run all the tests from a single file, so that the main test file would look something like:

My_Test_Suite.py
```
test_pos_1() 
test_pos_2()
test_neg_1()
```
Then from the command line I would execute:
```
py.test --tb=short "C:\PycharmProjects\My_Project\MyTest_Suite.py" --html=report.html
```
Is it possible to do something like this? I've been searching and haven't been able to find out how to put the calls to those tests in a single file.
- SkylerHill-Sky almost 8 years
  
  could you update this post to accept an answer? or do you still have questions? @Chris
ChrisG29 almost 8 years

I tried running py.test from the directory that the tests are in, but then the output was "no tests ran in 0.03 seconds"
Nils Werner almost 8 years

Do you have the test_ prefix on both files and functions?
SkylerHill-Sky almost 8 years

Yes. If you're confused, I explained it with as much detail as I could
Nils Werner almost 8 years

Well, did you try what I wrote? Remove all classes etc. Because that is how pytest is supposed to work. Whatever you are trying is against pytest's design.
ChrisG29 almost 8 years

Thank you for all the help. I didn't have the tests prefixed with "test_". Once I did that and removed the classes it worked perfectly.
Kedar.Aitawdekar about 5 years

what if I wanted to have sequenced run for the test? e.g: wanted to execute file: test_one.py then test_two.py ?
Nils Werner about 5 years

@Kedar.Aitawdekar please ask this in a new Question