Fixtures

Exercise 1: A module for test data

Create a new module conftest.py with a string variable that contains a sentence with lots of special characters:

sample = """That #§&%$* program still doesn't work!
I already de-bugged it 3 times, and still numpy.array keeps raising AttributeErrors. What should I do?"""

Create a function that returns a mobydick.TextCorpus object with the sample text above. Use the following as a header:

@pytest.fixture
def sample_corpus():
    ...

Exercise 2: Using the fixture

Now create a module test_sample.py with a function that uses the fixture:

def test_sample_text(sample_corpus):
    assert sample_corpus.n_words == 77

Execute the module with pytest. Note that you do not need to import conftest. Pytest does that automatically.

Exercise 3: Create more fixtures

Create fixtures for the two text corpora in the files mobydick_full.txt and mobydick_summary.txt as well.

Exercise 4: Fixtures from fixtures

Create a fixture in conftest.py that uses another fixture:

from mobydick import WordCounter
@pytest.fixture
def counter(mobydick_summary):
    return WordCounter(mobydick_summary)

Write a simple test that makes sure the fixture is not None