Back to Repositories

Testing Gulp Task Name Correction Implementation in TheFuck

This test suite validates the functionality of the ‘gulp_not_task’ rule in TheFuck, which handles mistyped Gulp task names. It verifies error detection and command correction for invalid Gulp tasks, ensuring the tool provides accurate suggestions for misspelled commands.

Test Coverage Overview

The test suite provides comprehensive coverage of the gulp_not_task rule functionality.

Key areas tested include:

Matching invalid Gulp task names
Command correction suggestions
Error message pattern recognition
Task name similarity matching

Edge cases cover different command formats and output patterns, ensuring robust error handling.

Implementation Analysis

The testing approach utilizes pytest’s parametrize feature for efficient test case variation. The implementation employs mocking techniques to simulate Gulp task outputs and command execution.

Technical patterns include:

BytesIO simulation for command output
Parametrized test cases for negative scenarios
Mock subprocess calls for task listing

Technical Details

Testing infrastructure includes:

pytest as the primary testing framework
pytest-mock for mocking functionality
BytesIO for stream simulation
Command class from thefuck.types

Configuration utilizes standard pytest fixtures and parametrization decorators.

Best Practices Demonstrated

The test suite exemplifies several testing best practices including isolation of test cases, comprehensive mock usage, and clear test organization.

Notable practices:

Separate positive and negative test cases
Mock external process calls
Parametrized test variations
Clear test function naming conventions

nvbn/thefuck

tests/rules/test_gulp_not_task.py

            
import pytest
from io import BytesIO
from thefuck.types import Command
from thefuck.rules.gulp_not_task import match, get_new_command


def output(task):
    return '''[00:41:11] Using gulpfile gulpfile.js
[00:41:11] Task '{}' is not in your gulpfile
[00:41:11] Please check the documentation for proper gulpfile formatting
'''.format(task)


def test_match():
    assert match(Command('gulp srve', output('srve')))


@pytest.mark.parametrize('script, stdout', [
    ('gulp serve', ''),
    ('cat srve', output('srve'))])
def test_not_march(script, stdout):
    assert not match(Command(script, stdout))


def test_get_new_command(mocker):
    mock = mocker.patch('subprocess.Popen')
    mock.return_value.stdout = BytesIO(b'serve 
build 
default 
')
    command = Command('gulp srve', output('srve'))
    assert get_new_command(command) == ['gulp serve', 'gulp default']