Back to Repositories

Testing Man Command Space Correction Rule in thefuck

A test suite for validating the ‘man_no_space’ rule functionality in thefuck project, which handles incorrect man page commands where spaces are missing. The tests verify command matching and correction behavior for the man command syntax.

Test Coverage Overview

The test suite provides comprehensive coverage for the man_no_space rule functionality.

Key areas tested include:

Command pattern matching for invalid man commands
Command transformation logic for adding proper spacing
Negative test cases for non-matching scenarios

Integration points focus on the Command type interaction and rule implementation.

Implementation Analysis

The testing approach utilizes pytest’s assertion framework to validate the rule’s matching and command correction logic. The implementation follows a clear pattern of testing both the match() and get_new_command() functions separately, ensuring proper isolation of concerns.

Technical implementation details:

Direct function testing with Command object inputs
Boolean assertions for match validation
String comparison for command correction verification

Technical Details

Testing tools and configuration:

Python unittest/pytest framework
Command type from thefuck.types
Direct import of rule functions
Simple assertion-based validation

Best Practices Demonstrated

The test suite demonstrates several testing best practices including function isolation, clear test case separation, and explicit assertion statements.

Notable practices:

Separate test functions for different rule aspects
Clear test case naming conventions
Minimal test setup requirements
Direct testing of public interfaces

nvbn/thefuck

tests/rules/test_man_no_space.py

            
from thefuck.rules.man_no_space import match, get_new_command
from thefuck.types import Command


def test_match():
    assert match(Command('mandiff', 'mandiff: command not found'))
    assert not match(Command('', ''))


def test_get_new_command():
    assert get_new_command(Command('mandiff', '')) == 'man diff'