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Testing Python Command Transformation Rules in thefuck

This test suite validates the Python command handling functionality in thefuck, focusing on permission-related command corrections and command execution patterns. The tests ensure proper command transformation when Python files encounter permission issues.

Test Coverage Overview

The test suite provides targeted coverage for Python command handling rules, specifically addressing permission denied scenarios and command transformations.

Tests permission denied error detection
Validates command transformation logic
Covers file path handling with Python prefix

Implementation Analysis

The testing approach utilizes pytest’s straightforward assertion patterns to verify command matching and transformation logic. The implementation focuses on two key functions: match() for identifying applicable scenarios and get_new_command() for generating corrected commands.

Command object pattern testing
Direct assertion validation
Function-level unit testing

Technical Details

The test suite leverages the following technical components:

pytest testing framework
Command type from thefuck.types
Custom rule module imports
Function-specific test cases

Best Practices Demonstrated

The test implementation showcases clean testing practices with focused test cases and clear assertions. Each test function addresses a specific aspect of the functionality with explicit input/output validation.

Single responsibility principle in test cases
Clear test function naming
Comprehensive positive and negative testing
Modular test organization

nvbn/thefuck

tests/rules/test_python_command.py

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


def test_match():
    assert match(Command('temp.py', 'Permission denied'))
    assert not match(Command('', ''))


def test_get_new_command():
    assert (get_new_command(Command('./test_sudo.py', ''))
            == 'python ./test_sudo.py')