Back to Repositories

Testing Pacman Command Option Validation in thefuck

This test suite validates the pacman_invalid_option rule in thefuck project, focusing on handling invalid command line options in Pacman package manager commands. The tests ensure proper case sensitivity handling and command correction behavior.

Test Coverage Overview

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

Key areas tested include:

Valid command output scenarios
Invalid option detection
Case sensitivity handling
Command correction verification

The tests specifically validate both matching and non-matching conditions for various Pacman command options.

Implementation Analysis

The testing approach utilizes pytest’s parametrize feature to efficiently test multiple command options. The implementation focuses on two main functions: match() for detecting invalid options and get_new_command() for generating corrected commands.

Test patterns include:

Parametrized test cases for different command options
Separate validation for good and bad command outputs
Command object handling with input and output verification

Technical Details

Testing tools and configuration:

pytest framework for test organization
Command class from thefuck.types for command representation
Parametrized test decorators for efficient test case handling
Mock command outputs for consistent testing

Best Practices Demonstrated

The test suite exemplifies several testing best practices:

Clear separation of test cases for different scenarios
Efficient use of pytest parametrization
Comprehensive edge case coverage
Consistent assertion patterns
Well-structured test organization

nvbn/thefuck

tests/rules/test_pacman_invalid_option.py

            
import pytest
from thefuck.rules.pacman_invalid_option import get_new_command, match
from thefuck.types import Command

good_output = """community/shared_meataxe 1.0-3
    A set of programs for working with matrix representations over finite fields
"""

bad_output = "error: invalid option '-"


@pytest.mark.parametrize("option", "SURQFDVT")
def test_not_match_good_output(option):
    assert not match(Command("pacman -{}s meat".format(option), good_output))


@pytest.mark.parametrize("option", "azxcbnm")
def test_not_match_bad_output(option):
    assert not match(Command("pacman -{}v meat".format(option), bad_output))


@pytest.mark.parametrize("option", "surqfdvt")
def test_match(option):
    assert match(Command("pacman -{}v meat".format(option), bad_output))


@pytest.mark.parametrize("option", "surqfdvt")
def test_get_new_command(option):
    new_command = get_new_command(Command("pacman -{}v meat".format(option), ""))
    assert new_command == "pacman -{}v meat".format(option.upper())