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Testing Git Pull Error Handling in thefuck

This test suite validates the functionality of handling git pull operations with uncommitted changes in the thefuck command-line tool. It specifically tests error detection and command correction for scenarios where git pull fails due to uncommitted changes in the working directory.

Test Coverage Overview

The test suite provides comprehensive coverage of git pull error handling with uncommitted changes.

Key areas tested include:

Error message pattern matching for git pull failures
Command validation for both valid and invalid scenarios
Verification of the corrected command generation

Edge cases cover empty output and non-git commands to ensure proper behavior discrimination.

Implementation Analysis

The testing approach utilizes pytest fixtures to maintain consistent test data across multiple test cases. The implementation follows a pattern of separate match and command generation testing, common in command-line tool validation.

Framework-specific features include:

Pytest fixtures for test data management
Command object usage for input validation
Boolean assertion patterns for matching logic

Technical Details

Testing tools and configuration:

Pytest as the primary testing framework
Custom Command type for input handling
Mock git command output via fixtures
Direct assertion testing for command string matching

Best Practices Demonstrated

The test suite demonstrates several testing best practices including isolation of test cases, clear separation of concerns, and comprehensive error handling validation. Notable practices include:

Fixture usage for test data management
Negative test cases for invalid scenarios
Clear test function naming conventions
Focused test scope for specific functionality

nvbn/thefuck

tests/rules/test_git_pull_unstaged_changes.py

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


@pytest.fixture
def output():
    return '''error: Cannot pull with rebase: Your index contains uncommitted changes.'''


def test_match(output):
    assert match(Command('git pull', output))
    assert not match(Command('git pull', ''))
    assert not match(Command('ls', output))


def test_get_new_command(output):
    assert (get_new_command(Command('git pull', output))
            == "git stash && git pull && git stash pop")