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Testing Git Pull Uncommitted Changes Handler in TheFuck

This test suite validates the functionality of the git_pull_uncommitted_changes rule in TheFuck project, specifically handling scenarios where git pull fails due to unstaged changes. The tests ensure proper error detection and command correction behavior.

Test Coverage Overview

The test coverage focuses on validating the git pull command handling when encountering unstaged changes.

Key areas tested include:

Error message pattern matching for unstaged changes
Command matching validation for git pull scenarios
Verification of correct command transformation

Integration points cover the interaction between git commands and stash operations.

Implementation Analysis

The testing approach utilizes pytest fixtures to provide consistent test data and isolated test cases.

Notable patterns include:

Fixture-based test data management
Command object usage for input/output handling
Boolean assertion chains for match validation

The implementation leverages pytest’s fixture decoration and assertion utilities.

Technical Details

Testing tools and configuration:

pytest as the primary testing framework
Custom Command type for command representation
Fixture-based test data injection
Direct function testing without mocking

Best Practices Demonstrated

The test suite demonstrates several testing best practices in Python unit testing.

Notable practices include:

Separation of test cases for matching and command generation
Clear test function naming conventions
Efficient use of fixtures for test data management
Comprehensive positive and negative test cases

nvbn/thefuck

tests/rules/test_git_pull_uncommitted_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: You have unstaged 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")