Metadata-Version: 2.4
Name: pytest-fly
Version: 0.3.43
Summary: pytest runner and observer
Project-URL: Home, https://github.com/jamesabel/pytest-fly
Project-URL: Repository, https://github.com/jamesabel/pytest-fly
Project-URL: Documentation, https://github.com/jamesabel/pytest-fly#readme
Author-email: James Abel <j@abel.co>
Maintainer-email: James Abel <j@abel.co>
License: 
        The MIT License (MIT)
        
        Copyright (c) 2024 James Abel
        
        Permission is hereby granted, free of charge, to any person obtaining a copy
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        in the Software without restriction, including without limitation the rights
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        THE SOFTWARE.
License-File: LICENSE
Keywords: observer,pytest,testing
Classifier: Development Status :: 3 - Alpha
Classifier: Framework :: Pytest
Classifier: Intended Audience :: Developers
Classifier: License :: OSI Approved :: MIT License
Classifier: Operating System :: OS Independent
Classifier: Programming Language :: Python
Classifier: Programming Language :: Python :: 3 :: Only
Classifier: Programming Language :: Python :: 3.12
Classifier: Programming Language :: Python :: 3.13
Classifier: Programming Language :: Python :: 3.14
Classifier: Topic :: Software Development :: Testing
Requires-Python: >=3.12
Requires-Dist: attrs
Requires-Dist: balsa
Requires-Dist: coverage
Requires-Dist: hashy
Requires-Dist: humanize
Requires-Dist: ismain
Requires-Dist: msqlite
Requires-Dist: numpy
Requires-Dist: platformdirs
Requires-Dist: pref
Requires-Dist: psutil
Requires-Dist: py-cpuinfo
Requires-Dist: pyside6
Requires-Dist: pytest
Requires-Dist: tobool
Requires-Dist: typeguard
Requires-Dist: uuid6
Requires-Dist: watchdog
Description-Content-Type: text/markdown

# pytest-fly

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`pytest-fly` aids the development, debug, and execution of complex code bases and test suites.

## Features

- Real-time monitoring of test execution in a GUI with six tabs:
  - **Run** — start/stop controls, parallelism and run-mode selectors (Restart or Resume; Resume
    behaves as Check unless the Configuration tab's *Resume Without Program Check* is set), and
    several panels: a Status panel (completion percentage, pass rate, per-state counts, elapsed
    time, average parallelism, coverage, and estimated time remaining), a System Performance
    panel (live CPU and memory charts, with memory shown as used/total GB alongside percent), a
    Failed Tests panel with clipboard copy, a Live Output panel streaming pytest output from the
    running tests, and program-under-test version/dirty-git indicators
  - **Graph** — time-based progress chart showing each test module as a horizontal bar
  - **Table** — per-test status grid with elapsed time, peak CPU, memory usage, and individual coverage
  - **Coverage** — line chart of combined code coverage over time with covered/total line counts
  - **Configuration** — Resume-vs-Check toggle, a reorderable test-ordering aspect list, process
    count, refresh rate, utilization thresholds, tooltip line limit, system-metrics chart window,
    Progress Graph font size, target project path, and an Expert group (verbose logging, UI
    performance logging)
  - **About** — system and project information
- Parallel test execution at the module level with configurable process count.
- Three run modes — **Restart** (rerun all tests), **Resume** (skip already-passed tests and
  only re-run failed or unrun tests), and **Check** (resume if the program under test has not
  changed, otherwise restart).
- Graceful interruption — stop the test suite and resume where it left off.
- Per-process resource monitoring — tracks peak CPU and memory usage for each test module.
- Estimated time remaining based on prior run durations, accounting for parallelism.
- Code coverage tracking — each test writes its own coverage data, combined automatically as tests
complete. The Coverage tab plots coverage over time, and the Table shows per-test coverage.
Coverage persists across restarts so previously-passed tests contribute to the total.
- Singleton test support via `@pytest.mark.singleton` — singleton tests run exclusively with no other tests
executing concurrently.

## Installation

You can install `pytest-fly` via `pip` from `PyPI`:

```
pip install pytest-fly
```

## Parallelism

By default, `pytest-fly` executes *modules* (.py files) in parallel. 

Functions *inside* a module are executed serially with respect to each other. No parallelism is performed for 
functions inside a module. For example, if a set of tests use a shared resource that does not support concurrent 
access, putting those tests in the same module ensures the tests do not conflict.

Modules can optionally be marked as a singleton via the `@pytest.mark.singleton` marker. When a singleton test 
runs, all other workers wait until it completes before starting new tests. This is enforced at runtime, not 
just by scheduling order.

In `pytest` terms, each module is run in a separate subprocess. Therefore, a pytest fixture with a `session` scope 
will actually be executed multiple times, once for each module.

Note that test concurrency in `pytest-fly` is different from `pytest-xdist`. `group-by` in `pytest-xdist` is
analogous to putting the tests in the same module in `pytest-fly`.

## Test Scheduling

`pytest-fly` orders tests to surface actionable information earlier. The Configuration tab's
**Test Ordering** widget is a reorderable, per-row-checkable list of aspects — each can be
individually enabled/disabled, and its position in the list sets priority (topmost enabled row
is the primary sort; rows below it break ties). The available aspects are:

- **Failed tests** — tests that failed in the prior run run first, so developers get faster
  feedback on tests they are likely fixing.
- **Never-run tests** — tests with no record in the database (across any program-under-test
  version) run first, giving developers adding new tests immediate feedback.
- **Longest prior execution time** — slowest passing tests run first, helping parallel runs by
  starting the critical path earliest so shorter tests backfill the remaining workers.
- **Coverage efficiency (lines/sec)** — tests with the highest lines-covered-per-second run
  first, so if there is a problem in the code it is more likely to be found earlier in the run.

All aspects apply in every run mode, including Restart — prior-run data shapes execution *order*,
not *which* tests run. Tests missing the data an aspect needs tie for last under that aspect.
`singleton` tests always run last, regardless of these settings, to maximize parallel throughput
before exclusive execution begins.
