204 lines
8.2 KiB
Markdown
204 lines
8.2 KiB
Markdown
# poetry-slam
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An opinionated build tool for python poetry projects. poetry-slam saves me having to add optional dev dependencies and boilerplate build scripts to every project for things like tests, coverage, package installation, automatic formatting and &c.
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### What It Does
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* installs isort, autoflake, and black
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* adds pytest and pytest-cov as dev dependencies to your `pyproject.toml` (optional)
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* adds opinionated defaults for isort, autoflake, black, pytest, and pytest-cov (optional)
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## Installation
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Clone the repository and install poetry-slam locally. You need the following prerequisites:
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* python
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* poetry
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```bash
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% git clone https://github.com/evilchili/poetry-slam.git
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% cd poetry-slam
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% poetry run slam build
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% pip3 install dist/*.whl
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```
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## Starting a New Project
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poetry-slam can generate a boilerplate python project with a cli:
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```bash
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% mkdir /tmp/test_project
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% cd /tmp/test_project
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% git init
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Initialized empty Git repository in /tmp/test_project/.git/
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% slam new test_project
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Added poetry-slam defaults to pyproject.toml
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Formatting...
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Installing...
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Testing...
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========== test session starts ==========
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platform linux -- Python 3.10.12, pytest-8.1.1, pluggy-1.4.0
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rootdir: /tmp/test_project
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configfile: pyproject.toml
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plugins: cov-5.0.0
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collected 1 item
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test/test_test_project.py x [100%]
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test/test_test_project_cli.py x [100%]
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---------- coverage: platform linux, python 3.10.12-final-0 ----------
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Name Stmts Miss Cover Missing
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------------------------------------------------------------
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src/test_project/__init__.py 0 0 100%
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src/test_project/cli.py 23 9 61% 37-50, 57
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------------------------------------------------------------
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TOTAL 23 9 61%
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========== 2 xfailed in 0.11s ==========
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Building...
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slam build: SUCCESS
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Successfully initialized new default project test_project.
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```
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## Configuring An Existing Project
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poetry-slam expects your package python source in `src/` and your tests in `test/`.
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You'll probably want this configuration in your `pyproject.toml`, but poetry-slam won't do this for you:
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```toml
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packages = [
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{include = "*", from = "src"},
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]
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```
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#### Initializing poetry-slam
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The first time you use poetry-slam in a new project, it's a good idea to run `slam init`. This will add opinionated defaults for the build tooling directly to your `pyproject.toml`. It will also add both pytest and pytest-cov as dependencies in your dev group.
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```bash
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% cd /some/poetry-project/
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% slam init
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Added poetry-slam defaults to pyproject.toml
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% poetry update
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```
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#### What You Don't Need
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Aside from pytest and pytest-cov, which poetry-slam will add for you, You don't need other dependencies in your project's dev group. When you install poetry-slam you will also get isort and friends if they aren't already present, and these tools will automatically load configuration from the first `pyproject.toml` they find in your directory hierarchy.
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You also don't need tool-specific configuration files or global defaults, since the configs are added directly to your `pyproject.toml`.
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### The Build Loop
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The most common usage and the default if no command is specified is to do a `build`, which will:
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* format your source with isort, autoflake, and black;
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* run all tests;
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* (re)install the packages in your project virtual environment; and
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* build a release in `dist/`.
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```bash
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% slam
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Formatting...
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Testing...
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Installing...
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Building...
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slam build: SUCCESS
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```
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You can also run individual steps; see `slam --help` for details:
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```bash
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% slam --help
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Usage: slam [OPTIONS] COMMAND [ARGS]...
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╭─ Options ──────────────────────────────────────────────────────────────────────╮
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│ --verbose --no-verbose Enable verbose output. │
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│ [default: no-verbose] │
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│ --log-level TEXT Set the log level. │
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│ [default: error] │
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│ --poetry PATH Path to the poetry executable; │
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│ defaults to the first in your │
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│ path. │
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│ [default: poetry] │
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│ --install-completion Install completion for the │
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│ current shell. │
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│ --show-completion Show completion for the current │
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│ shell, to copy it or customize │
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│ the installation. │
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│ --help Show this message and exit. │
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╰────────────────────────────────────────────────────────────────────────────────╯
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╭─ Commands ─────────────────────────────────────────────────────────────────────╮
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│ build Calls format, test, and install before invoking 'poetry build'. │
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│ format Run isort, autoflake, and black on the src/ and test/ directories. │
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│ init Add opinionated defaults to your pyproject.toml. │
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│ install Synonym for 'poetry install' │
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│ test Synonym for 'poetry run pytest' Output is always verbose. │
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╰────────────────────────────────────────────────────────────────────────────────╯
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```
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## Testing With Pytest
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Anything passed to `slam test` will be passed directly to pytest as command-line arguments. So for example:
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```bash
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% slam test -vv -k test_this_one_thing
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```
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## Debugging
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Get gory details with the combination of `--verbose` and `--log-level` most suitable to your liking:
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```bash
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% slam --verbose --log-level=DEBUG build
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Formatting...
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[03/25/24 22:21:32] INFO poetry run isort src test build_tool.py:29
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INFO poetry run autoflake src test build_tool.py:29
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[03/25/24 22:21:33] INFO poetry run black src test build_tool.py:29
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All done! ✨ 🍰 ✨
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4 files left unchanged.
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Testing...
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INFO poetry run pytest build_tool.py:29
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============================ test session starts =============================
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platform linux -- Python 3.10.12, pytest-8.1.1, pluggy-1.4.0
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rootdir: /home/greg/dev/poetry-slam
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configfile: pytest.ini
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plugins: cov-4.1.0
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collected 5 items
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test/test_slam.py ..... [100%]
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---------- coverage: platform linux, python 3.10.12-final-0 ----------
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Name Stmts Miss Cover Missing
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-------------------------------------------------------------
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src/poetry_slam/__init__.py 0 0 100%
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src/poetry_slam/build_tool.py 51 5 90% 38-40, 44, 48
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src/poetry_slam/cli.py 37 37 0% 1-75
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-------------------------------------------------------------
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TOTAL 88 42 52%
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# ...and so on...
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```
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## Overriding the Defaults
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Why would you do that? Clearly my opinions are the best opinions. :D
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...but if you want to be wrong, run `slam init` and then modify the generated configuration to your liking. So long as you don't remove the slam comment:
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```
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### SLAM
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```
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running `slam init` again will not override your changes.
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