Update to Typer 0.1.0

- Closes #19
- Remove click-completion dependency
- Add `--version` option
- Update CLI tests to use typer CliRunner

Author: dbanty

CHANGELOG.md

@@ -4,6 +4,10 @@ All notable changes to this project will be documented in this file.
 The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
+# Unreleased
+- Update Typer dependency to 0.1.0 and remove click-completion dependency
+- Add a `--version` option to print the version of openapi-python-client and exit
+
 ## 0.1.2 - 2020-03-16
 - Improve handling of optional properties in generated `to_dict` function for models
 - Add PEP 561 marker file (py.typed) to generated packages

openapi_python_client/__init__.py

@@ -3,6 +3,7 @@
 
 import json
 import shutil
+from importlib.metadata import version
 from pathlib import Path
 from typing import Any, Dict, Optional
 
@@ -11,6 +12,8 @@
 
 from .openapi_parser import OpenAPI, import_string_from_reference
 
+__version__ = version(__package__)
+
 
 def _get_project_for_url_or_path(url: Optional[str], path: Optional[Path]) -> _Project:
     data_dict = _get_json(url=url, path=path)

openapi_python_client/cli.py

@@ -6,8 +6,19 @@
 app = typer.Typer()
 
 
+def _version_callback(value: bool):
+    from openapi_python_client import __version__
+
+    if value:
+        typer.echo(f"openapi-python-client version: {__version__}")
+        raise typer.Exit()
+
+
+# noinspection PyUnusedLocal
 @app.callback()
-def cli() -> None:
+def cli(
+    version: bool = typer.Option(False, "--version", callback=_version_callback),
+) -> None:
     """ Generate a Python client from an OpenAPI JSON document """
     pass