Add main file (#31)

* Add __main__ file

* Rename cli to indicate it is internal

* Add prog_name to cli invocation in __main__.py

* Update changelog

CHANGELOG.md

@@ -5,6 +5,8 @@ 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]
+- Add support for running `python -m functions_framework` ([#31])
+- Move `functions_framework.cli.cli` to `functions_framework._cli._cli`
 
 ## [1.2.0] - 2020-02-20
 ### Added
@@ -41,6 +43,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 [1.0.1]: https://github.com/GoogleCloudPlatform/functions-framework-python/releases/tag/v1.0.1
 [1.0.0]: https://github.com/GoogleCloudPlatform/functions-framework-python/releases/tag/v1.0.0
 
+[#31]: https://github.com/GoogleCloudPlatform/functions-framework-python/pull/31
 [#20]: https://github.com/GoogleCloudPlatform/functions-framework-python/pull/20
 [#14]: https://github.com/GoogleCloudPlatform/functions-framework-python/pull/14
 [#12]: https://github.com/GoogleCloudPlatform/functions-framework-python/pull/12

setup.py

@@ -51,9 +51,9 @@
     extras_require={"test": ["pytest", "tox"]},
     entry_points={
         "console_scripts": [
-            "functions-framework=functions_framework.cli:cli",
-            "functions_framework=functions_framework.cli:cli",
-            "ff=functions_framework.cli:cli",
+            "functions-framework=functions_framework._cli:_cli",
+            "functions_framework=functions_framework._cli:_cli",
+            "ff=functions_framework._cli:_cli",
         ]
     },
 )

src/functions_framework/__main__.py

@@ -0,0 +1,3 @@
+from functions_framework._cli import _cli
+
+_cli(prog_name="python -m functions_framework")

src/functions_framework/cli.py → src/functions_framework/_cli.py

@@ -32,7 +32,7 @@
 @click.option("--port", envvar="PORT", type=click.INT, default=8080)
 @click.option("--debug", envvar="DEBUG", is_flag=True)
 @click.option("--dry-run", envvar="DRY_RUN", is_flag=True)
-def cli(target, source, signature_type, host, port, debug, dry_run):
+def _cli(target, source, signature_type, host, port, debug, dry_run):
     app = create_app(target, source, signature_type)
     if dry_run:
         click.echo("Function: {}".format(target))

tests/test_cli.py

@@ -19,7 +19,7 @@
 
 import functions_framework
 
-from functions_framework.cli import cli
+from functions_framework._cli import _cli
 
 
 @pytest.fixture
@@ -30,13 +30,13 @@ def run():
 @pytest.fixture
 def create_app(monkeypatch, run):
     create_app = pretend.call_recorder(lambda *a, **kw: pretend.stub(run=run))
-    monkeypatch.setattr(functions_framework.cli, "create_app", create_app)
+    monkeypatch.setattr(functions_framework._cli, "create_app", create_app)
     return create_app
 
 
 def test_cli_no_arguments():
     runner = CliRunner()
-    result = runner.invoke(cli)
+    result = runner.invoke(_cli)
 
     assert result.exit_code == 2
     assert "Missing option '--target'" in result.output
@@ -98,7 +98,7 @@ def test_cli_no_arguments():
 )
 def test_cli_arguments(create_app, run, args, env, create_app_calls, run_calls):
     runner = CliRunner(env=env)
-    result = runner.invoke(cli, args)
+    result = runner.invoke(_cli, args)
 
     assert result.exit_code == 0
     assert create_app.calls == create_app_calls