From 3eecc2cec3a8cf1187bb64126067d328bda6b041 Mon Sep 17 00:00:00 2001
From: Mike Shoup <mike@shoup.io>
Date: Wed, 2 Jan 2019 11:55:12 -0700
Subject: [PATCH] Print version option

---
 setup.py                 |  2 +-
 src/synthale/__init__.py |  2 ++
 src/synthale/cli.py      | 24 +++++++++++++++++--
 tests/test_cli.py        | 50 ++++++++++++++++++++++++++++------------
 4 files changed, 60 insertions(+), 18 deletions(-)

diff --git a/setup.py b/setup.py
index 202d422..a805f04 100644
--- a/setup.py
+++ b/setup.py
@@ -39,7 +39,7 @@ setup(
     ],
     entry_points='''
         [console_scripts]
-        synthale=synthale.cli:main
+        synthale=synthale.cli:cli
     ''',
     classifiers=[
         'Development Status :: 4 - Beta',
diff --git a/src/synthale/__init__.py b/src/synthale/__init__.py
index 60298aa..eb9694c 100644
--- a/src/synthale/__init__.py
+++ b/src/synthale/__init__.py
@@ -14,3 +14,5 @@
 #
 # You should have received a copy of the GNU General Public License
 # along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
+VERSION = '0.0.1'
diff --git a/src/synthale/cli.py b/src/synthale/cli.py
index df5dcf1..dd90f32 100644
--- a/src/synthale/cli.py
+++ b/src/synthale/cli.py
@@ -15,12 +15,32 @@
 # You should have received a copy of the GNU General Public License
 # along with this program.  If not, see <https://www.gnu.org/licenses/>.
 
+import platform
+
 import click
 
+from synthale import VERSION
 from synthale.recipes import load_file, load_all_files, write_recipes
 
 
-@click.command()
+@click.group()
+def cli():
+    """Synthale converts BeerXML files to markdown.
+
+    Copyright (C) 2019 Mike Shoup"""
+    pass
+
+
+@cli.command()
+def version():
+    """Print version and exit."""
+    click.echo(
+        'Synthale version: {}\n'
+        'Python version: {}'.format(VERSION, platform.python_version())
+    )
+
+
+@cli.command()
 @click.option(
     '--vol-unit', '-v',
     type=click.Choice(('gallons', 'liters')),
@@ -47,7 +67,7 @@ from synthale.recipes import load_file, load_all_files, write_recipes
 )
 @click.argument('input_path')
 @click.argument('output_path')
-def main(
+def generate(
     input_path,
     output_path,
     vol_unit,
diff --git a/tests/test_cli.py b/tests/test_cli.py
index 49fac46..85e9907 100644
--- a/tests/test_cli.py
+++ b/tests/test_cli.py
@@ -15,24 +15,27 @@
 # You should have received a copy of the GNU General Public License
 # along with this program.  If not, see <https://www.gnu.org/licenses/>.
 
+import platform
+
 from click.testing import CliRunner
 import pytest
 
-from synthale.cli import main
+from synthale import VERSION
+from synthale.cli import cli
 
 
-def test_main_help():
-    """Test the help output of the main CLI command."""
+def test_cli_help():
+    """Test the help output of the cli CLI command."""
     runner = CliRunner()
-    result = runner.invoke(main, ['--help'])
+    result = runner.invoke(cli, ['generate', '--help'])
     assert 'INPUT_PATH' in result.output
     assert 'OUTPUT_PATH' in result.output
 
 
-def test_main_directory(tmpdir, md_recipes):
+def test_cli_directory(tmpdir, md_recipes):
     """Test command where input is a directory."""
     runner = CliRunner()
-    result = runner.invoke(main, ['tests/recipes', str(tmpdir)])
+    result = runner.invoke(cli, ['generate', 'tests/recipes', str(tmpdir)])
 
     assert result.exit_code == 0
     assert result.output.startswith(
@@ -44,10 +47,14 @@ def test_main_directory(tmpdir, md_recipes):
         assert path.read() == recipe.markdown
 
 
-def test_main_file(tmpdir):
+def test_cli_file(tmpdir):
     """Test command where input is a file."""
     runner = CliRunner()
-    result = runner.invoke(main, ['tests/recipes/weizen.xml', str(tmpdir)])
+    result = runner.invoke(cli, [
+        'generate',
+        'tests/recipes/weizen.xml',
+        str(tmpdir)
+    ])
 
     assert result.exit_code == 0
     assert result.output.startswith(
@@ -72,16 +79,29 @@ def test_main_file(tmpdir):
     ('--temp-unit', 'fahrenheit', '| 152.0 °F    |'),
     ('--temp-unit', 'celsius', '| 66.7 °C     |')
 ))
-def test_main_units(tmpdir, option, flag, expected):
+def test_cli_units(tmpdir, option, flag, expected):
     """Test units options."""
     runner = CliRunner()
-    result = runner.invoke(
-        main, [option, flag, 'tests/recipes/coffee-stout.xml', str(tmpdir)]
-    )
+    result = runner.invoke(cli, [
+        'generate',
+        option,
+        flag,
+        'tests/recipes/coffee-stout.xml',
+        str(tmpdir)
+    ])
 
     assert result.exit_code == 0
 
     path = tmpdir.join('coffee_stout.md')
-    result = path.read()
-    print(result)
-    assert expected in result
+    assert expected in path.read()
+
+
+def test_cli_version():
+    """Test version output."""
+    runner = CliRunner()
+    result = runner.invoke(cli, ['version'])
+    assert result.exit_code == 0
+    assert result.output.startswith(
+        'Synthale version: {}\n'
+        'Python version: {}'.format(VERSION, platform.python_version())
+    )