add: unittest (#6)

aws_paramstore_py/__init__.py

@@ -1,12 +1,12 @@
 import argparse
 import json
 
-import boto3
+from .main import get
 
-__version__ = '0.0.3'
+__version__ = '0.0.4'
 
 
-def main():
+def cli():
     parser = argparse.ArgumentParser(description='Query params from AWS System Manager Parameter Store')
     parser.add_argument('paths', metavar='path', nargs='*', help='The hierarchy for the parameter')
     parser.add_argument('--decryption', action='store_true', help='Decrypt secure values or not')
@@ -16,29 +16,3 @@ def main():
     decryption = args.decryption
     params = get(*paths, decryption=decryption)
     print(json.dumps(params))
-
-
-def get(*paths, decryption=False):
-    ssm = boto3.client('ssm')
-    path = '/'.join(paths)
-    path = _complement_slashes(path)
-    response = ssm.get_parameters_by_path(Path=path, Recursive=True, WithDecryption=decryption)
-    params = map(lambda p: _remove_prefix(p, path), response['Parameters'])
-    return _convert_to_dict(params)
-
-
-def _complement_slashes(path):
-    if path[len(path):] != '/':
-        path = path + '/'
-    if path[:1] != '/':
-        path = '/' + path
-    return path
-
-
-def _remove_prefix(param, prefix):
-    param['Name'] = param['Name'][len(prefix):]
-    return param
-
-
-def _convert_to_dict(params):
-    return {p['Name']: p['Value'] for p in params}

aws_paramstore_py/main.py

@@ -0,0 +1,42 @@
+import boto3
+
+
+def get(*paths, decryption=False):
+    ssm = boto3.client('ssm')
+    path = _join_slashes(paths)
+    response = ssm.get_parameters_by_path(Path=path, Recursive=True, WithDecryption=decryption)
+    params = map(lambda p: _remove_prefix(p, path), response['Parameters'])
+    return _convert_to_dict(params)
+
+
+def _join_slashes(paths):
+    path = '/'.join(filter(lambda e: len(e), map(lambda e: _remove_slashes_on_edge(e), paths)))
+    if not path:
+        return '/'
+    else:
+        return '/' + path + '/'
+
+
+def _remove_slashes_on_edge(string):
+    if _is_led_by_slash(string):
+        string = string[1:]
+    if _is_followed_by_slash(string):
+        string = string[:-1]
+    return string
+
+
+def _is_led_by_slash(string):
+    return string[:1] == '/'
+
+
+def _is_followed_by_slash(string):
+    return string[-1:] == '/'
+
+
+def _remove_prefix(param, prefix):
+    param['Name'] = param['Name'][len(prefix):]
+    return param
+
+
+def _convert_to_dict(params):
+    return {p['Name']: p['Value'] for p in params}

scripts/spec.sh

@@ -4,6 +4,12 @@ set -eu
 here=$(cd $(dirname "$0") && pwd)
 project_root=$(cd "${here}/.." && pwd)
 
+spec() {
+  cd "${project_root}"
+  python3 setup.py test
+  cd -
+}
+
 set -x
 
-echo "Test"
+spec

setup.py

@@ -5,8 +5,12 @@
 here = path.abspath(path.dirname(__file__))
 
 # Get the long description from the README file
-with open(path.join(here, 'README.rst'), encoding='utf-8') as f:
-    long_description = f.read()
+readme = path.join(here, 'README.rst')
+if path.exists(readme):
+    with open(readme, encoding='utf-8') as f:
+        long_description = f.read()
+else:
+    long_description = ''
 
 setup(
     # This is the name of your project. The first time you publish this
@@ -28,7 +32,7 @@
     # For a discussion on single-sourcing the version across setup.py and the
     # project code, see
     # https://packaging.python.org/en/latest/single_source_version.html
-    version='0.0.3',  # Required
+    version='0.0.4',  # Required
 
     # This is a one-line description or tagline of what your project does. This
     # corresponds to the "Summary" metadata field:
@@ -100,7 +104,7 @@
     #
     #   py_modules=["my_module"],
     #
-    packages=find_packages(exclude=['contrib', 'docs', 'tests']),  # Required
+    packages=find_packages(exclude=['spec']),  # Required
 
     # If your project only runs on certain Python versions, setting the python
     # requires argument to the appropriate PEP 440 version specifier string will
@@ -156,7 +160,15 @@
     # executes the function `main` from this package when invoked:
     entry_points={  # Optional
         'console_scripts': [
-            'aws-pspy=aws_paramstore_py:main',
+            'aws-pspy=aws_paramstore_py:cli',
         ],
     },
+
+    # A string naming a unittest.TestCase subclass (or a package or module containing
+    # one or more of them, or a method of such a subclass), or naming a function that
+    # can be called with no arguments and returns a unittest.TestSuite. If the named
+    # suite is a module, and the module has an additional_tests() function, it is called
+    # and the results are added to the tests to be run. If the named suite is a package,
+    # any submodules and subpackages are recursively added to the overall test suite.
+    test_suite='spec',
 )

spec/test_main.py

@@ -0,0 +1,54 @@
+import unittest
+from unittest.mock import patch
+
+import aws_paramstore_py as paramstore
+
+
+@patch('aws_paramstore_py.main.boto3')
+class TestMain(unittest.TestCase):
+    def test_get(self, mock):
+        method = mock.client('ssm').get_parameters_by_path
+        method.return_value = {'Parameters': [
+            {'Name': '/path/to/params/key1', 'Value': "value1"},
+            {'Name': '/path/to/params/key2', 'Value': "value2"}
+        ]}
+
+        params = paramstore.get('path', 'to', 'params')
+
+        method.assert_called_with(Path='/path/to/params/', Recursive=True, WithDecryption=False)
+        self.assertDictEqual({"key1": "value1", "key2": "value2"}, params)
+
+    def test_get_root(self, mock):
+        method = mock.client('ssm').get_parameters_by_path
+
+        paramstore.get()
+
+        method.assert_called_with(Path='/', Recursive=True, WithDecryption=False)
+
+    def test_get_slash(self, mock):
+        method = mock.client('ssm').get_parameters_by_path
+
+        paramstore.get('/')
+
+        method.assert_called_with(Path='/', Recursive=True, WithDecryption=False)
+
+    def test_get_leading_slash(self, mock):
+        method = mock.client('ssm').get_parameters_by_path
+
+        paramstore.get('/path/to')
+
+        method.assert_called_with(Path='/path/to/', Recursive=True, WithDecryption=False)
+
+    def test_get_following_slash(self, mock):
+        method = mock.client('ssm').get_parameters_by_path
+
+        paramstore.get('path/to/')
+
+        method.assert_called_with(Path='/path/to/', Recursive=True, WithDecryption=False)
+
+    def test_get_with_decryption(self, mock):
+        method = mock.client('ssm').get_parameters_by_path
+
+        paramstore.get('path/to/params', decryption=True)
+
+        method.assert_called_with(Path='/path/to/params/', Recursive=True, WithDecryption=True)