grabbing the weather with some tests

.editorconfig

@@ -0,0 +1,21 @@
+root = true
+
+# Unix-style newlines with a newline ending every file
+[*]
+end_of_line = lf
+insert_final_newline = true
+
+# Matches multiple files with brace expansion notation
+# Set default charset
+[*.{js,py}]
+charset = utf-8
+
+# 4 space indentation
+[*.py]
+indent_style = space
+indent_size = 4
+
+# 2 space indentation
+[*.js]
+indent_style = space
+indent_size = 2

README.md

@@ -2,6 +2,12 @@
 
 Here are my Python solutions to the book Exercises for Programmers: 57 Challenges to Develop Your Coding Skills by Brian P. Hogan.
 
+# Setup
+virtualenv env -p python3.7
+
+source env/bin/activate
+
+pip install -r requirements.txt
 
 # Run tests
 python -m unittest discover -p "*_test.py" -v

grabbing_the_weather/app.py

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+import os
+import requests
+
+
+def print_header():
+    """ Print header 
+    """
+    header_text = ''
+    TEXT = f' Grabbing the weather \n'
+    line = '-' * len(TEXT)
+    line += '\n'
+
+    header_text += line
+    header_text += TEXT
+    header_text += line
+    print(header_text)
+
+def get_location():
+
+    while True:
+        location = input('Where are you? ')
+        if len(location) > 0:
+            return location
+        else:
+            print('A valid input required.')
+
+
+def get_weather_for_city(city_name):
+
+    api_key = os.environ.get('OPEN_WEATHER_MAP_API_KEY', None)
+    if not api_key:
+        print('API KEY NOT FOUND')
+        print('export OPEN_WEATHER_MAP_API_KEY={YOUR KEY}')
+        return
+
+    response = requests.get(f'https://api.openweathermap.org/data/2.5/weather?units=metric&q={city_name}&appid={api_key}')
+    response.raise_for_status
+    if response.ok:
+        return response
+
+def print_weather_data(temp, location):
+
+    print(f'{location} weather:')
+    print(f'{temp} degrees celsius')
+
+if __name__ == "__main__":
+    print_header()
+    location = get_location()
+    response = get_weather_for_city(location)
+    if response:
+        if response.status_code == 200:
+            data = response.json()
+            main = data['main']
+            temp =  main['temp']
+            print_weather_data(temp, location)

grabbing_the_weather/tests/system/app_test.py

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+import os
+from unittest import TestCase
+from unittest.mock import patch, call
+import app
+
+
+class AppTest(TestCase):
+
+    def test_print_header(self):
+
+        expected = '-----------------------\n Grabbing the weather \n-----------------------\n'
+        with patch('builtins.print') as mocked_print:
+            app.print_header()
+            mocked_print.assert_called_with(expected)
+
+
+    def test_get_weather_for_city(self):
+        city_name = 'Sheffield'
+        response_json = {'coord': {'lon': -1.47, 'lat': 53.38}, 'weather': [{'id': 801, 'main': 'Clouds', 'description': 'few clouds', 'icon': '02d'}], 'base': 'stations', 'main': {'temp': 19.99, 'pressure': 1007, 'humidity': 49, 'temp_min': 17.78, 'temp_max': 22.22}, 'visibility': 10000, 'wind': {'speed': 7.2, 'deg': 230}, 'clouds': {'all': 20}, 'dt': 1565007677, 'sys': {'type': 1, 'id': 1382, 'message': 0.0072, 'country': 'GB', 'sunrise': 1564979280, 'sunset': 1565034948}, 'timezone': 3600, 'id': 2638077, 'name': 'Sheffield', 'cod': 200}
+        with patch('requests.get') as mocked_request_get:
+            mocked_request_get.return_value.status_code = 200
+            mocked_request_get.return_value.json.return_value = response_json
+            response = app.get_weather_for_city(city_name)
+            self.assertEqual(response.status_code, 200)
+            api_key = os.environ['OPEN_WEATHER_MAP_API_KEY']
+            mocked_request_get.assert_called_with(f'https://api.openweathermap.org/data/2.5/weather?units=metric&q=Sheffield&appid={api_key}')
+            self.assertEqual(response.json(), response_json)
+
+
+    def test_print_people_in_space(self):
+
+        expected = [call('Sheffield weather:'), call('20 degrees celsius')]
+        temp = 20
+        location = 'Sheffield'
+
+        with patch('builtins.print') as mocked_print:
+            app.print_weather_data(temp, location)
+            mocked_print.assert_has_calls(expected)

grabbing_the_weather/tests/unit/unit_test.py

@@ -0,0 +1,5 @@
+from unittest import TestCase
+import app
+
+class FilteringRecordsTest(TestCase):
+    pass

requirements.txt

@@ -0,0 +1,18 @@
+appdirs==1.4.3
+attrs==19.1.0
+autopep8==1.4.4
+black==19.3b0
+certifi==2019.6.16
+chardet==3.0.4
+Click==7.0
+Flask==1.1.1
+idna==2.8
+itsdangerous==1.1.0
+Jinja2==2.10.1
+MarkupSafe==1.1.1
+pkg-resources==0.0.0
+pycodestyle==2.5.0
+requests==2.22.0
+toml==0.10.0
+urllib3==1.25.3
+Werkzeug==0.15.5