class TestConvert(unittest.TestCase):
"""Tests the convert method."""
def setUp(self):
self.converter = CurrencyConverter()
self.rates = {"USD": 0.87, "EUR": 1, "CZK": 0.04}
@patch("src.CurrencyConverter.CurrencyConverter.call_rates_api")
def test_single_conversion(self, mock_rates):
"""Test conversion 1:1."""
mock_rates.return_value = self.rates
conversion = self.converter.convert(1, "USD", "EUR")
expected = {
"input": {
"amount": 1,
"currency": "USD"
},
"output": {
"EUR": 0.87
}
}
self.assertDictEqual(conversion, expected)
conversion = self.converter.convert(1, "CZK", "USD")
expected = {
"input": {
"amount": 1,
"currency": "CZK"
},
"output": {
"USD": 0.05
}
}
self.assertDictEqual(conversion, expected)
@patch("src.CurrencyConverter.CurrencyConverter.call_rates_api")
def test_all_conversion(self, mock_rates):
"""Test conversion 1:ALL."""
mock_rates.return_value = self.rates
conversion = self.converter.convert(1, "USD")
expected = {
"input": {
"amount": 1,
"currency": "USD"
},
"output": {
"USD": 1,
"EUR": 0.87,
"CZK": 21.75
},
}
self.assertDictEqual(conversion, expected)
# If the file was run directly (as script).
if __name__ == '__main__':
# Module required for command line parsing.
import argparse
# Save terminal encoding
terminal_encoding = sys.stdin.encoding
# Parse the incoming arguments
# example 1: ./currency_converter.py --amount 100.0 --input_currency EUR --output_currency CZK
# example 2: ./currency_converter.py --amount 0.9 --input_currency ¥ --output_currency AUD
parser = argparse.ArgumentParser(description='Currency Converter in Python')
parser.add_argument('--amount', action='store', help='Amount of money to convert',
metavar='<float>', required=True)
parser.add_argument('--input_currency', action='store', help='From currency',
metavar='<3 letter currency code or currency symbol>', required=True)
parser.add_argument('--output_currency', action='store',
help='To currency | If missing, to all currencies.',
metavar='<3 letter currency code or currency symbol>')
args = parser.parse_args()
# Calculate the result.
try:
result = converter.convert(args.amount, args.input_currency, args.output_currency, terminal_encoding)
except Exception, e:
raise SystemExit(e)
# Show JSON string
print(result)
#exit()
# Get API key from config file
with open('config.txt') as config_file:
app_id = config_file.read().strip()
# Filepaths
current_dir = os.path.dirname(os.path.realpath(__file__))
rates_filepath = os.path.abspath(current_dir+'/rates_files/latest.json')
symbols_filepath = os.path.abspath(current_dir+'/cur_symbols/currency_symbols.txt')
# The main object
converter = CurrencyConverter(app_id, 'file', symbols_filepath, rates_filepath)
# Codes test
#result = converter.convert(10, 'EUR', 'CZK')
#result = converter.convert(10, 'EUR', 'EFKA')
#result = converter.convert(10, 'EUR')
#result = converter.convert(100, 'CZK', 'USD')
# Symbols test
#result = converter.convert(10, '€', 'CZK')
#result = converter.convert(111.88, 'CZK', '€')
#result = converter.convert(111, 'Kč', '€')
#result = converter.convert(500.5, '¥', '$')
result = converter.convert("\t1000 ", ' ৳\t', '\tzł ')
#result = converter.convert(10.04, '€', 'SFr.')
# JSON
print(result)