class CurrencyExchangeTest(unittest.TestCase):
def setUp(self):
self.currencyExchange = CurrencyExchange()
def test_canary(self):
self.assertTrue(True)
def test_get_currency_rate_from_0_vendor(self):
self.assertEquals(["", 0.0], self.currencyExchange.getExchangeRate("GBP"))
def test_adjust_rate(self):
self.assertEquals(98, self.currencyExchange.adjustRate(100))
def test_get_max_currency_rate_from_invalid_vendor_name(self):
self.currencyExchange.addVendor([""])
self.assertEquals(["", 0.0], self.currencyExchange.getExchangeRate("GBP"))
def test_get_currency_rate_from_1_vendor(self):
self.currencyExchange.addVendor(["v1"])
self.currencyExchange.getRateFromWeb = MagicMock(return_value=100.00)
self.assertEquals(["v1", 98.00], self.currencyExchange.getExchangeRate("GBP"))
def test_get_max_currency_rate_from_2_same_vendors(self):
self.currencyExchange.addVendor(["v1", "v1"])
self.currencyExchange.getRateFromWeb = MagicMock()
self.currencyExchange.getRateFromWeb.side_effect = [80.00, 90.00]
self.assertEquals(["v1", 78.4], self.currencyExchange.getExchangeRate("GBP"))
def test_get_max_currency_rate_from_2_different_vendors(self):
vendor = {"v1": 60.00, "v2": 100.00}
self.currencyExchange.addVendor(["v1", "v2"])
self.currencyExchange.getRateFromWeb = MagicMock(side_effect=[vendor["v1"], vendor["v2"]])
self.assertEquals(["v2", 98], self.currencyExchange.getExchangeRate("GBP"))
def test_get_max_currency_rate_if_price_of_vendor1_is_greater_than_vendor2(self):
vendor = {"v1": 100.00, "v2": 90.00}
self.currencyExchange.addVendor(["v1", "v2"])
self.currencyExchange.getRateFromWeb = MagicMock(side_effect=[vendor["v1"], vendor["v2"]])
self.assertEquals(["v1", 98], self.currencyExchange.getExchangeRate("GBP"))
def test_get_max_currency_rate_if_rate_of_vendor1_is_equal_to_vendor2(self):
vendor = {"v1": 100.00, "v2": 100.00}
self.currencyExchange.addVendor(["v1", "v2"])
self.currencyExchange.getRateFromWeb = MagicMock(side_effect=[vendor["v1"], vendor["v2"]])
self.assertEquals(["v1", 98], self.currencyExchange.getExchangeRate("GBP"))
def test_get_max_currency_rate_if_rate_of_vendor1_is_less_than_vendor2(self):
vendor = {"v1": 50.00, "v2": 90.00}
self.currencyExchange.addVendor(["v1", "v2"])
self.currencyExchange.getRateFromWeb = MagicMock(side_effect=[vendor["v1"], vendor["v2"]])
self.assertEquals(["v2", 88.2], self.currencyExchange.getExchangeRate("GBP"))
def test_get_max_currency_rate_from_3_vendors_when_vendor1_is_max(self):
vendor = {"v1": 100.00, "v2": 80.00, "v3": 90.00}
self.currencyExchange.addVendor(["v1", "v2", "v3"])
self.currencyExchange.getRateFromWeb = MagicMock(side_effect=[vendor["v1"], vendor["v2"], vendor["v3"]])
self.assertEquals(["v1", 98], self.currencyExchange.getExchangeRate("GBP"))
def test_get_max_currency_rate_from_3_vendors_when_vendor2_is_max(self):
vendor = {"v1": 80.00, "v2": 100.00, "v3": 90.00}
self.currencyExchange.addVendor(["v1", "v2", "v3"])
self.currencyExchange.getRateFromWeb = MagicMock(side_effect=[vendor["v1"], vendor["v2"], vendor["v3"]])
self.assertEquals(["v2", 98], self.currencyExchange.getExchangeRate("GBP"))
def test_get_max_currency_rate_from_3_vendors_when_vendor3_is_max(self):
vendor = {"v1": 80.00, "v2": 90.00, "v3": 100.00}
self.currencyExchange.addVendor(["v1", "v2", "v3"])
self.currencyExchange.getRateFromWeb = MagicMock(side_effect=[vendor["v1"], vendor["v2"], vendor["v3"]])
self.assertEquals(["v3", 98], self.currencyExchange.getExchangeRate("GBP"))
def test_get_max_currency_rate_from_3_vendors_when_vendor2_and_vendor3_are_max(self):
vendor = {"v1": 80.00, "v2": 100.00, "v3": 100.00}
self.currencyExchange.addVendor(["v1", "v2", "v3"])
self.currencyExchange.getRateFromWeb = MagicMock(side_effect=[vendor["v1"], vendor["v2"], vendor["v3"]])
self.assertEquals(["v2", 98], self.currencyExchange.getExchangeRate("GBP"))
def test_get_max_currency_rate_from_3_vendors_when_3_vendors_are_max(self):
vendor = {"v1": 100.00, "v2": 100.00, "v3": 100.00}
self.currencyExchange.addVendor(["v1", "v2", "v3"])
self.currencyExchange.getRateFromWeb = MagicMock(side_effect=[vendor["v1"], vendor["v2"], vendor["v3"]])
self.assertEquals(["v1", 98], self.currencyExchange.getExchangeRate("GBP"))
def test_get_max_currency_rate_from_1_vendor_giving_invalid_rate(self):
vendor = {"v1": -80.00}
self.currencyExchange.addVendor(["v1"])
self.currencyExchange.getRateFromWeb = MagicMock(side_effect=[vendor["v1"]])
self.assertEquals(["", 0.0], self.currencyExchange.getExchangeRate("GBP"))
def test_get_max_currency_rate_from_vendors_giving_invalid_rates(self):
vendor = {"v1": -80.00, "v2": 0.0}
self.currencyExchange.addVendor(["v1", "v2"])
self.currencyExchange.getRateFromWeb = MagicMock(side_effect=[vendor["v1"], vendor["v2"]])
self.assertEquals(["", 0.0], self.currencyExchange.getExchangeRate("GBP"))
def test_get_max_currency_rate_from_2_vendors_giving_invalid_rates_and_1_vendor_giving_valid_rate(self):
vendor = {"v1": -80.00, "v2": 0.0, "v3": 100.0}
self.currencyExchange.addVendor(["v1", "v2", "v3"])
self.currencyExchange.getRateFromWeb = MagicMock(side_effect=[vendor["v1"], vendor["v2"], vendor["v3"]])
self.assertEquals(["v3", 98.0], self.currencyExchange.getExchangeRate("GBP"))
def test_get_max_currency_rate_from_1_vendor_giving_invalid_rates_and_2_vendors_giving_valid_rate(self):
vendor = {"v1": -80.00, "v2": 100.0, "v3": 80.0}
self.currencyExchange.addVendor(["v1", "v2", "v3"])
self.currencyExchange.getRateFromWeb = MagicMock(side_effect=[vendor["v1"], vendor["v2"], vendor["v3"]])
self.assertEquals(["v2", 98.0], self.currencyExchange.getExchangeRate("GBP"))
def test_get_max_currency_rate_from_1_vendor_when_web_service_fails(self):
self.currencyExchange.addVendor(["v1"])
self.currencyExchange.getRateFromWeb = MagicMock(side_effect=IOError())
self.assertEquals(["", 0.0], self.currencyExchange.getExchangeRate("GBP"))
def test_get_max_currency_rate_from_2_vendors_when_web_service_of_vendor1_fails(self):
vendor = {"v1": IOError(), "v2": 100.00}
self.currencyExchange.addVendor(["v1", "v2"])
self.currencyExchange.getRateFromWeb = MagicMock(side_effect=[vendor["v1"], vendor["v2"]])
self.assertEquals(["v2", 98], self.currencyExchange.getExchangeRate("GBP"))
def test_get_max_currency_rate_from_3_vendors_when_web_service_of_vendor1_fails(self):
vendor = {"v1": IOError(), "v2": 90.00, "v3": 100.00}
self.currencyExchange.addVendor(["v1", "v2", "v3"])
self.currencyExchange.getRateFromWeb = MagicMock(side_effect=[vendor["v1"], vendor["v2"], vendor["v3"]])
self.assertEquals(["v3", 98], self.currencyExchange.getExchangeRate("GBP"))
def test_get_max_currency_rate_from_3_vendors_when_web_service_of_all_vendors_fail(self):
vendor = {"v1": IOError(), "v2": IOError(), "v3": IOError()}
self.currencyExchange.addVendor(["v1", "v2", "v3"])
self.currencyExchange.getRateFromWeb = MagicMock(side_effect=[vendor["v1"], vendor["v2"], vendor["v3"]])
self.assertEquals(["", 0.0], self.currencyExchange.getExchangeRate("GBP"))
def test_get_max_curency_rate_from_1_vendor_from_the_actual_web_service(self):
self.currencyExchange.addVendor(["v1"])
vendor = self.currencyExchange.getExchangeRate("GBP")
self.assertTrue((vendor[0] == "" or vendor[0] in self.currencyExchange.vendorList) and vendor[1] >= 0)
def test_get_max_curency_rate_from_2_vendors_from_the_actual_web_service(self):
self.currencyExchange.addVendor(["v1", "v2"])
vendor = self.currencyExchange.getExchangeRate("GBP")
self.assertTrue((vendor[0] == "" or vendor[0] in self.currencyExchange.vendorList) and vendor[1] >= 0)
def test_get_max_curency_rate_from_3_vendors_from_the_actual_web_service(self):
self.currencyExchange.addVendor(["v1", "v2", "v3"])
vendor = self.currencyExchange.getExchangeRate("GBP")
self.assertTrue((vendor[0] == "" or vendor[0] in self.currencyExchange.vendorList) and vendor[1] >= 0)
def test_get_rate_from_web_when_server_is_down(self):
urllib.urlopen = MagicMock(side_effect=IOError())
self.assertEquals(0.0, self.currencyExchange.getRateFromWeb("v1", "GBP"))
def adjusted_high_rate(self, vendorNames):
currencyExchange = CurrencyExchange()
currencyExchange.addVendor(vendorNames)
return currencyExchange.getExchangeRate("GBP")