Added unit test to the Yahoo Finance sensor (#3943)

.coveragerc

@@ -283,7 +283,6 @@ omit =
     homeassistant/components/sensor/vasttrafik.py
     homeassistant/components/sensor/worldclock.py
     homeassistant/components/sensor/xbox_live.py
-    homeassistant/components/sensor/yahoo_finance.py
     homeassistant/components/sensor/yweather.py
     homeassistant/components/switch/acer_projector.py
     homeassistant/components/switch/anel_pwrctrl.py

tests/components/sensor/test_yahoo_finance.py

@@ -0,0 +1,41 @@
+"""The tests for the Yahoo Finance platform."""
+import json
+
+import unittest
+from unittest.mock import patch
+
+import homeassistant.components.sensor as sensor
+from homeassistant.bootstrap import setup_component
+from tests.common import (
+    get_test_home_assistant, load_fixture, assert_setup_component)
+
+VALID_CONFIG = {
+    'platform': 'yahoo_finance',
+    'symbol': 'YHOO'
+}
+
+
+class TestYahooFinanceSetup(unittest.TestCase):
+    """Test the Yahoo Finance platform."""
+
+    def setUp(self):
+        """Initialize values for this testcase class."""
+        self.hass = get_test_home_assistant()
+        self.config = VALID_CONFIG
+
+    def tearDown(self):
+        """Stop everything that was started."""
+        self.hass.stop()
+
+    @patch('yahoo_finance.Base._request',
+           return_value=json.loads(load_fixture('yahoo_finance.json')))
+    def test_default_setup(self, m):  # pylint: disable=invalid-name
+        """Test the default setup."""
+        with assert_setup_component(1, sensor.DOMAIN):
+            assert setup_component(self.hass, sensor.DOMAIN, {
+                'sensor': VALID_CONFIG})
+
+        state = self.hass.states.get('sensor.yahoo_stock')
+        self.assertEqual("41.69", state.attributes.get('open'))
+        self.assertEqual("41.79", state.attributes.get('prev_close'))
+        self.assertEqual("YHOO", state.attributes.get('unit_of_measurement'))

tests/fixtures/yahoo_finance.json

@@ -0,0 +1,85 @@
+ {
+    "symbol": "YHOO",
+    "Ask": "42.42",
+    "AverageDailyVolume": "11397600",
+    "Bid": "42.41",
+    "AskRealtime": null,
+    "BidRealtime": null,
+    "BookValue": "29.83",
+    "Change_PercentChange": "+0.62 - +1.48%",
+    "Change": "+0.62",
+    "Commission": null,
+    "Currency": "USD",
+    "ChangeRealtime": null,
+    "AfterHoursChangeRealtime": null,
+    "DividendShare": null,
+    "LastTradeDate": "10/18/2016",
+    "TradeDate": null,
+    "EarningsShare": "-5.18",
+    "ErrorIndicationreturnedforsymbolchangedinvalid": null,
+    "EPSEstimateCurrentYear": "0.49",
+    "EPSEstimateNextYear": "0.57",
+    "EPSEstimateNextQuarter": "0.17",
+    "DaysLow": "41.86",
+    "DaysHigh": "42.42",
+    "YearLow": "26.15",
+    "YearHigh": "44.92",
+    "HoldingsGainPercent": null,
+    "AnnualizedGain": null,
+    "HoldingsGain": null,
+    "HoldingsGainPercentRealtime": null,
+    "HoldingsGainRealtime": null,
+    "MoreInfo": null,
+    "OrderBookRealtime": null,
+    "MarketCapitalization": "40.37B",
+    "MarketCapRealtime": null,
+    "EBITDA": "151.08M",
+    "ChangeFromYearLow": "16.26",
+    "PercentChangeFromYearLow": "+62.18%",
+    "LastTradeRealtimeWithTime": null,
+    "ChangePercentRealtime": null,
+    "ChangeFromYearHigh": "-2.51",
+    "PercebtChangeFromYearHigh": "-5.59%",
+    "LastTradeWithTime": "9:41am - <b>42.41</b>",
+    "LastTradePriceOnly": "42.41",
+    "HighLimit": null,
+    "LowLimit": null,
+    "DaysRange": "41.86 - 42.42",
+    "DaysRangeRealtime": null,
+    "FiftydayMovingAverage": "43.16",
+    "TwoHundreddayMovingAverage": "39.26",
+    "ChangeFromTwoHundreddayMovingAverage": "3.15",
+    "PercentChangeFromTwoHundreddayMovingAverage": "+8.03%",
+    "ChangeFromFiftydayMovingAverage": "-0.75",
+    "PercentChangeFromFiftydayMovingAverage": "-1.74%",
+    "Name": "Yahoo! Inc.",
+    "Notes": null,
+    "Open": "41.69",
+    "PreviousClose": "41.79",
+    "PricePaid": null,
+    "ChangeinPercent": "+1.48%",
+    "PriceSales": "8.13",
+    "PriceBook": "1.40",
+    "ExDividendDate": null,
+    "PERatio": null,
+    "DividendPayDate": null,
+    "PERatioRealtime": null,
+    "PEGRatio": "-24.57",
+    "PriceEPSEstimateCurrentYear": "86.55",
+    "PriceEPSEstimateNextYear": "74.40",
+    "Symbol": "YHOO",
+    "SharesOwned": null,
+    "ShortRatio": "5.05",
+    "LastTradeTime": "9:41am",
+    "TickerTrend": null,
+    "OneyrTargetPrice": "43.64",
+    "Volume": "946198",
+    "HoldingsValue": null,
+    "HoldingsValueRealtime": null,
+    "YearRange": "26.15 - 44.92",
+    "DaysValueChange": null,
+    "DaysValueChangeRealtime": null,
+    "StockExchange": "NMS",
+    "DividendYield": null,
+    "PercentChange": "+1.48%"
+}