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"""Tests for the weather service."""
import pytest
import responses
from app.services.weather_service import WeatherService, WeatherServiceError
from app.utils.http_client import HttpClient
SAMPLE_API_RESPONSE = {
"address": "viola,tn",
"resolvedAddress": "Viola, TN, United States",
"timezone": "America/Chicago",
"days": [
{
"datetime": "2024-01-15",
"hours": [
{
"datetime": "12:00:00",
"datetimeEpoch": 2000000000, # Future timestamp
"temp": 45.0,
"feelslike": 42.0,
"humidity": 65.0,
"precip": 0.0,
"precipprob": 20.0,
"snow": 0.0,
"snowdepth": 0.0,
"windspeed": 10.0,
"windgust": 15.0,
"winddir": 180.0,
"pressure": 30.1,
"visibility": 10.0,
"cloudcover": 50.0,
"uvindex": 3,
"conditions": "Partially cloudy",
"icon": "partly-cloudy-day",
},
{
"datetime": "13:00:00",
"datetimeEpoch": 2000003600,
"temp": 48.0,
"feelslike": 45.0,
"humidity": 60.0,
"precip": 0.0,
"precipprob": 15.0,
"snow": 0.0,
"snowdepth": 0.0,
"windspeed": 12.0,
"windgust": 18.0,
"winddir": 185.0,
"pressure": 30.0,
"visibility": 10.0,
"cloudcover": 45.0,
"uvindex": 4,
"conditions": "Partially cloudy",
"icon": "partly-cloudy-day",
},
],
}
],
"alerts": [
{
"event": "Wind Advisory",
"headline": "Wind Advisory in effect until 6 PM",
"description": "Gusty winds expected throughout the day.",
"onset": "2024-01-15T08:00:00",
"ends": "2024-01-15T18:00:00",
"id": "NWS-456",
"language": "en",
"link": "https://weather.gov/alerts/456",
}
],
}
class TestWeatherService:
"""Test weather service functionality."""
def test_requires_api_key(self) -> None:
"""Test that service requires an API key."""
with pytest.raises(WeatherServiceError, match="API key is required"):
WeatherService(api_key="")
@responses.activate
def test_get_forecast_success(self) -> None:
"""Test successful forecast retrieval."""
responses.add(
responses.GET,
"https://weather.visualcrossing.com/VisualCrossingWebServices/rest/services/timeline/viola%2Ctn",
json=SAMPLE_API_RESPONSE,
status=200,
)
service = WeatherService(api_key="test-key")
forecast = service.get_forecast("viola,tn", hours_ahead=24)
assert forecast.location == "viola,tn"
assert forecast.resolved_address == "Viola, TN, United States"
assert len(forecast.hourly_forecasts) == 2
assert len(forecast.alerts) == 1
assert forecast.alerts[0].event == "Wind Advisory"
@responses.activate
def test_get_forecast_parses_hourly_data(self) -> None:
"""Test that hourly forecast data is correctly parsed."""
responses.add(
responses.GET,
"https://weather.visualcrossing.com/VisualCrossingWebServices/rest/services/timeline/viola%2Ctn",
json=SAMPLE_API_RESPONSE,
status=200,
)
service = WeatherService(api_key="test-key")
forecast = service.get_forecast("viola,tn")
hour = forecast.hourly_forecasts[0]
assert hour.temp == 45.0
assert hour.feelslike == 42.0
assert hour.humidity == 65.0
assert hour.precip_prob == 20.0
assert hour.wind_speed == 10.0
assert hour.wind_gust == 15.0
assert hour.conditions == "Partially cloudy"
@responses.activate
def test_get_forecast_handles_api_error(self) -> None:
"""Test handling of API errors."""
responses.add(
responses.GET,
"https://weather.visualcrossing.com/VisualCrossingWebServices/rest/services/timeline/viola%2Ctn",
json={"error": "Invalid API key"},
status=401,
)
service = WeatherService(api_key="bad-key")
with pytest.raises(WeatherServiceError, match="Failed to fetch forecast"):
service.get_forecast("viola,tn")
@responses.activate
def test_get_forecast_handles_invalid_json(self) -> None:
"""Test handling of invalid JSON response."""
responses.add(
responses.GET,
"https://weather.visualcrossing.com/VisualCrossingWebServices/rest/services/timeline/viola%2Ctn",
body="not json",
status=200,
content_type="text/plain",
)
service = WeatherService(api_key="test-key")
with pytest.raises(WeatherServiceError, match="Invalid JSON"):
service.get_forecast("viola,tn")
@responses.activate
def test_location_encoding(self) -> None:
"""Test that location is properly URL encoded."""
responses.add(
responses.GET,
"https://weather.visualcrossing.com/VisualCrossingWebServices/rest/services/timeline/Nashville%2C%20TN",
json={
"address": "Nashville, TN",
"resolvedAddress": "Nashville, TN, United States",
"timezone": "America/Chicago",
"days": [],
"alerts": [],
},
status=200,
)
service = WeatherService(api_key="test-key")
forecast = service.get_forecast("Nashville, TN")
assert forecast.resolved_address == "Nashville, TN, United States"