feat(server-go): 和风天气接入与高发病天气预警规则（#12）

server-go/internal/service/weather_test.go

@@ -0,0 +1,70 @@
+package service
+
+import (
+	"context"
+	"net/http"
+	"net/http/httptest"
+	"testing"
+)
+
+func TestWeatherServiceConfigured(t *testing.T) {
+	if NewWeatherService("", "").Configured() {
+		t.Error("空配置应返回 false")
+	}
+	if !NewWeatherService("key", "101010100").Configured() {
+		t.Error("有配置应返回 true")
+	}
+}
+
+func TestWeatherFetchNow(t *testing.T) {
+	srv := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+		if r.URL.Path != "/v7/weather/now" {
+			t.Errorf("path = %s", r.URL.Path)
+		}
+		if r.URL.Query().Get("key") != "key1" || r.URL.Query().Get("location") == "" {
+			t.Errorf("参数不正确: %v", r.URL.Query())
+		}
+		_, _ = w.Write([]byte(`{"code":"200","now":{"temp":"28","text":"小雨","humidity":"85"}}`))
+	}))
+	defer srv.Close()
+
+	s := NewWeatherService("key1", "116.41,39.92")
+	s.baseURL = srv.URL
+	now, err := s.FetchNow(context.Background())
+	if err != nil {
+		t.Fatalf("FetchNow 错误: %v", err)
+	}
+	if now.Temp != 28 || now.Humidity != 85 || now.Text != "小雨" {
+		t.Errorf("解析结果不正确: %+v", now)
+	}
+}
+
+func TestWeatherFetchDaily(t *testing.T) {
+	srv := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+		_, _ = w.Write([]byte(`{"code":"200","daily":[{"fxDate":"2026-08-12","textDay":"小雨","textNight":"阴","tempMax":"30","tempMin":"24","humidity":"78"}]}`))
+	}))
+	defer srv.Close()
+
+	s := NewWeatherService("key1", "101010100")
+	s.baseURL = srv.URL
+	daily, err := s.FetchDaily(context.Background())
+	if err != nil {
+		t.Fatalf("FetchDaily 错误: %v", err)
+	}
+	if len(daily) != 1 || daily[0].TextDay != "小雨" || daily[0].TempMax != 30 {
+		t.Errorf("解析结果不正确: %+v", daily)
+	}
+}
+
+func TestWeatherFetchErrorCode(t *testing.T) {
+	srv := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+		_, _ = w.Write([]byte(`{"code":"401","message":"invalid key"}`))
+	}))
+	defer srv.Close()
+
+	s := NewWeatherService("bad", "101010100")
+	s.baseURL = srv.URL
+	if _, err := s.FetchNow(context.Background()); err == nil {
+		t.Error("code!=200 应返回错误")
+	}
+}