feat: 建立统一检测任务、样本链与发病事件

server-go/internal/model/disease_event_test.go

@@ -0,0 +1,35 @@
+package model
+
+import (
+	"encoding/json"
+	"testing"
+)
+
+func TestDiseaseEventRequiresEvidenceToConfirm(t *testing.T) {
+	event := DiseaseEvent{Status: "confirmed"}
+	if err := ValidateDiseaseEventEvidence(event); err == nil {
+		t.Fatal("confirmed 无证据应返回错误")
+	}
+	event.Evidence = json.RawMessage(`{"result":"positive"}`)
+	if err := ValidateDiseaseEventEvidence(event); err != nil {
+		t.Fatalf("confirmed 有证据应通过: %v", err)
+	}
+}
+
+func TestDiseaseEventTransition(t *testing.T) {
+	transitions := [][2]string{
+		{"suspected", "confirmed"},
+		{"confirmed", "controlled"},
+		{"controlled", "closed"},
+		{"closed", "reopened"},
+		{"reopened", "confirmed"},
+	}
+	for _, tr := range transitions {
+		if !ValidDiseaseEventTransition(tr[0], tr[1]) {
+			t.Errorf("expected %s -> %s", tr[0], tr[1])
+		}
+	}
+	if ValidDiseaseEventTransition("suspected", "controlled") {
+		t.Error("suspected 不能直接 controlled")
+	}
+}