feat: 建立统一检测任务、样本链与发病事件

server-go/internal/model/detection_task_test.go

@@ -0,0 +1,51 @@
+package model
+
+import "testing"
+
+func TestDetectionTaskRejectsInvalidTransition(t *testing.T) {
+	if ValidDetectionTaskTransition("pending", "testing") {
+		t.Error("pending 不能直接跳 testing")
+	}
+	if ValidDetectionTaskTransition("draft", "completed") {
+		t.Error("draft 不能直接 completed")
+	}
+	if ValidDetectionTaskTransition("completed", "review") {
+		t.Error("completed 不能回退")
+	}
+}
+
+func TestDetectionTaskAllowsRequiredTransitions(t *testing.T) {
+	transitions := [][2]string{
+		{"draft", "pending"},
+		{"pending", "assigned"},
+		{"assigned", "sampling"},
+		{"sampling", "testing"},
+		{"testing", "review"},
+		{"review", "completed"},
+		{"pending", "cancelled"},
+	}
+	for _, tr := range transitions {
+		if !ValidDetectionTaskTransition(tr[0], tr[1]) {
+			t.Errorf("expected %s -> %s", tr[0], tr[1])
+		}
+	}
+}
+
+func TestSampleTransition(t *testing.T) {
+	transitions := [][2]string{
+		{"created", "collected"},
+		{"collected", "handed_over"},
+		{"handed_over", "received"},
+		{"received", "testing"},
+		{"testing", "consumed"},
+		{"consumed", "disposed"},
+	}
+	for _, tr := range transitions {
+		if !ValidSampleTransition(tr[0], tr[1]) {
+			t.Errorf("expected %s -> %s", tr[0], tr[1])
+		}
+	}
+	if ValidSampleTransition("created", "testing") {
+		t.Error("created 不能直接 testing")
+	}
+}