feat(server-go): 区域发病统计（#22，rooms.region + region-stats）

2026-08-13 08:53:00 +08:00
parent 15f09dcdee
commit 7949f90c0c
4 changed files with 106 additions and 0 deletions
@@ -0,0 +1,32 @@
+package service
+
+import "testing"
+
+func TestAggregateRegionStats(t *testing.T) {
+	entries := []RegionDiseaseEntry{
+		{Region: "A镇", Disease: "白僵病"},
+		{Region: "A镇", Disease: "白僵病"},
+		{Region: "A镇", Disease: "软化病"},
+		{Region: "B乡", Disease: "白僵病"},
+		{Region: "", Disease: "白僵病"},
+	}
+	stats := AggregateRegionStats(entries)
+	if len(stats) != 2 {
+		t.Fatalf("统计区域数 = %d, want 2（空区域应剔除）", len(stats))
+	}
+	if stats[0].Region != "A镇" || stats[0].Total != 3 {
+		t.Errorf("A镇应排第一且 total=3，实际 %+v", stats[0])
+	}
+	if stats[0].Diseases["白僵病"] != 2 || stats[0].Diseases["软化病"] != 1 {
+		t.Errorf("A镇病种分布不正确: %+v", stats[0].Diseases)
+	}
+	if stats[1].Region != "B乡" || stats[1].Total != 1 {
+		t.Errorf("B乡统计不正确: %+v", stats[1])
+	}
+}
+
+func TestAggregateRegionStatsEmpty(t *testing.T) {
+	if len(AggregateRegionStats(nil)) != 0 {
+		t.Error("空输入应返回空结果")
+	}
+}