feat(cloudflare): 完成隧道接入、运维与 P0 体验优化

internal/cloudflared/health_test.go

@@ -0,0 +1,57 @@
+package cloudflared
+
+import (
+	"context"
+	"io"
+	"log/slog"
+	"path/filepath"
+	"testing"
+	"time"
+
+	"github.com/fonu/fonu/internal/config"
+	"github.com/fonu/fonu/internal/db"
+)
+
+func TestComputeHealthUptimeExcludesUnknown(t *testing.T) {
+	from := time.Date(2026, 9, 30, 0, 0, 0, 0, time.UTC)
+	to := from.Add(2 * time.Hour)
+	events := []HealthEvent{
+		{TunnelID: 1, Domain: "a.example.com", State: HealthUnknown, At: from.Format(time.RFC3339)},
+		{TunnelID: 1, Domain: "a.example.com", State: HealthUp, At: from.Add(30 * time.Minute).Format(time.RFC3339)},
+		{TunnelID: 1, Domain: "a.example.com", State: HealthDown, At: from.Add(90 * time.Minute).Format(time.RFC3339)},
+	}
+	stats := ComputeHealthUptime(events, from, to)
+	if len(stats) != 1 {
+		t.Fatalf("应返回一条统计：%#v", stats)
+	}
+	if got := stats[0].Uptime; got < 66.6 || got > 66.7 || stats[0].UnknownMinutes != 30 || stats[0].DownMinutes != 30 {
+		t.Fatalf("可用率计算不符：%#v", stats[0])
+	}
+}
+
+func TestRecordHealthSkipsUnchangedState(t *testing.T) {
+	dir := t.TempDir()
+	conn, err := db.Open(filepath.Join(dir, "test.db"))
+	if err != nil {
+		t.Fatal(err)
+	}
+	defer conn.Close()
+	if err := db.Migrate(context.Background(), conn, filepath.Join("..", "..", "migrations")); err != nil {
+		t.Fatal(err)
+	}
+	svc := NewService(config.Config{DataDir: dir}, NewStore(conn), nil, slog.New(slog.NewTextHandler(io.Discard, nil)), nil)
+	sample := []HealthSample{{TunnelID: 1, Domain: "a.example.com", State: HealthUp}}
+	if err := svc.RecordHealth(context.Background(), sample); err != nil {
+		t.Fatal(err)
+	}
+	if err := svc.RecordHealth(context.Background(), sample); err != nil {
+		t.Fatal(err)
+	}
+	var count int
+	if err := conn.QueryRow(`SELECT COUNT(*) FROM cf_health_events`).Scan(&count); err != nil {
+		t.Fatal(err)
+	}
+	if count != 1 {
+		t.Fatalf("同状态不应重复写入，实际 %d 条", count)
+	}
+}