feat(server): DB SQLite CRUD agents/metrics/config/icons + tests

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

server/db/db_test.go

@@ -0,0 +1,88 @@
+package db_test
+
+import (
+	"testing"
+
+	"github.com/user/nanometrics/server/db"
+	"github.com/user/nanometrics/server/models"
+)
+
+func newTestDB(t *testing.T) *db.DB {
+	t.Helper()
+	d, err := db.Open(":memory:")
+	if err != nil {
+		t.Fatalf("open db: %v", err)
+	}
+	t.Cleanup(func() { d.Close() })
+	return d
+}
+
+func TestUpsertAndGetAgents(t *testing.T) {
+	d := newTestDB(t)
+	m := &models.AgentMetrics{Hostname: "srv-01", IP: "10.0.0.1", Status: "online"}
+	if err := d.UpsertAgent(m); err != nil {
+		t.Fatalf("upsert: %v", err)
+	}
+	agents, err := d.GetAgents()
+	if err != nil {
+		t.Fatalf("get agents: %v", err)
+	}
+	if len(agents) != 1 {
+		t.Fatalf("attendu 1 agent, eu %d", len(agents))
+	}
+	if agents[0].Hostname != "srv-01" {
+		t.Errorf("hostname: attendu srv-01, eu %s", agents[0].Hostname)
+	}
+}
+
+func TestInsertMetrics(t *testing.T) {
+	d := newTestDB(t)
+	cpu := 42.5
+	m := &models.AgentMetrics{Hostname: "srv-01", IP: "10.0.0.1", Status: "online", CPUPercent: &cpu}
+	_ = d.UpsertAgent(m)
+	if err := d.InsertMetrics(m); err != nil {
+		t.Fatalf("insert metrics: %v", err)
+	}
+	history, err := d.GetMetricsHistory("srv-01", 0, 9999999999)
+	if err != nil {
+		t.Fatalf("history: %v", err)
+	}
+	if len(history) != 1 {
+		t.Fatalf("attendu 1 entrée, eu %d", len(history))
+	}
+}
+
+func TestAgentConfig(t *testing.T) {
+	d := newTestDB(t)
+	cfg := &models.AgentConfig{
+		Metrics: models.MetricsConfig{
+			CPU: models.MetricProto{UDP: true, MQTT: false},
+		},
+	}
+	if err := d.UpsertAgentConfig("srv-01", cfg); err != nil {
+		t.Fatalf("upsert config: %v", err)
+	}
+	got, err := d.GetAgentConfig("srv-01")
+	if err != nil || got == nil {
+		t.Fatalf("get config: %v", err)
+	}
+	if !got.Metrics.CPU.UDP {
+		t.Error("CPU.UDP devrait être true")
+	}
+}
+
+func TestServerConfig(t *testing.T) {
+	d := newTestDB(t)
+	cfg := models.DefaultServerConfig()
+	cfg.TileMinWidth = 300
+	if err := d.SetServerConfig(cfg); err != nil {
+		t.Fatalf("set config: %v", err)
+	}
+	got, err := d.GetServerConfig()
+	if err != nil {
+		t.Fatalf("get config: %v", err)
+	}
+	if got.TileMinWidth != 300 {
+		t.Errorf("tile_min_width: attendu 300, eu %d", got.TileMinWidth)
+	}
+}