Add persistent thresholds and seven-day metrics history

history_test.go

@@ -0,0 +1,14 @@
+package main
+
+import "testing"
+
+func TestHistoryPointFromMetrics(t *testing.T) {
+	metrics := dashboardMetrics{
+		CPU:    CPUMetrics{Temperatures: []Temperature{{Celsius: 40}, {Celsius: 60}}},
+		Guests: GuestsMetrics{Guests: []GuestMetrics{{Status: "running", CPU: .5, MaxCPU: 4, MemoryBytes: 50, MaxMemory: 100}}},
+	}
+	point := historyPointFromMetrics(metrics)
+	if point.CPUTemperature != 50 || point.GuestsCPU != 50 || point.GuestsMemory != 50 {
+		t.Fatalf("неожиданная историческая точка: %+v", point)
+	}
+}