Initial Proxmox dashboard with host and guest metrics

memory_test.go

@@ -0,0 +1,33 @@
+package main
+
+import (
+	"os"
+	"path/filepath"
+	"testing"
+)
+
+func TestReadMemoryMetrics(t *testing.T) {
+	path := filepath.Join(t.TempDir(), "meminfo")
+	content := `MemTotal:       1000000 kB
+MemAvailable:    400000 kB
+Buffers:          10000 kB
+Cached:          200000 kB
+SReclaimable:     10000 kB
+SwapTotal:       500000 kB
+SwapFree:        300000 kB
+`
+	if err := os.WriteFile(path, []byte(content), 0o600); err != nil {
+		t.Fatal(err)
+	}
+
+	memory, err := readMemoryMetrics(path)
+	if err != nil {
+		t.Fatal(err)
+	}
+	if memory.UsagePercent != 60 || memory.SwapPercent != 40 {
+		t.Fatalf("неожиданные проценты памяти: %+v", memory)
+	}
+	if memory.CachedBytes != 210000*1024 {
+		t.Fatalf("неожиданный размер кэша: %d", memory.CachedBytes)
+	}
+}