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package dashboard
import (
"strings"
"testing"
"time"
"ior/internal/statsengine"
)
func TestRenderOverviewIncludesCoreMetrics(t *testing.T) {
snap := &statsengine.Snapshot{
Elapsed: 95 * time.Second,
TotalSyscalls: 1200,
SyscallRatePerSec: 12.5,
TotalBytes: 10 * 1024 * 1024,
ReadBytesPerSec: 4096,
WriteBytesPerSec: 8192,
TotalErrors: 12,
LatencyMeanNs: 5000,
LatencyTrend: statsengine.Trend{Direction: statsengine.TrendRising, DeltaPercent: 12.5},
GapTrend: statsengine.Trend{Direction: statsengine.TrendFalling, DeltaPercent: -7.4},
ThroughputTrend: statsengine.Trend{Direction: statsengine.TrendStable, DeltaPercent: 0},
}
out := renderOverview(snap, 120, 40)
for _, token := range []string{
"Elapsed:",
"Syscalls:",
"Read/s:",
"Errors:",
"Trends:",
"Latency:",
"Throughput:",
"Top syscalls:",
} {
if !strings.Contains(out, token) {
t.Fatalf("expected token %q in overview output", token)
}
}
}
func TestSummarizeTopSyscalls(t *testing.T) {
snap := statsengine.NewSnapshot(
nil, nil, nil,
[]statsengine.SyscallSnapshot{
{Name: "read", Count: 50},
{Name: "write", Count: 20},
{Name: "openat", Count: 10},
{Name: "close", Count: 5},
},
nil, nil,
statsengine.HistogramSnapshot{},
statsengine.HistogramSnapshot{},
)
got := summarizeTopSyscalls(&snap)
if got != "read(50), write(20), openat(10)" {
t.Fatalf("unexpected top syscall summary: %q", got)
}
}
func TestRenderOverviewWithoutSnapshot(t *testing.T) {
out := renderOverview(nil, 80, 24)
if !strings.Contains(out, "waiting for stats") {
t.Fatalf("expected waiting placeholder, got %q", out)
}
}
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