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package dashboard
import (
"strings"
"testing"
"time"
"ior/internal/statsengine"
"github.com/charmbracelet/lipgloss"
)
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:",
"Gap:",
"Throughput:",
"Top syscalls:",
"Top files:",
"Top processes:",
"Latency buckets:",
"Gap buckets:",
} {
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)
}
}
func TestOverviewSummariesIncludeFilesProcessesAndHistograms(t *testing.T) {
snap := statsengine.NewSnapshot(
nil, nil, nil,
[]statsengine.SyscallSnapshot{{Name: "read", Count: 2}},
[]statsengine.FileSnapshot{{Path: "/tmp/very/long/path/file.log", Accesses: 4}},
[]statsengine.ProcessSnapshot{{PID: 12, Comm: "proc", Syscalls: 7}},
statsengine.NewHistogramSnapshot(3, []statsengine.HistogramBucketSnapshot{
{Label: "[0,1us)", Count: 2},
{Label: "[1us,10us)", Count: 1},
}),
statsengine.NewHistogramSnapshot(1, []statsengine.HistogramBucketSnapshot{
{Label: "[10us,100us)", Count: 1},
}),
)
out := renderOverview(&snap, 120, 40)
for _, token := range []string{"Top files:", "Top processes:", "Latency buckets:", "Gap buckets:"} {
if !strings.Contains(out, token) {
t.Fatalf("expected %q in overview output", token)
}
}
}
func TestRenderOverviewDoesNotOverflowWidth(t *testing.T) {
snap := statsengine.NewSnapshot(
[]float64{10, 20, 15, 30, 18, 35, 40},
[]float64{2, 4, 3, 5, 7, 6, 8},
[]float64{1024, 2048, 4096, 2048, 1024},
[]statsengine.SyscallSnapshot{{Name: "read", Count: 20}},
[]statsengine.FileSnapshot{{Path: "/tmp/very/long/path/to/file.log", Accesses: 10}},
[]statsengine.ProcessSnapshot{{PID: 42, Comm: "proc", Syscalls: 30}},
statsengine.HistogramSnapshot{},
statsengine.HistogramSnapshot{},
)
const width = 120
out := renderOverview(&snap, width, 30)
for _, line := range strings.Split(out, "\n") {
if lipgloss.Width(line) > width {
t.Fatalf("overview line exceeds width %d: got %d in %q", width, lipgloss.Width(line), line)
}
}
}
func TestRenderOverviewSparklineHasSafetyMargin(t *testing.T) {
const panelInner = 80
out := renderOverviewSparkline("Latency:", []float64{1, 2, 3, 4, 5}, panelInner)
lines := strings.Split(out, "\n")
if len(lines) != 2 {
t.Fatalf("expected 2-line sparkline, got %q", out)
}
if got, max := lipgloss.Width(lines[0]), panelInner-sparklineSafetyMargin; got > max {
t.Fatalf("expected sparkline width <= %d with safety margin, got %d", max, got)
}
}
func TestRenderOverviewSparklineCapsWidth(t *testing.T) {
out := renderOverviewSparkline("Latency:", make([]float64, 120), 400)
lines := strings.Split(out, "\n")
if len(lines) != 2 {
t.Fatalf("expected 2-line sparkline, got %q", out)
}
if got := lipgloss.Width(lines[0]) - len("Latency: "); got > sparklineMaxWidth {
t.Fatalf("expected capped sparkline width <= %d, got %d", sparklineMaxWidth, got)
}
}
func TestRenderOverviewSparklineAlignedUsesSameSparkStartColumn(t *testing.T) {
const panelInner = 80
labelWidth := maxLabelWidth("Latency:", "Gap:", "Throughput:")
lat := renderOverviewSparklineAligned("Latency:", []float64{1, 2, 3}, panelInner, labelWidth)
gap := renderOverviewSparklineAligned("Gap:", []float64{1, 2, 3}, panelInner, labelWidth)
thr := renderOverviewSparklineAligned("Throughput:", []float64{1, 2, 3}, panelInner, labelWidth)
latTop := strings.Split(lat, "\n")[0]
gapTop := strings.Split(gap, "\n")[0]
thrTop := strings.Split(thr, "\n")[0]
prefix := strings.Repeat(" ", labelWidth-len("Latency:"))
if !strings.HasPrefix(latTop, "Latency:"+prefix+" ") {
t.Fatalf("unexpected latency prefix: %q", latTop)
}
prefix = strings.Repeat(" ", labelWidth-len("Gap:"))
if !strings.HasPrefix(gapTop, "Gap:"+prefix+" ") {
t.Fatalf("unexpected gap prefix: %q", gapTop)
}
if !strings.HasPrefix(thrTop, "Throughput: ") {
t.Fatalf("unexpected throughput prefix: %q", thrTop)
}
}
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