wip-devtools

system_monitor_test.go

@@ -0,0 +1,82 @@
+package mujica
+
+import (
+	"math"
+	"strings"
+	"testing"
+	"time"
+
+	"github.com/egoist/mygo/ui"
+)
+
+func monitorSample(n int) ([]time.Time, []MonitorMetric) {
+	t0 := time.Date(2026, 10, 5, 21, 0, 0, 0, time.UTC)
+	times := make([]time.Time, n)
+	cpu, mem := make([]float64, n), make([]float64, n)
+	for i := range n {
+		times[i] = t0.Add(time.Duration(i) * 5 * time.Second)
+		cpu[i] = 40 + 20*math.Sin(float64(i)/4)
+		mem[i] = 3.2 + float64(i)*0.02
+	}
+	return times, []MonitorMetric{{Name: "CPU", Unit: "%", Samples: cpu}, {Name: "Memory", Unit: "GB", Samples: mem}}
+}
+
+func TestSystemMonitorLiveAndKeyboard(t *testing.T) {
+	times, metrics := monitorSample(20)
+	tt := ui.NewTester(func(c *ui.Context) {
+		Use(c, Settings{})
+		SystemMonitor(c, times, metrics, SystemMonitorOptions{})
+	}, 600, 420)
+	if !tt.HasText("3.6 GB") || !tt.HasText("20.0 %") {
+		t.Fatalf("latest samples missing: %q", tt.Texts())
+	}
+	times, metrics = monitorSample(21)
+	tt.Frame()
+	if !tt.HasText("20.8 %") || tt.HasText("20.0 %") {
+		t.Fatalf("new sample: %q", tt.Texts())
+	}
+	tt.Key(0, ui.KeyTab) // the legend key
+	tt.Key(0, ui.KeyTab) // the plot
+	tt.Key(0, ui.KeyEnd)
+	found := false
+	for _, s := range tt.Texts() {
+		found = found || strings.Contains(s, "21:01:40")
+	}
+	if !found {
+		t.Fatalf("keyboard readout: %q", tt.Texts())
+	}
+}
+
+func TestSystemMonitorStatesAndRules(t *testing.T) {
+	times, metrics := monitorSample(5)
+	retries := 0
+	tt := ui.NewTester(func(c *ui.Context) {
+		Use(c, Settings{})
+		if SystemMonitor(c, times, metrics[:1], SystemMonitorOptions{Status: DataFailed, Error: "agent offline"}).Retry {
+			retries++
+		}
+	}, 600, 300)
+	if !tt.HasText("agent offline") {
+		t.Fatalf("error: %q", tt.Texts())
+	}
+	_ = tt.Click("Retry")
+	if retries != 1 {
+		t.Fatal("retry not reported")
+	}
+	defer func() {
+		if recover() == nil {
+			t.Fatal("mismatched samples did not panic")
+		}
+	}()
+	ui.NewTester(func(c *ui.Context) {
+		Use(c, Settings{})
+		SystemMonitor(c, times, []MonitorMetric{{Name: "x", Samples: []float64{1}}}, SystemMonitorOptions{})
+	}, 200, 200)
+}
+
+func TestSystemMonitorSnapshot(t *testing.T) {
+	times, metrics := monitorSample(40)
+	snapshot(t, "system_monitor", 560, 380, func(c *ui.Context) {
+		ui.Column(c).Padding(16).Children(func() { SystemMonitor(c, times, metrics, SystemMonitorOptions{}) })
+	})
+}