1 files changed, 81 insertions, 0 deletions
diff --git a/internal/tui/dashboard/pathlabel_test.go b/internal/tui/dashboard/pathlabel_test.go
new file mode 100644
index 0000000..66d3ff0
--- /dev/null
+++ b/internal/tui/dashboard/pathlabel_test.go
@@ -0,0 +1,81 @@
+package dashboard
+
+import (
+	"testing"
+
+	"ior/internal/statsengine"
+)
+
+func TestRootPathLabelFromFSPath(t *testing.T) {
+	cases := []struct {
+		in   string
+		want string
+	}{
+		{in: "", want: "root"},
+		{in: "/", want: "root"},
+		{in: "/var/log", want: "root/var/log"},
+		{in: "var/log", want: "root/var/log"},
+		{in: "./tmp", want: "root/tmp"},
+	}
+	for _, tc := range cases {
+		if got := rootPathLabelFromFSPath(tc.in); got != tc.want {
+			t.Fatalf("rootPathLabelFromFSPath(%q)=%q want %q", tc.in, got, tc.want)
+		}
+	}
+}
+
+func TestTreemapRootPathTextDirectoryOnly(t *testing.T) {
+	snap := statsengine.NewSnapshot(
+		nil,
+		nil,
+		nil,
+		[]statsengine.SyscallSnapshot{{Name: "read", Count: 3, Bytes: 12}},
+		[]statsengine.FileSnapshot{{Path: "/var/log/app.log", Accesses: 4, BytesRead: 16, BytesWritten: 8}},
+		[]statsengine.ProcessSnapshot{{PID: 42, Comm: "proc", Syscalls: 5, Bytes: 20}},
+		statsengine.HistogramSnapshot{},
+		statsengine.HistogramSnapshot{},
+	)
+
+	sysItems := buildSyscallTreemapItems(&snap, bubbleMetricCount)
+	if len(sysItems) == 0 || sysItems[0].Name != "read" {
+		t.Fatalf("expected syscall treemap label to stay native, got %#v", sysItems)
+	}
+
+	fileItems := buildFilesTreemapItems(&snap, bubbleMetricCount)
+	if len(fileItems) == 0 || fileItems[0].Name != "root/var/log" {
+		t.Fatalf("expected files treemap label root path, got %#v", fileItems)
+	}
+
+	procItems := buildProcessesTreemapItems(&snap, bubbleMetricCount)
+	if len(procItems) == 0 || procItems[0].Name != "42:proc" {
+		t.Fatalf("expected process treemap label to stay native, got %#v", procItems)
+	}
+}
+
+func TestBubbleRootPathTextDirectoryOnly(t *testing.T) {
+	snap := statsengine.NewSnapshot(
+		nil,
+		nil,
+		nil,
+		[]statsengine.SyscallSnapshot{{Name: "write", Count: 2, Bytes: 64}},
+		[]statsengine.FileSnapshot{{Path: "/home/paul/.config/a", Accesses: 1, BytesRead: 5, BytesWritten: 7}},
+		[]statsengine.ProcessSnapshot{{PID: 7, Comm: "worker", Syscalls: 9, Bytes: 70}},
+		statsengine.HistogramSnapshot{},
+		statsengine.HistogramSnapshot{},
+	)
+
+	sys := syscallBubbleData(&snap)
+	if len(sys) == 0 || sys[0].Label != "write" {
+		t.Fatalf("expected syscall bubble label to stay native, got %#v", sys)
+	}
+
+	files := filesDirBubbleData(&snap)
+	if len(files) == 0 || files[0].Label != "root/home/paul/.config" {
+		t.Fatalf("expected files bubble label full root path, got %#v", files)
+	}
+
+	procs := processBubbleData(&snap)
+	if len(procs) == 0 || procs[0].Label != "7:worker" {
+		t.Fatalf("expected process bubble label to stay native, got %#v", procs)
+	}
+}