From 4a9848af6fb83ffec682737e9046fd6db6d05ead Mon Sep 17 00:00:00 2001
From: Paul Buetow <paul@buetow.org>
Date: Sun, 1 Mar 2026 23:15:16 +0200
Subject: eventloop: reuse comm resolver for pid seeding (task 317)

---
 internal/eventloop_seed_test.go | 51 +++++++++++++++++++++++++++++++++++++++++
 1 file changed, 51 insertions(+)
 create mode 100644 internal/eventloop_seed_test.go

(limited to 'internal/eventloop_seed_test.go')

diff --git a/internal/eventloop_seed_test.go b/internal/eventloop_seed_test.go
new file mode 100644
index 0000000..f8e631a
--- /dev/null
+++ b/internal/eventloop_seed_test.go
@@ -0,0 +1,51 @@
+package internal
+
+import (
+	"os"
+	"testing"
+
+	"ior/internal/flags"
+)
+
+func TestSeedTrackedPidCommCachesTrackedPidComm(t *testing.T) {
+	oldPID := flags.Get().PidFilter
+	flags.SetPidFilter(os.Getpid())
+	t.Cleanup(func() {
+		flags.SetPidFilter(oldPID)
+	})
+
+	el := &eventLoop{
+		comms: make(map[uint32]string),
+	}
+
+	pid := uint32(os.Getpid())
+	want := el.comm(pid)
+	if want == "" {
+		t.Fatalf("expected comm for pid %d", pid)
+	}
+	delete(el.comms, pid)
+
+	el.seedTrackedPidComm()
+
+	if got := el.comms[pid]; got != want {
+		t.Fatalf("seeded comm = %q, want %q", got, want)
+	}
+}
+
+func TestSeedTrackedPidCommSkipsWhenPidFilterDisabled(t *testing.T) {
+	oldPID := flags.Get().PidFilter
+	flags.SetPidFilter(-1)
+	t.Cleanup(func() {
+		flags.SetPidFilter(oldPID)
+	})
+
+	el := &eventLoop{
+		comms: make(map[uint32]string),
+	}
+
+	el.seedTrackedPidComm()
+
+	if len(el.comms) != 0 {
+		t.Fatalf("expected no comms to be seeded when pid filter is disabled")
+	}
+}
-- 
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