From 3690b89082215ff5c1fc84110074cf08b1b8909c Mon Sep 17 00:00:00 2001
From: Paul Buetow <paul@buetow.org>
Date: Sun, 1 Mar 2026 23:33:46 +0200
Subject: Route non-fatal event-loop warnings to TUI

---
 internal/tui/eventstream/streamevent.go      | 16 ++++++++++++++++
 internal/tui/eventstream/streamevent_test.go | 26 ++++++++++++++++++++++++++
 2 files changed, 42 insertions(+)

(limited to 'internal/tui/eventstream')

diff --git a/internal/tui/eventstream/streamevent.go b/internal/tui/eventstream/streamevent.go
index a5c3d14..dbe04dd 100644
--- a/internal/tui/eventstream/streamevent.go
+++ b/internal/tui/eventstream/streamevent.go
@@ -3,6 +3,7 @@ package eventstream
 import (
 	"ior/internal/event"
 	"ior/internal/types"
+	"time"
 )
 
 type StreamEvent struct {
@@ -49,3 +50,18 @@ func NewStreamEvent(seq uint64, pair *event.Pair) StreamEvent {
 
 	return e
 }
+
+// NewWarningEvent creates a synthetic stream row for non-fatal runtime warnings.
+func NewWarningEvent(message string) StreamEvent {
+	now := uint64(time.Now().UnixNano())
+	return StreamEvent{
+		Seq:      now,
+		TimeNs:   now,
+		Syscall:  "warning",
+		Comm:     "ior",
+		FileName: message,
+		FD:       UnknownFD,
+		RetVal:   -1,
+		IsError:  true,
+	}
+}
diff --git a/internal/tui/eventstream/streamevent_test.go b/internal/tui/eventstream/streamevent_test.go
index 6be7407..6131fed 100644
--- a/internal/tui/eventstream/streamevent_test.go
+++ b/internal/tui/eventstream/streamevent_test.go
@@ -94,3 +94,29 @@ func TestNewStreamEventWithoutRetEvent(t *testing.T) {
 		t.Fatalf("FD = %d, want %d", got.FD, UnknownFD)
 	}
 }
+
+func TestNewWarningEventPopulatesFields(t *testing.T) {
+	got := NewWarningEvent("Dropped malformed event")
+
+	if got.Syscall != "warning" {
+		t.Fatalf("Syscall = %q, want warning", got.Syscall)
+	}
+	if got.Comm != "ior" {
+		t.Fatalf("Comm = %q, want ior", got.Comm)
+	}
+	if got.FileName != "Dropped malformed event" {
+		t.Fatalf("FileName = %q, want warning text", got.FileName)
+	}
+	if got.FD != UnknownFD {
+		t.Fatalf("FD = %d, want %d", got.FD, UnknownFD)
+	}
+	if got.RetVal != -1 {
+		t.Fatalf("RetVal = %d, want -1", got.RetVal)
+	}
+	if !got.IsError {
+		t.Fatalf("IsError = false, want true")
+	}
+	if got.Seq == 0 || got.TimeNs == 0 {
+		t.Fatalf("Seq/TimeNs = %d/%d, want non-zero", got.Seq, got.TimeNs)
+	}
+}
-- 
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