From: Joe Wreschnig <joe.wreschnig@gmail.com>
Date: Sat, 13 Jun 2020 15:45:28 +0000 (+0200)
Subject: Add a benchmark for precompleted context creation
X-Git-Url: https://git.korewanetadesu.com/?p=go-signalcontext.git;a=commitdiff_plain;h=3ee8799a0bb3e7ba3628b83832fb14462241643d;ds=sidebyside

Add a benchmark for precompleted context creation
---

diff --git a/context_test.go b/context_test.go
index a7b30a4..0fa10d7 100644
--- a/context_test.go
+++ b/context_test.go
@@ -64,7 +64,7 @@ func TestCancelAfterSignal(t *testing.T) {
 	assert.Equal(t, Error{syscall.SIGUSR2}, ctx.Err())
 }
 
-func TestImmediateCompletion(t *testing.T) {
+func TestPrecompleted(t *testing.T) {
 	parent, cancel := context.WithCancel(context.Background())
 	cancel()
 	<-parent.Done()
@@ -120,3 +120,14 @@ func BenchmarkCanceledAsChild(b *testing.B) {
 		<-children[i].Done()
 	}
 }
+
+func BenchmarkPrecompleted(b *testing.B) {
+	parent, cancel := context.WithCancel(context.Background())
+	cancel()
+	<-parent.Done()
+	b.ResetTimer()
+	for i := 0; i < b.N; i++ {
+		ctx := UntilSignal(parent, syscall.SIGUSR2)
+		<-ctx.Done()
+	}
+}