diff --git a/rate_limiter_channel_test.go b/rate_limiter_channel_test.go
new file mode 100644
index 0000000..f62586c
--- /dev/null
+++ b/rate_limiter_channel_test.go
@@ -0,0 +1,27 @@
+// Copyright 2019 Yegor Myskin. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package tailor
+
+import (
+	"testing"
+	"time"
+)
+
+func TestChannelBasedRateLimiterDisallow(t *testing.T) {
+	l := NewChannelBasedRateLimiter(30)
+	defer l.Close()
+
+	start := time.Now()
+	for i := 0; i < 100; i++ {
+		if !l.Allow() {
+			t.FailNow()
+		}
+	}
+	dur := time.Since(start)
+
+	if dur < 3333*time.Millisecond || dur > 3500*time.Millisecond {
+		t.Errorf("expected duration: ~3.33s, actual: %s", dur)
+	}
+}
diff --git a/seeker_test.go b/seeker_test.go
index aeb31b4..27a7048 100644
--- a/seeker_test.go
+++ b/seeker_test.go
@@ -1,3 +1,7 @@
+// Copyright 2019 Yegor Myskin. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
 package tailor
 
 import (