fix bug

Allenxuxu · Dec 19, 2019 · bc8f1e1 · bc8f1e1
1 parent ca21ca4
commit bc8f1e1
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Showing 2 changed files with 11 additions and 1 deletion.
diff --git a/ring_buffer.go b/ring_buffer.go
@@ -431,6 +431,6 @@ func (r *RingBuffer) free() int {
 func copyByte(f, e []byte) []byte {
 	buf := make([]byte, len(f)+len(e))
 	_ = copy(buf, f)
-	_ = copy(buf, e)
+	_ = copy(buf[len(f):], e)
 	return buf
 }
diff --git a/ring_buffer_test.go b/ring_buffer_test.go
@@ -628,3 +628,13 @@ func TestRingBuffer_PeekUintXX(t *testing.T) {
 	}
 	rb.Retrieve(8)
 }
+
+func TestCopyBytes(t *testing.T) {
+	f := []byte("1234")
+	e := []byte("abcd")
+
+	out := copyByte(f, e)
+	if !bytes.Equal(out, []byte("1234abcd")) {
+		t.Fatal(string(out))
+	}
+}