improve statusLine and StatusMessage by using slice instead of map (#855)

* 🚀 improve statusLine and StatusMessage by using slice instead of map

Co-authored-by: Fenny <fenny@gofiber.io>
Co-authored-by: ReneWerner87 <rene@gofiber.io>

* for cli stuff

* make invalidStatusLine() just return the formatted line

* for ci stuff

Co-authored-by: Fenny <fenny@gofiber.io>
Co-authored-by: ReneWerner87 <rene@gofiber.io>

1 files changed, 29 insertions, 0 deletions

diff --git a/status_timing_test.go b/status_timing_test.go
new file mode 100644
index 0000000..42b1c91
--- /dev/null
+++ b/status_timing_test.go
@@ -0,0 +1,29 @@
+package fasthttp
+
+import (
+	"bytes"
+	"testing"
+)
+
+func BenchmarkStatusLine99(b *testing.B) {
+	benchmarkStatusLine(b, 99, []byte("HTTP/1.1 99 Unknown Status Code\r\n"))
+}
+
+func BenchmarkStatusLine200(b *testing.B) {
+	benchmarkStatusLine(b, 200, []byte("HTTP/1.1 200 OK\r\n"))
+}
+
+func BenchmarkStatusLine512(b *testing.B) {
+	benchmarkStatusLine(b, 512, []byte("HTTP/1.1 512 Unknown Status Code\r\n"))
+}
+
+func benchmarkStatusLine(b *testing.B, statusCode int, expected []byte) {
+	b.RunParallel(func(pb *testing.PB) {
+		for pb.Next() {
+			line := statusLine(statusCode)
+			if !bytes.Equal(expected, line) {
+				b.Fatalf("unexpected status line %s. Expecting %s", string(line), string(expected))
+			}
+		}
+	})
+}