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, 24 insertions, 0 deletions

diff --git a/status_test.go b/status_test.go
new file mode 100644
index 0000000..e3bfa8a
--- /dev/null
+++ b/status_test.go
@@ -0,0 +1,24 @@
+package fasthttp
+
+import (
+	"bytes"
+	"testing"
+)
+
+func TestStatusLine(t *testing.T) {
+	t.Parallel()
+
+	testStatusLine(t, -1, []byte("HTTP/1.1 -1 Unknown Status Code\r\n"))
+	testStatusLine(t, 99, []byte("HTTP/1.1 99 Unknown Status Code\r\n"))
+	testStatusLine(t, 200, []byte("HTTP/1.1 200 OK\r\n"))
+	testStatusLine(t, 512, []byte("HTTP/1.1 512 Unknown Status Code\r\n"))
+	testStatusLine(t, 512, []byte("HTTP/1.1 512 Unknown Status Code\r\n"))
+	testStatusLine(t, 520, []byte("HTTP/1.1 520 Unknown Status Code\r\n"))
+}
+
+func testStatusLine(t *testing.T, statusCode int, expected []byte) {
+	line := statusLine(statusCode)
+	if !bytes.Equal(expected, line) {
+		t.Fatalf("unexpected status line %s. Expecting %s", string(line), string(expected))
+	}
+}