From f32beffd333b771fba791b9d60abcced5dd88238 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Roberto=20Abdelkader=20Mart=C3=ADnez=20P=C3=A9rez?=
 <robertomartinezp@gmail.com>
Date: Wed, 2 Oct 2019 16:20:39 +0200
Subject: [PATCH] New function GetReason to get HTTP reason phrase from an
 http.Request

---
 http/reason.go      | 14 +++++++++++++
 http/reason_test.go | 48 +++++++++++++++++++++++++++++++++++++++++++++
 2 files changed, 62 insertions(+)
 create mode 100644 http/reason.go
 create mode 100644 http/reason_test.go

diff --git a/http/reason.go b/http/reason.go
new file mode 100644
index 0000000..458adf9
--- /dev/null
+++ b/http/reason.go
@@ -0,0 +1,14 @@
+package http
+
+import (
+	"net/http"
+	"strings"
+)
+
+func GetReason(r *http.Response) string {
+	if i := strings.IndexByte(r.Status, ' '); i != -1 {
+		return r.Status[i+1:]
+	} else {
+		return ""
+	}
+}
diff --git a/http/reason_test.go b/http/reason_test.go
new file mode 100644
index 0000000..6a1521e
--- /dev/null
+++ b/http/reason_test.go
@@ -0,0 +1,48 @@
+package http
+
+import (
+	nethttp "net/http"
+	"testing"
+)
+
+func TestEmptyStringIsEmptyReason(t *testing.T) {
+	r := &nethttp.Response{Status: ""}
+	if GetReason(r) != "" {
+		t.Errorf("We consider an empty status line to have an empty reason")
+	}
+}
+
+func TestOnlyCodeIsEmptyReason(t *testing.T) {
+	r := &nethttp.Response{Status: "200"}
+	if GetReason(r) != "" {
+		t.Errorf("We consider an status line with just the status code to have an empty reason")
+	}
+}
+
+func TestOnlyCodePlusSpaceIsEmptyReason(t *testing.T) {
+	r := &nethttp.Response{Status: "200 "}
+	if GetReason(r) != "" {
+		t.Errorf("We consider an status line with just the status code to have an empty reason")
+	}
+}
+
+func TestOneWordReason(t *testing.T) {
+	r := &nethttp.Response{Status: "200 FOO"}
+	if GetReason(r) != "FOO" {
+		t.Errorf("Unexpected reason found")
+	}
+}
+
+func TestMultiWordReason(t *testing.T) {
+	r := &nethttp.Response{Status: "200 FOO BAR BAZ"}
+	if GetReason(r) != "FOO BAR BAZ" {
+		t.Errorf("Unexpected reason found")
+	}
+}
+
+func TestOddSizeStatusCode(t *testing.T) {
+	r := &nethttp.Response{Status: "2 FOO BAR BAZ"}
+	if GetReason(r) != "FOO BAR BAZ" {
+		t.Errorf("Unexpected reason found")
+	}
+}