From 1684e471ae871e63734596995bd2c98ed250c905 Mon Sep 17 00:00:00 2001
From: Frederik Creemers <frederikcreemers@gmail.com>
Date: Sat, 29 Jul 2017 20:01:56 +0200
Subject: [PATCH] Add Cookies.Delete method

---
 cookies.go      | 13 +++++++++++++
 cookies_test.go | 12 ++++++++++++
 2 files changed, 25 insertions(+)

diff --git a/cookies.go b/cookies.go
index eeac1a856..131317a64 100644
--- a/cookies.go
+++ b/cookies.go
@@ -44,3 +44,16 @@ func (c *Cookies) SetWithExpirationTime(name, value string, expires time.Time) {
 
 	http.SetCookie(c.res, &ck)
 }
+
+// Delete sets a header that tells the browser to remove the cookie with the given name.
+func (c *Cookies) Delete(name string) {
+	ck := http.Cookie{
+		Name:  name,
+		Value: "v",
+		// Setting a time in the distant past, like the unix epoch, removes the cookie,
+		// since it has long expired.
+		Expires: time.Unix(0, 0),
+	}
+
+	http.SetCookie(c.res, &ck)
+}
diff --git a/cookies_test.go b/cookies_test.go
index fa45bdefe..67a7306fe 100644
--- a/cookies_test.go
+++ b/cookies_test.go
@@ -51,3 +51,15 @@ func TestCookies_SetWithExpirationTime(t *testing.T) {
 	h := res.Header().Get("Set-Cookie")
 	r.Equal("name=Rob Pike; Expires=Sat, 29 Jul 2017 19:28:45 GMT", h)
 }
+
+func TestCookies_Delete(t *testing.T) {
+	r := require.New(t)
+	res := httptest.NewRecorder()
+
+	c := Cookies{&http.Request{}, res}
+
+	c.Delete("remove-me")
+
+	h := res.Header().Get("Set-Cookie")
+	r.Equal("remove-me=v; Expires=Thu, 01 Jan 1970 00:00:00 GMT", h)
+}