feat: clear and delete cookies [#2476]

js/modules/k6/http/cookiejar.go

@@ -100,3 +100,32 @@ func (j CookieJar) Set(url, name, value string, opts goja.Value) (bool, error) {
 	j.Jar.SetCookies(u, []*http.Cookie{&c})
 	return true, nil
 }
+
+// Clear all cookies for a particular URL
+func (j CookieJar) Clear(url string, opts goja.Value) (bool, error) {
+	u, err := neturl.Parse(url)
+	if err != nil {
+		return false, err
+	}
+
+	cookies := j.Jar.Cookies(u)
+	for _, c := range cookies {
+		c.MaxAge = -1
+	}
+	j.Jar.SetCookies(u, cookies)
+
+	return true, nil
+}
+
+// Delete cookies for a particular URL
+func (j CookieJar) Delete(url, name string, opts goja.Value) (bool, error) {
+	u, err := neturl.Parse(url)
+	if err != nil {
+		return false, err
+	}
+
+	c := http.Cookie{Name: name, MaxAge: -1}
+	j.Jar.SetCookies(u, []*http.Cookie{&c})
+
+	return true, nil
+}