improvements on cookie options

Former-commit-id: f1d5cfc88a33077a9359eaa25b6a20265f5632b5

_examples/cookies/options/main_test.go

@@ -0,0 +1,32 @@
+package main
+
+import (
+	"fmt"
+	"testing"
+
+	"github.com/kataras/iris/v12/httptest"
+)
+
+func TestCookieOptions(t *testing.T) {
+	app := newApp()
+	e := httptest.New(t, app, httptest.URL("http://example.com"))
+
+	cookieName, cookieValue := "my_cookie_name", "my_cookie_value"
+
+	// Test set a Cookie.
+	t1 := e.GET(fmt.Sprintf("/set/%s/%s", cookieName, cookieValue)).Expect().Status(httptest.StatusOK)
+	t1.Cookie(cookieName).Value().Equal(cookieValue)
+	t1.Body().Contains(fmt.Sprintf("%s=%s", cookieName, cookieValue))
+
+	// Test retrieve a Cookie.
+	t2 := e.GET(fmt.Sprintf("/get/%s", cookieName)).Expect().Status(httptest.StatusOK)
+	t2.Body().Equal(cookieValue)
+
+	// Test remove a Cookie.
+	t3 := e.GET(fmt.Sprintf("/remove/%s", cookieName)).Expect().Status(httptest.StatusOK)
+	t3.Body().Contains(fmt.Sprintf("cookie %s removed, value should be empty=%s", cookieName, ""))
+
+	t4 := e.GET(fmt.Sprintf("/get/%s", cookieName)).Expect().Status(httptest.StatusOK)
+	t4.Cookies().Empty()
+	t4.Body().Empty()
+}