gin/middleware_test.go

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// Copyright 2014 Manu Martinez-Almeida. All rights reserved.
// Use of this source code is governed by a MIT style
// license that can be found in the LICENSE file.
package gin
import (
"errors"
"net/http"
"strings"
"testing"
"github.com/gin-contrib/sse"
"github.com/stretchr/testify/assert"
)
func TestMiddlewareGeneralCase(t *testing.T) {
signature := ""
router := New()
router.Use(func(c *Context) {
signature += "A"
c.Next()
signature += "B"
})
router.Use(func(c *Context) {
signature += "C"
})
router.GET("/", func(c *Context) {
signature += "D"
})
router.NoRoute(func(c *Context) {
signature += " X "
})
router.NoMethod(func(c *Context) {
signature += " XX "
})
// RUN
w := performRequest(router, "GET", "/")
// TEST
assert.Equal(t, http.StatusOK, w.Code)
assert.Equal(t, "ACDB", signature)
}
func TestMiddlewareNoRoute(t *testing.T) {
signature := ""
router := New()
router.Use(func(c *Context) {
signature += "A"
c.Next()
signature += "B"
})
router.Use(func(c *Context) {
signature += "C"
c.Next()
c.Next()
c.Next()
c.Next()
signature += "D"
})
router.NoRoute(func(c *Context) {
signature += "E"
c.Next()
signature += "F"
}, func(c *Context) {
signature += "G"
c.Next()
signature += "H"
})
router.NoMethod(func(c *Context) {
signature += " X "
})
// RUN
w := performRequest(router, "GET", "/")
// TEST
assert.Equal(t, http.StatusNotFound, w.Code)
assert.Equal(t, "ACEGHFDB", signature)
}
func TestMiddlewareNoMethodEnabled(t *testing.T) {
signature := ""
router := New()
router.HandleMethodNotAllowed = true
router.Use(func(c *Context) {
signature += "A"
c.Next()
signature += "B"
})
router.Use(func(c *Context) {
signature += "C"
c.Next()
signature += "D"
})
router.NoMethod(func(c *Context) {
signature += "E"
c.Next()
signature += "F"
}, func(c *Context) {
signature += "G"
c.Next()
signature += "H"
})
router.NoRoute(func(c *Context) {
signature += " X "
})
router.POST("/", func(c *Context) {
signature += " XX "
})
// RUN
w := performRequest(router, "GET", "/")
// TEST
assert.Equal(t, http.StatusMethodNotAllowed, w.Code)
assert.Equal(t, "ACEGHFDB", signature)
}
func TestMiddlewareNoMethodDisabled(t *testing.T) {
signature := ""
router := New()
// NoMethod disabled
router.HandleMethodNotAllowed = false
router.Use(func(c *Context) {
signature += "A"
c.Next()
signature += "B"
})
router.Use(func(c *Context) {
signature += "C"
c.Next()
signature += "D"
})
router.NoMethod(func(c *Context) {
signature += "E"
c.Next()
signature += "F"
}, func(c *Context) {
signature += "G"
c.Next()
signature += "H"
})
router.NoRoute(func(c *Context) {
signature += " X "
})
router.POST("/", func(c *Context) {
signature += " XX "
})
// RUN
w := performRequest(router, "GET", "/")
// TEST
assert.Equal(t, http.StatusNotFound, w.Code)
assert.Equal(t, "AC X DB", signature)
}
func TestMiddlewareAbort(t *testing.T) {
signature := ""
router := New()
router.Use(func(c *Context) {
signature += "A"
})
router.Use(func(c *Context) {
signature += "C"
c.AbortWithStatus(http.StatusUnauthorized)
c.Next()
signature += "D"
})
router.GET("/", func(c *Context) {
signature += " X "
c.Next()
signature += " XX "
})
// RUN
w := performRequest(router, "GET", "/")
// TEST
assert.Equal(t, http.StatusUnauthorized, w.Code)
assert.Equal(t, "ACD", signature)
}
func TestMiddlewareAbortHandlersChainAndNext(t *testing.T) {
signature := ""
router := New()
router.Use(func(c *Context) {
signature += "A"
c.Next()
c.AbortWithStatus(http.StatusGone)
signature += "B"
})
router.GET("/", func(c *Context) {
signature += "C"
c.Next()
})
// RUN
w := performRequest(router, "GET", "/")
// TEST
assert.Equal(t, http.StatusGone, w.Code)
assert.Equal(t, "ACB", signature)
}
// TestFailHandlersChain - ensure that Fail interrupt used middleware in fifo order as
// as well as Abort
func TestMiddlewareFailHandlersChain(t *testing.T) {
// SETUP
signature := ""
router := New()
router.Use(func(context *Context) {
signature += "A"
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context.AbortWithError(http.StatusInternalServerError, errors.New("foo")) // nolint: errcheck
})
router.Use(func(context *Context) {
signature += "B"
context.Next()
signature += "C"
})
// RUN
w := performRequest(router, "GET", "/")
// TEST
assert.Equal(t, http.StatusInternalServerError, w.Code)
assert.Equal(t, "A", signature)
}
func TestMiddlewareWrite(t *testing.T) {
router := New()
router.Use(func(c *Context) {
c.String(http.StatusBadRequest, "hola\n")
})
router.Use(func(c *Context) {
c.XML(http.StatusBadRequest, H{"foo": "bar"})
})
router.Use(func(c *Context) {
c.JSON(http.StatusBadRequest, H{"foo": "bar"})
})
router.GET("/", func(c *Context) {
c.JSON(http.StatusBadRequest, H{"foo": "bar"})
}, func(c *Context) {
c.Render(http.StatusBadRequest, sse.Event{
Event: "test",
Data: "message",
})
})
w := performRequest(router, "GET", "/")
assert.Equal(t, http.StatusBadRequest, w.Code)
assert.Equal(t, strings.Replace("hola\n<map><foo>bar</foo></map>{\"foo\":\"bar\"}{\"foo\":\"bar\"}event:test\ndata:message\n\n", " ", "", -1), strings.Replace(w.Body.String(), " ", "", -1))
}