traefik/pkg/middlewares/stripprefix/strip_prefix_test.go

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package stripprefix
import (
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"context"
"net/http"
"net/http/httptest"
"testing"
"github.com/stretchr/testify/assert"
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"github.com/stretchr/testify/require"
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"github.com/traefik/traefik/v3/pkg/config/dynamic"
"github.com/traefik/traefik/v3/pkg/testhelpers"
)
func TestStripPrefix(t *testing.T) {
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testCases := []struct {
desc string
config dynamic.StripPrefix
path string
expectedStatusCode int
expectedPath string
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expectedRawPath string
expectedHeader string
}{
{
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desc: "no prefixes configured",
config: dynamic.StripPrefix{
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Prefixes: []string{},
},
path: "/noprefixes",
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expectedStatusCode: http.StatusOK,
expectedPath: "/noprefixes",
},
{
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desc: "wildcard (.*) requests",
config: dynamic.StripPrefix{
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Prefixes: []string{"/"},
},
path: "/",
expectedStatusCode: http.StatusOK,
expectedPath: "",
expectedHeader: "/",
},
{
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desc: "prefix and path matching",
config: dynamic.StripPrefix{
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Prefixes: []string{"/stat"},
},
path: "/stat",
expectedStatusCode: http.StatusOK,
expectedPath: "",
expectedHeader: "/stat",
},
{
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desc: "path prefix on exactly matching path",
config: dynamic.StripPrefix{
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Prefixes: []string{"/stat/"},
},
path: "/stat/",
expectedStatusCode: http.StatusOK,
expectedPath: "",
expectedHeader: "/stat/",
},
{
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desc: "path prefix on matching longer path",
config: dynamic.StripPrefix{
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Prefixes: []string{"/stat/"},
},
path: "/stat/us",
expectedStatusCode: http.StatusOK,
expectedPath: "/us",
expectedHeader: "/stat/",
},
{
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desc: "path prefix on mismatching path",
config: dynamic.StripPrefix{
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Prefixes: []string{"/stat/"},
},
path: "/status",
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expectedStatusCode: http.StatusOK,
expectedPath: "/status",
},
{
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desc: "general prefix on matching path",
config: dynamic.StripPrefix{
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Prefixes: []string{"/stat"},
},
path: "/stat/",
expectedStatusCode: http.StatusOK,
expectedPath: "/",
expectedHeader: "/stat",
},
{
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desc: "earlier prefix matching",
config: dynamic.StripPrefix{
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Prefixes: []string{"/stat", "/stat/us"},
},
path: "/stat/us",
expectedStatusCode: http.StatusOK,
expectedPath: "/us",
expectedHeader: "/stat",
},
{
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desc: "later prefix matching",
config: dynamic.StripPrefix{
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Prefixes: []string{"/mismatch", "/stat"},
},
path: "/stat",
expectedStatusCode: http.StatusOK,
expectedPath: "",
expectedHeader: "/stat",
},
{
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desc: "prefix matching within slash boundaries",
config: dynamic.StripPrefix{
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Prefixes: []string{"/stat"},
},
path: "/status",
expectedStatusCode: http.StatusOK,
expectedPath: "/us",
expectedHeader: "/stat",
},
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{
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desc: "raw path is also stripped",
config: dynamic.StripPrefix{
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Prefixes: []string{"/stat"},
},
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path: "/stat/a%2Fb",
expectedStatusCode: http.StatusOK,
expectedPath: "/a/b",
expectedRawPath: "/a%2Fb",
expectedHeader: "/stat",
},
}
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for _, test := range testCases {
test := test
t.Run(test.desc, func(t *testing.T) {
t.Parallel()
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var actualPath, actualRawPath, actualHeader, requestURI string
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next := http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
actualPath = r.URL.Path
actualRawPath = r.URL.RawPath
actualHeader = r.Header.Get(ForwardedPrefixHeader)
requestURI = r.RequestURI
})
handler, err := New(context.Background(), next, test.config, "foo-strip-prefix")
require.NoError(t, err)
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req := testhelpers.MustNewRequest(http.MethodGet, "http://localhost"+test.path, nil)
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req.RequestURI = req.URL.RequestURI()
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resp := &httptest.ResponseRecorder{Code: http.StatusOK}
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handler.ServeHTTP(resp, req)
assert.Equal(t, test.expectedStatusCode, resp.Code, "Unexpected status code.")
assert.Equal(t, test.expectedPath, actualPath, "Unexpected path.")
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assert.Equal(t, test.expectedRawPath, actualRawPath, "Unexpected raw path.")
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assert.Equal(t, test.expectedHeader, actualHeader, "Unexpected '%s' header.", ForwardedPrefixHeader)
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expectedRequestURI := test.expectedPath
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if test.expectedRawPath != "" {
// go HTTP uses the raw path when existent in the RequestURI
expectedRequestURI = test.expectedRawPath
}
if test.expectedPath == "" {
expectedRequestURI = "/"
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}
assert.Equal(t, expectedRequestURI, requestURI, "Unexpected request URI.")
})
}
}