traefik/pkg/middlewares/addprefix/add_prefix_test.go

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package addprefix
import (
"context"
"net/http"
"testing"
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"github.com/containous/traefik/v2/pkg/config/dynamic"
"github.com/containous/traefik/v2/pkg/testhelpers"
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"github.com/stretchr/testify/assert"
"github.com/stretchr/testify/require"
)
func TestNewAddPrefix(t *testing.T) {
testCases := []struct {
desc string
prefix dynamic.AddPrefix
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expectsError bool
}{
{
desc: "Works with a non empty prefix",
prefix: dynamic.AddPrefix{Prefix: "/a"},
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},
{
desc: "Fails if prefix is empty",
prefix: dynamic.AddPrefix{Prefix: ""},
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expectsError: true,
},
}
for _, test := range testCases {
test := test
t.Run(test.desc, func(t *testing.T) {
t.Parallel()
next := http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {})
_, err := New(context.Background(), next, test.prefix, "foo-add-prefix")
if test.expectsError {
assert.Error(t, err)
} else {
assert.NoError(t, err)
}
})
}
}
func TestAddPrefix(t *testing.T) {
testCases := []struct {
desc string
prefix dynamic.AddPrefix
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path string
expectedPath string
expectedRawPath string
}{
{
desc: "Works with a regular path",
prefix: dynamic.AddPrefix{Prefix: "/a"},
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path: "/b",
expectedPath: "/a/b",
},
{
desc: "Works with missing leading slash",
prefix: dynamic.AddPrefix{Prefix: "a"},
path: "/",
expectedPath: "/a/",
},
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{
desc: "Works with a raw path",
prefix: dynamic.AddPrefix{Prefix: "/a"},
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path: "/b%2Fc",
expectedPath: "/a/b/c",
expectedRawPath: "/a/b%2Fc",
},
}
for _, test := range testCases {
test := test
t.Run(test.desc, func(t *testing.T) {
t.Parallel()
var actualPath, actualRawPath, requestURI string
next := http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
actualPath = r.URL.Path
actualRawPath = r.URL.RawPath
requestURI = r.RequestURI
})
req := testhelpers.MustNewRequest(http.MethodGet, "http://localhost"+test.path, nil)
handler, err := New(context.Background(), next, test.prefix, "foo-add-prefix")
require.NoError(t, err)
handler.ServeHTTP(nil, req)
assert.Equal(t, test.expectedPath, actualPath)
assert.Equal(t, test.expectedRawPath, actualRawPath)
expectedURI := test.expectedPath
if test.expectedRawPath != "" {
// go HTTP uses the raw path when existent in the RequestURI
expectedURI = test.expectedRawPath
}
assert.Equal(t, expectedURI, requestURI)
})
}
}