Dynamic Configuration Refactoring

old/middlewares/stripPrefix_test.go

@@ -0,0 +1,143 @@
+package middlewares
+
+import (
+	"net/http"
+	"net/http/httptest"
+	"testing"
+
+	"github.com/containous/traefik/testhelpers"
+	"github.com/stretchr/testify/assert"
+)
+
+func TestStripPrefix(t *testing.T) {
+	tests := []struct {
+		desc               string
+		prefixes           []string
+		path               string
+		expectedStatusCode int
+		expectedPath       string
+		expectedRawPath    string
+		expectedHeader     string
+	}{
+		{
+			desc:               "no prefixes configured",
+			prefixes:           []string{},
+			path:               "/noprefixes",
+			expectedStatusCode: http.StatusNotFound,
+		},
+		{
+			desc:               "wildcard (.*) requests",
+			prefixes:           []string{"/"},
+			path:               "/",
+			expectedStatusCode: http.StatusOK,
+			expectedPath:       "/",
+			expectedHeader:     "/",
+		},
+		{
+			desc:               "prefix and path matching",
+			prefixes:           []string{"/stat"},
+			path:               "/stat",
+			expectedStatusCode: http.StatusOK,
+			expectedPath:       "/",
+			expectedHeader:     "/stat",
+		},
+		{
+			desc:               "path prefix on exactly matching path",
+			prefixes:           []string{"/stat/"},
+			path:               "/stat/",
+			expectedStatusCode: http.StatusOK,
+			expectedPath:       "/",
+			expectedHeader:     "/stat/",
+		},
+		{
+			desc:               "path prefix on matching longer path",
+			prefixes:           []string{"/stat/"},
+			path:               "/stat/us",
+			expectedStatusCode: http.StatusOK,
+			expectedPath:       "/us",
+			expectedHeader:     "/stat/",
+		},
+		{
+			desc:               "path prefix on mismatching path",
+			prefixes:           []string{"/stat/"},
+			path:               "/status",
+			expectedStatusCode: http.StatusNotFound,
+		},
+		{
+			desc:               "general prefix on matching path",
+			prefixes:           []string{"/stat"},
+			path:               "/stat/",
+			expectedStatusCode: http.StatusOK,
+			expectedPath:       "/",
+			expectedHeader:     "/stat",
+		},
+		{
+			desc:               "earlier prefix matching",
+			prefixes:           []string{"/stat", "/stat/us"},
+			path:               "/stat/us",
+			expectedStatusCode: http.StatusOK,
+			expectedPath:       "/us",
+			expectedHeader:     "/stat",
+		},
+		{
+			desc:               "later prefix matching",
+			prefixes:           []string{"/mismatch", "/stat"},
+			path:               "/stat",
+			expectedStatusCode: http.StatusOK,
+			expectedPath:       "/",
+			expectedHeader:     "/stat",
+		},
+		{
+			desc:               "prefix matching within slash boundaries",
+			prefixes:           []string{"/stat"},
+			path:               "/status",
+			expectedStatusCode: http.StatusOK,
+			expectedPath:       "/us",
+			expectedHeader:     "/stat",
+		},
+		{
+			desc:               "raw path is also stripped",
+			prefixes:           []string{"/stat"},
+			path:               "/stat/a%2Fb",
+			expectedStatusCode: http.StatusOK,
+			expectedPath:       "/a/b",
+			expectedRawPath:    "/a%2Fb",
+			expectedHeader:     "/stat",
+		},
+	}
+
+	for _, test := range tests {
+		test := test
+		t.Run(test.desc, func(t *testing.T) {
+			t.Parallel()
+
+			var actualPath, actualRawPath, actualHeader, requestURI string
+			handler := &StripPrefix{
+				Prefixes: test.prefixes,
+				Handler: 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
+				}),
+			}
+
+			req := testhelpers.MustNewRequest(http.MethodGet, "http://localhost"+test.path, nil)
+			resp := &httptest.ResponseRecorder{Code: http.StatusOK}
+
+			handler.ServeHTTP(resp, req)
+
+			assert.Equal(t, test.expectedStatusCode, resp.Code, "Unexpected status code.")
+			assert.Equal(t, test.expectedPath, actualPath, "Unexpected path.")
+			assert.Equal(t, test.expectedRawPath, actualRawPath, "Unexpected raw path.")
+			assert.Equal(t, test.expectedHeader, actualHeader, "Unexpected '%s' header.", ForwardedPrefixHeader)
+
+			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, "Unexpected request URI.")
+		})
+	}
+}