diff --git a/license/httprouter-license b/license/httprouter-license
new file mode 100644
index 0000000..3ab5aa6
--- /dev/null
+++ b/license/httprouter-license
@@ -0,0 +1,29 @@
+BSD 3-Clause License
+
+Copyright (c) 2013, Julien Schmidt
+All rights reserved.
+
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions are met:
+
+1. Redistributions of source code must retain the above copyright notice, this
+   list of conditions and the following disclaimer.
+
+2. Redistributions in binary form must reproduce the above copyright notice,
+   this list of conditions and the following disclaimer in the documentation
+   and/or other materials provided with the distribution.
+
+3. Neither the name of the copyright holder nor the names of its
+   contributors may be used to endorse or promote products derived from
+   this software without specific prior written permission.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
+FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
\ No newline at end of file
diff --git a/tree_test.go b/tree_test.go
new file mode 100644
index 0000000..dc0bb60
--- /dev/null
+++ b/tree_test.go
@@ -0,0 +1,1021 @@
+// Copyright 2013 Julien Schmidt. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be found
+// at https://github.com/julienschmidt/httprouter/blob/master/LICENSE
+// This tree_test.go is gin's fork, you can see https://github.com/gin-gonic/gin/blob/master/tree_test.go
+
+package touka
+
+import (
+	"fmt"
+	"reflect"
+	"regexp"
+	"strings"
+	"testing"
+)
+
+// Used as a workaround since we can't compare functions or their addresses
+var fakeHandlerValue string
+
+func fakeHandler(val string) HandlersChain {
+	return HandlersChain{func(c *Context) {
+		fakeHandlerValue = val
+	}}
+}
+
+type testRequests []struct {
+	path       string
+	nilHandler bool
+	route      string
+	ps         Params
+}
+
+func getParams() *Params {
+	ps := make(Params, 0, 20)
+	return &ps
+}
+
+func getSkippedNodes() *[]skippedNode {
+	ps := make([]skippedNode, 0, 20)
+	return &ps
+}
+
+func checkRequests(t *testing.T, tree *node, requests testRequests, unescapes ...bool) {
+	unescape := false
+	if len(unescapes) >= 1 {
+		unescape = unescapes[0]
+	}
+
+	for _, request := range requests {
+		value := tree.getValue(request.path, getParams(), getSkippedNodes(), unescape)
+
+		if value.handlers == nil {
+			if !request.nilHandler {
+				t.Errorf("handle mismatch for route '%s': Expected non-nil handle", request.path)
+			}
+		} else if request.nilHandler {
+			t.Errorf("handle mismatch for route '%s': Expected nil handle", request.path)
+		} else {
+			value.handlers[0](nil)
+			if fakeHandlerValue != request.route {
+				t.Errorf("handle mismatch for route '%s': Wrong handle (%s != %s)", request.path, fakeHandlerValue, request.route)
+			}
+		}
+
+		if value.params != nil {
+			if !reflect.DeepEqual(*value.params, request.ps) {
+				t.Errorf("Params mismatch for route '%s'", request.path)
+			}
+		}
+
+	}
+}
+
+func checkPriorities(t *testing.T, n *node) uint32 {
+	var prio uint32
+	for i := range n.children {
+		prio += checkPriorities(t, n.children[i])
+	}
+
+	if n.handlers != nil {
+		prio++
+	}
+
+	if n.priority != prio {
+		t.Errorf(
+			"priority mismatch for node '%s': is %d, should be %d",
+			n.path, n.priority, prio,
+		)
+	}
+
+	return prio
+}
+
+func TestCountParams(t *testing.T) {
+	if countParams("/path/:param1/static/*catch-all") != 2 {
+		t.Fail()
+	}
+	if countParams(strings.Repeat("/:param", 256)) != 256 {
+		t.Fail()
+	}
+}
+
+func TestTreeAddAndGet(t *testing.T) {
+	tree := &node{}
+
+	routes := [...]string{
+		"/hi",
+		"/contact",
+		"/co",
+		"/c",
+		"/a",
+		"/ab",
+		"/doc/",
+		"/doc/go_faq.html",
+		"/doc/go1.html",
+		"/α",
+		"/β",
+	}
+	for _, route := range routes {
+		tree.addRoute(route, fakeHandler(route))
+	}
+
+	checkRequests(t, tree, testRequests{
+		{"/a", false, "/a", nil},
+		{"/", true, "", nil},
+		{"/hi", false, "/hi", nil},
+		{"/contact", false, "/contact", nil},
+		{"/co", false, "/co", nil},
+		{"/con", true, "", nil},  // key mismatch
+		{"/cona", true, "", nil}, // key mismatch
+		{"/no", true, "", nil},   // no matching child
+		{"/ab", false, "/ab", nil},
+		{"/α", false, "/α", nil},
+		{"/β", false, "/β", nil},
+	})
+
+	checkPriorities(t, tree)
+}
+
+func TestTreeWildcard(t *testing.T) {
+	tree := &node{}
+
+	routes := [...]string{
+		"/",
+		"/cmd/:tool/",
+		"/cmd/:tool/:sub",
+		"/cmd/whoami",
+		"/cmd/whoami/root",
+		"/cmd/whoami/root/",
+		"/src/*filepath",
+		"/search/",
+		"/search/:query",
+		"/search/gin-gonic",
+		"/search/google",
+		"/user_:name",
+		"/user_:name/about",
+		"/files/:dir/*filepath",
+		"/doc/",
+		"/doc/go_faq.html",
+		"/doc/go1.html",
+		"/info/:user/public",
+		"/info/:user/project/:project",
+		"/info/:user/project/golang",
+		"/aa/*xx",
+		"/ab/*xx",
+		"/:cc",
+		"/c1/:dd/e",
+		"/c1/:dd/e1",
+		"/:cc/cc",
+		"/:cc/:dd/ee",
+		"/:cc/:dd/:ee/ff",
+		"/:cc/:dd/:ee/:ff/gg",
+		"/:cc/:dd/:ee/:ff/:gg/hh",
+		"/get/test/abc/",
+		"/get/:param/abc/",
+		"/something/:paramname/thirdthing",
+		"/something/secondthing/test",
+		"/get/abc",
+		"/get/:param",
+		"/get/abc/123abc",
+		"/get/abc/:param",
+		"/get/abc/123abc/xxx8",
+		"/get/abc/123abc/:param",
+		"/get/abc/123abc/xxx8/1234",
+		"/get/abc/123abc/xxx8/:param",
+		"/get/abc/123abc/xxx8/1234/ffas",
+		"/get/abc/123abc/xxx8/1234/:param",
+		"/get/abc/123abc/xxx8/1234/kkdd/12c",
+		"/get/abc/123abc/xxx8/1234/kkdd/:param",
+		"/get/abc/:param/test",
+		"/get/abc/123abd/:param",
+		"/get/abc/123abddd/:param",
+		"/get/abc/123/:param",
+		"/get/abc/123abg/:param",
+		"/get/abc/123abf/:param",
+		"/get/abc/123abfff/:param",
+		"/get/abc/escaped_colon/test\\:param",
+	}
+	for _, route := range routes {
+		tree.addRoute(route, fakeHandler(route))
+	}
+
+	checkRequests(t, tree, testRequests{
+		{"/", false, "/", nil},
+		{"/cmd/test", true, "/cmd/:tool/", Params{Param{"tool", "test"}}},
+		{"/cmd/test/", false, "/cmd/:tool/", Params{Param{"tool", "test"}}},
+		{"/cmd/test/3", false, "/cmd/:tool/:sub", Params{Param{Key: "tool", Value: "test"}, Param{Key: "sub", Value: "3"}}},
+		{"/cmd/who", true, "/cmd/:tool/", Params{Param{"tool", "who"}}},
+		{"/cmd/who/", false, "/cmd/:tool/", Params{Param{"tool", "who"}}},
+		{"/cmd/whoami", false, "/cmd/whoami", nil},
+		{"/cmd/whoami/", true, "/cmd/whoami", nil},
+		{"/cmd/whoami/r", false, "/cmd/:tool/:sub", Params{Param{Key: "tool", Value: "whoami"}, Param{Key: "sub", Value: "r"}}},
+		{"/cmd/whoami/r/", true, "/cmd/:tool/:sub", Params{Param{Key: "tool", Value: "whoami"}, Param{Key: "sub", Value: "r"}}},
+		{"/cmd/whoami/root", false, "/cmd/whoami/root", nil},
+		{"/cmd/whoami/root/", false, "/cmd/whoami/root/", nil},
+		{"/src/", false, "/src/*filepath", Params{Param{Key: "filepath", Value: "/"}}},
+		{"/src/some/file.png", false, "/src/*filepath", Params{Param{Key: "filepath", Value: "/some/file.png"}}},
+		{"/search/", false, "/search/", nil},
+		{"/search/someth!ng+in+ünìcodé", false, "/search/:query", Params{Param{Key: "query", Value: "someth!ng+in+ünìcodé"}}},
+		{"/search/someth!ng+in+ünìcodé/", true, "", Params{Param{Key: "query", Value: "someth!ng+in+ünìcodé"}}},
+		{"/search/gin", false, "/search/:query", Params{Param{"query", "gin"}}},
+		{"/search/gin-gonic", false, "/search/gin-gonic", nil},
+		{"/search/google", false, "/search/google", nil},
+		{"/user_gopher", false, "/user_:name", Params{Param{Key: "name", Value: "gopher"}}},
+		{"/user_gopher/about", false, "/user_:name/about", Params{Param{Key: "name", Value: "gopher"}}},
+		{"/files/js/inc/framework.js", false, "/files/:dir/*filepath", Params{Param{Key: "dir", Value: "js"}, Param{Key: "filepath", Value: "/inc/framework.js"}}},
+		{"/info/gordon/public", false, "/info/:user/public", Params{Param{Key: "user", Value: "gordon"}}},
+		{"/info/gordon/project/go", false, "/info/:user/project/:project", Params{Param{Key: "user", Value: "gordon"}, Param{Key: "project", Value: "go"}}},
+		{"/info/gordon/project/golang", false, "/info/:user/project/golang", Params{Param{Key: "user", Value: "gordon"}}},
+		{"/aa/aa", false, "/aa/*xx", Params{Param{Key: "xx", Value: "/aa"}}},
+		{"/ab/ab", false, "/ab/*xx", Params{Param{Key: "xx", Value: "/ab"}}},
+		{"/a", false, "/:cc", Params{Param{Key: "cc", Value: "a"}}},
+		// * Error with argument being intercepted
+		// new PR handle (/all /all/cc /a/cc)
+		// fix PR: https://github.com/gin-gonic/gin/pull/2796
+		{"/all", false, "/:cc", Params{Param{Key: "cc", Value: "all"}}},
+		{"/d", false, "/:cc", Params{Param{Key: "cc", Value: "d"}}},
+		{"/ad", false, "/:cc", Params{Param{Key: "cc", Value: "ad"}}},
+		{"/dd", false, "/:cc", Params{Param{Key: "cc", Value: "dd"}}},
+		{"/dddaa", false, "/:cc", Params{Param{Key: "cc", Value: "dddaa"}}},
+		{"/aa", false, "/:cc", Params{Param{Key: "cc", Value: "aa"}}},
+		{"/aaa", false, "/:cc", Params{Param{Key: "cc", Value: "aaa"}}},
+		{"/aaa/cc", false, "/:cc/cc", Params{Param{Key: "cc", Value: "aaa"}}},
+		{"/ab", false, "/:cc", Params{Param{Key: "cc", Value: "ab"}}},
+		{"/abb", false, "/:cc", Params{Param{Key: "cc", Value: "abb"}}},
+		{"/abb/cc", false, "/:cc/cc", Params{Param{Key: "cc", Value: "abb"}}},
+		{"/allxxxx", false, "/:cc", Params{Param{Key: "cc", Value: "allxxxx"}}},
+		{"/alldd", false, "/:cc", Params{Param{Key: "cc", Value: "alldd"}}},
+		{"/all/cc", false, "/:cc/cc", Params{Param{Key: "cc", Value: "all"}}},
+		{"/a/cc", false, "/:cc/cc", Params{Param{Key: "cc", Value: "a"}}},
+		{"/c1/d/e", false, "/c1/:dd/e", Params{Param{Key: "dd", Value: "d"}}},
+		{"/c1/d/e1", false, "/c1/:dd/e1", Params{Param{Key: "dd", Value: "d"}}},
+		{"/c1/d/ee", false, "/:cc/:dd/ee", Params{Param{Key: "cc", Value: "c1"}, Param{Key: "dd", Value: "d"}}},
+		{"/cc/cc", false, "/:cc/cc", Params{Param{Key: "cc", Value: "cc"}}},
+		{"/ccc/cc", false, "/:cc/cc", Params{Param{Key: "cc", Value: "ccc"}}},
+		{"/deedwjfs/cc", false, "/:cc/cc", Params{Param{Key: "cc", Value: "deedwjfs"}}},
+		{"/acllcc/cc", false, "/:cc/cc", Params{Param{Key: "cc", Value: "acllcc"}}},
+		{"/get/test/abc/", false, "/get/test/abc/", nil},
+		{"/get/te/abc/", false, "/get/:param/abc/", Params{Param{Key: "param", Value: "te"}}},
+		{"/get/testaa/abc/", false, "/get/:param/abc/", Params{Param{Key: "param", Value: "testaa"}}},
+		{"/get/xx/abc/", false, "/get/:param/abc/", Params{Param{Key: "param", Value: "xx"}}},
+		{"/get/tt/abc/", false, "/get/:param/abc/", Params{Param{Key: "param", Value: "tt"}}},
+		{"/get/a/abc/", false, "/get/:param/abc/", Params{Param{Key: "param", Value: "a"}}},
+		{"/get/t/abc/", false, "/get/:param/abc/", Params{Param{Key: "param", Value: "t"}}},
+		{"/get/aa/abc/", false, "/get/:param/abc/", Params{Param{Key: "param", Value: "aa"}}},
+		{"/get/abas/abc/", false, "/get/:param/abc/", Params{Param{Key: "param", Value: "abas"}}},
+		{"/something/secondthing/test", false, "/something/secondthing/test", nil},
+		{"/something/abcdad/thirdthing", false, "/something/:paramname/thirdthing", Params{Param{Key: "paramname", Value: "abcdad"}}},
+		{"/something/secondthingaaaa/thirdthing", false, "/something/:paramname/thirdthing", Params{Param{Key: "paramname", Value: "secondthingaaaa"}}},
+		{"/something/se/thirdthing", false, "/something/:paramname/thirdthing", Params{Param{Key: "paramname", Value: "se"}}},
+		{"/something/s/thirdthing", false, "/something/:paramname/thirdthing", Params{Param{Key: "paramname", Value: "s"}}},
+		{"/c/d/ee", false, "/:cc/:dd/ee", Params{Param{Key: "cc", Value: "c"}, Param{Key: "dd", Value: "d"}}},
+		{"/c/d/e/ff", false, "/:cc/:dd/:ee/ff", Params{Param{Key: "cc", Value: "c"}, Param{Key: "dd", Value: "d"}, Param{Key: "ee", Value: "e"}}},
+		{"/c/d/e/f/gg", false, "/:cc/:dd/:ee/:ff/gg", Params{Param{Key: "cc", Value: "c"}, Param{Key: "dd", Value: "d"}, Param{Key: "ee", Value: "e"}, Param{Key: "ff", Value: "f"}}},
+		{"/c/d/e/f/g/hh", false, "/:cc/:dd/:ee/:ff/:gg/hh", Params{Param{Key: "cc", Value: "c"}, Param{Key: "dd", Value: "d"}, Param{Key: "ee", Value: "e"}, Param{Key: "ff", Value: "f"}, Param{Key: "gg", Value: "g"}}},
+		{"/cc/dd/ee/ff/gg/hh", false, "/:cc/:dd/:ee/:ff/:gg/hh", Params{Param{Key: "cc", Value: "cc"}, Param{Key: "dd", Value: "dd"}, Param{Key: "ee", Value: "ee"}, Param{Key: "ff", Value: "ff"}, Param{Key: "gg", Value: "gg"}}},
+		{"/get/abc", false, "/get/abc", nil},
+		{"/get/a", false, "/get/:param", Params{Param{Key: "param", Value: "a"}}},
+		{"/get/abz", false, "/get/:param", Params{Param{Key: "param", Value: "abz"}}},
+		{"/get/12a", false, "/get/:param", Params{Param{Key: "param", Value: "12a"}}},
+		{"/get/abcd", false, "/get/:param", Params{Param{Key: "param", Value: "abcd"}}},
+		{"/get/abc/123abc", false, "/get/abc/123abc", nil},
+		{"/get/abc/12", false, "/get/abc/:param", Params{Param{Key: "param", Value: "12"}}},
+		{"/get/abc/123ab", false, "/get/abc/:param", Params{Param{Key: "param", Value: "123ab"}}},
+		{"/get/abc/xyz", false, "/get/abc/:param", Params{Param{Key: "param", Value: "xyz"}}},
+		{"/get/abc/123abcddxx", false, "/get/abc/:param", Params{Param{Key: "param", Value: "123abcddxx"}}},
+		{"/get/abc/123abc/xxx8", false, "/get/abc/123abc/xxx8", nil},
+		{"/get/abc/123abc/x", false, "/get/abc/123abc/:param", Params{Param{Key: "param", Value: "x"}}},
+		{"/get/abc/123abc/xxx", false, "/get/abc/123abc/:param", Params{Param{Key: "param", Value: "xxx"}}},
+		{"/get/abc/123abc/abc", false, "/get/abc/123abc/:param", Params{Param{Key: "param", Value: "abc"}}},
+		{"/get/abc/123abc/xxx8xxas", false, "/get/abc/123abc/:param", Params{Param{Key: "param", Value: "xxx8xxas"}}},
+		{"/get/abc/123abc/xxx8/1234", false, "/get/abc/123abc/xxx8/1234", nil},
+		{"/get/abc/123abc/xxx8/1", false, "/get/abc/123abc/xxx8/:param", Params{Param{Key: "param", Value: "1"}}},
+		{"/get/abc/123abc/xxx8/123", false, "/get/abc/123abc/xxx8/:param", Params{Param{Key: "param", Value: "123"}}},
+		{"/get/abc/123abc/xxx8/78k", false, "/get/abc/123abc/xxx8/:param", Params{Param{Key: "param", Value: "78k"}}},
+		{"/get/abc/123abc/xxx8/1234xxxd", false, "/get/abc/123abc/xxx8/:param", Params{Param{Key: "param", Value: "1234xxxd"}}},
+		{"/get/abc/123abc/xxx8/1234/ffas", false, "/get/abc/123abc/xxx8/1234/ffas", nil},
+		{"/get/abc/123abc/xxx8/1234/f", false, "/get/abc/123abc/xxx8/1234/:param", Params{Param{Key: "param", Value: "f"}}},
+		{"/get/abc/123abc/xxx8/1234/ffa", false, "/get/abc/123abc/xxx8/1234/:param", Params{Param{Key: "param", Value: "ffa"}}},
+		{"/get/abc/123abc/xxx8/1234/kka", false, "/get/abc/123abc/xxx8/1234/:param", Params{Param{Key: "param", Value: "kka"}}},
+		{"/get/abc/123abc/xxx8/1234/ffas321", false, "/get/abc/123abc/xxx8/1234/:param", Params{Param{Key: "param", Value: "ffas321"}}},
+		{"/get/abc/123abc/xxx8/1234/kkdd/12c", false, "/get/abc/123abc/xxx8/1234/kkdd/12c", nil},
+		{"/get/abc/123abc/xxx8/1234/kkdd/1", false, "/get/abc/123abc/xxx8/1234/kkdd/:param", Params{Param{Key: "param", Value: "1"}}},
+		{"/get/abc/123abc/xxx8/1234/kkdd/12", false, "/get/abc/123abc/xxx8/1234/kkdd/:param", Params{Param{Key: "param", Value: "12"}}},
+		{"/get/abc/123abc/xxx8/1234/kkdd/12b", false, "/get/abc/123abc/xxx8/1234/kkdd/:param", Params{Param{Key: "param", Value: "12b"}}},
+		{"/get/abc/123abc/xxx8/1234/kkdd/34", false, "/get/abc/123abc/xxx8/1234/kkdd/:param", Params{Param{Key: "param", Value: "34"}}},
+		{"/get/abc/123abc/xxx8/1234/kkdd/12c2e3", false, "/get/abc/123abc/xxx8/1234/kkdd/:param", Params{Param{Key: "param", Value: "12c2e3"}}},
+		{"/get/abc/12/test", false, "/get/abc/:param/test", Params{Param{Key: "param", Value: "12"}}},
+		{"/get/abc/123abdd/test", false, "/get/abc/:param/test", Params{Param{Key: "param", Value: "123abdd"}}},
+		{"/get/abc/123abdddf/test", false, "/get/abc/:param/test", Params{Param{Key: "param", Value: "123abdddf"}}},
+		{"/get/abc/123ab/test", false, "/get/abc/:param/test", Params{Param{Key: "param", Value: "123ab"}}},
+		{"/get/abc/123abgg/test", false, "/get/abc/:param/test", Params{Param{Key: "param", Value: "123abgg"}}},
+		{"/get/abc/123abff/test", false, "/get/abc/:param/test", Params{Param{Key: "param", Value: "123abff"}}},
+		{"/get/abc/123abffff/test", false, "/get/abc/:param/test", Params{Param{Key: "param", Value: "123abffff"}}},
+		{"/get/abc/123abd/test", false, "/get/abc/123abd/:param", Params{Param{Key: "param", Value: "test"}}},
+		{"/get/abc/123abddd/test", false, "/get/abc/123abddd/:param", Params{Param{Key: "param", Value: "test"}}},
+		{"/get/abc/123/test22", false, "/get/abc/123/:param", Params{Param{Key: "param", Value: "test22"}}},
+		{"/get/abc/123abg/test", false, "/get/abc/123abg/:param", Params{Param{Key: "param", Value: "test"}}},
+		{"/get/abc/123abf/testss", false, "/get/abc/123abf/:param", Params{Param{Key: "param", Value: "testss"}}},
+		{"/get/abc/123abfff/te", false, "/get/abc/123abfff/:param", Params{Param{Key: "param", Value: "te"}}},
+		{"/get/abc/escaped_colon/test\\:param", false, "/get/abc/escaped_colon/test\\:param", nil},
+	})
+
+	checkPriorities(t, tree)
+}
+
+func TestUnescapeParameters(t *testing.T) {
+	tree := &node{}
+
+	routes := [...]string{
+		"/",
+		"/cmd/:tool/:sub",
+		"/cmd/:tool/",
+		"/src/*filepath",
+		"/search/:query",
+		"/files/:dir/*filepath",
+		"/info/:user/project/:project",
+		"/info/:user",
+	}
+	for _, route := range routes {
+		tree.addRoute(route, fakeHandler(route))
+	}
+
+	unescape := true
+	checkRequests(t, tree, testRequests{
+		{"/", false, "/", nil},
+		{"/cmd/test/", false, "/cmd/:tool/", Params{Param{Key: "tool", Value: "test"}}},
+		{"/cmd/test", true, "", Params{Param{Key: "tool", Value: "test"}}},
+		{"/src/some/file.png", false, "/src/*filepath", Params{Param{Key: "filepath", Value: "/some/file.png"}}},
+		{"/src/some/file+test.png", false, "/src/*filepath", Params{Param{Key: "filepath", Value: "/some/file test.png"}}},
+		{"/src/some/file++++%%%%test.png", false, "/src/*filepath", Params{Param{Key: "filepath", Value: "/some/file++++%%%%test.png"}}},
+		{"/src/some/file%2Ftest.png", false, "/src/*filepath", Params{Param{Key: "filepath", Value: "/some/file/test.png"}}},
+		{"/search/someth!ng+in+ünìcodé", false, "/search/:query", Params{Param{Key: "query", Value: "someth!ng in ünìcodé"}}},
+		{"/info/gordon/project/go", false, "/info/:user/project/:project", Params{Param{Key: "user", Value: "gordon"}, Param{Key: "project", Value: "go"}}},
+		{"/info/slash%2Fgordon", false, "/info/:user", Params{Param{Key: "user", Value: "slash/gordon"}}},
+		{"/info/slash%2Fgordon/project/Project%20%231", false, "/info/:user/project/:project", Params{Param{Key: "user", Value: "slash/gordon"}, Param{Key: "project", Value: "Project #1"}}},
+		{"/info/slash%%%%", false, "/info/:user", Params{Param{Key: "user", Value: "slash%%%%"}}},
+		{"/info/slash%%%%2Fgordon/project/Project%%%%20%231", false, "/info/:user/project/:project", Params{Param{Key: "user", Value: "slash%%%%2Fgordon"}, Param{Key: "project", Value: "Project%%%%20%231"}}},
+	}, unescape)
+
+	checkPriorities(t, tree)
+}
+
+func catchPanic(testFunc func()) (recv any) {
+	defer func() {
+		recv = recover()
+	}()
+
+	testFunc()
+	return
+}
+
+type testRoute struct {
+	path     string
+	conflict bool
+}
+
+func testRoutes(t *testing.T, routes []testRoute) {
+	tree := &node{}
+
+	for _, route := range routes {
+		recv := catchPanic(func() {
+			tree.addRoute(route.path, nil)
+		})
+
+		if route.conflict {
+			if recv == nil {
+				t.Errorf("no panic for conflicting route '%s'", route.path)
+			}
+		} else if recv != nil {
+			t.Errorf("unexpected panic for route '%s': %v", route.path, recv)
+		}
+	}
+}
+
+func TestTreeWildcardConflict(t *testing.T) {
+	routes := []testRoute{
+		{"/cmd/:tool/:sub", false},
+		{"/cmd/vet", false},
+		{"/foo/bar", false},
+		{"/foo/:name", false},
+		{"/foo/:names", true},
+		{"/cmd/*path", true},
+		{"/cmd/:badvar", true},
+		{"/cmd/:tool/names", false},
+		{"/cmd/:tool/:badsub/details", true},
+		{"/src/*filepath", false},
+		{"/src/:file", true},
+		{"/src/static.json", true},
+		{"/src/*filepathx", true},
+		{"/src/", true},
+		{"/src/foo/bar", true},
+		{"/src1/", false},
+		{"/src1/*filepath", true},
+		{"/src2*filepath", true},
+		{"/src2/*filepath", false},
+		{"/search/:query", false},
+		{"/search/valid", false},
+		{"/user_:name", false},
+		{"/user_x", false},
+		{"/user_:name", false},
+		{"/id:id", false},
+		{"/id/:id", false},
+		{"/static/*file", false},
+		{"/static/", true},
+		{"/escape/test\\:d1", false},
+		{"/escape/test\\:d2", false},
+		{"/escape/test:param", false},
+	}
+	testRoutes(t, routes)
+}
+
+func TestCatchAllAfterSlash(t *testing.T) {
+	routes := []testRoute{
+		{"/non-leading-*catchall", true},
+	}
+	testRoutes(t, routes)
+}
+
+func TestTreeChildConflict(t *testing.T) {
+	routes := []testRoute{
+		{"/cmd/vet", false},
+		{"/cmd/:tool", false},
+		{"/cmd/:tool/:sub", false},
+		{"/cmd/:tool/misc", false},
+		{"/cmd/:tool/:othersub", true},
+		{"/src/AUTHORS", false},
+		{"/src/*filepath", true},
+		{"/user_x", false},
+		{"/user_:name", false},
+		{"/id/:id", false},
+		{"/id:id", false},
+		{"/:id", false},
+		{"/*filepath", true},
+	}
+	testRoutes(t, routes)
+}
+
+func TestTreeDuplicatePath(t *testing.T) {
+	tree := &node{}
+
+	routes := [...]string{
+		"/",
+		"/doc/",
+		"/src/*filepath",
+		"/search/:query",
+		"/user_:name",
+	}
+	for _, route := range routes {
+		recv := catchPanic(func() {
+			tree.addRoute(route, fakeHandler(route))
+		})
+		if recv != nil {
+			t.Fatalf("panic inserting route '%s': %v", route, recv)
+		}
+
+		// Add again
+		recv = catchPanic(func() {
+			tree.addRoute(route, nil)
+		})
+		if recv == nil {
+			t.Fatalf("no panic while inserting duplicate route '%s", route)
+		}
+	}
+
+	// printChildren(tree, "")
+
+	checkRequests(t, tree, testRequests{
+		{"/", false, "/", nil},
+		{"/doc/", false, "/doc/", nil},
+		{"/src/some/file.png", false, "/src/*filepath", Params{Param{"filepath", "/some/file.png"}}},
+		{"/search/someth!ng+in+ünìcodé", false, "/search/:query", Params{Param{"query", "someth!ng+in+ünìcodé"}}},
+		{"/user_gopher", false, "/user_:name", Params{Param{"name", "gopher"}}},
+	})
+}
+
+func TestEmptyWildcardName(t *testing.T) {
+	tree := &node{}
+
+	routes := [...]string{
+		"/user:",
+		"/user:/",
+		"/cmd/:/",
+		"/src/*",
+	}
+	for _, route := range routes {
+		recv := catchPanic(func() {
+			tree.addRoute(route, nil)
+		})
+		if recv == nil {
+			t.Fatalf("no panic while inserting route with empty wildcard name '%s", route)
+		}
+	}
+}
+
+func TestTreeCatchAllConflict(t *testing.T) {
+	routes := []testRoute{
+		{"/src/*filepath/x", true},
+		{"/src2/", false},
+		{"/src2/*filepath/x", true},
+		{"/src3/*filepath", false},
+		{"/src3/*filepath/x", true},
+	}
+	testRoutes(t, routes)
+}
+
+func TestTreeCatchAllConflictRoot(t *testing.T) {
+	routes := []testRoute{
+		{"/", false},
+		{"/*filepath", true},
+	}
+	testRoutes(t, routes)
+}
+
+func TestTreeCatchMaxParams(t *testing.T) {
+	tree := &node{}
+	route := "/cmd/*filepath"
+	tree.addRoute(route, fakeHandler(route))
+}
+
+func TestTreeDoubleWildcard(t *testing.T) {
+	const panicMsg = "only one wildcard per path segment is allowed"
+
+	routes := [...]string{
+		"/:foo:bar",
+		"/:foo:bar/",
+		"/:foo*bar",
+	}
+
+	for _, route := range routes {
+		tree := &node{}
+		recv := catchPanic(func() {
+			tree.addRoute(route, nil)
+		})
+
+		if rs, ok := recv.(string); !ok || !strings.HasPrefix(rs, panicMsg) {
+			t.Fatalf(`"Expected panic "%s" for route '%s', got "%v"`, panicMsg, route, recv)
+		}
+	}
+}
+
+/*func TestTreeDuplicateWildcard(t *testing.T) {
+	tree := &node{}
+	routes := [...]string{
+		"/:id/:name/:id",
+	}
+	for _, route := range routes {
+		...
+	}
+}*/
+
+func TestTreeTrailingSlashRedirect(t *testing.T) {
+	tree := &node{}
+
+	routes := [...]string{
+		"/hi",
+		"/b/",
+		"/search/:query",
+		"/cmd/:tool/",
+		"/src/*filepath",
+		"/x",
+		"/x/y",
+		"/y/",
+		"/y/z",
+		"/0/:id",
+		"/0/:id/1",
+		"/1/:id/",
+		"/1/:id/2",
+		"/aa",
+		"/a/",
+		"/admin",
+		"/admin/:category",
+		"/admin/:category/:page",
+		"/doc",
+		"/doc/go_faq.html",
+		"/doc/go1.html",
+		"/no/a",
+		"/no/b",
+		"/api/:page/:name",
+		"/api/hello/:name/bar/",
+		"/api/bar/:name",
+		"/api/baz/foo",
+		"/api/baz/foo/bar",
+		"/blog/:p",
+		"/posts/:b/:c",
+		"/posts/b/:c/d/",
+		"/vendor/:x/*y",
+	}
+	for _, route := range routes {
+		recv := catchPanic(func() {
+			tree.addRoute(route, fakeHandler(route))
+		})
+		if recv != nil {
+			t.Fatalf("panic inserting route '%s': %v", route, recv)
+		}
+	}
+
+	tsrRoutes := [...]string{
+		"/hi/",
+		"/b",
+		"/search/gopher/",
+		"/cmd/vet",
+		"/src",
+		"/x/",
+		"/y",
+		"/0/go/",
+		"/1/go",
+		"/a",
+		"/admin/",
+		"/admin/config/",
+		"/admin/config/permissions/",
+		"/doc/",
+		"/admin/static/",
+		"/admin/cfg/",
+		"/admin/cfg/users/",
+		"/api/hello/x/bar",
+		"/api/baz/foo/",
+		"/api/baz/bax/",
+		"/api/bar/huh/",
+		"/api/baz/foo/bar/",
+		"/api/world/abc/",
+		"/blog/pp/",
+		"/posts/b/c/d",
+		"/vendor/x",
+	}
+
+	for _, route := range tsrRoutes {
+		value := tree.getValue(route, nil, getSkippedNodes(), false)
+		if value.handlers != nil {
+			t.Fatalf("non-nil handler for TSR route '%s", route)
+		} else if !value.tsr {
+			t.Errorf("expected TSR recommendation for route '%s'", route)
+		}
+	}
+
+	noTsrRoutes := [...]string{
+		"/",
+		"/no",
+		"/no/",
+		"/_",
+		"/_/",
+		"/api",
+		"/api/",
+		"/api/hello/x/foo",
+		"/api/baz/foo/bad",
+		"/foo/p/p",
+	}
+	for _, route := range noTsrRoutes {
+		value := tree.getValue(route, nil, getSkippedNodes(), false)
+		if value.handlers != nil {
+			t.Fatalf("non-nil handler for No-TSR route '%s", route)
+		} else if value.tsr {
+			t.Errorf("expected no TSR recommendation for route '%s'", route)
+		}
+	}
+}
+
+func TestTreeRootTrailingSlashRedirect(t *testing.T) {
+	tree := &node{}
+
+	recv := catchPanic(func() {
+		tree.addRoute("/:test", fakeHandler("/:test"))
+	})
+	if recv != nil {
+		t.Fatalf("panic inserting test route: %v", recv)
+	}
+
+	value := tree.getValue("/", nil, getSkippedNodes(), false)
+	if value.handlers != nil {
+		t.Fatalf("non-nil handler")
+	} else if value.tsr {
+		t.Errorf("expected no TSR recommendation")
+	}
+}
+
+func TestRedirectTrailingSlash(t *testing.T) {
+	data := []struct {
+		path string
+	}{
+		{"/hello/:name"},
+		{"/hello/:name/123"},
+		{"/hello/:name/234"},
+	}
+
+	node := &node{}
+	for _, item := range data {
+		node.addRoute(item.path, fakeHandler("test"))
+	}
+
+	value := node.getValue("/hello/abx/", nil, getSkippedNodes(), false)
+	if value.tsr != true {
+		t.Fatalf("want true, is false")
+	}
+}
+
+func TestTreeFindCaseInsensitivePath(t *testing.T) {
+	tree := &node{}
+
+	longPath := "/l" + strings.Repeat("o", 128) + "ng"
+	lOngPath := "/l" + strings.Repeat("O", 128) + "ng/"
+
+	routes := [...]string{
+		"/hi",
+		"/b/",
+		"/ABC/",
+		"/search/:query",
+		"/cmd/:tool/",
+		"/src/*filepath",
+		"/x",
+		"/x/y",
+		"/y/",
+		"/y/z",
+		"/0/:id",
+		"/0/:id/1",
+		"/1/:id/",
+		"/1/:id/2",
+		"/aa",
+		"/a/",
+		"/doc",
+		"/doc/go_faq.html",
+		"/doc/go1.html",
+		"/doc/go/away",
+		"/no/a",
+		"/no/b",
+		"/Π",
+		"/u/apfêl/",
+		"/u/äpfêl/",
+		"/u/öpfêl",
+		"/v/Äpfêl/",
+		"/v/Öpfêl",
+		"/w/♬",  // 3 byte
+		"/w/♭/", // 3 byte, last byte differs
+		"/w/𠜎",  // 4 byte
+		"/w/𠜏/", // 4 byte
+		longPath,
+	}
+
+	for _, route := range routes {
+		recv := catchPanic(func() {
+			tree.addRoute(route, fakeHandler(route))
+		})
+		if recv != nil {
+			t.Fatalf("panic inserting route '%s': %v", route, recv)
+		}
+	}
+
+	// Check out == in for all registered routes
+	// With fixTrailingSlash = true
+	for _, route := range routes {
+		out, found := tree.findCaseInsensitivePath(route, true)
+		if !found {
+			t.Errorf("Route '%s' not found!", route)
+		} else if string(out) != route {
+			t.Errorf("Wrong result for route '%s': %s", route, string(out))
+		}
+	}
+	// With fixTrailingSlash = false
+	for _, route := range routes {
+		out, found := tree.findCaseInsensitivePath(route, false)
+		if !found {
+			t.Errorf("Route '%s' not found!", route)
+		} else if string(out) != route {
+			t.Errorf("Wrong result for route '%s': %s", route, string(out))
+		}
+	}
+
+	tests := []struct {
+		in    string
+		out   string
+		found bool
+		slash bool
+	}{
+		{"/HI", "/hi", true, false},
+		{"/HI/", "/hi", true, true},
+		{"/B", "/b/", true, true},
+		{"/B/", "/b/", true, false},
+		{"/abc", "/ABC/", true, true},
+		{"/abc/", "/ABC/", true, false},
+		{"/aBc", "/ABC/", true, true},
+		{"/aBc/", "/ABC/", true, false},
+		{"/abC", "/ABC/", true, true},
+		{"/abC/", "/ABC/", true, false},
+		{"/SEARCH/QUERY", "/search/QUERY", true, false},
+		{"/SEARCH/QUERY/", "/search/QUERY", true, true},
+		{"/CMD/TOOL/", "/cmd/TOOL/", true, false},
+		{"/CMD/TOOL", "/cmd/TOOL/", true, true},
+		{"/SRC/FILE/PATH", "/src/FILE/PATH", true, false},
+		{"/x/Y", "/x/y", true, false},
+		{"/x/Y/", "/x/y", true, true},
+		{"/X/y", "/x/y", true, false},
+		{"/X/y/", "/x/y", true, true},
+		{"/X/Y", "/x/y", true, false},
+		{"/X/Y/", "/x/y", true, true},
+		{"/Y/", "/y/", true, false},
+		{"/Y", "/y/", true, true},
+		{"/Y/z", "/y/z", true, false},
+		{"/Y/z/", "/y/z", true, true},
+		{"/Y/Z", "/y/z", true, false},
+		{"/Y/Z/", "/y/z", true, true},
+		{"/y/Z", "/y/z", true, false},
+		{"/y/Z/", "/y/z", true, true},
+		{"/Aa", "/aa", true, false},
+		{"/Aa/", "/aa", true, true},
+		{"/AA", "/aa", true, false},
+		{"/AA/", "/aa", true, true},
+		{"/aA", "/aa", true, false},
+		{"/aA/", "/aa", true, true},
+		{"/A/", "/a/", true, false},
+		{"/A", "/a/", true, true},
+		{"/DOC", "/doc", true, false},
+		{"/DOC/", "/doc", true, true},
+		{"/NO", "", false, true},
+		{"/DOC/GO", "", false, true},
+		{"/π", "/Π", true, false},
+		{"/π/", "/Π", true, true},
+		{"/u/ÄPFÊL/", "/u/äpfêl/", true, false},
+		{"/u/ÄPFÊL", "/u/äpfêl/", true, true},
+		{"/u/ÖPFÊL/", "/u/öpfêl", true, true},
+		{"/u/ÖPFÊL", "/u/öpfêl", true, false},
+		{"/v/äpfêL/", "/v/Äpfêl/", true, false},
+		{"/v/äpfêL", "/v/Äpfêl/", true, true},
+		{"/v/öpfêL/", "/v/Öpfêl", true, true},
+		{"/v/öpfêL", "/v/Öpfêl", true, false},
+		{"/w/♬/", "/w/♬", true, true},
+		{"/w/♭", "/w/♭/", true, true},
+		{"/w/𠜎/", "/w/𠜎", true, true},
+		{"/w/𠜏", "/w/𠜏/", true, true},
+		{lOngPath, longPath, true, true},
+	}
+	// With fixTrailingSlash = true
+	for _, test := range tests {
+		out, found := tree.findCaseInsensitivePath(test.in, true)
+		if found != test.found || (found && (string(out) != test.out)) {
+			t.Errorf("Wrong result for '%s': got %s, %t; want %s, %t",
+				test.in, string(out), found, test.out, test.found)
+			return
+		}
+	}
+	// With fixTrailingSlash = false
+	for _, test := range tests {
+		out, found := tree.findCaseInsensitivePath(test.in, false)
+		if test.slash {
+			if found { // test needs a trailingSlash fix. It must not be found!
+				t.Errorf("Found without fixTrailingSlash: %s; got %s", test.in, string(out))
+			}
+		} else {
+			if found != test.found || (found && (string(out) != test.out)) {
+				t.Errorf("Wrong result for '%s': got %s, %t; want %s, %t",
+					test.in, string(out), found, test.out, test.found)
+				return
+			}
+		}
+	}
+}
+
+func TestTreeInvalidNodeType(t *testing.T) {
+	const panicMsg = "invalid node type"
+
+	tree := &node{}
+	tree.addRoute("/", fakeHandler("/"))
+	tree.addRoute("/:page", fakeHandler("/:page"))
+
+	// set invalid node type
+	tree.children[0].nType = 42
+
+	// normal lookup
+	recv := catchPanic(func() {
+		tree.getValue("/test", nil, getSkippedNodes(), false)
+	})
+	if rs, ok := recv.(string); !ok || rs != panicMsg {
+		t.Fatalf("Expected panic '"+panicMsg+"', got '%v'", recv)
+	}
+
+	// case-insensitive lookup
+	recv = catchPanic(func() {
+		tree.findCaseInsensitivePath("/test", true)
+	})
+	if rs, ok := recv.(string); !ok || rs != panicMsg {
+		t.Fatalf("Expected panic '"+panicMsg+"', got '%v'", recv)
+	}
+}
+
+func TestTreeInvalidParamsType(t *testing.T) {
+	tree := &node{}
+	// add a child with wildcard
+	route := "/:path"
+	tree.addRoute(route, fakeHandler(route))
+
+	// set invalid Params type
+	params := make(Params, 0)
+
+	// try to trigger slice bounds out of range with capacity 0
+	tree.getValue("/test", &params, getSkippedNodes(), false)
+}
+
+func TestTreeExpandParamsCapacity(t *testing.T) {
+	data := []struct {
+		path string
+	}{
+		{"/:path"},
+		{"/*path"},
+	}
+
+	for _, item := range data {
+		tree := &node{}
+		tree.addRoute(item.path, fakeHandler(item.path))
+		params := make(Params, 0)
+
+		value := tree.getValue("/test", &params, getSkippedNodes(), false)
+
+		if value.params == nil {
+			t.Errorf("Expected %s params to be set, but they weren't", item.path)
+			continue
+		}
+
+		if len(*value.params) != 1 {
+			t.Errorf("Wrong number of %s params: got %d, want %d",
+				item.path, len(*value.params), 1)
+			continue
+		}
+	}
+}
+
+func TestTreeWildcardConflictEx(t *testing.T) {
+	conflicts := [...]struct {
+		route        string
+		segPath      string
+		existPath    string
+		existSegPath string
+	}{
+		{"/who/are/foo", "/foo", `/who/are/\*you`, `/\*you`},
+		{"/who/are/foo/", "/foo/", `/who/are/\*you`, `/\*you`},
+		{"/who/are/foo/bar", "/foo/bar", `/who/are/\*you`, `/\*you`},
+		{"/con:nection", ":nection", `/con:tact`, `:tact`},
+	}
+
+	for _, conflict := range conflicts {
+		// I have to re-create a 'tree', because the 'tree' will be
+		// in an inconsistent state when the loop recovers from the
+		// panic which threw by 'addRoute' function.
+		tree := &node{}
+		routes := [...]string{
+			"/con:tact",
+			"/who/are/*you",
+			"/who/foo/hello",
+		}
+
+		for _, route := range routes {
+			tree.addRoute(route, fakeHandler(route))
+		}
+
+		recv := catchPanic(func() {
+			tree.addRoute(conflict.route, fakeHandler(conflict.route))
+		})
+
+		if !regexp.MustCompile(fmt.Sprintf("'%s' in new path .* conflicts with existing wildcard '%s' in existing prefix '%s'", conflict.segPath, conflict.existSegPath, conflict.existPath)).MatchString(fmt.Sprint(recv)) {
+			t.Fatalf("invalid wildcard conflict error (%v)", recv)
+		}
+	}
+}
+
+func TestTreeInvalidEscape(t *testing.T) {
+	routes := map[string]bool{
+		"/r1/r":    true,
+		"/r2/:r":   true,
+		"/r3/\\:r": true,
+	}
+	tree := &node{}
+	for route, valid := range routes {
+		recv := catchPanic(func() {
+			tree.addRoute(route, fakeHandler(route))
+		})
+		if recv == nil != valid {
+			t.Fatalf("%s should be %t but got %v", route, valid, recv)
+		}
+	}
+}
+
+func TestWildcardInvalidSlash(t *testing.T) {
+	const panicMsgPrefix = "no / before catch-all in path"
+
+	routes := map[string]bool{
+		"/foo/bar":  true,
+		"/foo/x*zy": false,
+		"/foo/b*r":  false,
+	}
+
+	for route, valid := range routes {
+		tree := &node{}
+		recv := catchPanic(func() {
+			tree.addRoute(route, nil)
+		})
+
+		if recv == nil != valid {
+			t.Fatalf("%s should be %t but got %v", route, valid, recv)
+		}
+
+		if rs, ok := recv.(string); recv != nil && (!ok || !strings.HasPrefix(rs, panicMsgPrefix)) {
+			t.Fatalf(`"Expected panic "%s" for route '%s', got "%v"`, panicMsgPrefix, route, recv)
+		}
+	}
+}