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package lessgo
import (
"fmt"
"net/http"
"reflect"
"strings"
"testing"
)
func printChildren(n *node, prefix string) {
fmt.Printf(" %02d:%02d %s%s[%d] %v %t %d \r\n", n.priority, n.maxParams, prefix, n.path, len(n.children), n.handle, n.wildChild, n.nType)
for l := len(n.path); l > 0; l-- {
prefix += " "
}
for _, child := range n.children {
printChildren(child, prefix)
}
}
// Used as a workaround since we can't compare functions or their addresses
var fakeHandlerValue string
func fakeHandler(val string) Handle {
return func(http.ResponseWriter, *http.Request, Params) {
fakeHandlerValue = val
}
}
type testRequests []struct {
path string
nilHandler bool
route string
ps Params
}
func checkRequests(t *testing.T, tree *node, requests testRequests) {
for _, request := range requests {
handler, ps, _ := tree.getValue(request.path)
if handler == 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 {
handler(nil, nil, nil)
if fakeHandlerValue != request.route {
t.Errorf("handle mismatch for route '%s': Wrong handle (%s != %s)", request.path, fakeHandlerValue, request.route)
}
}
if !reflect.DeepEqual(ps, 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.handle != 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 checkMaxParams(t *testing.T, n *node) uint8 {
var maxParams uint8
for i := range n.children {
params := checkMaxParams(t, n.children[i])
if params > maxParams {
maxParams = params
}
}
if n.nType > root && !n.wildChild {
maxParams++
}
if n.maxParams != maxParams {
t.Errorf(
"maxParams mismatch for node '%s': is %d, should be %d",
n.path, n.maxParams, maxParams,
)
}
return maxParams
}
func TestCountParams(t *testing.T) {
if countParams("/path/:param1/static/*catch-all") != 2 {
t.Fail()
}
if countParams(strings.Repeat("/:param", 256)) != 255 {
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))
}
//printChildren(tree, "")
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)
checkMaxParams(t, tree)
}
func TestTreeWildcard(t *testing.T) {
tree := &node{}
routes := [...]string{
"/",
"/cmd/:tool/:sub",
"/cmd/:tool/",
"/src/*filepath",
"/search/",
"/search/:query",
"/user_:name",
"/user_:name/about",
"/files/:dir/*filepath",
"/doc/",
"/doc/go_faq.html",
"/doc/go1.html",
"/info/:user/public",
"/info/:user/project/:project",
}
for _, route := range routes {
tree.addRoute(route, fakeHandler(route))
}
//printChildren(tree, "")
checkRequests(t, tree, testRequests{
{"/", false, "/", nil},
{"/cmd/test/", false, "/cmd/:tool/", Params{Param{"tool", "test"}}},
{"/cmd/test", true, "", Params{Param{"tool", "test"}}},
{"/cmd/test/3", false, "/cmd/:tool/:sub", Params{Param{"tool", "test"}, Param{"sub", "3"}}},
{"/src/", false, "/src/*filepath", Params{Param{"filepath", "/"}}},
{"/src/some/file.png", false, "/src/*filepath", Params{Param{"filepath", "/some/file.png"}}},
{"/search/", false, "/search/", nil},
{"/search/someth!ng+in+ünìcodé", false, "/search/:query", Params{Param{"query", "someth!ng+in+ünìcodé"}}},
{"/search/someth!ng+in+ünìcodé/", true, "", Params{Param{"query", "someth!ng+in+ünìcodé"}}},
{"/user_gopher", false, "/user_:name", Params{Param{"name", "gopher"}}},
{"/user_gopher/about", false, "/user_:name/about", Params{Param{"name", "gopher"}}},
{"/files/js/inc/framework.js", false, "/files/:dir/*filepath", Params{Param{"dir", "js"}, Param{"filepath", "/inc/framework.js"}}},
{"/info/gordon/public", false, "/info/:user/public", Params{Param{"user", "gordon"}}},
{"/info/gordon/project/go", false, "/info/:user/project/:project", Params{Param{"user", "gordon"}, Param{"project", "go"}}},
})
checkPriorities(t, tree)
checkMaxParams(t, tree)
}
func catchPanic(testFunc func()) (recv interface{}) {
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)
}
}
//printChildren(tree, "")
}
func TestTreeWildcardConflict(t *testing.T) {
routes := []testRoute{
{"/cmd/:tool/:sub", false},
{"/cmd/vet", true},
{"/src/*filepath", false},
{"/src/*filepathx", true},
{"/src/", true},
{"/src1/", false},
{"/src1/*filepath", true},
{"/src2*filepath", true},
{"/search/:query", false},
{"/search/invalid", true},
{"/user_:name", false},
{"/user_x", true},
{"/user_:name", false},
{"/id:id", false},
{"/id/:id", true},
}
testRoutes(t, routes)
}
func TestTreeChildConflict(t *testing.T) {
routes := []testRoute{
{"/cmd/vet", false},
{"/cmd/:tool/:sub", true},
{"/src/AUTHORS", false},
{"/src/*filepath", true},
{"/user_x", false},
{"/user_:name", true},
{"/id/:id", false},
{"/id:id", true},
{"/:id", true},
{"/*filepath", true},
}
testRoutes(t, routes)
}
func TestTreeDupliatePath(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},
}
testRoutes(t, routes)
}
func TestTreeCatchAllConflictRoot(t *testing.T) {
routes := []testRoute{
{"/", false},
{"/*filepath", true},
}
testRoutes(t, routes)
}
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/hello/: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)
}
}
//printChildren(tree, "")
tsrRoutes := [...]string{
"/hi/",
"/b",
"/search/gopher/",
"/cmd/vet",
"/src",
"/x/",
"/y",
"/0/go/",
"/1/go",
"/a",
"/admin/",
"/admin/config/",
"/admin/config/permissions/",
"/doc/",
}
for _, route := range tsrRoutes {
handler, _, tsr := tree.getValue(route)
if handler != nil {
t.Fatalf("non-nil handler for TSR route '%s", route)
} else if !tsr {
t.Errorf("expected TSR recommendation for route '%s'", route)
}
}
noTsrRoutes := [...]string{
"/",
"/no",
"/no/",
"/_",
"/_/",
"/api/world/abc",
}
for _, route := range noTsrRoutes {
handler, _, tsr := tree.getValue(route)
if handler != nil {
t.Fatalf("non-nil handler for No-TSR route '%s", route)
} else if 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)
}
handler, _, tsr := tree.getValue("/")
if handler != nil {
t.Fatalf("non-nil handler")
} else if tsr {
t.Errorf("expected no TSR recommendation")
}
}
func TestTreeFindCaseInsensitivePath(t *testing.T) {
tree := &node{}
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
}
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},
}
// 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")
})
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)
}
}
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