Zero allocation router, first commit

path_test.go

@@ -0,0 +1,92 @@
+// Copyright 2013 Julien Schmidt. All rights reserved.
+// Based on the path package, Copyright 2009 The Go Authors.
+// Use of this source code is governed by a BSD-style license that can be found
+// in the LICENSE file.
+
+package gin
+
+import (
+	"runtime"
+	"testing"
+)
+
+var cleanTests = []struct {
+	path, result string
+}{
+	// Already clean
+	{"/", "/"},
+	{"/abc", "/abc"},
+	{"/a/b/c", "/a/b/c"},
+	{"/abc/", "/abc/"},
+	{"/a/b/c/", "/a/b/c/"},
+
+	// missing root
+	{"", "/"},
+	{"abc", "/abc"},
+	{"abc/def", "/abc/def"},
+	{"a/b/c", "/a/b/c"},
+
+	// Remove doubled slash
+	{"//", "/"},
+	{"/abc//", "/abc/"},
+	{"/abc/def//", "/abc/def/"},
+	{"/a/b/c//", "/a/b/c/"},
+	{"/abc//def//ghi", "/abc/def/ghi"},
+	{"//abc", "/abc"},
+	{"///abc", "/abc"},
+	{"//abc//", "/abc/"},
+
+	// Remove . elements
+	{".", "/"},
+	{"./", "/"},
+	{"/abc/./def", "/abc/def"},
+	{"/./abc/def", "/abc/def"},
+	{"/abc/.", "/abc/"},
+
+	// Remove .. elements
+	{"..", "/"},
+	{"../", "/"},
+	{"../../", "/"},
+	{"../..", "/"},
+	{"../../abc", "/abc"},
+	{"/abc/def/ghi/../jkl", "/abc/def/jkl"},
+	{"/abc/def/../ghi/../jkl", "/abc/jkl"},
+	{"/abc/def/..", "/abc"},
+	{"/abc/def/../..", "/"},
+	{"/abc/def/../../..", "/"},
+	{"/abc/def/../../..", "/"},
+	{"/abc/def/../../../ghi/jkl/../../../mno", "/mno"},
+
+	// Combinations
+	{"abc/./../def", "/def"},
+	{"abc//./../def", "/def"},
+	{"abc/../../././../def", "/def"},
+}
+
+func TestPathClean(t *testing.T) {
+	for _, test := range cleanTests {
+		if s := CleanPath(test.path); s != test.result {
+			t.Errorf("CleanPath(%q) = %q, want %q", test.path, s, test.result)
+		}
+		if s := CleanPath(test.result); s != test.result {
+			t.Errorf("CleanPath(%q) = %q, want %q", test.result, s, test.result)
+		}
+	}
+}
+
+func TestPathCleanMallocs(t *testing.T) {
+	if testing.Short() {
+		t.Skip("skipping malloc count in short mode")
+	}
+	if runtime.GOMAXPROCS(0) > 1 {
+		t.Log("skipping AllocsPerRun checks; GOMAXPROCS>1")
+		return
+	}
+
+	for _, test := range cleanTests {
+		allocs := testing.AllocsPerRun(100, func() { CleanPath(test.result) })
+		if allocs > 0 {
+			t.Errorf("CleanPath(%q): %v allocs, want zero", test.result, allocs)
+		}
+	}
+}