1 files changed, 576 insertions, 0 deletions
diff --git a/src/pkg/path/filepath/path_test.go b/src/pkg/path/filepath/path_test.go
new file mode 100644
index 000000000..d2a10698e
--- /dev/null
+++ b/src/pkg/path/filepath/path_test.go
@@ -0,0 +1,576 @@
+// Copyright 2009 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package filepath_test
+
+import (
+	"os"
+	"path/filepath"
+	"reflect"
+	"runtime"
+	"strings"
+	"testing"
+)
+
+type PathTest struct {
+	path, result string
+}
+
+var cleantests = []PathTest{
+	// Already clean
+	{"", "."},
+	{"abc", "abc"},
+	{"abc/def", "abc/def"},
+	{"a/b/c", "a/b/c"},
+	{".", "."},
+	{"..", ".."},
+	{"../..", "../.."},
+	{"../../abc", "../../abc"},
+	{"/abc", "/abc"},
+	{"/", "/"},
+
+	// Remove trailing slash
+	{"abc/", "abc"},
+	{"abc/def/", "abc/def"},
+	{"a/b/c/", "a/b/c"},
+	{"./", "."},
+	{"../", ".."},
+	{"../../", "../.."},
+	{"/abc/", "/abc"},
+
+	// Remove doubled slash
+	{"abc//def//ghi", "abc/def/ghi"},
+	{"//abc", "/abc"},
+	{"///abc", "/abc"},
+	{"//abc//", "/abc"},
+	{"abc//", "abc"},
+
+	// Remove . elements
+	{"abc/./def", "abc/def"},
+	{"/./abc/def", "/abc/def"},
+	{"abc/.", "abc"},
+
+	// Remove .. elements
+	{"abc/def/ghi/../jkl", "abc/def/jkl"},
+	{"abc/def/../ghi/../jkl", "abc/jkl"},
+	{"abc/def/..", "abc"},
+	{"abc/def/../..", "."},
+	{"/abc/def/../..", "/"},
+	{"abc/def/../../..", ".."},
+	{"/abc/def/../../..", "/"},
+	{"abc/def/../../../ghi/jkl/../../../mno", "../../mno"},
+
+	// Combinations
+	{"abc/./../def", "def"},
+	{"abc//./../def", "def"},
+	{"abc/../../././../def", "../../def"},
+}
+
+var wincleantests = []PathTest{
+	{`c:`, `c:.`},
+	{`c:\`, `c:\`},
+	{`c:\abc`, `c:\abc`},
+	{`c:abc\..\..\.\.\..\def`, `c:..\..\def`},
+	{`c:\abc\def\..\..`, `c:\`},
+	{`c:..\abc`, `c:..\abc`},
+	{`\`, `\`},
+	{`/`, `\`},
+}
+
+func TestClean(t *testing.T) {
+	tests := cleantests
+	if runtime.GOOS == "windows" {
+		for i, _ := range tests {
+			tests[i].result = filepath.FromSlash(tests[i].result)
+		}
+		tests = append(tests, wincleantests...)
+	}
+	for _, test := range tests {
+		if s := filepath.Clean(test.path); s != test.result {
+			t.Errorf("Clean(%q) = %q, want %q", test.path, s, test.result)
+		}
+	}
+}
+
+const sep = filepath.Separator
+
+var slashtests = []PathTest{
+	{"", ""},
+	{"/", string(sep)},
+	{"/a/b", string([]byte{sep, 'a', sep, 'b'})},
+	{"a//b", string([]byte{'a', sep, sep, 'b'})},
+}
+
+func TestFromAndToSlash(t *testing.T) {
+	for _, test := range slashtests {
+		if s := filepath.FromSlash(test.path); s != test.result {
+			t.Errorf("FromSlash(%q) = %q, want %q", test.path, s, test.result)
+		}
+		if s := filepath.ToSlash(test.result); s != test.path {
+			t.Errorf("ToSlash(%q) = %q, want %q", test.result, s, test.path)
+		}
+	}
+}
+
+type SplitListTest struct {
+	list   string
+	result []string
+}
+
+const lsep = filepath.ListSeparator
+
+var splitlisttests = []SplitListTest{
+	{"", []string{}},
+	{string([]byte{'a', lsep, 'b'}), []string{"a", "b"}},
+	{string([]byte{lsep, 'a', lsep, 'b'}), []string{"", "a", "b"}},
+}
+
+func TestSplitList(t *testing.T) {
+	for _, test := range splitlisttests {
+		if l := filepath.SplitList(test.list); !reflect.DeepEqual(l, test.result) {
+			t.Errorf("SplitList(%q) = %s, want %s", test.list, l, test.result)
+		}
+	}
+}
+
+type SplitTest struct {
+	path, dir, file string
+}
+
+var unixsplittests = []SplitTest{
+	{"a/b", "a/", "b"},
+	{"a/b/", "a/b/", ""},
+	{"a/", "a/", ""},
+	{"a", "", "a"},
+	{"/", "/", ""},
+}
+
+func TestSplit(t *testing.T) {
+	var splittests []SplitTest
+	splittests = unixsplittests
+	for _, test := range splittests {
+		if d, f := filepath.Split(test.path); d != test.dir || f != test.file {
+			t.Errorf("Split(%q) = %q, %q, want %q, %q", test.path, d, f, test.dir, test.file)
+		}
+	}
+}
+
+type JoinTest struct {
+	elem []string
+	path string
+}
+
+var jointests = []JoinTest{
+	// zero parameters
+	{[]string{}, ""},
+
+	// one parameter
+	{[]string{""}, ""},
+	{[]string{"a"}, "a"},
+
+	// two parameters
+	{[]string{"a", "b"}, "a/b"},
+	{[]string{"a", ""}, "a"},
+	{[]string{"", "b"}, "b"},
+	{[]string{"/", "a"}, "/a"},
+	{[]string{"/", ""}, "/"},
+	{[]string{"a/", "b"}, "a/b"},
+	{[]string{"a/", ""}, "a"},
+	{[]string{"", ""}, ""},
+}
+
+var winjointests = []JoinTest{
+	{[]string{`directory`, `file`}, `directory\file`},
+	{[]string{`C:\Windows\`, `System32`}, `C:\Windows\System32`},
+	{[]string{`C:\Windows\`, ``}, `C:\Windows`},
+	{[]string{`C:\`, `Windows`}, `C:\Windows`},
+	{[]string{`C:`, `Windows`}, `C:\Windows`},
+}
+
+// join takes a []string and passes it to Join.
+func join(elem []string, args ...string) string {
+	args = elem
+	return filepath.Join(args...)
+}
+
+func TestJoin(t *testing.T) {
+	if runtime.GOOS == "windows" {
+		jointests = append(jointests, winjointests...)
+	}
+	for _, test := range jointests {
+		if p := join(test.elem); p != filepath.FromSlash(test.path) {
+			t.Errorf("join(%q) = %q, want %q", test.elem, p, test.path)
+		}
+	}
+}
+
+type ExtTest struct {
+	path, ext string
+}
+
+var exttests = []ExtTest{
+	{"path.go", ".go"},
+	{"path.pb.go", ".go"},
+	{"a.dir/b", ""},
+	{"a.dir/b.go", ".go"},
+	{"a.dir/", ""},
+}
+
+func TestExt(t *testing.T) {
+	for _, test := range exttests {
+		if x := filepath.Ext(test.path); x != test.ext {
+			t.Errorf("Ext(%q) = %q, want %q", test.path, x, test.ext)
+		}
+	}
+}
+
+type Node struct {
+	name    string
+	entries []*Node // nil if the entry is a file
+	mark    int
+}
+
+var tree = &Node{
+	"testdata",
+	[]*Node{
+		&Node{"a", nil, 0},
+		&Node{"b", []*Node{}, 0},
+		&Node{"c", nil, 0},
+		&Node{
+			"d",
+			[]*Node{
+				&Node{"x", nil, 0},
+				&Node{"y", []*Node{}, 0},
+				&Node{
+					"z",
+					[]*Node{
+						&Node{"u", nil, 0},
+						&Node{"v", nil, 0},
+					},
+					0,
+				},
+			},
+			0,
+		},
+	},
+	0,
+}
+
+func walkTree(n *Node, path string, f func(path string, n *Node)) {
+	f(path, n)
+	for _, e := range n.entries {
+		walkTree(e, filepath.Join(path, e.name), f)
+	}
+}
+
+func makeTree(t *testing.T) {
+	walkTree(tree, tree.name, func(path string, n *Node) {
+		if n.entries == nil {
+			fd, err := os.Create(path)
+			if err != nil {
+				t.Errorf("makeTree: %v", err)
+			}
+			fd.Close()
+		} else {
+			os.Mkdir(path, 0770)
+		}
+	})
+}
+
+func markTree(n *Node) { walkTree(n, "", func(path string, n *Node) { n.mark++ }) }
+
+func checkMarks(t *testing.T) {
+	walkTree(tree, tree.name, func(path string, n *Node) {
+		if n.mark != 1 {
+			t.Errorf("node %s mark = %d; expected 1", path, n.mark)
+		}
+		n.mark = 0
+	})
+}
+
+// Assumes that each node name is unique. Good enough for a test.
+func mark(name string) {
+	name = filepath.ToSlash(name)
+	walkTree(tree, tree.name, func(path string, n *Node) {
+		if n.name == name {
+			n.mark++
+		}
+	})
+}
+
+type TestVisitor struct{}
+
+func (v *TestVisitor) VisitDir(path string, f *os.FileInfo) bool {
+	mark(f.Name)
+	return true
+}
+
+func (v *TestVisitor) VisitFile(path string, f *os.FileInfo) {
+	mark(f.Name)
+}
+
+func TestWalk(t *testing.T) {
+	makeTree(t)
+
+	// 1) ignore error handling, expect none
+	v := &TestVisitor{}
+	filepath.Walk(tree.name, v, nil)
+	checkMarks(t)
+
+	// 2) handle errors, expect none
+	errors := make(chan os.Error, 64)
+	filepath.Walk(tree.name, v, errors)
+	select {
+	case err := <-errors:
+		t.Errorf("no error expected, found: %s", err)
+	default:
+		// ok
+	}
+	checkMarks(t)
+
+	// Test permission errors.  Only possible if we're not root
+	// and only on some file systems (AFS, FAT).  To avoid errors during
+	// all.bash on those file systems, skip during gotest -short.
+	if os.Getuid() > 0 && !testing.Short() {
+		// introduce 2 errors: chmod top-level directories to 0
+		os.Chmod(filepath.Join(tree.name, tree.entries[1].name), 0)
+		os.Chmod(filepath.Join(tree.name, tree.entries[3].name), 0)
+		// mark respective subtrees manually
+		markTree(tree.entries[1])
+		markTree(tree.entries[3])
+		// correct double-marking of directory itself
+		tree.entries[1].mark--
+		tree.entries[3].mark--
+
+		// 3) handle errors, expect two
+		errors = make(chan os.Error, 64)
+		os.Chmod(filepath.Join(tree.name, tree.entries[1].name), 0)
+		filepath.Walk(tree.name, v, errors)
+	Loop:
+		for i := 1; i <= 2; i++ {
+			select {
+			case <-errors:
+				// ok
+			default:
+				t.Errorf("%d. error expected, none found", i)
+				break Loop
+			}
+		}
+		select {
+		case err := <-errors:
+			t.Errorf("only two errors expected, found 3rd: %v", err)
+		default:
+			// ok
+		}
+		// the inaccessible subtrees were marked manually
+		checkMarks(t)
+	}
+
+	// cleanup
+	os.Chmod(filepath.Join(tree.name, tree.entries[1].name), 0770)
+	os.Chmod(filepath.Join(tree.name, tree.entries[3].name), 0770)
+	if err := os.RemoveAll(tree.name); err != nil {
+		t.Errorf("removeTree: %v", err)
+	}
+}
+
+var basetests = []PathTest{
+	{"", "."},
+	{".", "."},
+	{"/.", "."},
+	{"/", "/"},
+	{"////", "/"},
+	{"x/", "x"},
+	{"abc", "abc"},
+	{"abc/def", "def"},
+	{"a/b/.x", ".x"},
+	{"a/b/c.", "c."},
+	{"a/b/c.x", "c.x"},
+}
+
+func TestBase(t *testing.T) {
+	for _, test := range basetests {
+		if s := filepath.ToSlash(filepath.Base(test.path)); s != test.result {
+			t.Errorf("Base(%q) = %q, want %q", test.path, s, test.result)
+		}
+	}
+}
+
+type IsAbsTest struct {
+	path  string
+	isAbs bool
+}
+
+var isabstests = []IsAbsTest{
+	{"", false},
+	{"/", true},
+	{"/usr/bin/gcc", true},
+	{"..", false},
+	{"/a/../bb", true},
+	{".", false},
+	{"./", false},
+	{"lala", false},
+}
+
+var winisabstests = []IsAbsTest{
+	{`C:\`, true},
+	{`c\`, false},
+	{`c::`, false},
+	{`c:`, false},
+	{`/`, false},
+	{`\`, false},
+	{`\Windows`, false},
+	{`c:a\b`, false},
+}
+
+func TestIsAbs(t *testing.T) {
+	var tests []IsAbsTest
+	if runtime.GOOS == "windows" {
+		tests = append(tests, winisabstests...)
+		// All non-windows tests should fail, because they have no volume letter.
+		for _, test := range isabstests {
+			tests = append(tests, IsAbsTest{test.path, false})
+		}
+		// All non-windows test should work as intended if prefixed with volume letter.
+		for _, test := range isabstests {
+			tests = append(tests, IsAbsTest{"c:" + test.path, test.isAbs})
+		}
+	} else {
+		tests = isabstests
+	}
+
+	for _, test := range tests {
+		if r := filepath.IsAbs(test.path); r != test.isAbs {
+			t.Errorf("IsAbs(%q) = %v, want %v", test.path, r, test.isAbs)
+		}
+	}
+}
+
+type EvalSymlinksTest struct {
+	path, dest string
+}
+
+var EvalSymlinksTestDirs = []EvalSymlinksTest{
+	{"test", ""},
+	{"test/dir", ""},
+	{"test/dir/link3", "../../"},
+	{"test/link1", "../test"},
+	{"test/link2", "dir"},
+}
+
+var EvalSymlinksTests = []EvalSymlinksTest{
+	{"test", "test"},
+	{"test/dir", "test/dir"},
+	{"test/dir/../..", "."},
+	{"test/link1", "test"},
+	{"test/link2", "test/dir"},
+	{"test/link1/dir", "test/dir"},
+	{"test/link2/..", "test"},
+	{"test/dir/link3", "."},
+	{"test/link2/link3/test", "test"},
+}
+
+var EvalSymlinksAbsWindowsTests = []EvalSymlinksTest{
+	{`c:\`, `c:\`},
+}
+
+func testEvalSymlinks(t *testing.T, tests []EvalSymlinksTest) {
+	for _, d := range tests {
+		if p, err := filepath.EvalSymlinks(d.path); err != nil {
+			t.Errorf("EvalSymlinks(%q) error: %v", d.path, err)
+		} else if filepath.Clean(p) != filepath.Clean(d.dest) {
+			t.Errorf("EvalSymlinks(%q)=%q, want %q", d.path, p, d.dest)
+		}
+	}
+}
+
+func TestEvalSymlinks(t *testing.T) {
+	defer os.RemoveAll("test")
+	for _, d := range EvalSymlinksTestDirs {
+		var err os.Error
+		if d.dest == "" {
+			err = os.Mkdir(d.path, 0755)
+		} else {
+			if runtime.GOOS != "windows" {
+				err = os.Symlink(d.dest, d.path)
+			}
+		}
+		if err != nil {
+			t.Fatal(err)
+		}
+	}
+	var tests []EvalSymlinksTest
+	if runtime.GOOS == "windows" {
+		for _, d := range EvalSymlinksTests {
+			if d.path == d.dest {
+				// will test only real files and directories
+				tests = append(tests, d)
+			}
+		}
+	} else {
+		tests = EvalSymlinksTests
+	}
+	// relative
+	testEvalSymlinks(t, tests)
+	// absolute
+	goroot, err := filepath.EvalSymlinks(os.Getenv("GOROOT"))
+	if err != nil {
+		t.Fatalf("EvalSymlinks(%q) error: %v", os.Getenv("GOROOT"), err)
+	}
+	testroot := filepath.Join(goroot, "src", "pkg", "path", "filepath")
+	for i, d := range tests {
+		tests[i].path = filepath.Join(testroot, d.path)
+		tests[i].dest = filepath.Join(testroot, d.dest)
+	}
+	if runtime.GOOS == "windows" {
+		for _, d := range EvalSymlinksAbsWindowsTests {
+			tests = append(tests, d)
+		}
+	}
+	testEvalSymlinks(t, tests)
+}
+
+// Test paths relative to $GOROOT/src
+var abstests = []string{
+	"../AUTHORS",
+	"pkg/../../AUTHORS",
+	"Make.pkg",
+	"pkg/Makefile",
+
+	// Already absolute
+	"$GOROOT/src/Make.pkg",
+	"$GOROOT/src/../src/Make.pkg",
+}
+
+func TestAbs(t *testing.T) {
+	oldwd, err := os.Getwd()
+	if err != nil {
+		t.Fatal("Getwd failed: " + err.String())
+	}
+	defer os.Chdir(oldwd)
+	goroot := os.Getenv("GOROOT")
+	cwd := filepath.Join(goroot, "src")
+	os.Chdir(cwd)
+	for _, path := range abstests {
+		path = strings.Replace(path, "$GOROOT", goroot, -1)
+		abspath, err := filepath.Abs(path)
+		if err != nil {
+			t.Errorf("Abs(%q) error: %v", path, err)
+		}
+		info, err := os.Stat(path)
+		if err != nil {
+			t.Errorf("%s: %s", path, err)
+		}
+		absinfo, err := os.Stat(abspath)
+		if err != nil || absinfo.Ino != info.Ino {
+			t.Errorf("Abs(%q)=%q, not the same file", path, abspath)
+		}
+		if !filepath.IsAbs(abspath) {
+			t.Errorf("Abs(%q)=%q, not an absolute path", path, abspath)
+		}
+		if filepath.IsAbs(path) && abspath != filepath.Clean(path) {
+			t.Errorf("Abs(%q)=%q, isn't clean", path, abspath)
+		}
+	}
+}