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-rw-r--r--src/io/fs/glob_test.go87
1 files changed, 87 insertions, 0 deletions
diff --git a/src/io/fs/glob_test.go b/src/io/fs/glob_test.go
new file mode 100644
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+++ b/src/io/fs/glob_test.go
@@ -0,0 +1,87 @@
+// Copyright 2020 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 fs_test
+
+import (
+ . "io/fs"
+ "os"
+ "path"
+ "testing"
+)
+
+var globTests = []struct {
+ fs FS
+ pattern, result string
+}{
+ {os.DirFS("."), "glob.go", "glob.go"},
+ {os.DirFS("."), "gl?b.go", "glob.go"},
+ {os.DirFS("."), `gl\ob.go`, "glob.go"},
+ {os.DirFS("."), "*", "glob.go"},
+ {os.DirFS(".."), "*/glob.go", "fs/glob.go"},
+}
+
+func TestGlob(t *testing.T) {
+ for _, tt := range globTests {
+ matches, err := Glob(tt.fs, tt.pattern)
+ if err != nil {
+ t.Errorf("Glob error for %q: %s", tt.pattern, err)
+ continue
+ }
+ if !contains(matches, tt.result) {
+ t.Errorf("Glob(%#q) = %#v want %v", tt.pattern, matches, tt.result)
+ }
+ }
+ for _, pattern := range []string{"no_match", "../*/no_match", `\*`} {
+ matches, err := Glob(os.DirFS("."), pattern)
+ if err != nil {
+ t.Errorf("Glob error for %q: %s", pattern, err)
+ continue
+ }
+ if len(matches) != 0 {
+ t.Errorf("Glob(%#q) = %#v want []", pattern, matches)
+ }
+ }
+}
+
+func TestGlobError(t *testing.T) {
+ bad := []string{`[]`, `nonexist/[]`}
+ for _, pattern := range bad {
+ _, err := Glob(os.DirFS("."), pattern)
+ if err != path.ErrBadPattern {
+ t.Errorf("Glob(fs, %#q) returned err=%v, want path.ErrBadPattern", pattern, err)
+ }
+ }
+}
+
+// contains reports whether vector contains the string s.
+func contains(vector []string, s string) bool {
+ for _, elem := range vector {
+ if elem == s {
+ return true
+ }
+ }
+ return false
+}
+
+type globOnly struct{ GlobFS }
+
+func (globOnly) Open(name string) (File, error) { return nil, ErrNotExist }
+
+func TestGlobMethod(t *testing.T) {
+ check := func(desc string, names []string, err error) {
+ t.Helper()
+ if err != nil || len(names) != 1 || names[0] != "hello.txt" {
+ t.Errorf("Glob(%s) = %v, %v, want %v, nil", desc, names, err, []string{"hello.txt"})
+ }
+ }
+
+ // Test that ReadDir uses the method when present.
+ names, err := Glob(globOnly{testFsys}, "*.txt")
+ check("readDirOnly", names, err)
+
+ // Test that ReadDir uses Open when the method is not present.
+ names, err = Glob(openOnly{testFsys}, "*.txt")
+ check("openOnly", names, err)
+}