1 files changed, 31 insertions, 0 deletions
diff --git a/libgo/go/os/error_test.go b/libgo/go/os/error_test.go
new file mode 100644
index 00000000000..8218f861aff
--- /dev/null
+++ b/libgo/go/os/error_test.go
@@ -0,0 +1,31 @@
+// Copyright 2012 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 os_test
+
+import (
+	"io/ioutil"
+	"os"
+	"testing"
+)
+
+func TestErrIsExist(t *testing.T) {
+	f, err := ioutil.TempFile("", "_Go_ErrIsExist")
+	if err != nil {
+		t.Fatalf("open ErrIsExist tempfile: %s", err)
+		return
+	}
+	defer os.Remove(f.Name())
+	defer f.Close()
+	f2, err := os.OpenFile(f.Name(), os.O_RDWR|os.O_CREATE|os.O_EXCL, 0600)
+	if err == nil {
+		f2.Close()
+		t.Fatal("Open should have failed")
+		return
+	}
+	if !os.IsExist(err) {
+		t.Fatalf("os.IsExist does not work as expected for %#v", err)
+		return
+	}
+}