1 files changed, 19 insertions, 0 deletions
diff --git a/libgo/go/os/error_test.go b/libgo/go/os/error_test.go
index 02ed2351c5c..5477e7ecbdb 100644
--- a/libgo/go/os/error_test.go
+++ b/libgo/go/os/error_test.go
@@ -93,6 +93,8 @@ var isExistTests = []struct {
 	{&os.LinkError{Err: os.ErrPermission}, false, false},
 	{&os.LinkError{Err: os.ErrExist}, true, false},
 	{&os.LinkError{Err: os.ErrNotExist}, false, true},
+	{&os.SyscallError{Err: os.ErrNotExist}, false, true},
+	{&os.SyscallError{Err: os.ErrExist}, true, false},
 	{nil, false, false},
 }
 
@@ -107,6 +109,23 @@ func TestIsExist(t *testing.T) {
 	}
 }
 
+var isPermissionTests = []struct {
+	err  error
+	want bool
+}{
+	{nil, false},
+	{&os.PathError{Err: os.ErrPermission}, true},
+	{&os.SyscallError{Err: os.ErrPermission}, true},
+}
+
+func TestIsPermission(t *testing.T) {
+	for _, tt := range isPermissionTests {
+		if got := os.IsPermission(tt.err); got != tt.want {
+			t.Errorf("os.IsPermission(%#v) = %v; want %v", tt.err, got, tt.want)
+		}
+	}
+}
+
 func TestErrPathNUL(t *testing.T) {
 	f, err := ioutil.TempFile("", "_Go_ErrPathNUL\x00")
 	if err == nil {