1 files changed, 35 insertions, 0 deletions
diff --git a/misc/cgo/test/helpers.go b/misc/cgo/test/helpers.go
new file mode 100644
index 000000000..890dcbdf1
--- /dev/null
+++ b/misc/cgo/test/helpers.go
@@ -0,0 +1,35 @@
+// Copyright 2011 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 cgotest
+
+// const char *greeting = "hello, world";
+import "C"
+
+import (
+	"reflect"
+	"testing"
+	"unsafe"
+)
+
+const greeting = "hello, world"
+
+type testPair struct {
+	Name      string
+	Got, Want interface{}
+}
+
+var testPairs = []testPair{
+	{"GoString", C.GoString(C.greeting), greeting},
+	{"GoStringN", C.GoStringN(C.greeting, 5), greeting[:5]},
+	{"GoBytes", C.GoBytes(unsafe.Pointer(C.greeting), 5), []byte(greeting[:5])},
+}
+
+func testHelpers(t *testing.T) {
+	for _, pair := range testPairs {
+		if !reflect.DeepEqual(pair.Got, pair.Want) {
+			t.Errorf("%s: got %#v, want %#v", pair.Name, pair.Got, pair.Want)
+		}
+	}
+}