1 files changed, 34 insertions, 0 deletions
diff --git a/src/cmd/compile/internal/syntax/scanner_test.go b/src/cmd/compile/internal/syntax/scanner_test.go
new file mode 100644
index 0000000000..0e90812d4b
--- /dev/null
+++ b/src/cmd/compile/internal/syntax/scanner_test.go
@@ -0,0 +1,34 @@
+// Copyright 2016 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 syntax
+
+import (
+	"fmt"
+	"io/ioutil"
+	"testing"
+)
+
+func TestScanner(t *testing.T) {
+	src, err := ioutil.ReadFile("parser.go")
+	if err != nil {
+		t.Fatal(err)
+	}
+	var s scanner
+	s.init(src)
+	for {
+		s.next()
+		if s.tok == _EOF {
+			break
+		}
+		switch s.tok {
+		case _Name:
+			fmt.Println(s.line, s.tok, "=>", s.lit)
+		case _Operator:
+			fmt.Println(s.line, s.tok, "=>", s.op, s.prec)
+		default:
+			fmt.Println(s.line, s.tok)
+		}
+	}
+}