mv internal lib

lib/osutil/replacingwriter_test.go

@@ -0,0 +1,44 @@
+// Copyright (C) 2014 The Syncthing Authors.
+//
+// This Source Code Form is subject to the terms of the Mozilla Public
+// License, v. 2.0. If a copy of the MPL was not distributed with this file,
+// You can obtain one at http://mozilla.org/MPL/2.0/.
+
+package osutil
+
+import (
+	"bytes"
+	"fmt"
+	"testing"
+)
+
+var testcases = []struct {
+	from byte
+	to   []byte
+	a, b string
+}{
+	{'\n', []byte{'\r', '\n'}, "", ""},
+	{'\n', []byte{'\r', '\n'}, "foo", "foo"},
+	{'\n', []byte{'\r', '\n'}, "foo\n", "foo\r\n"},
+	{'\n', []byte{'\r', '\n'}, "foo\nbar", "foo\r\nbar"},
+	{'\n', []byte{'\r', '\n'}, "foo\nbar\nbaz", "foo\r\nbar\r\nbaz"},
+	{'\n', []byte{'\r', '\n'}, "\nbar", "\r\nbar"},
+	{'o', []byte{'x', 'l', 'r'}, "\nfoo", "\nfxlrxlr"},
+	{'o', nil, "\nfoo", "\nf"},
+	{'f', []byte{}, "\nfoo", "\noo"},
+}
+
+func TestReplacingWriter(t *testing.T) {
+	for _, tc := range testcases {
+		var buf bytes.Buffer
+		w := ReplacingWriter{
+			Writer: &buf,
+			From:   tc.from,
+			To:     tc.to,
+		}
+		fmt.Fprint(w, tc.a)
+		if buf.String() != tc.b {
+			t.Errorf("%q != %q", buf.String(), tc.b)
+		}
+	}
+}