1// Go support for Protocol Buffers - Google's data interchange format
2//
3// Copyright 2017 The Go Authors.  All rights reserved.
4// https://github.com/golang/protobuf
5//
6// Redistribution and use in source and binary forms, with or without
7// modification, are permitted provided that the following conditions are
8// met:
9//
10//     * Redistributions of source code must retain the above copyright
11// notice, this list of conditions and the following disclaimer.
12//     * Redistributions in binary form must reproduce the above
13// copyright notice, this list of conditions and the following disclaimer
14// in the documentation and/or other materials provided with the
15// distribution.
16//     * Neither the name of Google Inc. nor the names of its
17// contributors may be used to endorse or promote products derived from
18// this software without specific prior written permission.
19//
20// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
21// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
22// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
23// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
24// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
25// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
26// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
27// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
28// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
29// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
30// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
31
32package remap
33
34import (
35	"go/format"
36	"testing"
37)
38
39func TestErrors(t *testing.T) {
40	tests := []struct {
41		in, out string
42	}{
43		{"", "x"},
44		{"x", ""},
45		{"var x int = 5\n", "var x = 5\n"},
46		{"these are \"one\" thing", "those are 'another' thing"},
47	}
48	for _, test := range tests {
49		m, err := Compute([]byte(test.in), []byte(test.out))
50		if err != nil {
51			t.Logf("Got expected error: %v", err)
52			continue
53		}
54		t.Errorf("Compute(%q, %q): got %+v, wanted error", test.in, test.out, m)
55	}
56}
57
58func TestMatching(t *testing.T) {
59	// The input is a source text that will be rearranged by the formatter.
60	const input = `package foo
61var s int
62func main(){}
63`
64
65	output, err := format.Source([]byte(input))
66	if err != nil {
67		t.Fatalf("Formatting failed: %v", err)
68	}
69	m, err := Compute([]byte(input), output)
70	if err != nil {
71		t.Fatalf("Unexpected error: %v", err)
72	}
73
74	// Verify that the mapped locations have the same text.
75	for key, val := range m {
76		want := input[key.Pos:key.End]
77		got := string(output[val.Pos:val.End])
78		if got != want {
79			t.Errorf("Token at %d:%d: got %q, want %q", key.Pos, key.End, got, want)
80		}
81	}
82}
83