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// Copyright 2020 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 fake
import (
"testing"
"golang.org/x/tools/gopls/internal/lsp/protocol"
)
func TestApplyEdits(t *testing.T) {
tests := []struct {
label string
content string
edits []protocol.TextEdit
want string
wantErr bool
}{
{
label: "empty content",
},
{
label: "empty edit",
content: "hello",
edits: []protocol.TextEdit{},
want: "hello",
},
{
label: "unicode edit",
content: "hello, 日本語",
edits: []protocol.TextEdit{
NewEdit(0, 7, 0, 10, "world"),
},
want: "hello, world",
},
{
label: "range edit",
content: "ABC\nDEF\nGHI\nJKL",
edits: []protocol.TextEdit{
NewEdit(1, 1, 2, 3, "12\n345"),
},
want: "ABC\nD12\n345\nJKL",
},
{
label: "regression test for issue #57627",
content: "go 1.18\nuse moda/a",
edits: []protocol.TextEdit{
NewEdit(1, 0, 1, 0, "\n"),
NewEdit(2, 0, 2, 0, "\n"),
},
want: "go 1.18\n\nuse moda/a\n",
},
{
label: "end before start",
content: "ABC\nDEF\nGHI\nJKL",
edits: []protocol.TextEdit{
NewEdit(2, 3, 1, 1, "12\n345"),
},
wantErr: true,
},
{
label: "out of bounds line",
content: "ABC\nDEF\nGHI\nJKL",
edits: []protocol.TextEdit{
NewEdit(1, 1, 4, 3, "12\n345"),
},
wantErr: true,
},
{
label: "out of bounds column",
content: "ABC\nDEF\nGHI\nJKL",
edits: []protocol.TextEdit{
NewEdit(1, 4, 2, 3, "12\n345"),
},
wantErr: true,
},
}
for _, test := range tests {
test := test
t.Run(test.label, func(t *testing.T) {
got, err := applyEdits(protocol.NewMapper("", []byte(test.content)), test.edits, false)
if (err != nil) != test.wantErr {
t.Errorf("got err %v, want error: %t", err, test.wantErr)
}
if err != nil {
return
}
if got := string(got); got != test.want {
t.Errorf("got %q, want %q", got, test.want)
}
})
}
}
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