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// Copyright 2022 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 lsppos_test
import (
"go/token"
"testing"
. "golang.org/x/tools/gopls/internal/lsp/lsppos"
"golang.org/x/tools/gopls/internal/lsp/protocol"
)
func makeTokenMapper(content []byte) (*TokenMapper, *token.File) {
file := token.NewFileSet().AddFile("p.go", -1, len(content))
file.SetLinesForContent(content)
return NewTokenMapper(content, file), file
}
func TestInvalidPosition(t *testing.T) {
content := []byte("a𐐀b\r\nx\ny")
m, _ := makeTokenMapper(content)
for _, pos := range []token.Pos{-1, 100} {
posn, ok := m.Position(pos)
if ok {
t.Errorf("Position(%d) = %v, want error", pos, posn)
}
}
}
func TestTokenPosition(t *testing.T) {
for _, test := range tests {
m, f := makeTokenMapper([]byte(test.content))
pos := token.Pos(f.Base() + test.offset())
got, ok := m.Position(pos)
if !ok {
t.Error("invalid position for", test.substrOrOffset)
continue
}
want := protocol.Position{Line: uint32(test.wantLine), Character: uint32(test.wantChar)}
if got != want {
t.Errorf("Position(%d) = %v, want %v", pos, got, want)
}
gotRange, err := m.Range(token.Pos(f.Base()), pos)
if err != nil {
t.Fatal(err)
}
wantRange := protocol.Range{
End: want,
}
if gotRange != wantRange {
t.Errorf("Range(%d) = %v, want %v", pos, got, want)
}
}
}
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