checkPos(bpos3, "fileB:1:4")
	checkNumFiles(1)

	// idempotent / no effect
	fset.RemoveFile(a)
	checkPos(apos3, "-")
	checkPos(bpos3, "fileB:1:4")
	checkNumFiles(1)
}

func TestFileAddLineColumnInfo(t *testing.T) {
	const (
		filename = "test.go"
		filesize = 100
	)

	tests := []struct {
		name  string
		infos []lineInfo
		want  []lineInfo
	}{
		{
			name: "normal",