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// Copyright (c) 2015, the Dart project authors. Please see the AUTHORS file
// for details. All rights reserved. Use of this source code is governed by a
// BSD-style license that can be found in the LICENSE file.
// @dart = 2.7
// Unittest for the [LocationCollector].
import 'package:compiler/src/io/code_output.dart';
import 'package:compiler/src/io/location_provider.dart';
import 'package:expect/expect.dart';
import 'package:kernel/ast.dart' show Location;
import '../helpers/output_collector.dart';
test(List events, Map<int, List<int>> expectedPositions) {
BufferedOutputSink sink = new BufferedOutputSink();
LocationCollector locationProvider = new LocationCollector();
CodeOutput output =
new StreamCodeOutput(sink, <CodeOutputListener>[locationProvider]);
for (var event in events) {
if (event is String) {
output.add(event);
} else if (event is CodeBuffer) {
output.addBuffer(event);
}
}
output.close();
expectedPositions.forEach((int offset, List<int> expectedPosition) {
if (expectedPosition == null) {
Expect.throws(
() => locationProvider.getLocation(offset),
(e) => true,
'Expected out-of-bounds offset: $offset\n'
'text:"""${sink.text}"""\n'
'locationProvider:$locationProvider');
} else {
Location location = locationProvider.getLocation(offset);
int line = location.line - 1;
int column = location.column - 1;
Expect.equals(
expectedPosition[0],
line,
'Unexpected result: $offset -> $expectedPosition = [$line,$column]\n'
'text:"""${sink.text}"""\n'
'locationProvider:$locationProvider');
Expect.equals(
expectedPosition[1],
column,
'Unexpected result: $offset -> $expectedPosition = [$line,$column]\n'
'text:"""${sink.text}"""\n'
'locationProvider:$locationProvider');
}
});
}
main() {
test([
""
], {
0: [0, 0],
1: null
});
test([
" "
], {
0: [0, 0],
1: [0, 1],
2: null
});
test([
"\n "
], {
0: [0, 0],
1: [1, 0],
2: [1, 1],
3: null
});
Map<int, List<int>> positions = {
0: [0, 0],
1: [0, 1],
2: [1, 0],
3: [1, 1],
4: [2, 0],
5: [2, 1],
6: null
};
test(["a\nb\nc"], positions);
test(["a", "\nb\nc"], positions);
test(["a", "\n", "b\nc"], positions);
CodeBuffer buffer1 = new CodeBuffer();
buffer1.add("a\nb\nc");
test([buffer1], positions);
CodeBuffer buffer2 = new CodeBuffer();
buffer2.add("\nb\nc");
test(["a", buffer2], positions);
CodeBuffer buffer3 = new CodeBuffer();
buffer3.add("a");
test([buffer3, buffer2], positions);
CodeBuffer buffer4 = new CodeBuffer();
buffer4.addBuffer(buffer3);
test([buffer4, buffer2], positions);
}