test/collect_coverage_test.dart - third_party/coverage - Git at Google

 // 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.

 @Retry(3)
 import 'dart:async';
 import 'dart:convert' show json, LineSplitter, utf8;
 import 'dart:io';

 import 'package:coverage/coverage.dart';
 import 'package:coverage/src/util.dart';
 import 'package:path/path.dart' as p;
 import 'package:test/test.dart';

 import 'test_util.dart';

 final _isolateLibPath = p.join('test', 'test_files', 'test_app_isolate.dart');
 final _collectAppPath = p.join('bin', 'collect_coverage.dart');

 final _sampleAppFileUri = p.toUri(p.absolute(testAppPath)).toString();
 final _isolateLibFileUri = p.toUri(p.absolute(_isolateLibPath)).toString();

 void main() {
   test('collect_coverage', () async {
     final resultString = await _getCoverageResult();

     // analyze the output json
     final jsonResult = json.decode(resultString) as Map<String, dynamic>;

     expect(jsonResult.keys, unorderedEquals(<String>['type', 'coverage']));
     expect(jsonResult, containsPair('type', 'CodeCoverage'));

     final coverage = jsonResult['coverage'] as List;
     expect(coverage, isNotEmpty);

     final sources = coverage.fold<Map<String, dynamic>>(<String, dynamic>{},
         (Map<String, dynamic> map, dynamic value) {
       final sourceUri = value['source'] as String;
       map.putIfAbsent(sourceUri, () => <Map>[]).add(value);
       return map;
     });

     for (var sampleCoverageData in sources[_sampleAppFileUri]) {
       expect(sampleCoverageData['hits'], isNotNull);
     }

     for (var sampleCoverageData in sources[_isolateLibFileUri]) {
       expect(sampleCoverageData['hits'], isNotEmpty);
     }
   });

   test('createHitmap returns a sorted hitmap', () async {
     final coverage = [
       {
         'source': 'foo',
         'script': '{type: @Script, fixedId: true, '
             'id: bar.dart, uri: bar.dart, _kind: library}',
         'hits': [
           45,
           1,
           46,
           1,
           49,
           0,
           50,
           0,
           15,
           1,
           16,
           2,
           17,
           2,
         ]
       }
     ];
     // ignore: deprecated_member_use_from_same_package
     final hitMap = await createHitmap(
       coverage.cast<Map<String, dynamic>>(),
     );
     final expectedHits = {15: 1, 16: 2, 17: 2, 45: 1, 46: 1, 49: 0, 50: 0};
     expect(hitMap['foo'], expectedHits);
   });

   test('HitMap.parseJson returns a sorted hitmap', () async {
     final coverage = [
       {
         'source': 'foo',
         'script': '{type: @Script, fixedId: true, '
             'id: bar.dart, uri: bar.dart, _kind: library}',
         'hits': [
           45,
           1,
           46,
           1,
           49,
           0,
           50,
           0,
           15,
           1,
           16,
           2,
           17,
           2,
         ]
       }
     ];
     final hitMap = await HitMap.parseJson(
       coverage.cast<Map<String, dynamic>>(),
     );
     final expectedHits = {15: 1, 16: 2, 17: 2, 45: 1, 46: 1, 49: 0, 50: 0};
     expect(hitMap['foo']?.lineHits, expectedHits);
   });

   test('HitMap.parseJson', () async {
     final resultString = await _collectCoverage(true, true);
     final jsonResult = json.decode(resultString) as Map<String, dynamic>;
     final coverage = jsonResult['coverage'] as List;
     final hitMap = await HitMap.parseJson(
       coverage.cast<Map<String, dynamic>>(),
     );
     expect(hitMap, contains(_sampleAppFileUri));

     final isolateFile = hitMap[_isolateLibFileUri];
     final expectedHits = {
       11: 1,
       12: 1,
       13: 1,
       15: 0,
       19: 1,
       23: 1,
       24: 2,
       28: 1,
       29: 1,
       30: 1,
       32: 0,
       38: 1,
       39: 1,
       41: 1,
       42: 3,
       43: 1,
       44: 3,
       45: 1,
       48: 1,
       49: 1,
       51: 1,
       54: 1,
       55: 1,
       56: 1,
       59: 1,
       60: 1,
       62: 1,
       63: 1,
       64: 1,
       66: 1,
       67: 1,
       68: 1
     };
     if (Platform.version.startsWith('1.')) {
       // Dart VMs prior to 2.0.0-dev.5.0 contain a bug that emits coverage on the
       // closing brace of async function blocks.
       // See: https://github.com/dart-lang/coverage/issues/196
       expectedHits[23] = 0;
     } else {
       // Dart VMs version 2.0.0-dev.6.0 mark the opening brace of a function as
       // coverable.
       expectedHits[11] = 1;
       expectedHits[28] = 1;
       expectedHits[38] = 1;
       expectedHits[42] = 3;
     }
     expect(isolateFile?.lineHits, expectedHits);
     expect(isolateFile?.funcHits, {11: 1, 19: 1, 21: 0, 23: 1, 28: 1, 38: 1});
     expect(isolateFile?.funcNames, {
       11: 'fooSync',
       19: 'BarClass.BarClass',
       21: 'BarClass.x=',
       23: 'BarClass.baz',
       28: 'fooAsync',
       38: 'isolateTask'
     });
     expect(isolateFile?.branchHits,
         {11: 1, 12: 1, 15: 0, 19: 1, 23: 1, 28: 1, 32: 0, 38: 1, 42: 1});
   }, skip: !platformVersionCheck(2, 17));

   test('HitMap.parseJson, old VM without branch coverage', () async {
     final resultString = await _collectCoverage(true, true);
     final jsonResult = json.decode(resultString) as Map<String, dynamic>;
     final coverage = jsonResult['coverage'] as List;
     final hitMap = await HitMap.parseJson(
       coverage.cast<Map<String, dynamic>>(),
     );
     expect(hitMap, contains(_sampleAppFileUri));

     final isolateFile = hitMap[_isolateLibFileUri];
     final expectedHits = {
       11: 1,
       12: 1,
       13: 1,
       15: 0,
       19: 1,
       23: 1,
       24: 2,
       28: 1,
       29: 1,
       30: 1,
       32: 0,
       38: 1,
       39: 1,
       41: 1,
       42: 3,
       43: 1,
       44: 3,
       45: 1,
       48: 1,
       49: 1,
       51: 1,
       54: 1,
       55: 1,
       56: 1,
       59: 1,
       60: 1,
       62: 1,
       63: 1,
       64: 1,
       66: 1,
       67: 1,
       68: 1
     };
     if (Platform.version.startsWith('1.')) {
       // Dart VMs prior to 2.0.0-dev.5.0 contain a bug that emits coverage on the
       // closing brace of async function blocks.
       // See: https://github.com/dart-lang/coverage/issues/196
       expectedHits[23] = 0;
     } else {
       // Dart VMs version 2.0.0-dev.6.0 mark the opening brace of a function as
       // coverable.
       expectedHits[11] = 1;
       expectedHits[28] = 1;
       expectedHits[38] = 1;
       expectedHits[42] = 3;
     }
     expect(isolateFile?.lineHits, expectedHits);
     expect(isolateFile?.funcHits, {11: 1, 19: 1, 21: 0, 23: 1, 28: 1, 38: 1});
     expect(isolateFile?.funcNames, {
       11: 'fooSync',
       19: 'BarClass.BarClass',
       21: 'BarClass.x=',
       23: 'BarClass.baz',
       28: 'fooAsync',
       38: 'isolateTask'
     });
   }, skip: platformVersionCheck(2, 17));

   test('parseCoverage', () async {
     final tempDir = await Directory.systemTemp.createTemp('coverage.test.');

     try {
       final outputFile = File(p.join(tempDir.path, 'coverage.json'));

       final coverageResults = await _getCoverageResult();
       await outputFile.writeAsString(coverageResults, flush: true);

       // ignore: deprecated_member_use_from_same_package
       final parsedResult = await parseCoverage([outputFile], 1);

       expect(parsedResult, contains(_sampleAppFileUri));
       expect(parsedResult, contains(_isolateLibFileUri));
     } finally {
       await tempDir.delete(recursive: true);
     }
   });

   test('HitMap.parseFiles', () async {
     final tempDir = await Directory.systemTemp.createTemp('coverage.test.');

     try {
       final outputFile = File(p.join(tempDir.path, 'coverage.json'));

       final coverageResults = await _getCoverageResult();
       await outputFile.writeAsString(coverageResults, flush: true);

       final parsedResult = await HitMap.parseFiles([outputFile]);

       expect(parsedResult, contains(_sampleAppFileUri));
       expect(parsedResult, contains(_isolateLibFileUri));
     } finally {
       await tempDir.delete(recursive: true);
     }
   });

   test('HitMap.parseFiles with packagesPath and checkIgnoredLines', () async {
     final tempDir = await Directory.systemTemp.createTemp('coverage.test.');

     try {
       final outputFile = File(p.join(tempDir.path, 'coverage.json'));

       final coverageResults = await _getCoverageResult();
       await outputFile.writeAsString(coverageResults, flush: true);

       final parsedResult = await HitMap.parseFiles([outputFile],
           packagesPath: '.dart_tool/package_config.json',
           checkIgnoredLines: true);

       // This file has ignore:coverage-file.
       expect(parsedResult, isNot(contains(_sampleAppFileUri)));
       expect(parsedResult, contains(_isolateLibFileUri));
     } finally {
       await tempDir.delete(recursive: true);
     }
   });

   test('mergeHitmaps', () {
     final resultMap = <String, Map<int, int>>{
       "foo.dart": {10: 2, 20: 0},
       "bar.dart": {10: 3, 20: 1, 30: 0},
     };
     final newMap = <String, Map<int, int>>{
       "bar.dart": {10: 2, 20: 0, 40: 3},
       "baz.dart": {10: 1, 20: 0, 30: 1},
     };
     // ignore: deprecated_member_use_from_same_package
     mergeHitmaps(newMap, resultMap);
     expect(resultMap, <String, Map<int, int>>{
       "foo.dart": {10: 2, 20: 0},
       "bar.dart": {10: 5, 20: 1, 30: 0, 40: 3},
       "baz.dart": {10: 1, 20: 0, 30: 1},
     });
   });

   test('FileHitMaps.merge', () {
     final resultMap = <String, HitMap>{
       "foo.dart":
           HitMap({10: 2, 20: 0}, {15: 0, 25: 1}, {15: "bobble", 25: "cobble"}),
       "bar.dart": HitMap(
           {10: 3, 20: 1, 30: 0}, {15: 5, 25: 0}, {15: "gobble", 25: "wobble"}),
     };
     final newMap = <String, HitMap>{
       "bar.dart": HitMap(
           {10: 2, 20: 0, 40: 3}, {15: 1, 35: 4}, {15: "gobble", 35: "dobble"}),
       "baz.dart": HitMap(
           {10: 1, 20: 0, 30: 1}, {15: 0, 25: 2}, {15: "lobble", 25: "zobble"}),
     };
     resultMap.merge(newMap);
     expect(resultMap["foo.dart"]?.lineHits, <int, int>{10: 2, 20: 0});
     expect(resultMap["foo.dart"]?.funcHits, <int, int>{15: 0, 25: 1});
     expect(resultMap["foo.dart"]?.funcNames,
         <int, String>{15: "bobble", 25: "cobble"});
     expect(resultMap["bar.dart"]?.lineHits,
         <int, int>{10: 5, 20: 1, 30: 0, 40: 3});
     expect(resultMap["bar.dart"]?.funcHits, <int, int>{15: 6, 25: 0, 35: 4});
     expect(resultMap["bar.dart"]?.funcNames,
         <int, String>{15: "gobble", 25: "wobble", 35: "dobble"});
     expect(resultMap["baz.dart"]?.lineHits, <int, int>{10: 1, 20: 0, 30: 1});
     expect(resultMap["baz.dart"]?.funcHits, <int, int>{15: 0, 25: 2});
     expect(resultMap["baz.dart"]?.funcNames,
         <int, String>{15: "lobble", 25: "zobble"});
   });
 }

 String? _coverageData;

 Future<String> _getCoverageResult() async =>
     _coverageData ??= await _collectCoverage(false, false);

 Future<String> _collectCoverage(
     bool functionCoverage, bool branchCoverage) async {
   expect(FileSystemEntity.isFileSync(testAppPath), isTrue);

   final openPort = await getOpenPort();

   // Run the sample app with the right flags.
   final sampleProcess = await runTestApp(openPort);

   // Capture the VM service URI.
   final serviceUriCompleter = Completer<Uri>();
   sampleProcess.stdout
       .transform(utf8.decoder)
       .transform(LineSplitter())
       .listen((line) {
     if (!serviceUriCompleter.isCompleted) {
       final serviceUri = extractVMServiceUri(line);
       if (serviceUri != null) {
         serviceUriCompleter.complete(serviceUri);
       }
     }
   });
   final serviceUri = await serviceUriCompleter.future;

   // Run the collection tool.
   // TODO: need to get all of this functionality in the lib
   final toolResult = await Process.run(Platform.resolvedExecutable, [
     _collectAppPath,
     if (functionCoverage) '--function-coverage',
     if (branchCoverage) '--branch-coverage',
     '--uri',
     '$serviceUri',
     '--resume-isolates',
     '--wait-paused'
   ]).timeout(timeout, onTimeout: () {
     throw 'We timed out waiting for the tool to finish.';
   });

   if (toolResult.exitCode != 0) {
     print(toolResult.stdout);
     print(toolResult.stderr);
     fail('Tool failed with exit code ${toolResult.exitCode}.');
   }

   await sampleProcess.exitCode;
   await sampleProcess.stderr.drain();

   return toolResult.stdout as String;
 }
	// 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.

	@Retry(3)
	import 'dart:async';
	import 'dart:convert' show json, LineSplitter, utf8;
	import 'dart:io';

	import 'package:coverage/coverage.dart';
	import 'package:coverage/src/util.dart';
	import 'package:path/path.dart' as p;
	import 'package:test/test.dart';

	import 'test_util.dart';

	final _isolateLibPath = p.join('test', 'test_files', 'test_app_isolate.dart');
	final _collectAppPath = p.join('bin', 'collect_coverage.dart');

	final _sampleAppFileUri = p.toUri(p.absolute(testAppPath)).toString();
	final _isolateLibFileUri = p.toUri(p.absolute(_isolateLibPath)).toString();

	void main() {
	test('collect_coverage', () async {
	final resultString = await _getCoverageResult();

	// analyze the output json
	final jsonResult = json.decode(resultString) as Map<String, dynamic>;

	expect(jsonResult.keys, unorderedEquals(<String>['type', 'coverage']));
	expect(jsonResult, containsPair('type', 'CodeCoverage'));

	final coverage = jsonResult['coverage'] as List;
	expect(coverage, isNotEmpty);

	final sources = coverage.fold<Map<String, dynamic>>(<String, dynamic>{},
	(Map<String, dynamic> map, dynamic value) {
	final sourceUri = value['source'] as String;
	map.putIfAbsent(sourceUri, () => <Map>[]).add(value);
	return map;
	});

	for (var sampleCoverageData in sources[_sampleAppFileUri]) {
	expect(sampleCoverageData['hits'], isNotNull);
	}

	for (var sampleCoverageData in sources[_isolateLibFileUri]) {
	expect(sampleCoverageData['hits'], isNotEmpty);
	}
	});

	test('createHitmap returns a sorted hitmap', () async {
	final coverage = [
	{
	'source': 'foo',
	'script': '{type: @Script, fixedId: true, '
	'id: bar.dart, uri: bar.dart, _kind: library}',
	'hits': [
	45,
	1,
	46,
	1,
	49,
	0,
	50,
	0,
	15,
	1,
	16,
	2,
	17,
	2,
	]
	}
	];
	// ignore: deprecated_member_use_from_same_package
	final hitMap = await createHitmap(
	coverage.cast<Map<String, dynamic>>(),
	);
	final expectedHits = {15: 1, 16: 2, 17: 2, 45: 1, 46: 1, 49: 0, 50: 0};
	expect(hitMap['foo'], expectedHits);
	});

	test('HitMap.parseJson returns a sorted hitmap', () async {
	final coverage = [
	{
	'source': 'foo',
	'script': '{type: @Script, fixedId: true, '
	'id: bar.dart, uri: bar.dart, _kind: library}',
	'hits': [
	45,
	1,
	46,
	1,
	49,
	0,
	50,
	0,
	15,
	1,
	16,
	2,
	17,
	2,
	]
	}
	];
	final hitMap = await HitMap.parseJson(
	coverage.cast<Map<String, dynamic>>(),
	);
	final expectedHits = {15: 1, 16: 2, 17: 2, 45: 1, 46: 1, 49: 0, 50: 0};
	expect(hitMap['foo']?.lineHits, expectedHits);
	});

	test('HitMap.parseJson', () async {
	final resultString = await _collectCoverage(true, true);
	final jsonResult = json.decode(resultString) as Map<String, dynamic>;
	final coverage = jsonResult['coverage'] as List;
	final hitMap = await HitMap.parseJson(
	coverage.cast<Map<String, dynamic>>(),
	);
	expect(hitMap, contains(_sampleAppFileUri));

	final isolateFile = hitMap[_isolateLibFileUri];
	final expectedHits = {
	11: 1,
	12: 1,
	13: 1,
	15: 0,
	19: 1,
	23: 1,
	24: 2,
	28: 1,
	29: 1,
	30: 1,
	32: 0,
	38: 1,
	39: 1,
	41: 1,
	42: 3,
	43: 1,
	44: 3,
	45: 1,
	48: 1,
	49: 1,
	51: 1,
	54: 1,
	55: 1,
	56: 1,
	59: 1,
	60: 1,
	62: 1,
	63: 1,
	64: 1,
	66: 1,
	67: 1,
	68: 1
	};
	if (Platform.version.startsWith('1.')) {
	// Dart VMs prior to 2.0.0-dev.5.0 contain a bug that emits coverage on the
	// closing brace of async function blocks.
	// See: https://github.com/dart-lang/coverage/issues/196
	expectedHits[23] = 0;
	} else {
	// Dart VMs version 2.0.0-dev.6.0 mark the opening brace of a function as
	// coverable.
	expectedHits[11] = 1;
	expectedHits[28] = 1;
	expectedHits[38] = 1;
	expectedHits[42] = 3;
	}
	expect(isolateFile?.lineHits, expectedHits);
	expect(isolateFile?.funcHits, {11: 1, 19: 1, 21: 0, 23: 1, 28: 1, 38: 1});
	expect(isolateFile?.funcNames, {
	11: 'fooSync',
	19: 'BarClass.BarClass',
	21: 'BarClass.x=',
	23: 'BarClass.baz',
	28: 'fooAsync',
	38: 'isolateTask'
	});
	expect(isolateFile?.branchHits,
	{11: 1, 12: 1, 15: 0, 19: 1, 23: 1, 28: 1, 32: 0, 38: 1, 42: 1});
	}, skip: !platformVersionCheck(2, 17));

	test('HitMap.parseJson, old VM without branch coverage', () async {
	final resultString = await _collectCoverage(true, true);
	final jsonResult = json.decode(resultString) as Map<String, dynamic>;
	final coverage = jsonResult['coverage'] as List;
	final hitMap = await HitMap.parseJson(
	coverage.cast<Map<String, dynamic>>(),
	);
	expect(hitMap, contains(_sampleAppFileUri));

	final isolateFile = hitMap[_isolateLibFileUri];
	final expectedHits = {
	11: 1,
	12: 1,
	13: 1,
	15: 0,
	19: 1,
	23: 1,
	24: 2,
	28: 1,
	29: 1,
	30: 1,
	32: 0,
	38: 1,
	39: 1,
	41: 1,
	42: 3,
	43: 1,
	44: 3,
	45: 1,
	48: 1,
	49: 1,
	51: 1,
	54: 1,
	55: 1,
	56: 1,
	59: 1,
	60: 1,
	62: 1,
	63: 1,
	64: 1,
	66: 1,
	67: 1,
	68: 1
	};
	if (Platform.version.startsWith('1.')) {
	// Dart VMs prior to 2.0.0-dev.5.0 contain a bug that emits coverage on the
	// closing brace of async function blocks.
	// See: https://github.com/dart-lang/coverage/issues/196
	expectedHits[23] = 0;
	} else {
	// Dart VMs version 2.0.0-dev.6.0 mark the opening brace of a function as
	// coverable.
	expectedHits[11] = 1;
	expectedHits[28] = 1;
	expectedHits[38] = 1;
	expectedHits[42] = 3;
	}
	expect(isolateFile?.lineHits, expectedHits);
	expect(isolateFile?.funcHits, {11: 1, 19: 1, 21: 0, 23: 1, 28: 1, 38: 1});
	expect(isolateFile?.funcNames, {
	11: 'fooSync',
	19: 'BarClass.BarClass',
	21: 'BarClass.x=',
	23: 'BarClass.baz',
	28: 'fooAsync',
	38: 'isolateTask'
	});
	}, skip: platformVersionCheck(2, 17));

	test('parseCoverage', () async {
	final tempDir = await Directory.systemTemp.createTemp('coverage.test.');

	try {
	final outputFile = File(p.join(tempDir.path, 'coverage.json'));

	final coverageResults = await _getCoverageResult();
	await outputFile.writeAsString(coverageResults, flush: true);

	// ignore: deprecated_member_use_from_same_package
	final parsedResult = await parseCoverage([outputFile], 1);

	expect(parsedResult, contains(_sampleAppFileUri));
	expect(parsedResult, contains(_isolateLibFileUri));
	} finally {
	await tempDir.delete(recursive: true);
	}
	});

	test('HitMap.parseFiles', () async {
	final tempDir = await Directory.systemTemp.createTemp('coverage.test.');

	try {
	final outputFile = File(p.join(tempDir.path, 'coverage.json'));

	final coverageResults = await _getCoverageResult();
	await outputFile.writeAsString(coverageResults, flush: true);

	final parsedResult = await HitMap.parseFiles([outputFile]);

	expect(parsedResult, contains(_sampleAppFileUri));
	expect(parsedResult, contains(_isolateLibFileUri));
	} finally {
	await tempDir.delete(recursive: true);
	}
	});

	test('HitMap.parseFiles with packagesPath and checkIgnoredLines', () async {
	final tempDir = await Directory.systemTemp.createTemp('coverage.test.');

	try {
	final outputFile = File(p.join(tempDir.path, 'coverage.json'));

	final coverageResults = await _getCoverageResult();
	await outputFile.writeAsString(coverageResults, flush: true);

	final parsedResult = await HitMap.parseFiles([outputFile],
	packagesPath: '.dart_tool/package_config.json',
	checkIgnoredLines: true);

	// This file has ignore:coverage-file.
	expect(parsedResult, isNot(contains(_sampleAppFileUri)));
	expect(parsedResult, contains(_isolateLibFileUri));
	} finally {
	await tempDir.delete(recursive: true);
	}
	});

	test('mergeHitmaps', () {
	final resultMap = <String, Map<int, int>>{
	"foo.dart": {10: 2, 20: 0},
	"bar.dart": {10: 3, 20: 1, 30: 0},
	};
	final newMap = <String, Map<int, int>>{
	"bar.dart": {10: 2, 20: 0, 40: 3},
	"baz.dart": {10: 1, 20: 0, 30: 1},
	};
	// ignore: deprecated_member_use_from_same_package
	mergeHitmaps(newMap, resultMap);
	expect(resultMap, <String, Map<int, int>>{
	"foo.dart": {10: 2, 20: 0},
	"bar.dart": {10: 5, 20: 1, 30: 0, 40: 3},
	"baz.dart": {10: 1, 20: 0, 30: 1},
	});
	});

	test('FileHitMaps.merge', () {
	final resultMap = <String, HitMap>{
	"foo.dart":
	HitMap({10: 2, 20: 0}, {15: 0, 25: 1}, {15: "bobble", 25: "cobble"}),
	"bar.dart": HitMap(
	{10: 3, 20: 1, 30: 0}, {15: 5, 25: 0}, {15: "gobble", 25: "wobble"}),
	};
	final newMap = <String, HitMap>{
	"bar.dart": HitMap(
	{10: 2, 20: 0, 40: 3}, {15: 1, 35: 4}, {15: "gobble", 35: "dobble"}),
	"baz.dart": HitMap(
	{10: 1, 20: 0, 30: 1}, {15: 0, 25: 2}, {15: "lobble", 25: "zobble"}),
	};
	resultMap.merge(newMap);
	expect(resultMap["foo.dart"]?.lineHits, <int, int>{10: 2, 20: 0});
	expect(resultMap["foo.dart"]?.funcHits, <int, int>{15: 0, 25: 1});
	expect(resultMap["foo.dart"]?.funcNames,
	<int, String>{15: "bobble", 25: "cobble"});
	expect(resultMap["bar.dart"]?.lineHits,
	<int, int>{10: 5, 20: 1, 30: 0, 40: 3});
	expect(resultMap["bar.dart"]?.funcHits, <int, int>{15: 6, 25: 0, 35: 4});
	expect(resultMap["bar.dart"]?.funcNames,
	<int, String>{15: "gobble", 25: "wobble", 35: "dobble"});
	expect(resultMap["baz.dart"]?.lineHits, <int, int>{10: 1, 20: 0, 30: 1});
	expect(resultMap["baz.dart"]?.funcHits, <int, int>{15: 0, 25: 2});
	expect(resultMap["baz.dart"]?.funcNames,
	<int, String>{15: "lobble", 25: "zobble"});
	});
	}

	String? _coverageData;

	Future<String> _getCoverageResult() async =>
	_coverageData ??= await _collectCoverage(false, false);

	Future<String> _collectCoverage(
	bool functionCoverage, bool branchCoverage) async {
	expect(FileSystemEntity.isFileSync(testAppPath), isTrue);

	final openPort = await getOpenPort();

	// Run the sample app with the right flags.
	final sampleProcess = await runTestApp(openPort);

	// Capture the VM service URI.
	final serviceUriCompleter = Completer<Uri>();
	sampleProcess.stdout
	.transform(utf8.decoder)
	.transform(LineSplitter())
	.listen((line) {
	if (!serviceUriCompleter.isCompleted) {
	final serviceUri = extractVMServiceUri(line);
	if (serviceUri != null) {
	serviceUriCompleter.complete(serviceUri);
	}
	}
	});
	final serviceUri = await serviceUriCompleter.future;

	// Run the collection tool.
	// TODO: need to get all of this functionality in the lib
	final toolResult = await Process.run(Platform.resolvedExecutable, [
	_collectAppPath,
	if (functionCoverage) '--function-coverage',
	if (branchCoverage) '--branch-coverage',
	'--uri',
	'$serviceUri',
	'--resume-isolates',
	'--wait-paused'
	]).timeout(timeout, onTimeout: () {
	throw 'We timed out waiting for the tool to finish.';
	});

	if (toolResult.exitCode != 0) {
	print(toolResult.stdout);
	print(toolResult.stderr);
	fail('Tool failed with exit code ${toolResult.exitCode}.');
	}

	await sampleProcess.exitCode;
	await sampleProcess.stderr.drain();

	return toolResult.stdout as String;
	}