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Add tests
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‎pkgs/dart_mcp_server/test/tools/flutter_launcher_test.dart‎

Lines changed: 201 additions & 0 deletions
Original file line numberDiff line numberDiff line change
@@ -197,6 +197,207 @@ void main() {
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await client.shutdown();
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},
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);
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test.test('launch_app tool fails when process exits early', () async {
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final mockProcessManager = MockProcessManager();
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mockProcessManager.addCommand(
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Command(
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[
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Platform.isWindows
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? r'C:\path\to\flutter\sdk\bin\cache\dart-sdk\bin\dart.exe'
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: '/path/to/flutter/sdk/bin/cache/dart-sdk/bin/dart',
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'language-server',
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'--protocol',
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'lsp',
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],
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stdout:
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'''Content-Length: 145\r\n\r\n{"jsonrpc":"2.0","id":0,"result":{"capabilities":{"workspace":{"workspaceFolders":{"supported":true,"changeNotifications":true}},"workspaceSymbolProvider":true}}}''',
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),
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);
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mockProcessManager.addCommand(
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Command(
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[
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Platform.isWindows
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? r'C:\path\to\flutter\sdk\bin\flutter.bat'
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: '/path/to/flutter/sdk/bin/flutter',
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'run',
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'--print-dtd',
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'--device-id',
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'test-device',
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],
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stderr: 'Something went wrong',
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exitCode: Future.value(1),
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),
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);
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final serverAndClient = await createServerAndClient(
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processManager: mockProcessManager,
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fileSystem: fileSystem,
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);
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final server = serverAndClient.server;
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final client = serverAndClient.client;
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// Initialize
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await client.initialize(
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InitializeRequest(
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protocolVersion: ProtocolVersion.latestSupported,
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capabilities: ClientCapabilities(),
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clientInfo: Implementation(name: 'test_client', version: '1.0.0'),
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),
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);
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client.notifyInitialized();
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// Call the tool
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final result = await client.callTool(
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CallToolRequest(
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name: 'launch_app',
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arguments: {'root': projectRoot, 'device': 'test-device'},
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),
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);
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test.expect(result.isError, true);
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final textOutput = result.content as List<TextContent>;
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test.expect(
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textOutput.map((context) => context.text).toList().join('\n'),
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test.stringContainsInOrder([
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'Flutter application exited with code 1 before the DTD URI was found',
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'with log output',
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'Something went wrong',
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]),
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);
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await server.shutdown();
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await client.shutdown();
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});
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test.test('stop_app tool stops a running app', () async {
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final dtdUri = 'ws://127.0.0.1:12345/abcdefg=';
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final processPid = 54321;
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final mockProcessManager = MockProcessManager();
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mockProcessManager.addCommand(
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Command(
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[
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Platform.isWindows
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? r'C:\path\to\flutter\sdk\bin\cache\dart-sdk\bin\dart.exe'
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: '/path/to/flutter/sdk/bin/cache/dart-sdk/bin/dart',
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'language-server',
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'--protocol',
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'lsp',
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],
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stdout:
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'''Content-Length: 145\r\n\r\n{"jsonrpc":"2.0","id":0,"result":{"capabilities":{"workspace":{"workspaceFolders":{"supported":true,"changeNotifications":true}},"workspaceSymbolProvider":true}}}
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''',
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),
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);
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mockProcessManager.addCommand(
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Command(
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[
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Platform.isWindows
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? r'C:\path\to\flutter\sdk\bin\flutter.bat'
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: '/path/to/flutter/sdk/bin/flutter',
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'run',
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'--print-dtd',
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'--device-id',
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'test-device',
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],
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stdout: 'The Dart Tooling Daemon is available at: $dtdUri\n',
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pid: processPid,
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),
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);
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final serverAndClient = await createServerAndClient(
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processManager: mockProcessManager,
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fileSystem: fileSystem,
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);
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final server = serverAndClient.server;
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final client = serverAndClient.client;
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// Initialize and launch the app
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await client.initialize(
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InitializeRequest(
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protocolVersion: ProtocolVersion.latestSupported,
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capabilities: ClientCapabilities(),
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clientInfo: Implementation(name: 'test_client', version: '1.0.0'),
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),
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);
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client.notifyInitialized();
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await client.callTool(
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CallToolRequest(
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name: 'launch_app',
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arguments: {'root': projectRoot, 'device': 'test-device'},
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),
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);
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// Stop the app
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final result = await client.callTool(
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CallToolRequest(name: 'stop_app', arguments: {'pid': processPid}),
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);
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test.expect(result.isError, test.isNot(true));
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test.expect(result.structuredContent, {'success': true});
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test.expect(mockProcessManager.killedPids, [processPid]);
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await server.shutdown();
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await client.shutdown();
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});
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test.test('list_devices tool returns available devices', () async {
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final mockProcessManager = MockProcessManager();
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mockProcessManager.addCommand(
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Command(
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[
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Platform.isWindows
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? r'C:\path\to\flutter\sdk\bin\cache\dart-sdk\bin\dart.exe'
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: '/path/to/flutter/sdk/bin/cache/dart-sdk/bin/dart',
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'language-server',
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'--protocol',
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'lsp',
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],
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stdout:
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'''Content-Length: 145\r\n\r\n{"jsonrpc":"2.0","id":0,"result":{"capabilities":{"workspace":{"workspaceFolders":{"supported":true,"changeNotifications":true}},"workspaceSymbolProvider":true}}}
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''',
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),
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);
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mockProcessManager.addCommand(
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Command(
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[
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Platform.isWindows
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? r'C:\path\to\flutter\sdk\bin\flutter.bat'
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: '/path/to/flutter/sdk/bin/flutter',
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'devices',
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'--machine',
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],
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stdout: jsonEncode([
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{'id': 'test-device-1'},
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{'id': 'test-device-2'},
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]),
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),
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);
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final serverAndClient = await createServerAndClient(
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processManager: mockProcessManager,
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fileSystem: fileSystem,
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);
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final server = serverAndClient.server;
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final client = serverAndClient.client;
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// Initialize
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await client.initialize(
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InitializeRequest(
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protocolVersion: ProtocolVersion.latestSupported,
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capabilities: ClientCapabilities(),
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clientInfo: Implementation(name: 'test_client', version: '1.0.0'),
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),
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);
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client.notifyInitialized();
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// List devices
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final result = await client.callTool(
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CallToolRequest(name: 'list_devices', arguments: {}),
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);
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test.expect(result.isError, test.isNot(true));
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test.expect(result.structuredContent, {
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'devices': ['test-device-1', 'test-device-2'],
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});
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await server.shutdown();
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await client.shutdown();
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});
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});
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}
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