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flutter start should give better errors when it can't find main

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Now we suggest using -t to specify the main Dart file.

Fixes #53
This commit is contained in:
Adam Barth 2015-11-09 11:11:59 -08:00
parent 8a8bd0197c
commit 6e7f575950
2 changed files with 10 additions and 2 deletions
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10
packages/flutter_tools/lib/src/commands/start.dart
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@ -30,7 +30,7 @@ class StartCommand extends FlutterCommand {
defaultsTo: true,
help: 'Toggle Dart\'s checked mode.');
argParser.addOption('target',
defaultsTo: '.',
defaultsTo: '',
abbr: 't',
help: 'Target app path or filename to start.');
argParser.addFlag('boot',
@ -67,6 +67,14 @@ class StartCommand extends FlutterCommand {
String mainPath = target;
if (FileSystemEntity.isDirectorySync(target))
mainPath = path.join(target, 'lib', 'main.dart');
if (!FileSystemEntity.isFileSync(mainPath)) {
String message = 'Tried to run ${mainPath}, but that file does not exist.';
if (!argResults.wasParsed('target'))
message += '\nConsider using the -t option to specify that Dart file to start.';
stderr.writeln(message);
continue;
}
BuildCommand builder = new BuildCommand();
builder.inheritFromParent(this);
await builder.buildInTempDir(

2
packages/flutter_tools/test/start_test.dart
View File

@ -38,7 +38,7 @@ defineTests() {
CommandRunner runner = new CommandRunner('test_flutter', '')
..addCommand(command);
runner.run(['start']).then((int code) => expect(code, equals(0)));
runner.run(['start', '-t', 'test/start_test.dart']).then((int code) => expect(code, equals(0)));
});
test('returns 0 when iOS is connected and ready to be started', () {