Add another test for FlattenedNotes

test/flattened_notes_folder_large_test.dart

@@ -0,0 +1,54 @@
+import 'dart:io';
+import 'dart:math';
+
+import 'package:gitjournal/core/flattened_notes_folder.dart';
+import 'package:gitjournal/core/notes_folder_fs.dart';
+import 'package:gitjournal/core/note.dart';
+import 'package:path/path.dart' as p;
+import 'package:test/test.dart';
+
+void main() {
+  group('Flattened Notes Folder Large Test', () {
+    Directory tempDir;
+    NotesFolderFS rootFolder;
+
+    setUp(() async {
+      tempDir = await Directory.systemTemp.createTemp('__flat_folder_test__');
+      print("TempDir: ${tempDir.path}");
+
+      var random = Random();
+      for (var i = 0; i < 300; i++) {
+        print("Building Note $i");
+        await _writeRandomNote(random, tempDir.path);
+      }
+
+      rootFolder = NotesFolderFS(null, tempDir.path);
+      await rootFolder.loadRecursively();
+    });
+
+    tearDown(() async {
+      print("Cleaning Up TempDir: ${tempDir.path}");
+      tempDir.deleteSync(recursive: true);
+    });
+
+    test('Should load all the notes flattened', () async {
+      var f = FlattenedNotesFolder(rootFolder);
+      expect(f.notes.length, 300);
+    });
+  });
+}
+
+Future<void> _writeRandomNote(Random random, String dirPath) async {
+  String path;
+  while (true) {
+    path = p.join(dirPath, "${random.nextInt(10000)}.md");
+    if (!File(path).existsSync()) {
+      break;
+    }
+  }
+
+  var note = Note(NotesFolderFS(null, dirPath), path);
+  note.modified = DateTime(2014, 1, 1 + (random.nextInt(2000)));
+  note.body = "p1";
+  await note.save();
+}