Read works

test/all_test.dart

@@ -20,6 +20,7 @@ main() async {
     var output = await service.create(input);
     expect(input, output);
   });
+
   test('create without id', () async {
     var input = {'bar': 'baz'};
     var output = await service.create(input);
@@ -27,4 +28,10 @@ main() async {
     expect(output.keys, contains('id'));
     expect(output, containsPair('bar', 'baz'));
   });
+
+  test('read', () async {
+    var id = 'poobah${new DateTime.now().millisecondsSinceEpoch}';
+    var input = await service.create({'id': id, 'bar': 'baz'});
+    expect(await service.read(id), input);
+  });
 }