fix more tests

requirements/test-env.txt

@@ -10,3 +10,6 @@ playwright
 
 # I'm not quite sure why this needs to be installed for tests with Sanic to pass
 sanic-testing
+
+# Used to generate model changes from layout update messages
+jsonpointer

src/idom/core/types.py

@@ -98,7 +98,7 @@ async def __aexit__(
 VdomChild = Union[ComponentType, "VdomDict", str]
 """A single child element of a :class:`VdomDict`"""
 
-VdomChildren = Sequence[VdomChild]
+VdomChildren = "Sequence[VdomChild]"
 """Describes a series of :class:`VdomChild` elements"""
 
 VdomAttributesAndChildren = Union[

tests/test_core/test_hooks.py

@@ -11,11 +11,11 @@
     current_hook,
     strictly_equal,
 )
-from idom.core.layout import Layout, LayoutUpdateMessage
+from idom.core.layout import Layout
 from idom.testing import DisplayFixture, HookCatcher, assert_idom_did_log, poll
 from idom.testing.logs import assert_idom_did_not_log
 from idom.utils import Ref
-from tests.tooling.common import DEFAULT_TYPE_DELAY
+from tests.tooling.common import DEFAULT_TYPE_DELAY, update_message
 
 
 async def test_must_be_rendering_in_layout_to_use_hooks():
@@ -42,30 +42,27 @@ def SimpleStatefulComponent():
 
     async with idom.Layout(sse) as layout:
         update_1 = await layout.render()
-        assert update_1 == LayoutUpdateMessage(
+        assert update_1 == update_message(
             path="",
-            old=None,
-            new={
+            model={
                 "tagName": "",
                 "children": [{"tagName": "div", "children": ["0"]}],
             },
         )
 
         update_2 = await layout.render()
-        assert update_2 == LayoutUpdateMessage(
+        assert update_2 == update_message(
             path="",
-            old=update_1.new,
-            new={
+            model={
                 "tagName": "",
                 "children": [{"tagName": "div", "children": ["1"]}],
             },
         )
 
         update_3 = await layout.render()
-        assert update_3 == LayoutUpdateMessage(
+        assert update_3 == update_message(
             path="",
-            old=update_2.new,
-            new={
+            model={
                 "tagName": "",
                 "children": [{"tagName": "div", "children": ["2"]}],
             },

tests/test_core/test_layout.py

@@ -15,14 +15,14 @@
 from idom.core.component import component
 from idom.core.hooks import use_effect, use_state
 from idom.core.layout import Layout
-from idom.core.types import LayoutEventMessage, LayoutUpdateMessage
 from idom.testing import (
     HookCatcher,
     StaticEventHandler,
     assert_idom_did_log,
     capture_idom_logs,
 )
 from idom.utils import Ref
+from tests.tooling.common import event_message, update_message
 from tests.tooling.hooks import use_force_render, use_toggle
 
 
@@ -35,14 +35,6 @@ def no_logged_errors():
                 raise record.exc_info[1]
 
 
-def event_message(target: str, *data: Any) -> LayoutEventMessage:
-    return {"type": "layout-event", "target": target, "data": data}
-
-
-def update_message(path: str, model: Any) -> LayoutUpdateMessage:
-    return {"type": "layout-update", "path": path, "model": model}
-
-
 def test_layout_repr():
     @idom.component
     def MyComponent():

tests/test_core/test_serve.py

@@ -1,23 +1,20 @@
 import asyncio
 from typing import Any, Sequence
 
+from jsonpointer import set_pointer
+
 import idom
-from idom.core.layout import Layout, LayoutEventMessage, LayoutUpdateMessage
-from idom.core.serve import LayoutUpdateMessage, serve_layout
+from idom.core.layout import Layout
+from idom.core.serve import serve_layout
+from idom.core.types import LayoutUpdateMessage
 from idom.testing import StaticEventHandler
+from tests.tooling.common import event_message
 
 
 EVENT_NAME = "onEvent"
 STATIC_EVENT_HANDLER = StaticEventHandler()
 
 
-def test_vdom_json_patch_create_from_apply_to():
-    update = LayoutUpdateMessage("", {"a": 1, "b": [1]}, {"a": 2, "b": [1, 2]})
-    patch = LayoutUpdateMessage.create_from(update)
-    result = patch.apply_to({"a": 1, "b": [1]})
-    assert result == {"a": 2, "b": [1, 2]}
-
-
 def make_send_recv_callbacks(events_to_inject):
     changes = []
 
@@ -46,7 +43,7 @@ async def recv():
 
 
 def make_events_and_expected_model():
-    events = [LayoutEventMessage(STATIC_EVENT_HANDLER.target, [])] * 4
+    events = [event_message(STATIC_EVENT_HANDLER.target)] * 4
     expected_model = {
         "tagName": "",
         "children": [
@@ -72,7 +69,12 @@ def assert_changes_produce_expected_model(
 ) -> None:
     model_from_changes = {}
     for update in changes:
-        model_from_changes = update.apply_to(model_from_changes)
+        if update["path"]:
+            model_from_changes = set_pointer(
+                model_from_changes, update["path"], update["model"]
+            )
+        else:
+            model_from_changes.update(update["model"])
     assert model_from_changes == expected_model
 
 
@@ -128,8 +130,8 @@ async def handle_event():
         )
     )
 
-    await recv_queue.put(LayoutEventMessage(blocked_handler.target, []))
+    await recv_queue.put(event_message(blocked_handler.target))
     await will_block.wait()
 
-    await recv_queue.put(LayoutEventMessage(non_blocked_handler.target, []))
+    await recv_queue.put(event_message(non_blocked_handler.target))
     await second_event_did_execute.wait()

tests/tooling/common.py

@@ -1,2 +1,15 @@
+from typing import Any
+
+from idom.core.types import LayoutEventMessage, LayoutUpdateMessage
+
+
 # see: https://github.com/microsoft/playwright-python/issues/1614
 DEFAULT_TYPE_DELAY = 100  # miliseconds
+
+
+def event_message(target: str, *data: Any) -> LayoutEventMessage:
+    return {"type": "layout-event", "target": target, "data": data}
+
+
+def update_message(path: str, model: Any) -> LayoutUpdateMessage:
+    return {"type": "layout-update", "path": path, "model": model}