Move tests, create makefile action to run tests on examples (#433)

* Move tests, create makefile action to run tests on examples

* Correct import file for html files

* Build environment for tests

* Fix the CI

* rearrange CI

* fix find cmd and make sure we don't delete the folder implicitly

* more rearranging

* fix folder permissions and custom sed for subfolders

* add toga wheels files

* re-add missing file

* mirror latest changes in alpha ci

* fix find cmd

* try different fix for find

* remove redundant build

Co-authored-by: mariana <marianameireles@protonmail.com>
Co-authored-by: pww217 <pwilson@anaconda.com>
Co-authored-by: Fabio Pliger <fabio.pliger@gmail.com>

examples/todo.py

@@ -0,0 +1,53 @@
+from datetime import datetime as dt
+
+from utils import add_class, remove_class
+
+tasks = []
+
+# define the task template that will be use to render new templates to the page
+task_template = Element("task-template").select(".task", from_content=True)
+task_list = Element("list-tasks-container")
+new_task_content = Element("new-task-content")
+
+
+def add_task(*ags, **kws):
+    # ignore empty task
+    if not new_task_content.element.value:
+        return None
+
+    # create task
+    task_id = f"task-{len(tasks)}"
+    task = {
+        "id": task_id,
+        "content": new_task_content.element.value,
+        "done": False,
+        "created_at": dt.now(),
+    }
+
+    tasks.append(task)
+
+    # add the task element to the page as new node in the list by cloning from a
+    # template
+    task_html = task_template.clone(task_id, to=task_list)
+    task_html_content = task_html.select("p")
+    task_html_content.element.innerText = task["content"]
+    task_html_check = task_html.select("input")
+    task_list.element.appendChild(task_html.element)
+
+    def check_task(evt=None):
+        task["done"] = not task["done"]
+        if task["done"]:
+            add_class(task_html_content, "line-through")
+        else:
+            remove_class(task_html_content, "line-through")
+
+    new_task_content.clear()
+    task_html_check.element.onclick = check_task
+
+
+def add_task_event(e):
+    if e.key == "Enter":
+        add_task()
+
+
+new_task_content.element.onkeypress = add_task_event