Refactor threads file structure

tests/threads/test_page.py

@@ -0,0 +1,22 @@
+import fbchat
+from fbchat import PageData
+
+
+def test_page_from_graphql(session):
+    data = {
+        "id": "123456",
+        "name": "Some school",
+        "profile_picture": {"uri": "https://scontent-arn2-1.xx.fbcdn.net/v/..."},
+        "url": "https://www.facebook.com/some-school/",
+        "category_type": "SCHOOL",
+        "city": None,
+    }
+    assert PageData(
+        session=session,
+        id="123456",
+        photo=fbchat.Image(url="https://scontent-arn2-1.xx.fbcdn.net/v/..."),
+        name="Some school",
+        url="https://www.facebook.com/some-school/",
+        city=None,
+        category="SCHOOL",
+    ) == PageData._from_graphql(session, data)