Improve serialization and tests

r0x0r · r0x0r · commit c985bd135ee6 · 2024-04-18T20:56:23.000+03:00
diff --git a/tests/test_serialization.py b/tests/test_serialization.py
@@ -0,0 +1,78 @@
+
+import webview
+import json
+from .util import run_test
+import pytest
+
+test_values = [
+    ('int', 1),
+    ('string', 'test'),
+    ('null_value', None),
+    ('object', {'key1': 'value', 'key2': 420}),
+    ('array', [1, 2, 3]),
+    ('mixed', {'key1': 'value', 'key2': [ 1, 2, {'id': 2}], 'nullValue': None}),
+    ('boolean', True),
+]
+
+test_value_string = '\n'.join([ f"var {name} = {json.dumps(value)}" for name, value in test_values])
+
+HTML = f"""
+<!DOCTYPE html>
+<html>
+<head>
+
+</head>
+<body style="width: 100%; height: 100vh; display: flex;">
+
+<script>
+{test_value_string}
+var circular = {{key: "test"}}
+circular.circular = circular
+var testObject = {{id: 1}}
+var nonCircular = [testObject, testObject]
+
+var nodes = document.getElementsByTagName("div")
+</script>
+<div>1</div>
+<div style="font-family: Helvetica, Arial, sans-serif; font-size: 34px; font-style: italic; font-weight: 800; width: 100%; display: flex; justify-content; center; align-items: center;">
+<h1>THIS IS ONLY A TEST</h1>
+</h1></div>
+<div>3</div>
+</body>
+</html>
+"""
+
+def test_basic_serialization():
+    window = webview.create_window('Basic serialization test', html=HTML)
+    run_test(webview, window, serialization, debug=True)
+
+
+def test_circular_serialization():
+    window = webview.create_window('Circular reference test', html=HTML)
+    run_test(webview, window, circular_reference)
+
+
+def test_dom_serialization():
+    window = webview.create_window('DOM serialization test', html=HTML)
+    run_test(webview, window, dom_serialization, debug=True)
+
+
+def serialization(window):
+    for name, expected_value in test_values:
+        result = window.evaluate_js(name)
+        assert result == expected_value
+
+def circular_reference(window):
+    result = window.evaluate_js('circular')
+    assert result == {'key': 'test', 'circular': '[Circular Reference]'}
+
+    result = window.evaluate_js('nonCircular')
+    assert result == [{'id': 1}, {'id': 1}]
+
+
+def dom_serialization(window):
+    result = window.evaluate_js('nodes')
+    assert len(result) == 3
+    assert result[0]['innerText'] == '1'
+    assert result[1]['innerText'].strip() == 'THIS IS ONLY A TEST'
+    assert result[2]['innerText'] == '3'
diff --git a/tests/test_set_title.py b/tests/test_set_title.py
@@ -9,4 +9,7 @@ def test_set_title():
 
 
 def set_title(window):
-    window.set_title('New title')
+    assert window.title == 'Set title test'
+    window.title = 'New title'
+
+    assert window.title == 'New title'
diff --git a/tests/util.py b/tests/util.py
@@ -5,6 +5,7 @@
 import time
 import traceback
 from multiprocessing import Queue
+from typing import Any, Callable, Dict, Iterable, Optional
 from uuid import uuid4
 
 import pytest
@@ -13,11 +14,34 @@
 
 
 def run_test(
-    webview, window, thread_func=None, param=None, start_args={}, no_destroy=False, destroy_delay=0, debug=False
-):
+    webview: Any,
+    window: Any,
+    thread_func: Optional[Callable] = None,
+    param: Iterable = (),
+    start_args: Dict[str, Any] = {},
+    no_destroy: bool = False,
+    destroy_delay: float = 0,
+    debug: bool = False
+) -> None:
+    """"
+    A test running function that creates a window and runs a thread function in it. Test logic is to be placed in the
+    thread function. The function will wait for the thread function to finish and then destroy the window. If the thread
+    function raises an exception, the test will fail and the exception will be printed.
+
+    :param webview: webview module
+    :param window: window instance created with webview.create_window
+    :param thread_func: function to run in the window.
+    :param param: positional arguments to pass to the thread function
+    :param start_args: keyword arguments to pass to webview.start
+    :param no_destroy: flag indicating whether to destroy the window after the thread function finishes (default: False).
+    If set to True, the window will not be destroyed and the test will not finish until the window is closed manually.
+    :param destroy_delay: delay in seconds before destroying the window (default: 0)
+    :param debug: flag indicating whether to enable debug mode (default: False)
+
+    """
     __tracebackhide__ = True
     try:
-        queue = Queue()
+        queue: Queue = Queue()
 
         if debug:
             start_args = {**start_args, 'debug': True}
@@ -71,10 +95,11 @@ def _create_window(
 ):
     def thread():
         try:
+            logger.info('Thread started')
             take_screenshot()
             move_mouse_cocoa()
             if thread_func:
-                thread_func(window)
+                thread_func(window, *thread_param)
 
             destroy_event.set()
         except Exception as e:
@@ -86,7 +111,7 @@ def thread():
         args = (thread_param,) if thread_param else ()
         destroy_event = _destroy_window(webview, window, destroy_delay)
 
-        t = threading.Thread(target=thread, args=args)
+        t = threading.Thread(target=thread)
         t.start()
 
     webview.start(**start_args)
diff --git a/webview/js/api.py b/webview/js/api.py
@@ -115,48 +115,54 @@
             )
         }
 
-        function serialize(obj, depth=0, visited=new WeakSet()) {
+        function serialize(obj, ancestors=[]) {
             try {
                 if (obj instanceof Node) return pywebview.domJSON.toJSON(obj, { metadata: false, serialProperties: true });
                 if (obj instanceof Window) return 'Window';
 
-                if (visited.has(obj)) {
-                    return '[Circular Reference]';
+                var boundSerialize = serialize.bind(obj);
+
+                if (typeof obj !== "object" || obj === null) {
+                    return obj;
                 }
 
-                if (typeof obj === 'object' && obj !== null) {
-                    visited.add(obj);
+                while (ancestors.length > 0 && ancestors[ancestors.length - 1] !== this) {
+                    ancestors.pop();
+                }
 
-                    if (isArrayLike(obj)) {
-                        obj = tryConvertToArray(obj);
-                    }
+                if (ancestors.includes(obj)) {
+                    return "[Circular Reference]";
+                }
+                ancestors.push(obj);
 
-                    if (Array.isArray(obj)) {
-                        const arr = obj.map(value => serialize(value, depth + 1, visited));
-                        visited.delete(obj);
-                        return arr;
-                    }
+                if (isArrayLike(obj)) {
+                    obj = tryConvertToArray(obj);
+                }
 
-                    const newObj = {};
-                    for (const key in obj) {
-                        if (typeof obj === 'function') {
-                            continue;
-                        }
-                        newObj[key] = serialize(obj[key], depth + 1, visited);
+                if (Array.isArray(obj)) {
+                    const arr = obj.map(value => boundSerialize(value, ancestors));
+                    return arr;
+                }
+
+                const newObj = {};
+                for (const key in obj) {
+                    if (typeof obj === 'function') {
+                        continue;
                     }
-                    visited.delete(obj);
-                    return newObj;
+                    newObj[key] = boundSerialize(obj[key], ancestors);
                 }
+                return newObj;
 
-                return obj;
             } catch (e) {
                 console.error(e)
                 return e.toString();
             }
         }
 
-        return JSON.stringify(serialize(obj));
-    },
+      var _serialize = serialize.bind(null);
+
+      return JSON.stringify(_serialize(obj));
+  },
 
     _getNodeId: function (element) {
         if (!element) {
