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main_test.py
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main_test.py
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"""General testing of CEF Python."""
import unittest
# noinspection PyUnresolvedReferences
import _test_runner
from os.path import basename
from cefpython3 import cefpython as cef
import time
import base64
import sys
# To show the window for an extended period of time increase this number.
MESSAGE_LOOP_RANGE = 25 # each iteration is 0.01 sec
g_datauri_data = """
<!DOCTYPE html>
<html>
<head>
<style type="text/css">
body,html {
font-family: Arial;
font-size: 11pt;
}
</style>
<script>
function print(msg) {
console.log(msg+" [JS]");
msg = msg.replace("ok", "<b style='color:green'>ok</b>");
msg = msg.replace("error", "<b style='color:red'>error</b>");
document.getElementById("console").innerHTML += msg+"<br>";
}
window.onload = function(){
print("window.onload() ok");
// Test binding property: test_property1
if (test_property1 == "Test binding property to the 'window' object") {
print("test_property_1 ok");
} else {
throw new Error("test_property1 contains invalid string");
}
// Test binding property: test_property2
if (JSON.stringify(test_property2) == '{"key1":"Test binding property'+
' to the \\'window\\' object","key2":["Inside list",1,2]}') {
print("test_property2 ok");
} else {
throw new Error("test_property2 contains invalid value");
}
// Test binding function: test_function
test_function();
print("test_function() ok");
// Test binding external object and use of javascript<>python callbacks
external.test_callbacks(function(msg_from_python, py_callback){
if (msg_from_python == "String sent from Python") {
print("test_callbacks() ok");
} else {
throw new Error("test_callbacks(): msg_from_python contains"+
" invalid value");
}
py_callback("String sent from Javascript");
print("py_callback() ok");
});
};
</script>
</head>
<body>
<!-- FrameSourceVisitor hash = 747ef3e6011b6a61e6b3c6e54bdd2dee -->
<h1>Main test</h1>
<div id="console"></div>
</body>
</html>
"""
g_datauri = "data:text/html;base64,"+base64.b64encode(g_datauri_data.encode(
"utf-8", "replace")).decode("utf-8", "replace")
g_subtests_ran = 0
def subtest_message(message):
global g_subtests_ran
g_subtests_ran += 1
print(str(g_subtests_ran) + ". " + message)
sys.stdout.flush()
class MainTest_IsolatedTest(unittest.TestCase):
def test_main(self):
"""Main entry point."""
# All this code must run inside one single test, otherwise strange
# things happen.
print("")
print("CEF Python {ver}".format(ver=cef.__version__))
print("Python {ver}".format(ver=sys.version[:6]))
# Test initialization of CEF
cef.Initialize({
"debug": False,
"log_severity": cef.LOGSEVERITY_ERROR,
"log_file": "",
})
subtest_message("cef.Initialize() ok")
# Test global handler
global_handler = GlobalHandler(self)
cef.SetGlobalClientCallback("OnAfterCreated",
global_handler._OnAfterCreated)
subtest_message("cef.SetGlobalClientCallback() ok")
# Test creation of browser
browser = cef.CreateBrowserSync(url=g_datauri)
self.assertIsNotNone(browser, "Browser object")
subtest_message("cef.CreateBrowserSync() ok")
# Test other handlers: LoadHandler, DisplayHandler etc.
client_handlers = [LoadHandler(self), DisplayHandler(self)]
for handler in client_handlers:
browser.SetClientHandler(handler)
subtest_message("browser.SetClientHandler() ok")
# Test javascript bindings
external = External(self)
bindings = cef.JavascriptBindings(
bindToFrames=False, bindToPopups=False)
bindings.SetFunction("test_function", external.test_function)
bindings.SetProperty("test_property1", external.test_property1)
bindings.SetProperty("test_property2", external.test_property2)
bindings.SetObject("external", external)
browser.SetJavascriptBindings(bindings)
subtest_message("browser.SetJavascriptBindings() ok")
# Run message loop for 0.5 sec.
# noinspection PyTypeChecker
for i in range(MESSAGE_LOOP_RANGE):
cef.MessageLoopWork()
time.sleep(0.01)
subtest_message("cef.MessageLoopWork() ok")
# Test browser closing. Remember to clean reference.
browser.CloseBrowser(True)
del browser
subtest_message("browser.CloseBrowser() ok")
# Give it some time to close before calling shutdown.
# noinspection PyTypeChecker
for i in range(25):
cef.MessageLoopWork()
time.sleep(0.01)
# Automatic check of asserts in handlers and in external
for obj in [] + client_handlers + [global_handler, external]:
test_for_True = False # Test whether asserts are working correctly
for key, value in obj.__dict__.items():
if key == "test_for_True":
test_for_True = True
continue
if "_True" in key:
self.assertTrue(value, "Check assert: " +
obj.__class__.__name__ + "." + key)
subtest_message(obj.__class__.__name__ + "." +
key.replace("_True", "") +
" ok")
elif "_False" in key:
self.assertFalse(value, "Check assert: " +
obj.__class__.__name__ + "." + key)
subtest_message(obj.__class__.__name__ + "." +
key.replace("_False", "") +
" ok")
self.assertTrue(test_for_True)
# Test shutdown of CEF
cef.Shutdown()
subtest_message("cef.Shutdown() ok")
# Display real number of tests there were run
print("\nRan " + str(g_subtests_ran) + " sub-tests in test_main")
sys.stdout.flush()
class GlobalHandler(object):
def __init__(self, test_case):
self.test_case = test_case
# Asserts for True/False will be checked just before shutdown
self.test_for_True = True # Test whether asserts are working correctly
self.OnAfterCreated_True = False
def _OnAfterCreated(self, browser):
# For asserts that are checked automatically before shutdown its
# values should be set first, so that when other asserts fail
# (the ones called through the test_case member) they are reported
# correctly.
self.test_case.assertFalse(self.OnAfterCreated_True)
self.OnAfterCreated_True = True
self.test_case.assertEqual(browser.GetIdentifier(), 1)
class LoadHandler(object):
def __init__(self, test_case):
self.test_case = test_case
self.frame_source_visitor = None
# Asserts for True/False will be checked just before shutdown
self.test_for_True = True # Test whether asserts are working correctly
self.OnLoadStart_True = False
self.OnLoadEnd_True = False
self.FrameSourceVisitor_True = False
# self.OnLoadingStateChange_Start_True = False # FAILS
self.OnLoadingStateChange_End_True = False
def OnLoadStart(self, browser, frame):
self.test_case.assertFalse(self.OnLoadStart_True)
self.OnLoadStart_True = True
self.test_case.assertEqual(browser.GetUrl(), frame.GetUrl())
self.test_case.assertEqual(browser.GetUrl(), g_datauri)
def OnLoadEnd(self, browser, frame, http_code):
# OnLoadEnd should be called only once
self.test_case.assertFalse(self.OnLoadEnd_True)
self.OnLoadEnd_True = True
self.test_case.assertEqual(http_code, 200)
self.frame_source_visitor = FrameSourceVisitor(self, self.test_case)
frame.GetSource(self.frame_source_visitor)
browser.ExecuteJavascript(
"print('LoadHandler.OnLoadEnd() ok')")
def OnLoadingStateChange(self, browser, is_loading,
can_go_back, can_go_forward):
if is_loading:
# TODO: this test fails, looks like OnLoadingStaetChange with
# is_loading=False is being called very fast, before
# OnLoadStart and before client handler is set by calling
# browser.SetClientHandler().
# SOLUTION: allow to set OnLoadingStateChange through
# SetGlobalClientCallback similarly to _OnAfterCreated().
# self.test_case.assertFalse(self.OnLoadingStateChange_Start_True)
# self.OnLoadingStateChange_Start_True = True
pass
else:
self.test_case.assertFalse(self.OnLoadingStateChange_End_True)
self.OnLoadingStateChange_End_True = True
self.test_case.assertEqual(browser.CanGoBack(), can_go_back)
self.test_case.assertEqual(browser.CanGoForward(), can_go_forward)
class DisplayHandler(object):
def __init__(self, test_case):
self.test_case = test_case
# Asserts for True/False will be checked just before shutdown
self.test_for_True = True # Test whether asserts are working correctly
self.javascript_errors_False = False
self.OnConsoleMessage_True = False
# noinspection PyUnusedLocal
def OnConsoleMessage(self, browser, message, source, line):
if "error" in message.lower() or "uncaught" in message.lower():
self.javascript_errors_False = True
raise Exception(message)
else:
# Check whether messages from javascript are coming
self.OnConsoleMessage_True = True
subtest_message(message)
class FrameSourceVisitor(object):
"""Visitor for Frame.GetSource()."""
def __init__(self, load_handler, test_case):
self.load_handler = load_handler
self.test_case = test_case
# noinspection PyUnusedLocal
def Visit(self, value):
self.test_case.assertFalse(self.load_handler.FrameSourceVisitor_True)
self.load_handler.FrameSourceVisitor_True = True
self.test_case.assertIn("747ef3e6011b6a61e6b3c6e54bdd2dee",
g_datauri_data)
class External(object):
"""Javascript 'window.external' object."""
def __init__(self, test_case):
self.test_case = test_case
# Test binding properties to the 'window' object.
self.test_property1 = "Test binding property to the 'window' object"
self.test_property2 = {"key1": self.test_property1,
"key2": ["Inside list", 1, 2]}
# Asserts for True/False will be checked just before shutdown
self.test_for_True = True # Test whether asserts are working correctly
self.test_function_True = False
self.test_callbacks_True = False
self.py_callback_True = False
def test_function(self):
"""Test binding function to the 'window' object."""
self.test_function_True = True
def test_callbacks(self, js_callback):
"""Test both javascript and python callbacks."""
def py_callback(msg_from_js):
self.py_callback_True = True
self.test_case.assertEqual(msg_from_js,
"String sent from Javascript")
self.test_callbacks_True = True
js_callback.Call("String sent from Python", py_callback)
if __name__ == "__main__":
_test_runner.main(basename(__file__))