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# Copyright (c) Microsoft Corporation.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
import json
import math
from datetime import datetime, timezone
from typing import Any, Dict
from playwright.async_api import Page
async def test_jshandle_evaluate_work(page: Page) -> None:
window_handle = await page.evaluate_handle("window")
assert window_handle
assert (
repr(window_handle) == f"<JSHandle preview={window_handle._impl_obj._preview}>"
)
async def test_jshandle_evaluate_accept_object_handle_as_argument(page: Page) -> None:
navigator_handle = await page.evaluate_handle("navigator")
text = await page.evaluate("e => e.userAgent", navigator_handle)
assert "Mozilla" in text
async def test_jshandle_evaluate_accept_handle_to_primitive_types(page: Page) -> None:
handle = await page.evaluate_handle("5")
is_five = await page.evaluate("e => Object.is(e, 5)", handle)
assert is_five
async def test_jshandle_evaluate_accept_nested_handle(page: Page) -> None:
foo = await page.evaluate_handle('({ x: 1, y: "foo" })')
result = await page.evaluate("({ foo }) => foo", {"foo": foo})
assert result == {"x": 1, "y": "foo"}
async def test_jshandle_evaluate_accept_nested_window_handle(page: Page) -> None:
foo = await page.evaluate_handle("window")
result = await page.evaluate("({ foo }) => foo === window", {"foo": foo})
assert result
async def test_jshandle_evaluate_accept_multiple_nested_handles(page: Page) -> None:
foo = await page.evaluate_handle('({ x: 1, y: "foo" })')
bar = await page.evaluate_handle("5")
baz = await page.evaluate_handle('["baz"]')
result = await page.evaluate(
"x => JSON.stringify(x)",
{"a1": {"foo": foo}, "a2": {"bar": bar, "arr": [{"baz": baz}]}},
)
assert json.loads(result) == {
"a1": {"foo": {"x": 1, "y": "foo"}},
"a2": {"bar": 5, "arr": [{"baz": ["baz"]}]},
}
async def test_jshandle_evaluate_should_work_for_circular_objects(page: Page) -> None:
a: Dict[str, Any] = {"x": 1}
a["y"] = a
result = await page.evaluate("a => { a.y.x += 1; return a; }", a)
assert result["x"] == 2
assert result["y"]["x"] == 2
assert result == result["y"]
async def test_jshandle_evaluate_accept_same_nested_object_multiple_times(
page: Page,
) -> None:
foo = {"x": 1}
assert await page.evaluate(
"x => x", {"foo": foo, "bar": [foo], "baz": {"foo": foo}}
) == {"foo": {"x": 1}, "bar": [{"x": 1}], "baz": {"foo": {"x": 1}}}
async def test_jshandle_evaluate_accept_object_handle_to_unserializable_value(
page: Page,
) -> None:
handle = await page.evaluate_handle("() => Infinity")
assert await page.evaluate("e => Object.is(e, Infinity)", handle)
async def test_jshandle_evaluate_pass_configurable_args(page: Page) -> None:
result = await page.evaluate(
"""arg => {
if (arg.foo !== 42)
throw new Error('Not a 42');
arg.foo = 17;
if (arg.foo !== 17)
throw new Error('Not 17');
delete arg.foo;
if (arg.foo === 17)
throw new Error('Still 17');
return arg;
}""",
{"foo": 42},
)
assert result == {}
async def test_jshandle_properties_get_property(page: Page) -> None:
handle1 = await page.evaluate_handle(
"""() => ({
one: 1,
two: 2,
three: 3
})"""
)
handle2 = await handle1.get_property("two")
assert await handle2.json_value() == 2
async def test_jshandle_properties_work_with_undefined_null_and_empty(
page: Page,
) -> None:
handle = await page.evaluate_handle(
"""() => ({
undefined: undefined,
null: null,
})"""
)
undefined_handle = await handle.get_property("undefined")
assert await undefined_handle.json_value() is None
null_handle = await handle.get_property("null")
assert await null_handle.json_value() is None
empty_handle = await handle.get_property("empty")
assert await empty_handle.json_value() is None
async def test_jshandle_properties_work_with_unserializable_values(page: Page) -> None:
handle = await page.evaluate_handle(
"""() => ({
infinity: Infinity,
negInfinity: -Infinity,
nan: NaN,
negZero: -0
})"""
)
infinity_handle = await handle.get_property("infinity")
assert await infinity_handle.json_value() == float("inf")
neg_infinity_handle = await handle.get_property("negInfinity")
assert await neg_infinity_handle.json_value() == float("-inf")
nan_handle = await handle.get_property("nan")
assert math.isnan(await nan_handle.json_value()) is True
neg_zero_handle = await handle.get_property("negZero")
assert await neg_zero_handle.json_value() == float("-0")
async def test_jshandle_properties_get_properties(page: Page) -> None:
handle = await page.evaluate_handle('() => ({ foo: "bar" })')
properties = await handle.get_properties()
assert "foo" in properties
foo = properties["foo"]
assert await foo.json_value() == "bar"
async def test_jshandle_properties_return_empty_map_for_non_objects(page: Page) -> None:
handle = await page.evaluate_handle("123")
properties = await handle.get_properties()
assert properties == {}
async def test_jshandle_json_value_work(page: Page) -> None:
handle = await page.evaluate_handle('() => ({foo: "bar"})')
json = await handle.json_value()
assert json == {"foo": "bar"}
async def test_jshandle_json_value_work_with_dates(page: Page) -> None:
handle = await page.evaluate_handle('() => new Date("2020-05-27T01:31:38.506Z")')
json = await handle.json_value()
assert json == datetime.fromisoformat("2020-05-27T01:31:38.506").replace(
tzinfo=timezone.utc
)
async def test_jshandle_json_value_should_work_for_circular_object(page: Page) -> None:
handle = await page.evaluate_handle("const a = {}; a.b = a; a")
a: Dict[str, Any] = {}
a["b"] = a
result = await handle.json_value()
# Node test looks like the below, but assert isn't smart enough to handle this:
# assert await handle.json_value() == a
assert result["b"] == result
async def test_jshandle_as_element_work(page: Page) -> None:
handle = await page.evaluate_handle("document.body")
element = handle.as_element()
assert element is not None
async def test_jshandle_as_element_return_none_for_non_elements(page: Page) -> None:
handle = await page.evaluate_handle("2")
element = handle.as_element()
assert element is None
async def test_jshandle_to_string_work_for_primitives(page: Page) -> None:
number_handle = await page.evaluate_handle("2")
assert str(number_handle) == "2"
string_handle = await page.evaluate_handle('"a"')
assert str(string_handle) == "a"
async def test_jshandle_to_string_work_for_complicated_objects(
page: Page, browser_name: str
) -> None:
handle = await page.evaluate_handle("window")
if browser_name != "firefox":
assert str(handle) == "Window"
else:
assert str(handle) == "JSHandle@object"
async def test_jshandle_to_string_work_for_promises(page: Page) -> None:
handle = await page.evaluate_handle("({b: Promise.resolve(123)})")
b_handle = await handle.get_property("b")
assert str(b_handle) == "Promise"
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