File: test_page_evaluate.py

package info (click to toggle)
python-playwright 1.55.0%2Bds-2
  • links: PTS, VCS
  • area: main
  • in suites: forky, sid
  • size: 5,728 kB
  • sloc: python: 53,655; javascript: 383; sh: 216; makefile: 6
file content (355 lines) | stat: -rw-r--r-- 11,315 bytes parent folder | download
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
# 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 math
from datetime import datetime, timedelta, timezone
from typing import Optional
from urllib.parse import ParseResult, urlparse

from playwright.async_api import Error, Page


async def test_evaluate_work(page: Page) -> None:
    result = await page.evaluate("7 * 3")
    assert result == 21


async def test_evaluate_return_none_for_null(page: Page) -> None:
    result = await page.evaluate("a => a", None)
    assert result is None


async def test_evaluate_transfer_nan(page: Page) -> None:
    result = await page.evaluate("a => a", float("nan"))
    assert math.isnan(result)


async def test_evaluate_transfer_neg_zero(page: Page) -> None:
    result = await page.evaluate("a => a", -0)
    assert result == float("-0")


async def test_evaluate_transfer_infinity(page: Page) -> None:
    result = await page.evaluate("a => a", float("Infinity"))
    assert result == float("Infinity")


async def test_evaluate_transfer_neg_infinity(page: Page) -> None:
    result = await page.evaluate("a => a", float("-Infinity"))
    assert result == float("-Infinity")


async def test_evaluate_roundtrip_unserializable_values(page: Page) -> None:
    value = {
        "infinity": float("Infinity"),
        "nInfinity": float("-Infinity"),
        "nZero": float("-0"),
    }
    result = await page.evaluate("a => a", value)
    assert result == value


async def test_evaluate_transfer_arrays(page: Page) -> None:
    result = await page.evaluate("a => a", [1, 2, 3])
    assert result == [1, 2, 3]


async def test_evaluate_transfer_typed_arrays(page: Page) -> None:
    async def test_typed_array(
        typed_array: str, expected: list[float], value_suffix: Optional[str]
    ) -> None:
        value_suffix = "" if value_suffix is None else value_suffix
        result = await page.evaluate(
            f"() => new {typed_array}([1{value_suffix}, 2{value_suffix}, 3{value_suffix}])"
        )
        assert result == expected

    await test_typed_array("Int8Array", [1, 2, 3], None)
    await test_typed_array("Uint8Array", [1, 2, 3], None)
    await test_typed_array("Uint8ClampedArray", [1, 2, 3], None)
    await test_typed_array("Int16Array", [1, 2, 3], None)
    await test_typed_array("Uint16Array", [1, 2, 3], None)
    await test_typed_array("Int32Array", [1, 2, 3], None)
    await test_typed_array("Uint32Array", [1, 2, 3], None)
    await test_typed_array("Float32Array", [1.5, 2.5, 3.5], ".5")
    await test_typed_array("Float64Array", [1.5, 2.5, 3.5], ".5")
    await test_typed_array("BigInt64Array", [1, 2, 3], "n")
    await test_typed_array("BigUint64Array", [1, 2, 3], "n")


async def test_evaluate_transfer_bigint(page: Page) -> None:
    assert await page.evaluate("() => 42n") == 42
    assert await page.evaluate("a => a", 17) == 17


async def test_evaluate_return_undefined_for_objects_with_symbols(page: Page) -> None:
    assert await page.evaluate('[Symbol("foo4")]') == [None]
    assert (
        await page.evaluate(
            """() => {
                const a = { };
                a[Symbol('foo4')] = 42;
                return a;
            }"""
        )
        == {}
    )
    assert (
        await page.evaluate(
            """() => {
                return { foo: [{ a: Symbol('foo4') }] };
            }"""
        )
        == {"foo": [{"a": None}]}
    )


async def test_evaluate_work_with_unicode_chars(page: Page) -> None:
    result = await page.evaluate('a => a["中文字符"]', {"中文字符": 42})
    assert result == 42


async def test_evaluate_throw_when_evaluation_triggers_reload(page: Page) -> None:
    error: Optional[Error] = None
    try:
        await page.evaluate(
            "() => { location.reload(); return new Promise(() => {}); }"
        )
    except Error as e:
        error = e
    assert error
    assert "navigation" in error.message


async def test_evaluate_work_with_exposed_function(page: Page) -> None:
    await page.expose_function("callController", lambda a, b: a * b)
    result = await page.evaluate("callController(9, 3)")
    assert result == 27


async def test_evaluate_reject_promise_with_exception(page: Page) -> None:
    error: Optional[Error] = None
    try:
        await page.evaluate("not_existing_object.property")
    except Error as e:
        error = e
    assert error
    assert "not_existing_object" in error.message


async def test_evaluate_support_thrown_strings(page: Page) -> None:
    error: Optional[Error] = None
    try:
        await page.evaluate('throw "qwerty"')
    except Error as e:
        error = e
    assert error
    assert "qwerty" in error.message


async def test_evaluate_support_thrown_numbers(page: Page) -> None:
    error: Optional[Error] = None
    try:
        await page.evaluate("throw 100500")
    except Error as e:
        error = e
    assert error
    assert "100500" in error.message


async def test_evaluate_return_complex_objects(page: Page) -> None:
    obj = {"foo": "bar!"}
    result = await page.evaluate("a => a", obj)
    assert result == obj


async def test_evaluate_accept_none_as_one_of_multiple_parameters(page: Page) -> None:
    result = await page.evaluate(
        '({ a, b }) => Object.is(a, null) && Object.is(b, "foo")',
        {"a": None, "b": "foo"},
    )
    assert result


async def test_evaluate_properly_serialize_none_arguments(page: Page) -> None:
    assert await page.evaluate("x => ({a: x})", None) == {"a": None}


async def test_should_alias_window_document_and_node(page: Page) -> None:
    object = await page.evaluate("[window, document, document.body]")
    assert object == ["ref: <Window>", "ref: <Document>", "ref: <Node>"]


async def test_evaluate_should_work_for_circular_object(page: Page) -> None:
    a = await page.evaluate(
        """() => {
                const a = {x: 47};
                const b = {a};
                a.b = b;
                return a;
            }"""
    )

    assert a["b"]["a"]["b"]["a"]["x"] == 47
    assert a["b"]["a"] == a


async def test_evaluate_accept_string(page: Page) -> None:
    assert await page.evaluate("1 + 2") == 3


async def test_evaluate_accept_element_handle_as_an_argument(page: Page) -> None:
    await page.set_content("<section>42</section>")
    element = await page.query_selector("section")
    text = await page.evaluate("e => e.textContent", element)
    assert text == "42"


async def test_evaluate_throw_if_underlying_element_was_disposed(page: Page) -> None:
    await page.set_content("<section>39</section>")
    element = await page.query_selector("section")
    assert element
    await element.dispose()
    error: Optional[Error] = None
    try:
        await page.evaluate("e => e.textContent", element)
    except Error as e:
        error = e
    assert error
    assert "no object with guid" in error.message


async def test_evaluate_evaluate_exception(page: Page) -> None:
    error = await page.evaluate(
        """() => {
        function innerFunction() {
        const e = new Error('error message');
        e.name = 'foobar';
        return e;
        }
        return innerFunction();
    }"""
    )
    assert isinstance(error, Error)
    assert error.message == "error message"
    assert error.name == "foobar"
    assert error.stack
    assert "innerFunction" in error.stack


async def test_should_pass_exception_argument(page: Page) -> None:
    def _raise_and_get_exception(exception: Exception) -> Exception:
        try:
            raise exception
        except Exception as e:
            return e

    error_for_roundtrip = Error("error message")
    error_for_roundtrip._name = "foobar"
    error_for_roundtrip._stack = "test stack"
    error = await page.evaluate(
        """e => {
            return { message: e.message, name: e.name, stack: e.stack };
        }""",
        error_for_roundtrip,
    )
    assert error["message"] == "error message"
    assert error["name"] == "foobar"
    assert "test stack" in error["stack"]

    error = await page.evaluate(
        """e => {
            return { message: e.message, name: e.name, stack: e.stack };
        }""",
        _raise_and_get_exception(Exception("error message")),
    )
    assert error["message"] == "error message"
    assert error["name"] == "Exception"
    assert "error message" in error["stack"]


async def test_evaluate_evaluate_date(page: Page) -> None:
    result = await page.evaluate(
        '() => ({ date: new Date("2020-05-27T01:31:38.506Z") })'
    )
    assert result == {
        "date": datetime.fromisoformat("2020-05-27T01:31:38.506").replace(
            tzinfo=timezone.utc
        )
    }


async def test_evaluate_roundtrip_date_without_tzinfo(page: Page) -> None:
    date = datetime.fromisoformat("2020-05-27T01:31:38.506")
    result = await page.evaluate("date => date", date)
    assert result.timestamp() == date.timestamp()


async def test_evaluate_roundtrip_date(page: Page) -> None:
    date = datetime.fromisoformat("2020-05-27T01:31:38.506").replace(
        tzinfo=timezone.utc
    )
    result = await page.evaluate("date => date", date)
    assert result == date


async def test_evaluate_roundtrip_date_with_tzinfo(page: Page) -> None:
    date = datetime.fromisoformat("2020-05-27T01:31:38.506")
    date = date.astimezone(timezone(timedelta(hours=4)))
    result = await page.evaluate("date => date", date)
    assert result == date


async def test_evaluate_jsonvalue_date(page: Page) -> None:
    date = datetime.fromisoformat("2020-05-27T01:31:38.506").replace(
        tzinfo=timezone.utc
    )
    result = await page.evaluate(
        '() => ({ date: new Date("2020-05-27T01:31:38.506Z") })'
    )
    assert result == {"date": date}


async def test_should_evaluate_url(page: Page) -> None:
    out = await page.evaluate(
        "() => ({ someKey: new URL('https://user:pass@example.com/?foo=bar#hi') })"
    )
    assert out["someKey"] == ParseResult(
        scheme="https",
        netloc="user:pass@example.com",
        path="/",
        query="foo=bar",
        params="",
        fragment="hi",
    )


async def test_should_roundtrip_url(page: Page) -> None:
    in_ = urlparse("https://user:pass@example.com/?foo=bar#hi")
    out = await page.evaluate("url => url", in_)
    assert in_ == out


async def test_should_roundtrip_complex_url(page: Page) -> None:
    in_ = urlparse(
        "https://user:password@www.contoso.com:80/Home/Index.htm?q1=v1&q2=v2#FragmentName"
    )
    out = await page.evaluate("url => url", in_)
    assert in_ == out


async def test_evaluate_jsonvalue_url(page: Page) -> None:
    url = urlparse("https://example.com/")
    result = await page.evaluate('() => ({ someKey: new URL("https://example.com/") })')
    assert result == {"someKey": url}