blob: 63a52f1673eb5676a9ff8b49c590b87f41953ad1 (
plain)
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
|
// Copyright 2019 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef THIRD_PARTY_BLINK_RENDERER_BINDINGS_CORE_V8_SCRIPT_PROMISE_TESTER_H_
#define THIRD_PARTY_BLINK_RENDERER_BINDINGS_CORE_V8_SCRIPT_PROMISE_TESTER_H_
#include "base/memory/weak_ptr.h"
#include "third_party/blink/renderer/bindings/core/v8/script_value.h"
#include "third_party/blink/renderer/platform/wtf/allocator/allocator.h"
namespace blink {
class ScriptState;
class ScriptPromise;
class Visitor;
// Utility for writing unit tests involving promises.
// Typical usage:
// ScriptPromiseTester tester(script_state, script_promise);
// tester.WaitUntilSettled(); // Runs a nested event loop.
// EXPECT_TRUE(tester.IsFulfilled());
// EXPECT_TRUE(tester.Value().IsUndefined());
class ScriptPromiseTester final {
DISALLOW_NEW();
public:
ScriptPromiseTester(ScriptState*, ScriptPromise);
// Run microtasks and tasks until the promise is either fulfilled or rejected.
// If the promise never settles this will busy loop until the test times out.
void WaitUntilSettled();
// Did the promise fulfill?
bool IsFulfilled() const { return state_ == State::kFulfilled; }
// Did the promise reject?
bool IsRejected() const { return state_ == State::kRejected; }
// The value the promise fulfilled or rejected with.
ScriptValue Value() const;
void Trace(Visitor*);
private:
class ThenFunction;
enum class State { kNotSettled, kFulfilled, kRejected };
Member<ScriptState> script_state_;
State state_ = State::kNotSettled;
ScriptValue value_;
base::WeakPtrFactory<ScriptPromiseTester> weak_factory_{this};
DISALLOW_COPY_AND_ASSIGN(ScriptPromiseTester);
};
} // namespace blink
#endif // THIRD_PARTY_BLINK_RENDERER_BINDINGS_CORE_V8_SCRIPT_PROMISE_TESTER_H_
|
