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
|
// Copyright 2017 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.
#include "gin/data_object_builder.h"
#include "base/bind.h"
#include "base/logging.h"
#include "gin/dictionary.h"
#include "gin/public/isolate_holder.h"
#include "gin/test/v8_test.h"
#include "v8/include/v8-context.h"
#include "v8/include/v8-function.h"
namespace gin {
namespace {
using DataObjectBuilderTest = V8Test;
// It should create ordinary data properties.
TEST_F(DataObjectBuilderTest, CreatesDataProperties) {
v8::Isolate* isolate = instance_->isolate();
v8::HandleScope handle_scope(isolate);
v8::Local<v8::Context> context = context_.Get(isolate);
v8::Local<v8::Object> object =
DataObjectBuilder(isolate).Set("key", 42).Build();
ASSERT_TRUE(object->HasOwnProperty(context, StringToSymbol(isolate, "key"))
.ToChecked());
v8::Local<v8::Value> descriptor_object;
ASSERT_TRUE(
object->GetOwnPropertyDescriptor(context, StringToSymbol(isolate, "key"))
.ToLocal(&descriptor_object));
gin::Dictionary descriptor(isolate, descriptor_object.As<v8::Object>());
int32_t value = 0;
ASSERT_TRUE(descriptor.Get("value", &value));
EXPECT_EQ(42, value);
bool writable = false;
ASSERT_TRUE(descriptor.Get("writable", &writable));
EXPECT_TRUE(writable);
bool enumerable = false;
ASSERT_TRUE(descriptor.Get("enumerable", &enumerable));
EXPECT_TRUE(enumerable);
bool configurable = false;
ASSERT_TRUE(descriptor.Get("configurable", &configurable));
EXPECT_TRUE(configurable);
}
// It should not invoke setters on the prototype chain.
TEST_F(DataObjectBuilderTest, DoesNotInvokeSetters) {
v8::Isolate* isolate = instance_->isolate();
v8::HandleScope handle_scope(isolate);
v8::Local<v8::Context> context = context_.Get(isolate);
// Install a setter on the object prototype.
v8::Local<v8::Value> object_constructor;
ASSERT_TRUE(context->Global()
->Get(context, StringToSymbol(isolate, "Object"))
.ToLocal(&object_constructor));
v8::Local<v8::Value> object_prototype;
ASSERT_TRUE(object_constructor.As<v8::Function>()
->Get(context, StringToSymbol(isolate, "prototype"))
.ToLocal(&object_prototype));
ASSERT_TRUE(
object_prototype.As<v8::Object>()
->SetAccessor(context, StringToSymbol(isolate, "key"),
[](v8::Local<v8::Name>,
const v8::PropertyCallbackInfo<v8::Value>&) {},
[](v8::Local<v8::Name>, v8::Local<v8::Value>,
const v8::PropertyCallbackInfo<void>&) {
ADD_FAILURE() << "setter should not be invoked";
})
.ToChecked());
// Create an object.
DataObjectBuilder(isolate).Set("key", 42).Build();
}
// The internal handle is cleared when the builder is finished.
// This makes the class harder to abuse, so that its methods cannot be used
// after something may have modified the object in unexpected ways.
#if DCHECK_IS_ON()
TEST_F(DataObjectBuilderTest, UnusableAfterBuild) {
v8::Isolate* isolate = instance_->isolate();
v8::HandleScope handle_scope(isolate);
DataObjectBuilder builder(isolate);
EXPECT_FALSE(builder.Build().IsEmpty());
bool has_dcheck_failure = false;
logging::ScopedLogAssertHandler handler(base::BindRepeating(
[](bool* flag, const char* file, int line, base::StringPiece message,
base::StringPiece stack_trace) { *flag = true; },
base::Unretained(&has_dcheck_failure)));
builder.Build();
EXPECT_TRUE(has_dcheck_failure);
}
#endif // DCHECK_IS_ON()
// As is the normal behaviour of CreateDataProperty, new data properties should
// replace existing ones. Since no non-configurable ones are present, nor should
// the object be non-extensible, this should work.
TEST_F(DataObjectBuilderTest, ReplacesExistingProperties) {
v8::Isolate* isolate = instance_->isolate();
v8::HandleScope handle_scope(isolate);
v8::Local<v8::Object> object =
DataObjectBuilder(isolate).Set("value", 42).Set("value", 55).Build();
gin::Dictionary dictionary(isolate, object);
int32_t value;
ASSERT_TRUE(dictionary.Get("value", &value));
EXPECT_EQ(55, value);
}
// It should work for array indices, too.
TEST_F(DataObjectBuilderTest, CreatesDataPropertiesForIndices) {
v8::Isolate* isolate = instance_->isolate();
v8::HandleScope handle_scope(isolate);
v8::Local<v8::Context> context = context_.Get(isolate);
v8::Local<v8::Object> object = DataObjectBuilder(isolate)
.Set(42, base::StringPiece("forty-two"))
.Build();
ASSERT_TRUE(object->HasOwnProperty(context, 42).ToChecked());
v8::Local<v8::Value> descriptor_object;
ASSERT_TRUE(
object->GetOwnPropertyDescriptor(context, StringToSymbol(isolate, "42"))
.ToLocal(&descriptor_object));
gin::Dictionary descriptor(isolate, descriptor_object.As<v8::Object>());
std::string value;
ASSERT_TRUE(descriptor.Get("value", &value));
EXPECT_EQ("forty-two", value);
bool writable = false;
ASSERT_TRUE(descriptor.Get("writable", &writable));
EXPECT_TRUE(writable);
bool enumerable = false;
ASSERT_TRUE(descriptor.Get("enumerable", &enumerable));
EXPECT_TRUE(enumerable);
bool configurable = false;
ASSERT_TRUE(descriptor.Get("configurable", &configurable));
EXPECT_TRUE(configurable);
}
} // namespace
} // namespace gin
|
