src/third_party/WebKit/Source/bindings/core/v8/ScriptPromiseTest.cpp

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  30
  31 #include "config.h"
  32 #include "bindings/core/v8/ScriptPromise.h"
  33
  34 #include "bindings/core/v8/ScriptFunction.h"
  35 #include "bindings/core/v8/ScriptValue.h"
  36 #include "bindings/core/v8/V8Binding.h"
  37 #include "core/dom/DOMException.h"
  38 #include "core/dom/ExceptionCode.h"
  39
  40 #include <gtest/gtest.h>
  41 #include <v8.h>
  42
  43 namespace blink {
  44
  45 namespace {
  46
  47 void callback(const v8::FunctionCallbackInfo<v8::Value>& info) { }
  48
  49 class Function : public ScriptFunction {
  50 public:
  51     static v8::Handle<v8::Function> createFunction(ScriptState* scriptState, String* value)
  52     {
  53         Function* self = new Function(scriptState, value);
  54         return self->bindToV8Function();
  55     }
  56
  57 private:
  58     Function(ScriptState* scriptState, String* value)
  59         : ScriptFunction(scriptState)
  60         , m_value(value)
  61     {
  62     }
  63
  64     virtual ScriptValue call(ScriptValue value) override
  65     {
  66         ASSERT(!value.isEmpty());
  67         *m_value = toCoreString(value.v8Value()->ToString());
  68         return value;
  69     }
  70
  71     String* m_value;
  72 };
  73
  74 class ScriptPromiseTest : public testing::Test {
  75 public:
  76     ScriptPromiseTest()
  77         : m_scope(v8::Isolate::GetCurrent())
  78     {
  79     }
  80
  81     ~ScriptPromiseTest()
  82     {
  83         // FIXME: We put this statement here to clear an exception from the isolate.
  84         createClosure(callback, v8::Undefined(m_scope.isolate()), m_scope.isolate());
  85
  86         // Execute all pending microtasks
  87         isolate()->RunMicrotasks();
  88     }
  89
  90     ScriptState* scriptState() const { return m_scope.scriptState(); }
  91     v8::Isolate* isolate() const { return m_scope.isolate(); }
  92
  93 protected:
  94     typedef ScriptPromise::InternalResolver Resolver;
  95     V8TestingScope m_scope;
  96 };
  97
  98 TEST_F(ScriptPromiseTest, constructFromNonPromise)
  99 {
 100     v8::TryCatch trycatch;
 101     ScriptPromise promise(scriptState(), v8::Undefined(isolate()));
 102     ASSERT_TRUE(trycatch.HasCaught());
 103     ASSERT_TRUE(promise.isEmpty());
 104 }
 105
 106 TEST_F(ScriptPromiseTest, thenResolve)
 107 {
 108     Resolver resolver(scriptState());
 109     ScriptPromise promise = resolver.promise();
 110     String onFulfilled, onRejected;
 111     promise.then(Function::createFunction(scriptState(), &onFulfilled), Function::createFunction(scriptState(), &onRejected));
 112
 113     ASSERT_FALSE(promise.isEmpty());
 114     EXPECT_EQ(String(), onFulfilled);
 115     EXPECT_EQ(String(), onRejected);
 116
 117     isolate()->RunMicrotasks();
 118     resolver.resolve(v8String(isolate(), "hello"));
 119
 120     EXPECT_EQ(String(), onFulfilled);
 121     EXPECT_EQ(String(), onRejected);
 122
 123     isolate()->RunMicrotasks();
 124
 125     EXPECT_EQ("hello", onFulfilled);
 126     EXPECT_EQ(String(), onRejected);
 127 }
 128
 129 TEST_F(ScriptPromiseTest, resolveThen)
 130 {
 131     Resolver resolver(scriptState());
 132     ScriptPromise promise = resolver.promise();
 133     String onFulfilled, onRejected;
 134     resolver.resolve(v8String(isolate(), "hello"));
 135     promise.then(Function::createFunction(scriptState(), &onFulfilled), Function::createFunction(scriptState(), &onRejected));
 136
 137     ASSERT_FALSE(promise.isEmpty());
 138     EXPECT_EQ(String(), onFulfilled);
 139     EXPECT_EQ(String(), onRejected);
 140
 141     isolate()->RunMicrotasks();
 142
 143     EXPECT_EQ("hello", onFulfilled);
 144     EXPECT_EQ(String(), onRejected);
 145 }
 146
 147 TEST_F(ScriptPromiseTest, thenReject)
 148 {
 149     Resolver resolver(scriptState());
 150     ScriptPromise promise = resolver.promise();
 151     String onFulfilled, onRejected;
 152     promise.then(Function::createFunction(scriptState(), &onFulfilled), Function::createFunction(scriptState(), &onRejected));
 153
 154     ASSERT_FALSE(promise.isEmpty());
 155     EXPECT_EQ(String(), onFulfilled);
 156     EXPECT_EQ(String(), onRejected);
 157
 158     isolate()->RunMicrotasks();
 159     resolver.reject(v8String(isolate(), "hello"));
 160
 161     EXPECT_EQ(String(), onFulfilled);
 162     EXPECT_EQ(String(), onRejected);
 163
 164     isolate()->RunMicrotasks();
 165
 166     EXPECT_EQ(String(), onFulfilled);
 167     EXPECT_EQ("hello", onRejected);
 168 }
 169
 170 TEST_F(ScriptPromiseTest, rejectThen)
 171 {
 172     Resolver resolver(scriptState());
 173     ScriptPromise promise = resolver.promise();
 174     String onFulfilled, onRejected;
 175     resolver.reject(v8String(isolate(), "hello"));
 176     promise.then(Function::createFunction(scriptState(), &onFulfilled), Function::createFunction(scriptState(), &onRejected));
 177
 178     ASSERT_FALSE(promise.isEmpty());
 179     EXPECT_EQ(String(), onFulfilled);
 180     EXPECT_EQ(String(), onRejected);
 181
 182     isolate()->RunMicrotasks();
 183
 184     EXPECT_EQ(String(), onFulfilled);
 185     EXPECT_EQ("hello", onRejected);
 186 }
 187
 188 TEST_F(ScriptPromiseTest, castPromise)
 189 {
 190     ScriptPromise promise = Resolver(scriptState()).promise();
 191     ScriptPromise newPromise = ScriptPromise::cast(scriptState(), promise.v8Value());
 192
 193     ASSERT_FALSE(promise.isEmpty());
 194     EXPECT_EQ(promise.v8Value(), newPromise.v8Value());
 195 }
 196
 197 TEST_F(ScriptPromiseTest, castNonPromise)
 198 {
 199     String onFulfilled1, onFulfilled2, onRejected1, onRejected2;
 200
 201     ScriptValue value = ScriptValue(scriptState(), v8String(isolate(), "hello"));
 202     ScriptPromise promise1 = ScriptPromise::cast(scriptState(), ScriptValue(value));
 203     ScriptPromise promise2 = ScriptPromise::cast(scriptState(), ScriptValue(value));
 204     promise1.then(Function::createFunction(scriptState(), &onFulfilled1), Function::createFunction(scriptState(), &onRejected1));
 205     promise2.then(Function::createFunction(scriptState(), &onFulfilled2), Function::createFunction(scriptState(), &onRejected2));
 206
 207     ASSERT_FALSE(promise1.isEmpty());
 208     ASSERT_FALSE(promise2.isEmpty());
 209     EXPECT_NE(promise1.v8Value(), promise2.v8Value());
 210
 211     ASSERT_TRUE(promise1.v8Value()->IsPromise());
 212     ASSERT_TRUE(promise2.v8Value()->IsPromise());
 213
 214     EXPECT_EQ(String(), onFulfilled1);
 215     EXPECT_EQ(String(), onFulfilled2);
 216     EXPECT_EQ(String(), onRejected1);
 217     EXPECT_EQ(String(), onRejected2);
 218
 219     isolate()->RunMicrotasks();
 220
 221     EXPECT_EQ("hello", onFulfilled1);
 222     EXPECT_EQ("hello", onFulfilled2);
 223     EXPECT_EQ(String(), onRejected1);
 224     EXPECT_EQ(String(), onRejected2);
 225 }
 226
 227 TEST_F(ScriptPromiseTest, reject)
 228 {
 229     String onFulfilled, onRejected;
 230
 231     ScriptValue value = ScriptValue(scriptState(), v8String(isolate(), "hello"));
 232     ScriptPromise promise = ScriptPromise::reject(scriptState(), ScriptValue(value));
 233     promise.then(Function::createFunction(scriptState(), &onFulfilled), Function::createFunction(scriptState(), &onRejected));
 234
 235     ASSERT_FALSE(promise.isEmpty());
 236     ASSERT_TRUE(promise.v8Value()->IsPromise());
 237
 238     EXPECT_EQ(String(), onFulfilled);
 239     EXPECT_EQ(String(), onRejected);
 240
 241     isolate()->RunMicrotasks();
 242
 243     EXPECT_EQ(String(), onFulfilled);
 244     EXPECT_EQ("hello", onRejected);
 245 }
 246
 247 TEST_F(ScriptPromiseTest, rejectWithExceptionState)
 248 {
 249     String onFulfilled, onRejected;
 250     ScriptPromise promise = ScriptPromise::rejectWithDOMException(scriptState(), DOMException::create(SyntaxError, "some syntax error"));
 251     promise.then(Function::createFunction(scriptState(), &onFulfilled), Function::createFunction(scriptState(), &onRejected));
 252
 253     ASSERT_FALSE(promise.isEmpty());
 254     EXPECT_EQ(String(), onFulfilled);
 255     EXPECT_EQ(String(), onRejected);
 256
 257     isolate()->RunMicrotasks();
 258
 259     EXPECT_EQ(String(), onFulfilled);
 260     EXPECT_EQ("SyntaxError: some syntax error", onRejected);
 261 }
 262
 263 } // namespace
 264
 265 } // namespace blink