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