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Unified Diff: test/cctest/test-api.cc

Issue 600723005: Introduce PromiseRejectCallback. (Closed) Base URL: https://v8.googlecode.com/svn/branches/bleeding_edge
Patch Set: Created 6 years, 3 months ago
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« include/v8.h ('K') | « src/runtime/runtime.cc ('k') | test/cctest/test-debug.cc » ('j') | no next file with comments »
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Index: test/cctest/test-api.cc
diff --git a/test/cctest/test-api.cc b/test/cctest/test-api.cc
index bf2ef23ffaea84e18e353369ed031017bcd31092..b4af849328659373fda081c836f6e6ffae65e4fb 100644
--- a/test/cctest/test-api.cc
+++ b/test/cctest/test-api.cc
@@ -17618,6 +17618,249 @@ TEST(RethrowBogusErrorStackTrace) {
}
+v8::PromiseRejectEvent reject_event = v8::kPromiseRejectWithNoHandler;
+int promise_reject_counter = 0;
+int promise_revoke_counter = 0;
+
+void PromiseRejectCallback(v8::Handle<v8::Promise> promise,
+ v8::Handle<v8::Value> value,
+ v8::PromiseRejectEvent event) {
+ if (event == v8::kPromiseRejectWithNoHandler) {
+ promise_reject_counter++;
+ CcTest::global()->Set(v8_str("rejected"), promise);
+ CcTest::global()->Set(v8_str("value"), value);
+ } else {
+ promise_revoke_counter++;
+ CcTest::global()->Set(v8_str("revoked"), promise);
+ CHECK(value.IsEmpty());
+ }
+}
+
+
+v8::Handle<v8::Promise> GetPromise(const char* name) {
+ return v8::Handle<v8::Promise>::Cast(CcTest::global()->Get(v8_str(name)));
+}
+
+
+v8::Handle<v8::Value> RejectValue() {
+ return CcTest::global()->Get(v8_str("value"));
+}
+
+
+void ResetPromiseStates() {
+ promise_reject_counter = 0;
+ promise_revoke_counter = 0;
+ CcTest::global()->Set(v8_str("rejected"), v8_str(""));
+ CcTest::global()->Set(v8_str("value"), v8_str(""));
+ CcTest::global()->Set(v8_str("revoked"), v8_str(""));
+}
+
+
+TEST(PromiseRejectCallback) {
+ LocalContext env;
+ v8::Isolate* isolate = env->GetIsolate();
+ v8::HandleScope scope(isolate);
+
+ isolate->SetPromiseRejectCallback(PromiseRejectCallback);
+
+ ResetPromiseStates();
+
+ // Create promise p0.
+ CompileRun(
+ "var reject; \n"
+ "var p0 = new Promise( \n"
+ " function(res, rej) { \n"
+ " reject = rej; \n"
+ " } \n"
+ "); \n");
+ CHECK(!GetPromise("p0")->HasHandler());
+ CHECK_EQ(0, promise_reject_counter);
+ CHECK_EQ(0, promise_revoke_counter);
+
+ // Add resolve handler (and default reject handler) to p0.
+ CompileRun("var p1 = p0.then(function(){});");
+ CHECK(GetPromise("p0")->HasHandler());
+ CHECK(!GetPromise("p1")->HasHandler());
+ CHECK_EQ(0, promise_reject_counter);
+ CHECK_EQ(0, promise_revoke_counter);
+
+ // Reject p0.
+ CompileRun("reject('ppp');");
+ CHECK(GetPromise("p0")->HasHandler());
+ CHECK(!GetPromise("p1")->HasHandler());
+ CHECK_EQ(1, promise_reject_counter);
+ CHECK_EQ(0, promise_revoke_counter);
+ CHECK_EQ(v8::kPromiseRejectWithNoHandler, reject_event);
+ CHECK(GetPromise("rejected")->Equals(GetPromise("p1")));
+ CHECK(RejectValue()->Equals(v8_str("ppp")));
+
+ // Reject p0 again. Callback is not triggered again.
+ CompileRun("reject();");
+ CHECK(GetPromise("p0")->HasHandler());
+ CHECK(!GetPromise("p1")->HasHandler());
+ CHECK_EQ(1, promise_reject_counter);
+ CHECK_EQ(0, promise_revoke_counter);
+
+ // Add resolve handler to p1.
+ CompileRun("var p2 = p1.then(function(){});");
+ CHECK(GetPromise("p0")->HasHandler());
+ CHECK(GetPromise("p1")->HasHandler());
+ CHECK(!GetPromise("p2")->HasHandler());
+ CHECK_EQ(2, promise_reject_counter);
+ CHECK_EQ(1, promise_revoke_counter);
+ CHECK(GetPromise("rejected")->Equals(GetPromise("p2")));
+ CHECK(RejectValue()->Equals(v8_str("ppp")));
+ CHECK(GetPromise("revoked")->Equals(GetPromise("p1")));
+
+ ResetPromiseStates();
+
+ // Create promise q0.
+ CompileRun(
+ "var q0 = new Promise( \n"
+ " function(res, rej) { \n"
+ " reject = rej; \n"
+ " } \n"
+ "); \n");
+ CHECK(!GetPromise("q0")->HasHandler());
+ CHECK_EQ(0, promise_reject_counter);
+ CHECK_EQ(0, promise_revoke_counter);
+
+ // Add reject handler to q0.
+ CompileRun("var q1 = q0.catch(function() {});");
+ CHECK(GetPromise("q0")->HasHandler());
+ CHECK(!GetPromise("q1")->HasHandler());
+ CHECK_EQ(0, promise_reject_counter);
+ CHECK_EQ(0, promise_revoke_counter);
+
+ // Reject q0.
+ CompileRun("reject('qq')");
+ CHECK(GetPromise("q0")->HasHandler());
+ CHECK(!GetPromise("q1")->HasHandler());
+ CHECK_EQ(0, promise_reject_counter);
+ CHECK_EQ(0, promise_revoke_counter);
+
+ // Add a new reject handler, which rejects by returning Promise.reject().
+ // The returned promise q_ triggers a reject callback at first, only to
+ // revoke it when returning it causes q2 to be rejected.
+ CompileRun(
+ "var q_;"
+ "var q2 = q0.catch( \n"
+ " function() { \n"
+ " q_ = Promise.reject('qqq'); \n"
+ " return q_; \n"
+ " } \n"
+ "); \n");
+ CHECK(GetPromise("q0")->HasHandler());
+ CHECK(!GetPromise("q1")->HasHandler());
+ CHECK(!GetPromise("q2")->HasHandler());
+ CHECK(GetPromise("q_")->HasHandler());
+ CHECK_EQ(2, promise_reject_counter);
+ CHECK_EQ(1, promise_revoke_counter);
+ CHECK(GetPromise("rejected")->Equals(GetPromise("q2")));
+ CHECK(GetPromise("revoked")->Equals(GetPromise("q_")));
+ CHECK(RejectValue()->Equals(v8_str("qqq")));
+
+ // Add a reject handler to the resolved q1, which rejects by throwing.
+ CompileRun(
+ "var q3 = q1.then( \n"
+ " function() { \n"
+ " throw 'qqqq'; \n"
+ " } \n"
+ "); \n");
+ CHECK(GetPromise("q0")->HasHandler());
+ CHECK(GetPromise("q1")->HasHandler());
+ CHECK(!GetPromise("q2")->HasHandler());
+ CHECK(!GetPromise("q3")->HasHandler());
+ CHECK_EQ(3, promise_reject_counter);
+ CHECK_EQ(1, promise_revoke_counter);
+ CHECK(GetPromise("rejected")->Equals(GetPromise("q3")));
+ CHECK(RejectValue()->Equals(v8_str("qqqq")));
+
+ ResetPromiseStates();
+
+ // Create promise r0, which has three handlers, two of which handle rejects.
+ CompileRun(
+ "var r0 = new Promise( \n"
+ " function(res, rej) { \n"
+ " reject = rej; \n"
+ " } \n"
+ "); \n"
+ "var r1 = r0.catch(function() {}); \n"
+ "var r2 = r0.then(function() {}); \n"
+ "var r3 = r0.then(function() {}, \n"
+ " function() {}); \n");
+ CHECK(GetPromise("r0")->HasHandler());
+ CHECK(!GetPromise("r1")->HasHandler());
+ CHECK(!GetPromise("r2")->HasHandler());
+ CHECK(!GetPromise("r3")->HasHandler());
+ CHECK_EQ(0, promise_reject_counter);
+ CHECK_EQ(0, promise_revoke_counter);
+
+ // Reject r0.
+ CompileRun("reject('rrr')");
+ CHECK(GetPromise("r0")->HasHandler());
+ CHECK(!GetPromise("r1")->HasHandler());
+ CHECK(!GetPromise("r2")->HasHandler());
+ CHECK(!GetPromise("r3")->HasHandler());
+ CHECK_EQ(1, promise_reject_counter);
+ CHECK_EQ(0, promise_revoke_counter);
+ CHECK(GetPromise("rejected")->Equals(GetPromise("r2")));
+ CHECK(RejectValue()->Equals(v8_str("rrr")));
+
+ // Add reject handler to r2.
+ CompileRun("var r4 = r2.catch(function() {});");
+ CHECK(GetPromise("r0")->HasHandler());
+ CHECK(!GetPromise("r1")->HasHandler());
+ CHECK(GetPromise("r2")->HasHandler());
+ CHECK(!GetPromise("r3")->HasHandler());
+ CHECK(!GetPromise("r4")->HasHandler());
+ CHECK_EQ(1, promise_reject_counter);
+ CHECK_EQ(1, promise_revoke_counter);
+ CHECK(GetPromise("revoked")->Equals(GetPromise("r2")));
+ CHECK(RejectValue()->Equals(v8_str("rrr")));
+
+ // Add reject handlers to r4.
+ CompileRun("var r5 = r4.then(function() {}, function() {});");
+ CHECK(GetPromise("r0")->HasHandler());
+ CHECK(!GetPromise("r1")->HasHandler());
+ CHECK(GetPromise("r2")->HasHandler());
+ CHECK(!GetPromise("r3")->HasHandler());
+ CHECK(GetPromise("r4")->HasHandler());
+ CHECK(!GetPromise("r5")->HasHandler());
+ CHECK_EQ(1, promise_reject_counter);
+ CHECK_EQ(1, promise_revoke_counter);
+
+ ResetPromiseStates();
+
+ // Create promise s0, which has three handlers, none of which handle rejects.
+ CompileRun(
+ "var s0 = new Promise( \n"
+ " function(res, rej) { \n"
+ " reject = rej; \n"
+ " } \n"
+ "); \n"
+ "var s1 = s0.then(function() {}); \n"
+ "var s2 = s0.then(function() {}); \n"
+ "var s3 = s0.then(function() {}); \n");
+ CHECK(GetPromise("s0")->HasHandler());
+ CHECK(!GetPromise("s1")->HasHandler());
+ CHECK(!GetPromise("s2")->HasHandler());
+ CHECK(!GetPromise("s3")->HasHandler());
+ CHECK_EQ(0, promise_reject_counter);
+ CHECK_EQ(0, promise_revoke_counter);
+
+ // Reject s0.
+ CompileRun("reject('sss')");
+ CHECK(GetPromise("s0")->HasHandler());
+ CHECK(!GetPromise("s1")->HasHandler());
+ CHECK(!GetPromise("s2")->HasHandler());
+ CHECK(!GetPromise("s3")->HasHandler());
+ CHECK_EQ(3, promise_reject_counter);
+ CHECK_EQ(0, promise_revoke_counter);
+ CHECK(RejectValue()->Equals(v8_str("sss")));
+}
+
+
void AnalyzeStackOfEvalWithSourceURL(
const v8::FunctionCallbackInfo<v8::Value>& args) {
v8::HandleScope scope(args.GetIsolate());
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