Promises: whenever evaluating checkSequence(sequence), also assert length of sequence (#2672)

test/built-ins/Promise/all/S25.4.4.1_A2.2_T1.js

@@ -20,6 +20,7 @@ Promise.resolve().then(function() {
   sequence.push(3);
 }).then(function() {
   sequence.push(4);
+  assert.sameValue(sequence.length, 4);
   checkSequence(sequence, "Promises resolved in unexpected sequence");
 }).then($DONE, $DONE);
 

test/built-ins/Promise/all/S25.4.4.1_A7.2_T1.js

@@ -22,14 +22,17 @@ sequence.push(1);
 
 Promise.all([p1]).then(function(resolved) {
   sequence.push(4);
+  assert.sameValue(sequence.length, 4);
   checkSequence(sequence, "Expected Promise.all().then to queue second");
 }).catch($DONE);
 
 p1.then(function() {
   sequence.push(3);
+  assert.sameValue(sequence.length, 3);
   checkSequence(sequence, "Expected p1.then to queue first");
 }).then(function() {
   sequence.push(5);
+  assert.sameValue(sequence.length, 5);
   checkSequence(sequence, "Expected final then to queue last");
 }).then($DONE, $DONE);
 

test/built-ins/Promise/all/S25.4.4.1_A8.1_T1.js

@@ -22,16 +22,19 @@ sequence.push(1);
 
 p1.then(function() {
   sequence.push(3);
+  assert.sameValue(sequence.length, 3);
   checkSequence(sequence, "Expected to be called first.");
 }).catch($DONE);
 
 Promise.all([p1, p2]).then(function() {
   sequence.push(5);
+  assert.sameValue(sequence.length, 5);
   checkSequence(sequence, "Expected to be called third.");
 }).then($DONE, $DONE);
 
 p2.then(function() {
   sequence.push(4);
+  assert.sameValue(sequence.length, 4);
   checkSequence(sequence, "Expected to be called second.");
 }).catch($DONE);
 

test/built-ins/Promise/allSettled/resolved-immed.js

@@ -19,7 +19,8 @@ Promise.resolve().then(function() {
   sequence.push(3);
 }).then(function() {
   sequence.push(4);
-  checkSequence(sequence, 'Promises resolved in unexpected sequence');
+  assert.sameValue(sequence.length, 4);
+checkSequence(sequence, 'Promises resolved in unexpected sequence');
 }).then($DONE, $DONE);
 
 sequence.push(1);

test/built-ins/Promise/allSettled/resolved-sequence-extra-ticks.js

@@ -30,14 +30,17 @@ sequence.push(1);
 
 Promise.allSettled([p1]).then(function(resolved) {
   sequence.push(4);
+  assert.sameValue(sequence.length, 4);
   checkSequence(sequence, 'Expected Promise.allSettled().then to queue second');
 }).catch($DONE);
 
 p1.then(function() {
   sequence.push(3);
+  assert.sameValue(sequence.length, 3);
   checkSequence(sequence, 'Expected p1.then to queue first');
 }).then(function() {
   sequence.push(5);
+  assert.sameValue(sequence.length, 5);
   checkSequence(sequence, 'Expected final then to queue last');
 }).then($DONE, $DONE);
 

test/built-ins/Promise/allSettled/resolved-sequence-mixed.js

@@ -37,22 +37,26 @@ sequence.push(1);
 
 p1.catch(function() {
   sequence.push(3);
+  assert.sameValue(sequence.length, 3);
   checkSequence(sequence, 'Expected to be called first.');
-}).catch($DONE);
+});
 
 Promise.allSettled([p1, p2, p3]).then(function() {
   sequence.push(6);
+  assert.sameValue(sequence.length, 6);
   checkSequence(sequence, 'Expected to be called fourth.');
 }).then($DONE, $DONE);
 
 p2.then(function() {
   sequence.push(4);
+  assert.sameValue(sequence.length, 4);
   checkSequence(sequence, 'Expected to be called second.');
-}).catch($DONE);
+});
 
 sequence.push(2);
 
 p3.catch(function() {
   sequence.push(5);
+  assert.sameValue(sequence.length, 5);
   checkSequence(sequence, 'Expected to be called third.');
-}).catch($DONE);
+});

test/built-ins/Promise/allSettled/resolved-sequence-with-rejections.js

@@ -33,16 +33,19 @@ sequence.push(1);
 
 p1.catch(function() {
   sequence.push(3);
+  assert.sameValue(sequence.length, 3);
   checkSequence(sequence, 'Expected to be called first.');
 }).catch($DONE);
 
 Promise.allSettled([p1, p2]).then(function() {
   sequence.push(5);
+  assert.sameValue(sequence.length, 5);
   checkSequence(sequence, 'Expected to be called third.');
 }).then($DONE, $DONE);
 
 p2.catch(function() {
   sequence.push(4);
+  assert.sameValue(sequence.length, 4);
   checkSequence(sequence, 'Expected to be called second.');
 }).catch($DONE);
 

test/built-ins/Promise/allSettled/resolved-sequence.js

@@ -33,16 +33,19 @@ sequence.push(1);
 
 p1.then(function() {
   sequence.push(3);
+  assert.sameValue(sequence.length, 3);
   checkSequence(sequence, 'Expected to be called first.');
 }).catch($DONE);
 
 Promise.allSettled([p1, p2]).then(function() {
   sequence.push(5);
+  assert.sameValue(sequence.length, 5);
   checkSequence(sequence, 'Expected to be called third.');
 }).then($DONE, $DONE);
 
 p2.then(function() {
   sequence.push(4);
+  assert.sameValue(sequence.length, 4);
   checkSequence(sequence, 'Expected to be called second.');
 }).catch($DONE);
 

test/built-ins/Promise/any/resolved-sequence-extra-ticks.js

@@ -37,14 +37,17 @@ sequence.push(1);
 
 Promise.any([p1]).then((resolved) => {
   sequence.push(4);
+  assert.sameValue(sequence.length, 4);
   checkSequence(sequence, 'Expected Promise.any().then to queue second');
 }).catch($DONE);
 
 p1.then(() => {
   sequence.push(3);
+  assert.sameValue(sequence.length, 3);
   checkSequence(sequence, 'Expected p1.then to queue first');
 }).then(() => {
   sequence.push(5);
+  assert.sameValue(sequence.length, 5);
   checkSequence(sequence, 'Expected final then to queue last');
 }).then($DONE, $DONE);
 

test/built-ins/Promise/any/resolved-sequence-mixed.js

@@ -44,16 +44,19 @@ sequence.push(1);
 
 p1.catch(() => {
   sequence.push(3);
+  assert.sameValue(sequence.length, 3);
   checkSequence(sequence, 'Expected to be called first.');
 }).catch($DONE);
 
 Promise.any([p1, p2, p3]).then(() => {
   sequence.push(6);
+  assert.sameValue(sequence.length, 6);
   checkSequence(sequence, 'Expected to be called fourth.');
 }).then($DONE, $DONE);
 
 p2.then(() => {
   sequence.push(4);
+  assert.sameValue(sequence.length, 4);
   checkSequence(sequence, 'Expected to be called second.');
 }).catch($DONE);
 
@@ -61,5 +64,6 @@ sequence.push(2);
 
 p3.catch(() => {
   sequence.push(5);
+  assert.sameValue(sequence.length, 5);
   checkSequence(sequence, 'Expected to be called third.');
 }).catch($DONE);

test/built-ins/Promise/any/resolved-sequence-with-rejections.js

@@ -40,11 +40,13 @@ sequence.push(1);
 
 p1.catch(() => {
   sequence.push(3);
+  assert.sameValue(sequence.length, 3);
   checkSequence(sequence, 'Expected to be called first.');
 }).catch($DONE);
 
 Promise.any([p1, p2]).then(() => {
   sequence.push(5);
+  assert.sameValue(sequence.length, 5);
   checkSequence(sequence, 'Expected to be called third.');
 }).then($DONE, outcome => {
   assert(outcome instanceof AggregateError);
@@ -55,6 +57,7 @@ Promise.any([p1, p2]).then(() => {
 
 p2.catch(() => {
   sequence.push(4);
+  assert.sameValue(sequence.length, 4);
   checkSequence(sequence, 'Expected to be called second.');
 }).catch($DONE);
 

test/built-ins/Promise/any/resolved-sequence.js

@@ -35,16 +35,19 @@ sequence.push(1);
 
 p1.then(function() {
   sequence.push(3);
-  checkSequence(sequence, 'Expected to be called first.');
+  assert.sameValue(sequence.length, 3);
+checkSequence(sequence, 'Expected to be called first.');
 }).catch($DONE);
 
 Promise.any([p1, p2]).then(function() {
   sequence.push(5);
+  assert.sameValue(sequence.length, 5);
   checkSequence(sequence, 'Expected to be called third.');
 }).then($DONE, $DONE);
 
 p2.then(function() {
   sequence.push(4);
+  assert.sameValue(sequence.length, 4);
   checkSequence(sequence, 'Expected to be called second.');
 }).catch($DONE);
 

test/built-ins/Promise/prototype/finally/rejected-observable-then-calls.js

@@ -34,6 +34,6 @@ no.catch(function(e) {
   sequence.push(5);
   assert.sameValue(e, noReason);
 }).then(function() {
+  assert.sameValue(sequence.length, 5);
   checkSequence(sequence, "All expected callbacks called in correct order");
-  $DONE();
+}).then($DONE, $DONE);
-}).catch($ERROR);

test/built-ins/Promise/prototype/finally/rejection-reason-no-fulfill.js

@@ -24,6 +24,6 @@ p.finally(function() {
   sequence.push(2);
   assert.sameValue(reason, original, 'onFinally can not override the rejection value by returning');
 }).then(function() {
+  assert.sameValue(sequence.length, 2);
   checkSequence(sequence, "All expected callbacks called in correct order");
-  $DONE();
+}).then($DONE, $DONE);
-}).catch($ERROR);

test/built-ins/Promise/prototype/finally/rejection-reason-override-with-throw.js

@@ -24,6 +24,6 @@ p.finally(function() {
   sequence.push(2);
   assert.sameValue(reason, thrown, 'onFinally can override the rejection reason by throwing');
 }).then(function() {
+  assert.sameValue(sequence.length, 2);
   checkSequence(sequence, "All expected callbacks called in correct order");
-  $DONE();
+}).then($DONE, $DONE);
-}).catch($ERROR);

test/built-ins/Promise/prototype/finally/resolution-value-no-override.js

@@ -20,6 +20,6 @@ p.finally(function() {
   sequence.push(2);
   assert.sameValue(x, obj, 'onFinally can not override the resolution value');
 }).then(function() {
+  assert.sameValue(sequence.length, 2);
   checkSequence(sequence, "All expected callbacks called in correct order");
-  $DONE();
+}).then($DONE, $DONE);
-}).catch($ERROR);

test/built-ins/Promise/prototype/finally/resolved-observable-then-calls.js

@@ -34,6 +34,7 @@ yes.then(function(x) {
   sequence.push(5);
   assert.sameValue(e, noReason);
 }).then(function() {
+  assert.sameValue(sequence.length, 5);
   checkSequence(sequence, "All expected callbacks called in correct order");
   $DONE();
 }).catch($ERROR);

test/built-ins/Promise/prototype/then/S25.4.4_A1.1_T1.js

@@ -34,6 +34,7 @@ p.then(function() {
 }).then(function() {
   sequence.push(8);
 }).then(function() {
+  assert.sameValue(sequence.length, 8);
   checkSequence(sequence, "Sequence should be as expected");
 }).then($DONE, $DONE);
 

test/built-ins/Promise/prototype/then/S25.4.4_A2.1_T1.js

@@ -20,7 +20,8 @@ var resolveP1, rejectP2, sequence = [];
 })).then(function(msg) {
   sequence.push(msg);
 }).then(function() {
-  checkSequence(sequence, "Expected 1,2,3");
+  assert.sameValue(sequence.length, 3);
+checkSequence(sequence, "Expected 1,2,3");
 }).then($DONE, $DONE);
 
 (new Promise(function(resolve, reject) {

test/built-ins/Promise/prototype/then/S25.4.4_A2.1_T2.js

@@ -33,6 +33,7 @@ p1.then(function(msg) {
 p2.catch(function(msg) {
   sequence.push(msg);
 }).then(function() {
+  assert.sameValue(sequence.length, 3);
   checkSequence(sequence, "Expected 1,2,3");
 }).then($DONE, $DONE);
 

test/built-ins/Promise/prototype/then/S25.4.4_A2.1_T3.js

@@ -34,8 +34,9 @@ Promise.resolve().then(function() {
   p2.catch(function(msg) {
     sequence.push(msg);
   }).then(function() {
+    assert.sameValue(sequence.length, 3);
     checkSequence(sequence, "Expected 1,2,3");
   }).then($DONE, $DONE);
-});
+}).then($DONE, $DONE);
 
 sequence.push(1);

test/built-ins/Promise/prototype/then/S25.4.5.3_A5.1_T1.js

@@ -22,6 +22,7 @@ sequence.push(1);
 
 p.then(function() {
   sequence.push(3);
+  assert.sameValue(sequence.length, 3);
   checkSequence(sequence, "Should be second");
 }).catch($DONE);
 
@@ -29,10 +30,12 @@ Promise.resolve().then(function() {
   // enqueue another then-handler
   p.then(function() {
     sequence.push(4);
-    checkSequence(sequence, "Should be third");
+    assert.sameValue(sequence.length, 4);
+  checkSequence(sequence, "Should be third");
   }).then($DONE, $DONE);
 
   sequence.push(2);
+  assert.sameValue(sequence.length, 2);
   checkSequence(sequence, "Should be first");
 
   pResolve();

test/built-ins/Promise/prototype/then/S25.4.5.3_A5.2_T1.js

@@ -24,18 +24,21 @@ pResolve();
 
 p.then(function() {
   sequence.push(3);
-  checkSequence(sequence, "Should be first");
+  assert.sameValue(sequence.length, 3);
+checkSequence(sequence, "Should be first");
 }).catch($DONE);
 
 Promise.resolve().then(function() {
   // enqueue another then-handler
   p.then(function() {
     sequence.push(5);
-    checkSequence(sequence, "Should be third");
+    assert.sameValue(sequence.length, 5);
+checkSequence(sequence, "Should be third");
   }).then($DONE, $DONE);
 
   sequence.push(4);
-  checkSequence(sequence, "Should be second");
+  assert.sameValue(sequence.length, 4);
+checkSequence(sequence, "Should be second");
 }).catch($DONE);
 
 sequence.push(2);

test/built-ins/Promise/prototype/then/S25.4.5.3_A5.3_T1.js

@@ -26,6 +26,7 @@ p.then(function() {
   $ERROR("Should not be called -- Promise rejected.");
 }, function() {
   sequence.push(3);
+  assert.sameValue(sequence.length, 3);
   checkSequence(sequence, "Should be first");
 }).catch($DONE);
 
@@ -35,10 +36,12 @@ Promise.resolve().then(function() {
     $ERROR("Should not be called (2) -- Promise rejected.");
   }, function() {
     sequence.push(5);
-    checkSequence(sequence, "Should be third");
+    assert.sameValue(sequence.length, 5);
+  checkSequence(sequence, "Should be third");
   }).then($DONE, $DONE);
 
   sequence.push(4);
+  assert.sameValue(sequence.length, 4);
   checkSequence(sequence, "Should be second");
 }).catch($DONE);
 

test/built-ins/Promise/race/S25.4.4.3_A6.1_T1.js

@@ -17,14 +17,17 @@ sequence.push(1);
 
 p.then(function() {
   sequence.push(4);
+  assert.sameValue(sequence.length, 4);
   checkSequence(sequence, "This happens second");
 }).catch($DONE);
 
 Promise.resolve().then(function() {
   sequence.push(3);
+  assert.sameValue(sequence.length, 3);
   checkSequence(sequence, "This happens first");
 }).then(function() {
   sequence.push(5);
+  assert.sameValue(sequence.length, 5);
   checkSequence(sequence, "This happens third");
 }).then($DONE, $DONE);
 

test/built-ins/Promise/race/S25.4.4.3_A6.2_T1.js

@@ -20,14 +20,17 @@ p.then(function() {
   $ERROR("Should not fulfill.");
 }, function() {
   sequence.push(4);
-  checkSequence(sequence, "This happens second");
+  assert.sameValue(sequence.length, 4);
+checkSequence(sequence, "This happens second");
 }).catch($DONE);
 
 Promise.resolve().then(function() {
   sequence.push(3);
+  assert.sameValue(sequence.length, 3);
   checkSequence(sequence, "This happens first");
 }).then(function() {
   sequence.push(5);
+  assert.sameValue(sequence.length, 5);
   checkSequence(sequence, "This happens third");
 }).then($DONE, $DONE);
 

test/built-ins/Promise/race/S25.4.4.3_A7.1_T1.js

@@ -23,14 +23,17 @@ p.then(function(arg) {
   }
 
   sequence.push(4);
+  assert.sameValue(sequence.length, 4);
   checkSequence(sequence, "This happens second");
 }).catch($DONE);
 
 Promise.resolve().then(function() {
   sequence.push(3);
+  assert.sameValue(sequence.length, 3);
   checkSequence(sequence, "This happens first");
 }).then(function() {
   sequence.push(5);
+  assert.sameValue(sequence.length, 5);
   checkSequence(sequence, "This happens third");
 }).then($DONE, $DONE);
 

test/built-ins/Promise/race/S25.4.4.3_A7.1_T2.js

@@ -23,14 +23,17 @@ p.then(function(arg) {
   }
 
   sequence.push(4);
+  assert.sameValue(sequence.length, 4);
   checkSequence(sequence, "This happens second");
 }).catch($DONE);
 
 Promise.resolve().then(function() {
   sequence.push(3);
+  assert.sameValue(sequence.length, 3);
   checkSequence(sequence, "This happens first");
 }).then(function() {
   sequence.push(5);
+  assert.sameValue(sequence.length, 5);
   checkSequence(sequence, "This happens third");
 }).then($DONE, $DONE);
 

test/built-ins/Promise/race/S25.4.4.3_A7.1_T3.js

@@ -23,14 +23,17 @@ p.then(function(arg) {
   }
 
   sequence.push(4);
+  assert.sameValue(sequence.length, 4);
   checkSequence(sequence, "This happens second");
 }).catch($DONE);
 
 Promise.resolve().then(function() {
   sequence.push(3);
+  assert.sameValue(sequence.length, 3);
   checkSequence(sequence, "This happens first");
 }).then(function() {
   sequence.push(5);
+  assert.sameValue(sequence.length, 5);
   checkSequence(sequence, "This happens third");
 }).then($DONE, $DONE);
 

test/built-ins/Promise/race/S25.4.4.3_A7.2_T1.js

@@ -25,14 +25,17 @@ p.then(function() {
   }
 
   sequence.push(4);
+  assert.sameValue(sequence.length, 4);
   checkSequence(sequence, "This happens second");
 }).catch($DONE);
 
 Promise.resolve().then(function() {
   sequence.push(3);
+  assert.sameValue(sequence.length, 3);
   checkSequence(sequence, "This happens first");
 }).then(function() {
   sequence.push(5);
+  assert.sameValue(sequence.length, 5);
   checkSequence(sequence, "This happens third");
 }).then($DONE, $DONE);
 

test/built-ins/Promise/race/reject-from-same-thenable.js

@@ -25,12 +25,12 @@ includes: [promiseHelper.js]
 ---*/
 
 let callCount = 0;
-let values = [];
+let sequence = [];
 
 function Constructor(executor) {
   function reject(value) {
     callCount += 1;
-    values.push(value);
+    sequence.push(value);
   }
   executor(() => {
     throw new Test262Error();
@@ -59,4 +59,5 @@ pReject(2);
 pReject(3);
 
 assert.sameValue(callCount, 3, 'callCount after resolving a');
-checkSequence(values);
+assert.sameValue(sequence.length, 3);
+checkSequence(sequence);

test/built-ins/Promise/race/resolve-from-same-thenable.js

@@ -25,12 +25,12 @@ includes: [promiseHelper.js]
 ---*/
 
 let callCount = 0;
-let values = [];
+let sequence = [];
 
 function Constructor(executor) {
   function resolve(value) {
     callCount += 1;
-    values.push(value);
+    sequence.push(value);
   }
   executor(resolve, $ERROR);
 }
@@ -56,4 +56,5 @@ pResolve(2);
 pResolve(3);
 
 assert.sameValue(callCount, 3, 'callCount after resolving a');
-checkSequence(values);
+assert.sameValue(sequence.length, 3);
+checkSequence(sequence);

test/built-ins/Promise/race/resolved-sequence-with-rejections.js

@@ -30,18 +30,23 @@ let sequence = [1];
 Promise.all([
   a.catch(() => {
     sequence.push(3);
+    assert.sameValue(sequence.length, 3);
     return checkSequence(sequence, 'Expected to be called first.');
   }),
   Promise.race([a, b]).catch(() => {
     sequence.push(5);
+    assert.sameValue(sequence.length, 5);
     return checkSequence(sequence, 'Expected to be called third.');
   }),
   b.catch(() => {
     sequence.push(4);
+    assert.sameValue(sequence.length, 4);
     return checkSequence(sequence, 'Expected to be called second.');
   })
 ]).then(result => {
   compareArray(result, [true, true, true]);
+  assert.sameValue(sequence.length, 5);
+  checkSequence(sequence);
 }).then($DONE, $DONE);
 
 sequence.push(2);

test/built-ins/Promise/race/resolved-sequence.js

@@ -30,17 +30,22 @@ let sequence = [1];
 Promise.all([
   a.then(() => {
     sequence.push(3);
+    assert.sameValue(sequence.length, 3);
     return checkSequence(sequence, 'Expected to be called first.');
   }),
   Promise.race([a, b]).then(() => {
     sequence.push(5);
+    assert.sameValue(sequence.length, 5);
     return checkSequence(sequence, 'Expected to be called third.');
   }),
   b.then(() => {
     sequence.push(4);
+    assert.sameValue(sequence.length, 4);
     return checkSequence(sequence, 'Expected to be called second.');
   })
 ]).then(result => {
   compareArray(result, [true, true, true]);
+  assert.sameValue(sequence.length, 5);
+  checkSequence(sequence)
 }).then($DONE, $DONE);
 sequence.push(2);

test/built-ins/Promise/resolve/S25.4.4.5_A3.1_T1.js

@@ -16,6 +16,7 @@ var sequence = [];
 var thenable = {
   then: function(onResolve, onReject) {
     sequence.push(3);
+    assert.sameValue(sequence.length, 3);
     checkSequence(sequence, "thenable.then called");
 
     assert.sameValue(this, thenable);
@@ -23,25 +24,30 @@ var thenable = {
     onResolve('resolved');
 
     sequence.push(4);
+    assert.sameValue(sequence.length, 4);
     checkSequence(sequence, "after resolved");
 
     throw new Error('interrupt flow');
 
     sequence.push(4);
+    assert.sameValue(sequence.length, 4);
     checkSequence(sequence, "duplicate sequence point not pushed");
   }
 };
 
 sequence.push(1);
+assert.sameValue(sequence.length, 1);
 checkSequence(sequence, "no async calls yet");
 
 var p1 = Promise.resolve(thenable);
 
 sequence.push(2);
+assert.sameValue(sequence.length, 2);
 checkSequence(sequence, "thenable.then queued but not yet called");
 
 p1.then(function(q) {
   sequence.push(5);
+  assert.sameValue(sequence.length, 5);
   checkSequence(sequence, "all done");
 
   assert.sameValue(q, 'resolved');

test/built-ins/Promise/resolve/S25.Promise_resolve_foreign_thenable_2.js

@@ -17,6 +17,7 @@ var thenable = {
   then: function(onResolve, onReject) {
 
     sequence.push(3);
+    assert.sameValue(sequence.length, 3);
     checkSequence(sequence, "thenable.then called");
 
     assert.sameValue(this, thenable, "thenable.then called with `thenable` as `this`");
@@ -26,15 +27,18 @@ var thenable = {
 };
 
 sequence.push(1);
+assert.sameValue(sequence.length, 1);
 checkSequence(sequence, "no async calls yet");
 
 var p = Promise.resolve(thenable);
 
 sequence.push(2);
+assert.sameValue(sequence.length, 2);
 checkSequence(sequence, "thenable.then queued but not yet called");
 
 p.then(function(r) {
   sequence.push(4);
+  assert.sameValue(sequence.length, 4);
   checkSequence(sequence, "all done");
 
   assert.sameValue(r, 'resolved');