Add tests for Promise Reject Functions

test/built-ins/Promise/all/reject-deferred.js

@@ -0,0 +1,39 @@
+// Copyright (C) 2016 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+description: Rejecting through deferred invocation of the provided resolving function
+es6id: 25.4.4.1
+info: >
+    [...]
+    6. Let promiseCapability be NewPromiseCapability(C).
+    [...]
+    11. Let result be PerformPromiseAll(iteratorRecord, promiseCapability, C).
+    [...]
+
+    25.4.4.1.1 Runtime Semantics: PerformPromiseAll
+    [...]
+    6. Repeat
+       [...]
+       r. Let result be Invoke(nextPromise, "then", resolveElement,
+          promiseCapability.[[Reject]]»).
+
+    25.4.1.3.1 Promise Reject Functions
+    [...]
+    6. Return RejectPromise(promise, reason).
+---*/
+
+var thenable = {
+  then: function(_, reject) {
+    new Promise(function(resolve) { resolve(); })
+      .then(function() {
+        reject();
+      });
+  }
+};
+
+Promise.all([thenable])
+  .then(function() {
+    $DONE('The promise should not be fulfilled.');
+  }, function(x) {
+    $DONE();
+  });

test/built-ins/Promise/all/reject-ignored-deferred.js

@@ -0,0 +1,53 @@
+// Copyright (C) 2016 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+description: >
+    Resolved promises ignore rejections through deferred invocation of the
+    provided resolving function
+es6id: 25.4.4.1
+info: >
+    [...]
+    6. Let promiseCapability be NewPromiseCapability(C).
+    [...]
+    11. Let result be PerformPromiseAll(iteratorRecord, promiseCapability, C).
+    [...]
+
+    25.4.4.1.1 Runtime Semantics: PerformPromiseAll
+    [...]
+    6. Repeat
+       [...]
+       r. Let result be Invoke(nextPromise, "then", resolveElement,
+          promiseCapability.[[Reject]]»).
+
+    25.4.1.3.1 Promise Reject Functions
+    [...]
+    2. Let promise be the value of F's [[Promise]] internal slot.
+    3. Let alreadyResolved be the value of F's [[AlreadyResolved]] internal
+       slot.
+    4. If alreadyResolved.[[value]] is true, return undefined.
+---*/
+
+var fulfiller = {
+  then: function(resolve) {
+    new Promise(function(resolve) { resolve(); })
+      .then(function() {
+        resolve();
+      });
+  }
+};
+var rejector = {
+  then: function(resolve, reject) {
+    new Promise(function(resolve) { resolve(); })
+      .then(function() {
+        resolve();
+        reject();
+      });
+  }
+};
+
+Promise.all([fulfiller, rejector])
+  .then(function() {
+    $DONE();
+  }, function() {
+    $DONE('The promise should not be rejected.');
+  });

test/built-ins/Promise/all/reject-ignored-immed.js

@@ -0,0 +1,47 @@
+// Copyright (C) 2016 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+description: >
+    Resolved promises ignore rejections through immediate invocation of the
+    provided resolving function
+es6id: 25.4.4.1
+info: >
+    [...]
+    6. Let promiseCapability be NewPromiseCapability(C).
+    [...]
+    11. Let result be PerformPromiseAll(iteratorRecord, promiseCapability, C).
+    [...]
+
+    25.4.4.1.1 Runtime Semantics: PerformPromiseAll
+    [...]
+    6. Repeat
+       [...]
+       r. Let result be Invoke(nextPromise, "then", resolveElement,
+          promiseCapability.[[Reject]]»).
+
+    25.4.1.3.1 Promise Reject Functions
+    [...]
+    2. Let promise be the value of F's [[Promise]] internal slot.
+    3. Let alreadyResolved be the value of F's [[AlreadyResolved]] internal
+       slot.
+    4. If alreadyResolved.[[value]] is true, return undefined.
+---*/
+
+var fulfiller = {
+  then: function(resolve) {
+    resolve();
+  }
+};
+var lateRejector = {
+  then: function(resolve, reject) {
+    resolve();
+    reject();
+  }
+};
+
+Promise.all([fulfiller, lateRejector])
+  .then(function() {
+    $DONE();
+  }, function() {
+    $DONE('The promise should not be rejected.');
+  });

test/built-ins/Promise/all/reject-immed.js

@@ -0,0 +1,36 @@
+// Copyright (C) 2016 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+description: Rejecting through immediate invocation of the provided resolving function
+es6id: 25.4.4.1
+info: >
+    [...]
+    6. Let promiseCapability be NewPromiseCapability(C).
+    [...]
+    11. Let result be PerformPromiseAll(iteratorRecord, promiseCapability, C).
+    [...]
+
+    25.4.4.1.1 Runtime Semantics: PerformPromiseAll
+    [...]
+    6. Repeat
+       [...]
+       r. Let result be Invoke(nextPromise, "then", resolveElement,
+          promiseCapability.[[Reject]]»).
+
+    25.4.1.3.1 Promise Reject Functions
+    [...]
+    6. Return RejectPromise(promise, reason).
+---*/
+
+var thenable = {
+  then: function(_, reject) {
+    reject();
+  }
+};
+
+Promise.all([thenable])
+  .then(function() {
+    $DONE('The promise should not be fulfilled.');
+  }, function(x) {
+    $DONE();
+  });

test/built-ins/Promise/prototype/then/reject-pending-fulfilled.js

@@ -0,0 +1,43 @@
+// Copyright (C) 2016 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+description: Rejecting from a pending promise that is later fulfilled
+es6id: 25.4.5.3
+info: >
+    [...]
+    7. Return PerformPromiseThen(promise, onFulfilled, onRejected,
+       resultCapability).
+
+    25.4.5.3.1 PerformPromiseThen
+    [...]
+    7. If the value of promise's [[PromiseState]] internal slot is "pending",
+       a. Append fulfillReaction as the last element of the List that is the
+          value of promise's [[PromiseFulfillReactions]] internal slot.
+       [...]
+
+    25.4.1.3.1 Promise Reject Functions
+    [...]
+    6. Return RejectPromise(promise, reason).
+---*/
+
+var resolve;
+var thenable = new Promise(function(_resolve) { resolve = _resolve; });
+var p1 = new Promise(function(resolve) { resolve(); });
+var p2;
+
+p2 = p1.then(function() {
+    throw thenable;
+  });
+
+p2.then(function() {
+    $DONE('The promise should not be fulfilled.');
+  }, function(x) {
+    if (x !== thenable) {
+      $DONE('The promise should be rejected with the resolution value of the provided promise.');
+      return;
+    }
+
+    $DONE();
+  });
+
+resolve();

test/built-ins/Promise/prototype/then/reject-pending-rejected.js

@@ -0,0 +1,44 @@
+// Copyright (C) 2016 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+description: Rejecting from a pending promise that is later rejected
+es6id: 25.4.5.3
+info: >
+    [...]
+    7. Return PerformPromiseThen(promise, onFulfilled, onRejected,
+       resultCapability).
+
+    25.4.5.3.1 PerformPromiseThen
+    [...]
+    7. If the value of promise's [[PromiseState]] internal slot is "pending",
+       [...]
+       b. Append rejectReaction as the last element of the List that is the
+          value of promise's [[PromiseRejectReactions]] internal slot.
+    [...]
+
+    25.4.1.3.1 Promise Reject Functions
+    [...]
+    6. Return RejectPromise(promise, reason).
+---*/
+
+var reject;
+var thenable = new Promise(function(resolve) { resolve(); });
+var p1 = new Promise(function(_, _reject) { reject = _reject; });
+var p2;
+
+p2 = p1.then(function() {}, function() {
+    throw thenable;
+  });
+
+p2.then(function() {
+    $DONE('The promise should not be fulfilled.');
+  }, function(x) {
+    if (x !== thenable) {
+      $DONE('The promise should be rejected with the resolution value of the provided promise.');
+      return;
+    }
+
+    $DONE();
+  });
+
+reject();

test/built-ins/Promise/prototype/then/reject-settled-fulfilled.js

@@ -0,0 +1,48 @@
+// Copyright (C) 2016 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+description: Rejecting from a fulfilled promise
+es6id: 25.4.5.3
+info: >
+    [...]
+    7. Return PerformPromiseThen(promise, onFulfilled, onRejected,
+       resultCapability).
+
+    25.4.5.3.1 PerformPromiseThen
+    [...]
+    8. Else if the value of promise's [[PromiseState]] internal slot is
+       "fulfilled",
+       a. Let value be the value of promise's [[PromiseResult]] internal slot.
+       b. EnqueueJob("PromiseJobs", PromiseReactionJob, «fulfillReaction,
+          value»).
+
+    25.4.2.1 PromiseReactionJob
+    [...]
+    7. If handlerResult is an abrupt completion, then
+       a. Let status be Call(promiseCapability.[[Reject]], undefined,
+          «handlerResult.[[value]]»).
+       [...]
+
+    25.4.1.3.1 Promise Reject Functions
+    [...]
+    6. Return RejectPromise(promise, reason).
+---*/
+
+var thenable = new Promise(function(resolve) { resolve(); });
+var p1 = new Promise(function(resolve) { resolve(); });
+var p2;
+
+p2 = p1.then(function() {
+    throw thenable;
+  });
+
+p2.then(function() {
+    $DONE('The promise should not be fulfilled.');
+  }, function(x) {
+    if (x !== thenable) {
+      $DONE('The promise should be rejected with the resolution value of the provided promise.');
+      return;
+    }
+
+    $DONE();
+  });

test/built-ins/Promise/prototype/then/reject-settled-rejected.js

@@ -0,0 +1,48 @@
+// Copyright (C) 2016 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+description: Rejecting from a rejected promise
+es6id: 25.4.5.3
+info: >
+    [...]
+    7. Return PerformPromiseThen(promise, onFulfilled, onRejected,
+       resultCapability).
+
+    25.4.5.3.1 PerformPromiseThen
+    [...]
+    9. Else if the value of promise's [[PromiseState]] internal slot is
+       "rejected",
+       a. Let reason be the value of promise's [[PromiseResult]] internal slot.
+       b. Perform EnqueueJob("PromiseJobs", PromiseReactionJob,
+          «rejectReaction, reason»).
+
+    25.4.2.1 PromiseReactionJob
+    [...]
+    7. If handlerResult is an abrupt completion, then
+       a. Let status be Call(promiseCapability.[[Reject]], undefined,
+          «handlerResult.[[value]]»).
+       [...]
+
+    25.4.1.3.1 Promise Reject Functions
+    [...]
+    6. Return RejectPromise(promise, reason).
+---*/
+
+var thenable = new Promise(function(resolve) { resolve(); });
+var p1 = new Promise(function(_, reject) { reject(); });
+var p2;
+
+p2 = p1.then(function() {}, function() {
+    throw thenable;
+  });
+
+p2.then(function() {
+    $DONE('The promise should not be fulfilled.');
+  }, function(x) {
+    if (x !== thenable) {
+      $DONE('The promise should be rejected with the resolution value of the provided promise.');
+      return;
+    }
+
+    $DONE();
+  });

test/built-ins/Promise/race/reject-deferred.js

@@ -0,0 +1,38 @@
+// Copyright (C) 2016 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+description: Rejecting through deferred invocation of the provided resolving function
+es6id: 25.4.4.3
+info: >
+    [...]
+    6. Let promiseCapability be NewPromiseCapability(C).
+    [...]
+    11. Let result be PerformPromiseRace(iteratorRecord, promiseCapability, C).
+    [...]
+
+    25.4.4.3.1 Runtime Semantics: PerformPromiseRace
+    1. Repeat
+       [...]
+       j. Let result be Invoke(nextPromise, "then",
+          «promiseCapability.[[Resolve]], promiseCapability.[[Reject]]»).
+
+    25.4.1.3.1 Promise Reject Functions
+    [...]
+    6. Return RejectPromise(promise, reason).
+---*/
+
+var thenable = {
+  then: function(_, reject) {
+    new Promise(function(resolve) { resolve(); })
+      .then(function() {
+        reject();
+      });
+  }
+};
+
+Promise.race([thenable])
+  .then(function() {
+    $DONE('The promise should not be fulfilled.');
+  }, function() {
+    $DONE();
+  });

test/built-ins/Promise/race/reject-ignored-deferred.js

@@ -0,0 +1,51 @@
+// Copyright (C) 2016 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+description: >
+    Resolved promises ignore rejections through deferred invocation of the
+    provided resolving function
+es6id: 25.4.4.3
+info: >
+    [...]
+    6. Let promiseCapability be NewPromiseCapability(C).
+    [...]
+    11. Let result be PerformPromiseRace(iteratorRecord, promiseCapability, C).
+    [...]
+
+    25.4.4.3.1 Runtime Semantics: PerformPromiseRace
+    1. Repeat
+       [...]
+       j. Let result be Invoke(nextPromise, "then",
+          «promiseCapability.[[Resolve]], promiseCapability.[[Reject]]»).
+
+    25.4.1.3.1 Promise Reject Functions
+    [...]
+    2. Let promise be the value of F's [[Promise]] internal slot.
+    3. Let alreadyResolved be the value of F's [[AlreadyResolved]] internal
+       slot.
+    4. If alreadyResolved.[[value]] is true, return undefined.
+---*/
+
+var fulfiller = {
+  then: function(resolve) {
+    new Promise(function(resolve) { resolve(); })
+      .then(function() {
+        resolve();
+      });
+  }
+};
+var rejector = {
+  then: function(_, reject) {
+    new Promise(function(resolve) { resolve(); })
+      .then(function() {
+        reject();
+      });
+  }
+};
+
+Promise.race([fulfiller, rejector])
+  .then(function() {
+    $DONE();
+  }, function() {
+    $DONE('The promise should not be rejected.');
+  });

test/built-ins/Promise/race/reject-ignored-immed.js

@@ -0,0 +1,45 @@
+// Copyright (C) 2016 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+description: >
+    Resolved promises ignore rejections through immediate invocation of the
+    provided resolving function
+es6id: 25.4.4.3
+info: >
+    [...]
+    6. Let promiseCapability be NewPromiseCapability(C).
+    [...]
+    11. Let result be PerformPromiseRace(iteratorRecord, promiseCapability, C).
+    [...]
+
+    25.4.4.3.1 Runtime Semantics: PerformPromiseRace
+    1. Repeat
+       [...]
+       j. Let result be Invoke(nextPromise, "then",
+          «promiseCapability.[[Resolve]], promiseCapability.[[Reject]]»).
+
+    25.4.1.3.1 Promise Reject Functions
+    [...]
+    2. Let promise be the value of F's [[Promise]] internal slot.
+    3. Let alreadyResolved be the value of F's [[AlreadyResolved]] internal
+       slot.
+    4. If alreadyResolved.[[value]] is true, return undefined.
+---*/
+
+var fulfiller = {
+  then: function(resolve) {
+    resolve();
+  }
+};
+var rejector = {
+  then: function(_, reject) {
+    reject();
+  }
+};
+
+Promise.race([fulfiller, rejector])
+  .then(function() {
+    $DONE();
+  }, function() {
+    $DONE('The promise should not be rejected.');
+  });

test/built-ins/Promise/race/reject-immed.js

@@ -0,0 +1,35 @@
+// Copyright (C) 2016 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+description: Rejecting through immediate invocation of the provided resolving function
+es6id: 25.4.4.3
+info: >
+    [...]
+    6. Let promiseCapability be NewPromiseCapability(C).
+    [...]
+    11. Let result be PerformPromiseRace(iteratorRecord, promiseCapability, C).
+    [...]
+
+    25.4.4.3.1 Runtime Semantics: PerformPromiseRace
+    1. Repeat
+       [...]
+       j. Let result be Invoke(nextPromise, "then",
+          «promiseCapability.[[Resolve]], promiseCapability.[[Reject]]»).
+
+    25.4.1.3.1 Promise Reject Functions
+    [...]
+    6. Return RejectPromise(promise, reason).
+---*/
+
+var thenable = {
+  then: function(_, reject) {
+    reject();
+  }
+};
+
+Promise.race([thenable])
+  .then(function() {
+    $DONE('The promise should not be fulfilled.');
+  }, function() {
+    $DONE();
+  });

test/built-ins/Promise/reject-ignored-via-abrupt.js

@@ -0,0 +1,33 @@
+// Copyright (C) 2016 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+description: Resolved promises ignore rejections through an abrupt completion
+es6id: 25.4.3.1
+info: >
+    [...]
+    9. Let completion be Call(executor, undefined,
+       «resolvingFunctions.[[Resolve]], resolvingFunctions.[[Reject]]»).
+    10. If completion is an abrupt completion, then
+        a. Let status be Call(resolvingFunctions.[[Reject]], undefined,
+           «completion.[[value]]»).
+        b. ReturnIfAbrupt(status).
+    11. Return promise.
+
+    25.4.1.3.1 Promise Reject Functions
+    [...]
+    3. Let alreadyResolved be the value of F's [[AlreadyResolved]] internal
+       slot.
+    4. If alreadyResolved.[[value]] is true, return undefined.
+---*/
+
+var thenable = new Promise(function() {});
+var p = new Promise(function(resolve) {
+  resolve();
+  throw thenable;
+});
+
+p.then(function() {
+    $DONE();
+  }, function() {
+    $DONE('The promise should not be rejected.');
+  });

test/built-ins/Promise/reject-ignored-via-fn-deferred.js

@@ -0,0 +1,37 @@
+// Copyright (C) 2016 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+description: >
+    Resolved promises ignore rejections through deferred invocation of the
+    provided resolving function
+es6id: 25.4.3.1
+info: >
+    [...]
+    9. Let completion be Call(executor, undefined,
+       «resolvingFunctions.[[Resolve]], resolvingFunctions.[[Reject]]»).
+    10. If completion is an abrupt completion, then
+        [...]
+    11. Return promise.
+
+    25.4.1.3.1 Promise Reject Functions
+    [...]
+    3. Let alreadyResolved be the value of F's [[AlreadyResolved]] internal
+       slot.
+    4. If alreadyResolved.[[value]] is true, return undefined.
+---*/
+
+var thenable = new Promise(function() {});
+var resolve, reject;
+var p = new Promise(function(_resolve, _reject) {
+  resolve = _resolve;
+  reject = _reject;
+});
+
+p.then(function() {
+    $DONE();
+  }, function() {
+    $DONE('The promise should not be rejected.');
+  });
+
+resolve();
+reject(thenable);

test/built-ins/Promise/reject-ignored-via-fn-immed.js

@@ -0,0 +1,33 @@
+// Copyright (C) 2016 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+description: >
+    Resolved promises ignore rejections through immediate invocation of the
+    provided resolving function
+es6id: 25.4.3.1
+info: >
+    [...]
+    9. Let completion be Call(executor, undefined,
+       «resolvingFunctions.[[Resolve]], resolvingFunctions.[[Reject]]»).
+    10. If completion is an abrupt completion, then
+        [...]
+    11. Return promise.
+
+    25.4.1.3.1 Promise Reject Functions
+    [...]
+    3. Let alreadyResolved be the value of F's [[AlreadyResolved]] internal
+       slot.
+    4. If alreadyResolved.[[value]] is true, return undefined.
+---*/
+
+var thenable = new Promise(function() {});
+var p = new Promise(function(resolve, reject) {
+  resolve();
+  reject(thenable);
+});
+
+p.then(function() {
+    $DONE();
+  }, function() {
+    $DONE('The promise should not be rejected.');
+  });

test/built-ins/Promise/reject-via-abrupt.js

@@ -0,0 +1,35 @@
+// Copyright (C) 2016 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+description: Rejecting through an abrupt completion
+es6id: 25.4.3.1
+info: >
+    [...]
+    9. Let completion be Call(executor, undefined,
+       «resolvingFunctions.[[Resolve]], resolvingFunctions.[[Reject]]»).
+    10. If completion is an abrupt completion, then
+        a. Let status be Call(resolvingFunctions.[[Reject]], undefined,
+           «completion.[[value]]»).
+        b. ReturnIfAbrupt(status).
+    11. Return promise.
+
+    25.4.1.3.1 Promise Reject Functions
+    [...]
+    6. Return RejectPromise(promise, reason).
+---*/
+
+var thenable = new Promise(function() {});
+var p = new Promise(function() {
+  throw thenable;
+});
+
+p.then(function() {
+    $DONE('The promise should not be fulfilled.');
+  }, function(x) {
+    if (x !== thenable) {
+      $DONE('The promise should be rejected with the resolution value.');
+      return;
+    }
+
+    $DONE();
+  });

test/built-ins/Promise/reject-via-fn-deferred.js

@@ -0,0 +1,36 @@
+// Copyright (C) 2016 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+description: Rejecting through deferred invocation of the provided resolving function
+es6id: 25.4.3.1
+info: >
+    [...]
+    9. Let completion be Call(executor, undefined,
+       «resolvingFunctions.[[Resolve]], resolvingFunctions.[[Reject]]»).
+    10. If completion is an abrupt completion, then
+        [...]
+    11. Return promise.
+
+    25.4.1.3.1 Promise Reject Functions
+    [...]
+    6. Return RejectPromise(promise, reason).
+---*/
+
+var thenable = new Promise(function() {});
+var reject;
+var p = new Promise(function(_, _reject) {
+  reject = _reject;
+});
+
+p.then(function() {
+    $DONE('The promise should not be fulfilled.');
+  }, function(x) {
+    if (x !== thenable) {
+      $DONE('The promise should be rejected with the resolution value.');
+      return;
+    }
+
+    $DONE();
+  });
+
+reject(thenable);

test/built-ins/Promise/reject-via-fn-immed.js

@@ -0,0 +1,33 @@
+// Copyright (C) 2016 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+description: Rejecting through immediate invocation of the provided resolving function
+es6id: 25.4.3.1
+info: >
+    [...]
+    9. Let completion be Call(executor, undefined,
+       «resolvingFunctions.[[Resolve]], resolvingFunctions.[[Reject]]»).
+    10. If completion is an abrupt completion, then
+        [...]
+    11. Return promise.
+
+    25.4.1.3.1 Promise Reject Functions
+    [...]
+    6. Return RejectPromise(promise, reason).
+---*/
+
+var thenable = new Promise(function() {});
+var p = new Promise(function(_, reject) {
+  reject(thenable);
+});
+
+p.then(function() {
+    $DONE('The promise should not be fulfilled.');
+  }, function(x) {
+    if (x !== thenable) {
+      $DONE('The promise should be rejected with the resolution value.');
+      return;
+    }
+
+    $DONE();
+  });

test/built-ins/Promise/reject/S25.4.4.4_A2.1_T1.js

@@ -3,8 +3,14 @@
 
 /*---
 info: >
-   Promise.reject
-es6id: S25.4.4.4_A2.1_T1
+    [...]
+    5. Let rejectResult be Call(promiseCapability.[[Reject]], undefined, «r»).
+    [...]
+
+    25.4.1.3.1 Promise Reject Functions
+    [...]
+    6. Return RejectPromise(promise, reason).
+es6id: 25.4.4.4
 author: Sam Mikes
 description: Promise.reject creates a new settled promise
 ---*/