Add tests for AggregateError (tc39#2406)

This covers part of the Promise.any proposal

features.txt

@@ -153,6 +153,11 @@ coalesce-expression
 # https://github.com/tc39-transfer/proposal-intl-displaynames
 Intl.DisplayNames
 
+# Promise.any
+# https://github.com/tc39/proposal-promise-any
+Promise.any
+AggregateError
+
 ## Standard language features
 #
 # Language features that have been included in a published version of the

test/built-ins/AggregateError/errors-iterabletolist-failures.js

@@ -0,0 +1,183 @@
+// Copyright (C) 2019 Leo Balter. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-aggregate-error
+description: >
+  Return abrupt completion from IterableToList(errors)
+info: |
+  AggregateError ( errors, message )
+
+  ...
+  3. Let errorsList be ? IterableToList(errors).
+  4. Set O.[[AggregateErrors]] to errorsList.
+  ...
+  6. Return O.
+
+  Runtime Semantics: IterableToList ( items [ , method ] )
+
+  1. If method is present, then
+    ...
+  2. Else,
+    b. Let iteratorRecord be ? GetIterator(items, sync).
+  3. Let values be a new empty List.
+  4. Let next be true.
+  5. Repeat, while next is not false
+    a. Set next to ? IteratorStep(iteratorRecord).
+    b. If next is not false, then
+      i. Let nextValue be ? IteratorValue(next).
+      ii. Append nextValue to the end of the List values.
+  6. Return values.
+
+  GetIterator ( obj [ , hint [ , method ] ] )
+
+  ...
+  3. If method is not present, then
+    a. If hint is async, then
+      ...
+    b. Otherwise, set method to ? GetMethod(obj, @@iterator).
+  4. Let iterator be ? Call(method, obj).
+  5. If Type(iterator) is not Object, throw a TypeError exception.
+  6. Let nextMethod be ? GetV(iterator, "next").
+  ...
+  8. Return iteratorRecord.
+features: [AggregateError, Symbol.iterator]
+---*/
+
+var case1 = {
+  get [Symbol.iterator]() {
+    throw new Test262Error();
+  }
+};
+
+assert.throws(Test262Error, () => {
+  var obj = new AggregateError(case1);
+}, 'get Symbol.iterator');
+
+var case2 = {
+  get [Symbol.iterator]() {
+    return {};
+  }
+};
+
+assert.throws(TypeError, () => {
+  var obj = new AggregateError(case2);
+}, 'GetMethod(obj, @@iterator) abrupts from non callable');
+
+var case3 = {
+  [Symbol.iterator]() {
+    throw new Test262Error();
+  }
+};
+
+assert.throws(Test262Error, () => {
+  var obj = new AggregateError(case3);
+}, 'Abrupt from @@iterator call');
+
+var case4 = {
+  [Symbol.iterator]() {
+    return 'a string';
+  }
+};
+
+assert.throws(TypeError, () => {
+  var obj = new AggregateError(case4);
+}, '@@iterator call returns a string');
+
+var case5 = {
+  [Symbol.iterator]() {
+    return undefined;
+  }
+};
+
+assert.throws(TypeError, () => {
+  var obj = new AggregateError(case5);
+}, '@@iterator call returns undefined');
+
+var case6 = {
+  [Symbol.iterator]() {
+    return {
+      get next() {
+        throw new Test262Error();
+      }
+    }
+  }
+};
+
+assert.throws(Test262Error, () => {
+  var obj = new AggregateError(case6);
+}, 'GetV(iterator, next) returns abrupt');
+
+var case7 = {
+  [Symbol.iterator]() {
+    return {
+      get next() {
+        return {};
+      }
+    }
+  }
+};
+
+assert.throws(TypeError, () => {
+  var obj = new AggregateError(case7);
+}, 'GetV(iterator, next) returns a non callable');
+
+var case8 = {
+  [Symbol.iterator]() {
+    return {
+      next() {
+        throw new Test262Error();
+      }
+    }
+  }
+};
+
+assert.throws(Test262Error, () => {
+  var obj = new AggregateError(case8);
+}, 'abrupt from iterator.next()');
+
+var case9 = {
+  [Symbol.iterator]() {
+    return {
+      next() {
+        return undefined;
+      }
+    }
+  }
+};
+
+assert.throws(TypeError, () => {
+  var obj = new AggregateError(case9);
+}, 'iterator.next() returns undefined');
+
+var case10 = {
+  [Symbol.iterator]() {
+    return {
+      next() {
+        return 'a string';
+      }
+    }
+  }
+};
+
+assert.throws(TypeError, () => {
+  var obj = new AggregateError(case10);
+}, 'iterator.next() returns a string');
+
+var case11 = {
+  [Symbol.iterator]() {
+    return {
+      next() {
+        return {
+          get done() {
+            throw new Test262Error();
+          }
+        };
+      }
+    }
+  }
+};
+
+assert.throws(Test262Error, () => {
+  var obj = new AggregateError(case11);
+}, 'IteratorCompete abrupts getting the done property');

test/built-ins/AggregateError/errors-iterabletolist.js

@@ -0,0 +1,69 @@
+// Copyright (C) 2019 Leo Balter. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-aggregate-error
+description: >
+  Iteration of errors
+info: |
+  AggregateError ( errors, message )
+
+  ...
+  3. Let errorsList be ? IterableToList(errors).
+  4. Set O.[[AggregateErrors]] to errorsList.
+  ...
+  6. Return O.
+
+  Runtime Semantics: IterableToList ( items [ , method ] )
+
+  1. If method is present, then
+    ...
+  2. Else,
+    b. Let iteratorRecord be ? GetIterator(items, sync).
+  3. Let values be a new empty List.
+  4. Let next be true.
+  5. Repeat, while next is not false
+    a. Set next to ? IteratorStep(iteratorRecord).
+    b. If next is not false, then
+      i. Let nextValue be ? IteratorValue(next).
+      ii. Append nextValue to the end of the List values.
+  6. Return values.
+
+  GetIterator ( obj [ , hint [ , method ] ] )
+
+  ...
+  3. If method is not present, then
+    a. If hint is async, then
+      ...
+    b. Otherwise, set method to ? GetMethod(obj, @@iterator).
+  4. Let iterator be ? Call(method, obj).
+  5. If Type(iterator) is not Object, throw a TypeError exception.
+  6. Let nextMethod be ? GetV(iterator, "next").
+  ...
+  8. Return iteratorRecord.
+features: [AggregateError, Symbol.iterator]
+includes: [compareArray.js]
+---*/
+
+var count = 0;
+var values = [];
+var case1 = {
+  [Symbol.iterator]() {
+    return {
+      next() {
+        count += 1;
+        return {
+          done: count === 3,
+          get value() {
+            values.push(count)
+          }
+        };
+      }
+    };
+  }
+};
+
+new AggregateError(case1);
+
+assert.sameValue(count, 3);
+assert.compareArray(values, [1, 2]);

test/built-ins/AggregateError/length.js

@@ -0,0 +1,32 @@
+// Copyright (C) 2019 Leo Balter. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-aggregate-error
+description: AggregateError.length property descriptor
+info: |
+  AggregateError ( errors, message )
+
+  17 ECMAScript Standard Built-in Objects
+
+  Every built-in function object, including constructors, has a length
+  property whose value is an integer. Unless otherwise specified, this
+  value is equal to the largest number of named arguments shown in the
+  subclause headings for the function description. Optional parameters
+  (which are indicated with brackets: [ ]) or rest parameters (which
+  are shown using the form «...name») are not included in the default
+  argument count.
+
+  Unless otherwise specified, the length property of a built-in
+  function object has the attributes { [[Writable]]: false,
+  [[Enumerable]]: false, [[Configurable]]: true }.
+includes: [propertyHelper.js]
+features: [AggregateError]
+---*/
+
+verifyProperty(AggregateError, 'length', {
+  value: 2,
+  writable: false,
+  enumerable: false,
+  configurable: true
+});

test/built-ins/AggregateError/message-method-prop-cast.js

@@ -0,0 +1,69 @@
+// Copyright (C) 2019 Leo Balter. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-aggregate-error
+description: >
+  Cast ToString values of message in the created method property
+info: |
+  AggregateError ( errors, message )
+
+  ...
+  5. If message is not undefined, then
+    a. Let msg be ? ToString(message).
+    b. Perform ! CreateMethodProperty(O, "message", msg).
+  6. Return O.
+
+  CreateMethodProperty ( O, P, V )
+
+  ...
+  3. Let newDesc be the PropertyDescriptor { [[Value]]: V, [[Writable]]: true, [[Enumerable]]: false, [[Configurable]]: true }.
+  4. Return ? O.[[DefineOwnProperty]](P, newDesc).
+features: [AggregateError]
+includes: [propertyHelper.js]
+---*/
+
+var case1 = new AggregateError([], 42);
+
+verifyProperty(case1, 'message', {
+  value: '42',
+  writable: true,
+  enumerable: false,
+  configurable: true,
+});
+
+var case2 = new AggregateError([], false);
+
+verifyProperty(case2, 'message', {
+  value: 'false',
+  writable: true,
+  enumerable: false,
+  configurable: true,
+});
+
+var case3 = new AggregateError([], true);
+
+verifyProperty(case3, 'message', {
+  value: 'true',
+  writable: true,
+  enumerable: false,
+  configurable: true,
+});
+
+var case4 = new AggregateError([], { toString() { return 'string'; }});
+
+verifyProperty(case4, 'message', {
+  value: 'string',
+  writable: true,
+  enumerable: false,
+  configurable: true,
+});
+
+var case5 = new AggregateError([], null);
+
+verifyProperty(case5, 'message', {
+  value: 'null',
+  writable: true,
+  enumerable: false,
+  configurable: true,
+});