Add test cases for the spread operator

src/spread/mult-empty.case

@@ -0,0 +1,27 @@
+// Copyright (C) 2016 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+desc: Spread operator following other arguments when no iteration occurs
+template: default
+info: |
+    12.3.6.1 Runtime Semantics: ArgumentListEvaluation
+
+    ArgumentList : ArgumentList , ... AssignmentExpression
+
+    1. Let precedingArgs be the result of evaluating ArgumentList.
+    2. Let spreadRef be the result of evaluating AssignmentExpression.
+    3. Let iterator be GetIterator(GetValue(spreadRef) ).
+    4. ReturnIfAbrupt(iterator).
+    5. Repeat
+       a. Let next be IteratorStep(iterator).
+       b. ReturnIfAbrupt(next).
+       c. If next is false, return precedingArgs.
+---*/
+
+//- args
+1, 2, 3, ...[]
+//- body
+assert.sameValue(arguments.length, 3);
+assert.sameValue(arguments[0], 1);
+assert.sameValue(arguments[1], 2);
+assert.sameValue(arguments[2], 3);

src/spread/mult-err-expr-throws.case

@@ -0,0 +1,20 @@
+// Copyright (C) 2016 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+desc: Spread operator following other arguments when evaluation throws
+template: error
+info: |
+    12.3.6.1 Runtime Semantics: ArgumentListEvaluation
+
+    ArgumentList : ArgumentList , ... AssignmentExpression
+
+    1. Let precedingArgs be the result of evaluating ArgumentList.
+    2. Let spreadRef be the result of evaluating AssignmentExpression.
+    3. Let iterator be GetIterator(GetValue(spreadRef) ).
+    4. ReturnIfAbrupt(iterator).
+---*/
+
+//- error
+Test262Error
+//- args
+0, ...function*() { throw new Test262Error(); }()

src/spread/mult-err-iter-get-value.case

@@ -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.
+/*---
+desc: >
+    Spread operator following other arguments when GetIterator fails
+    (@@iterator function return value)
+template: error
+features: [Symbol.iterator]
+info: |
+    12.3.6.1 Runtime Semantics: ArgumentListEvaluation
+
+    ArgumentList : ArgumentList , ... AssignmentExpression
+
+    1. Let precedingArgs be the result of evaluating ArgumentList.
+    2. Let spreadRef be the result of evaluating AssignmentExpression.
+    3. Let iterator be GetIterator(GetValue(spreadRef) ).
+    4. ReturnIfAbrupt(iterator).
+
+    7.4.1 GetIterator ( obj, method )
+
+    [...]
+    2. Let iterator be ? Call(method, obj).
+    3. If Type(iterator) is not Object, throw a TypeError exception.
+---*/
+
+//- setup
+var iter = {};
+Object.defineProperty(iter, Symbol.iterator, {
+  get: function() {
+    return null;
+  }
+});
+//- error
+TypeError
+//- args
+0, ...iter

src/spread/mult-err-itr-get-call.case

@@ -0,0 +1,34 @@
+// Copyright (C) 2016 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+desc: >
+    Spread operator following other arguments when GetIterator fails
+    (@@iterator function invocation)
+template: error
+features: [Symbol.iterator]
+info: |
+    12.3.6.1 Runtime Semantics: ArgumentListEvaluation
+
+    ArgumentList : ArgumentList , ... AssignmentExpression
+
+    1. Let precedingArgs be the result of evaluating ArgumentList.
+    2. Let spreadRef be the result of evaluating AssignmentExpression.
+    3. Let iterator be GetIterator(GetValue(spreadRef) ).
+    4. ReturnIfAbrupt(iterator).
+
+    7.4.1 GetIterator ( obj, method )
+
+    [...]
+    3. Let iterator be Call(method,obj).
+    4. ReturnIfAbrupt(iterator).
+---*/
+
+//- setup
+var iter = {};
+iter[Symbol.iterator] = function() {
+  throw new Test262Error();
+};
+//- error
+Test262Error
+//- args
+0, ...iter

src/spread/mult-err-itr-get-get.case

@@ -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.
+/*---
+desc: >
+    Spread operator following other arguments when GetIterator fails
+    (@@iterator property access)
+template: error
+features: [Symbol.iterator]
+info: |
+    12.3.6.1 Runtime Semantics: ArgumentListEvaluation
+
+    ArgumentList : ArgumentList , ... AssignmentExpression
+
+    1. Let precedingArgs be the result of evaluating ArgumentList.
+    2. Let spreadRef be the result of evaluating AssignmentExpression.
+    3. Let iterator be GetIterator(GetValue(spreadRef) ).
+    4. ReturnIfAbrupt(iterator).
+
+    7.4.1 GetIterator ( obj, method )
+
+    1. If method was not passed, then
+       a. Let method be ? GetMethod(obj, @@iterator).
+---*/
+
+//- setup
+var iter = {};
+Object.defineProperty(iter, Symbol.iterator, {
+  get: function() {
+    throw new Test262Error();
+  }
+});
+//- error
+Test262Error
+//- args
+0, ...iter

src/spread/mult-err-itr-step.case

@@ -0,0 +1,42 @@
+// Copyright (C) 2016 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+desc: Spread operator following other arguments when IteratorStep fails
+template: error
+features: [Symbol.iterator]
+info: |
+    12.3.6.1 Runtime Semantics: ArgumentListEvaluation
+
+    ArgumentList : ArgumentList , ... AssignmentExpression
+
+    1. Let precedingArgs be the result of evaluating ArgumentList.
+    2. Let spreadRef be the result of evaluating AssignmentExpression.
+    3. Let iterator be GetIterator(GetValue(spreadRef) ).
+    4. ReturnIfAbrupt(iterator).
+
+    7.4.5 IteratorStep ( iterator )
+
+    1. Let result be IteratorNext(iterator).
+    2. ReturnIfAbrupt(result).
+
+    7.4.2 IteratorNext ( iterator, value )
+
+    1. If value was not passed, then
+       a. Let result be Invoke(iterator, "next", « »).
+    [...]
+    3. ReturnIfAbrupt(result).
+---*/
+
+//- setup
+var iter = {};
+iter[Symbol.iterator] = function() {
+  return {
+    next: function() {
+      throw new Test262Error();
+    }
+  };
+};
+//- error
+Test262Error
+//- args
+0, ...iter

src/spread/mult-err-itr-value.case

@@ -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.
+/*---
+desc: Spread operator following other arguments when IteratorValue fails
+template: error
+features: [Symbol.iterator]
+info: |
+    12.3.6.1 Runtime Semantics: ArgumentListEvaluation
+
+    ArgumentList : ArgumentList , ... AssignmentExpression
+
+    1. Let precedingArgs be the result of evaluating ArgumentList.
+    2. Let spreadRef be the result of evaluating AssignmentExpression.
+    3. Let iterator be GetIterator(GetValue(spreadRef) ).
+    4. ReturnIfAbrupt(iterator).
+
+    7.4.4 IteratorValue ( iterResult )
+
+    1. Assert: Type(iterResult) is Object.
+    2. Return Get(iterResult, "value").
+
+    7.3.1 Get (O, P)
+
+    [...]
+    3. Return O.[[Get]](P, O).
+---*/
+
+//- setup
+var iter = {};
+var poisonedValue = Object.defineProperty({}, 'value', {
+  get: function() {
+    throw new Test262Error();
+  }
+});
+iter[Symbol.iterator] = function() {
+  return {
+    next: function() {
+      return poisonedValue;
+    }
+  };
+};
+//- error
+Test262Error
+//- args
+0, ...iter

src/spread/mult-err-unresolvable.case

@@ -0,0 +1,27 @@
+// Copyright (C) 2016 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+desc: Spread operator following other arguments when reference is unresolvable
+template: error
+info: |
+    12.3.6.1 Runtime Semantics: ArgumentListEvaluation
+
+    ArgumentList : ArgumentList , ... AssignmentExpression
+
+    1. Let precedingArgs be the result of evaluating ArgumentList.
+    2. Let spreadRef be the result of evaluating AssignmentExpression.
+    3. Let iterator be GetIterator(GetValue(spreadRef) ).
+    4. ReturnIfAbrupt(iterator).
+
+    6.2.3.1 GetValue (V)
+
+    1. ReturnIfAbrupt(V).
+    2. If Type(V) is not Reference, return V.
+    3. Let base be GetBase(V).
+    4. If IsUnresolvableReference(V), throw a ReferenceError exception.
+---*/
+
+//- error
+ReferenceError
+//- args
+0, ...unresolvableReference

src/spread/mult-iter.case

@@ -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.
+/*---
+desc: Spread operator following other arguments with a valid iterator
+template: default
+features: [Symbol.iterator]
+info: |
+    12.3.6.1 Runtime Semantics: ArgumentListEvaluation
+
+    ArgumentList : ... AssignmentExpression
+
+    1. Let list be an empty List.
+    2. Let spreadRef be the result of evaluating AssignmentExpression.
+    3. Let spreadObj be GetValue(spreadRef).
+    4. Let iterator be GetIterator(spreadObj).
+    5. ReturnIfAbrupt(iterator).
+    6. Repeat
+       a. Let next be IteratorStep(iterator).
+       b. ReturnIfAbrupt(next).
+       c. If next is false, return list.
+       d. Let nextArg be IteratorValue(next).
+       e. ReturnIfAbrupt(nextArg).
+       f. Append nextArg as the last element of list.
+---*/
+
+//- setup
+var iter = {};
+iter[Symbol.iterator] = function() {
+  var nextCount = 3;
+  return {
+    next: function() {
+      nextCount += 1;
+      return { done: nextCount === 6, value: nextCount };
+    }
+  };
+};
+//- args
+1, 2, 3, ...iter
+//- body
+assert.sameValue(arguments.length, 5);
+assert.sameValue(arguments[0], 1);
+assert.sameValue(arguments[1], 2);
+assert.sameValue(arguments[2], 3);
+assert.sameValue(arguments[3], 4);
+assert.sameValue(arguments[4], 5);

src/spread/sngl-empty.case

@@ -0,0 +1,27 @@
+// Copyright (C) 2016 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+desc: Spread operator applied to the only argument when no iteration occurs
+template: default
+info: |
+    12.3.6.1 Runtime Semantics: ArgumentListEvaluation
+
+    ArgumentList : ... AssignmentExpression
+
+    1. Let list be an empty List.
+    2. Let spreadRef be the result of evaluating AssignmentExpression.
+    3. Let spreadObj be GetValue(spreadRef).
+    4. Let iterator be GetIterator(spreadObj).
+    5. ReturnIfAbrupt(iterator).
+    6. Repeat
+       a. Let next be IteratorStep(iterator).
+       b. ReturnIfAbrupt(next).
+       c. If next is false, return list.
+       [...]
+---*/
+
+//- params
+//- args
+...[]
+//- body
+assert.sameValue(arguments.length, 0);

src/spread/sngl-err-itr-get-call.case

@@ -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.
+/*---
+desc: >
+    Spread operator applied to the only argument when GetIterator fails
+    (@@iterator function invocation)
+template: error
+features: [Symbol.iterator]
+info: |
+    12.3.6.1 Runtime Semantics: ArgumentListEvaluation
+
+    ArgumentList : ... AssignmentExpression
+
+    1. Let list be an empty List.
+    2. Let spreadRef be the result of evaluating AssignmentExpression.
+    3. Let spreadObj be GetValue(spreadRef).
+    4. Let iterator be GetIterator(spreadObj).
+    5. ReturnIfAbrupt(iterator).
+
+    7.4.1 GetIterator ( obj, method )
+
+    [...]
+    3. Let iterator be Call(method,obj).
+    4. ReturnIfAbrupt(iterator).
+---*/
+
+//- setup
+var iter = {};
+iter[Symbol.iterator] = function() {
+  throw new Test262Error();
+};
+//- error
+Test262Error
+//- args
+...iter

src/spread/sngl-err-itr-get-get.case

@@ -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.
+/*---
+desc: >
+    Spread operator applied to the only argument when GetIterator fails
+    (@@iterator property access)
+template: error
+features: [Symbol.iterator]
+info: |
+    12.3.6.1 Runtime Semantics: ArgumentListEvaluation
+
+    ArgumentList : ... AssignmentExpression
+
+    1. Let list be an empty List.
+    2. Let spreadRef be the result of evaluating AssignmentExpression.
+    3. Let spreadObj be GetValue(spreadRef).
+    4. Let iterator be GetIterator(spreadObj).
+    5. ReturnIfAbrupt(iterator).
+
+    7.4.1 GetIterator ( obj, method )
+
+    1. If method was not passed, then
+       a. Let method be ? GetMethod(obj, @@iterator).
+---*/
+
+//- setup
+var iter = {};
+Object.defineProperty(iter, Symbol.iterator, {
+  get: function() {
+    throw new Test262Error();
+  }
+});
+//- error
+Test262Error
+//- args
+...iter

src/spread/sngl-err-itr-get-value.case

@@ -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.
+/*---
+desc: >
+    Spread operator applied to the only argument when GetIterator fails
+    (@@iterator function return value)
+template: error
+features: [Symbol.iterator]
+info: |
+    12.3.6.1 Runtime Semantics: ArgumentListEvaluation
+
+    ArgumentList : ... AssignmentExpression
+
+    1. Let list be an empty List.
+    2. Let spreadRef be the result of evaluating AssignmentExpression.
+    3. Let spreadObj be GetValue(spreadRef).
+    4. Let iterator be GetIterator(spreadObj).
+    5. ReturnIfAbrupt(iterator).
+
+    7.4.1 GetIterator ( obj, method )
+
+    [...]
+    2. Let iterator be ? Call(method, obj).
+    3. If Type(iterator) is not Object, throw a TypeError exception.
+---*/
+
+//- setup
+var iter = {};
+iter[Symbol.iterator] = function() {
+  return null;
+};
+//- error
+TypeError
+//- args
+...iter

src/spread/sngl-err-itr-step.case

@@ -0,0 +1,46 @@
+// Copyright (C) 2016 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+desc: Spread operator applied to the only argument when IteratorStep fails
+template: error
+features: [Symbol.iterator]
+info: |
+    12.3.6.1 Runtime Semantics: ArgumentListEvaluation
+
+    ArgumentList : ... AssignmentExpression
+
+    1. Let list be an empty List.
+    2. Let spreadRef be the result of evaluating AssignmentExpression.
+    3. Let spreadObj be GetValue(spreadRef).
+    4. Let iterator be GetIterator(spreadObj).
+    5. ReturnIfAbrupt(iterator).
+    6. Repeat
+       a. Let next be IteratorStep(iterator).
+       b. ReturnIfAbrupt(next).
+
+    7.4.5 IteratorStep ( iterator )
+
+    1. Let result be IteratorNext(iterator).
+    2. ReturnIfAbrupt(result).
+
+    7.4.2 IteratorNext ( iterator, value )
+
+    1. If value was not passed, then
+       a. Let result be Invoke(iterator, "next", « »).
+    [...]
+    3. ReturnIfAbrupt(result).
+---*/
+
+//- setup
+var iter = {};
+iter[Symbol.iterator] = function() {
+  return {
+    next: function() {
+      throw new Test262Error();
+    }
+  };
+};
+//- error
+Test262Error
+//- args
+...iter

src/spread/sngl-err-itr-value.case

@@ -0,0 +1,52 @@
+// Copyright (C) 2016 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+desc: Spread operator applied to the only argument when IteratorValue fails
+template: error
+features: [Symbol.iterator]
+info: |
+    12.3.6.1 Runtime Semantics: ArgumentListEvaluation
+
+    ArgumentList : ... AssignmentExpression
+
+    1. Let list be an empty List.
+    2. Let spreadRef be the result of evaluating AssignmentExpression.
+    3. Let spreadObj be GetValue(spreadRef).
+    4. Let iterator be GetIterator(spreadObj).
+    5. ReturnIfAbrupt(iterator).
+    6. Repeat
+       a. Let next be IteratorStep(iterator).
+       b. ReturnIfAbrupt(next).
+       c. If next is false, return list.
+       d. Let nextArg be IteratorValue(next).
+       e. ReturnIfAbrupt(nextArg).
+
+    7.4.4 IteratorValue ( iterResult )
+
+    1. Assert: Type(iterResult) is Object.
+    2. Return Get(iterResult, "value").
+
+    7.3.1 Get (O, P)
+
+    [...]
+    3. Return O.[[Get]](P, O).
+---*/
+
+//- setup
+var iter = {};
+var poisonedValue = Object.defineProperty({}, 'value', {
+  get: function() {
+    throw new Test262Error();
+  }
+});
+iter[Symbol.iterator] = function() {
+  return {
+    next: function() {
+      return poisonedValue;
+    }
+  };
+};
+//- error
+Test262Error
+//- args
+...iter

src/spread/sngl-err-unresolvable.case

@@ -0,0 +1,28 @@
+// Copyright (C) 2016 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+desc: Spread operator applied to the only argument when reference is unresolvable
+template: error
+info: |
+    12.3.6.1 Runtime Semantics: ArgumentListEvaluation
+
+    ArgumentList : ... AssignmentExpression
+
+    1. Let list be an empty List.
+    2. Let spreadRef be the result of evaluating AssignmentExpression.
+    3. Let spreadObj be GetValue(spreadRef).
+    4. Let iterator be GetIterator(spreadObj).
+    5. ReturnIfAbrupt(iterator).
+
+    6.2.3.1 GetValue (V)
+
+    1. ReturnIfAbrupt(V).
+    2. If Type(V) is not Reference, return V.
+    3. Let base be GetBase(V).
+    4. If IsUnresolvableReference(V), throw a ReferenceError exception.
+---*/
+
+//- error
+ReferenceError
+//- args
+...unresolvableReference