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Coverage: globalThis[Symbol.unscopables]. Fixes gh-1750

This commit is contained in:
Rick Waldron 2020-09-25 15:47:22 -04:00
parent 21e97fb616
commit bba4fbc259
2 changed files with 132 additions and 0 deletions
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69
src/function-forms/unscopables-with-in-nested-fn.case Normal file
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// Copyright (c) 2020 Rick Waldron. All rights reserved.
// This code is governed by the BSD license found in the LICENSE file.
/*---
desc: Symbol.unscopables behavior across scope boundaries
template: default/*func*.template
esid: sec-symbol.unscopables
info: |
...
Let envRec be lex's EnvironmentRecord.
Let exists be ? envRec.HasBinding(name).
HasBinding
...
If the withEnvironment flag of envRec is false, return true.
Let unscopables be ? Get(bindings, @@unscopables).
If Type(unscopables) is Object, then
Let blocked be ToBoolean(? Get(unscopables, N)).
If blocked is true, return false.
(The `with` Statement) Runtime Semantics: Evaluation
...
Set the withEnvironment flag of newEnv’s EnvironmentRecord to true.
...
flags: [noStrict]
features: [globalThis, Symbol.unscopables]
---*/
//- setup
let count = 0;
var v = 1;
globalThis[Symbol.unscopables] = {
v: true,
};
{
count++;
//- params
x
//- args
10
//- body
(function() {
count++;
with (globalThis) {
count++;
assert.sameValue(v, 1, 'The value of `v` is 1');
}
})();
(function() {
count++;
var v = x;
with (globalThis) {
count++;
assert.sameValue(v, 10, 'The value of `v` is 10');
v = 20;
}
assert.sameValue(v, 20, 'The value of `v` is 20');
assert.sameValue(globalThis.v, 1, 'The value of globalThis.v is 1');
})();
assert.sameValue(v, 1, 'The value of `v` is 1');
assert.sameValue(globalThis.v, 1, 'The value of globalThis.v is 1');
//- teardown
count++;
}
assert.sameValue(count, 6, 'The value of `count` is 6');

63
src/function-forms/unscopables-with.case Normal file
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// Copyright (c) 2020 Rick Waldron. All rights reserved.
// This code is governed by the BSD license found in the LICENSE file.
/*---
desc: Symbol.unscopables behavior across scope boundaries
template: default/*func*.template
esid: sec-symbol.unscopables
info: |
...
Let envRec be lex's EnvironmentRecord.
Let exists be ? envRec.HasBinding(name).
HasBinding
...
If the withEnvironment flag of envRec is false, return true.
Let unscopables be ? Get(bindings, @@unscopables).
If Type(unscopables) is Object, then
Let blocked be ToBoolean(? Get(unscopables, N)).
If blocked is true, return false.
(The `with` Statement) Runtime Semantics: Evaluation
...
Set the withEnvironment flag of newEnv’s EnvironmentRecord to true.
...
flags: [noStrict]
features: [globalThis, Symbol.unscopables]
---*/
//- setup
let count = 0;
var v = 1;
globalThis[Symbol.unscopables] = {
v: true,
};
{
count++;
//- params
x
//- args
10
//- body
count++;
with (globalThis) {
count++;
assert.sameValue(v, undefined, 'The value of `v` is expected to equal `undefined`');
}
count++;
var v = x;
with (globalThis) {
count++;
assert.sameValue(v, 10, 'The value of `v` is 10');
v = 20;
}
assert.sameValue(v, 20, 'The value of `v` is 20');
assert.sameValue(globalThis.v, 1, 'The value of globalThis.v is 1');
//- teardown
count++;
}
assert.sameValue(count, 6, 'The value of `count` is 6');