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Add test for TLA DFS invariant #2989

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May 14, 2021
Merged

Add test for TLA DFS invariant #2989

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4 changes: 4 additions & 0 deletions test/language/module-code/top-level-await/dfs-invariant-async_FIXTURE.js
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// Copyright (C) 2021 the V8 project authors. All rights reserved.
// This code is governed by the BSD license found in the LICENSE file.
await 0;
globalThis.test262 = 'async';
4 changes: 4 additions & 0 deletions test/language/module-code/top-level-await/dfs-invariant-direct-1_FIXTURE.js
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// Copyright (C) 2021 the V8 project authors. All rights reserved.
// This code is governed by the BSD license found in the LICENSE file.
import './dfs-invariant-async_FIXTURE.js';
globalThis.test262 += ':direct-1';
4 changes: 4 additions & 0 deletions test/language/module-code/top-level-await/dfs-invariant-direct-2_FIXTURE.js
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// Copyright (C) 2021 the V8 project authors. All rights reserved.
// This code is governed by the BSD license found in the LICENSE file.
import './dfs-invariant-async_FIXTURE.js';
globalThis.test262 += ':direct-2';
4 changes: 4 additions & 0 deletions test/language/module-code/top-level-await/dfs-invariant-indirect_FIXTURE.js
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// Copyright (C) 2021 the V8 project authors. All rights reserved.
// This code is governed by the BSD license found in the LICENSE file.
import './dfs-invariant-direct-1_FIXTURE.js';
globalThis.test262 += ':indirect';
40 changes: 40 additions & 0 deletions test/language/module-code/top-level-await/dfs-invariant.js
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// Copyright (C) 2021 the V8 project authors. All rights reserved.
// This code is governed by the BSD license found in the LICENSE file.
/*---
description: Parent completion orderings match the synchronous module behavior
info: |
6.2.4 AsyncModuleExecutionFulfilled ( module )

[...]
5. Let _execList_ be a new empty List.
6. Perform ! GatherAsyncParentCompletions(_module_, _execList_).
7. Let _sortedExecList_ be a List of elements that are the elements of
_execList_, in the order in which they had their [[AsyncEvaluating]]
fields set to *true* in InnerModuleEvaluation.
8. Assert: All elements of _sortedExecList_ have their [[AsyncEvaluating]]
field set to *true*, [[PendingAsyncDependencies]] field set to 0 and
[[EvaluationError]] field set to *undefined*.
[...]

Dependency graph for this test:

dfs-invariant.js
.-----------------------------------+-------.
| | v
| | dfs-invariant-indirect_FIXTURE.js
| .---|----------------------'
v v v
dfs-invariant-direct-1_FIXTURE.js dfs-invariant-direct-2_FIXTURE.js
'--------. .--------'
v v
dfs-invariant-async_FIXTURE.js
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I love when you make these <3

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                ,------------------. ->  @rwaldron  --.
@jugglinmike -> | dfs-invariant.js |                  +-> Test262
                '------------------' -> @guybedford --'

esid: sec-moduleevaluation
flags: [module]
features: [top-level-await, globalThis]
---*/

import './dfs-invariant-direct-1_FIXTURE.js';
import './dfs-invariant-direct-2_FIXTURE.js';
import './dfs-invariant-indirect_FIXTURE.js';

assert.sameValue(globalThis.test262, 'async:direct-1:direct-2:indirect');