mirror of https://github.com/tc39/test262.git
66 lines
2.1 KiB
JavaScript
66 lines
2.1 KiB
JavaScript
// Copyright (C) 2016 the V8 project authors. All rights reserved.
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// This code is governed by the BSD license found in the LICENSE file.
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/*---
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es6id: 13.12.11
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description: >
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Completion value when execution continues through multiple cases and ends
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with an empty abrupt completion
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info: |
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SwitchStatement : switch ( Expression ) CaseBlock
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[...]
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8. Let R be the result of performing CaseBlockEvaluation of CaseBlock with
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argument switchValue.
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9. Set the running execution context’s LexicalEnvironment to oldEnv.
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10. Return R.
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13.12.9 Runtime Semantics: CaseBlockEvaluation
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CaseBlock : { CaseClausesopt DefaultClause CaseClausesopt }
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1. Let V = undefined.
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2. Let A be the list of CaseClause items in the first CaseClauses, in
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source text order. If the first CaseClauses is not present A is « ».
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3. Let found be false.
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4. Repeat for each CaseClause C in A
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a. If found is false, then
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[...]
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b. If found is true, then
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i. Let R be the result of evaluating C.
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ii. If R.[[value]] is not empty, let V = R.[[value]].
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iii. If R is an abrupt completion, return Completion(UpdateEmpty(R,
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V)).
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---*/
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assert.sameValue(
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eval('1; switch ("a") { case "a": 2; case "b": 3; break; default: }'),
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3,
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'Non-empty value replaces previous non-empty value'
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);
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assert.sameValue(
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eval('4; switch ("a") { case "a": case "b": 5; break; default: }'),
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5,
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'Non-empty value replaces empty value'
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);
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assert.sameValue(
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eval('6; switch ("a") { case "a": 7; case "b": break; default: }'),
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7,
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'Empty value does not replace previous non-empty value'
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);
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assert.sameValue(
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eval('8; do { switch ("a") { case "a": 9; case "b": 10; continue; default: } } while (false)'),
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10,
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'Non-empty value replaces previous non-empty value'
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);
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assert.sameValue(
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eval('11; do { switch ("a") { case "a": case "b": 12; continue; default: } } while (false)'),
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12,
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'Non-empty value replaces empty value'
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);
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assert.sameValue(
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eval('13; do { switch ("a") { case "a": 14; case "b": continue; default: } } while (false)'),
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14,
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'Empty value does not replace previous non-empty value'
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);
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