test/language/statements/try/dstr-ary-ptrn-elem-obj-prop-id-init.js


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// This file was procedurally generated from the following sources:
// - src/dstr-binding/ary-ptrn-elem-obj-prop-id-init.case
// - src/dstr-binding/default/try.template
/*---
description: BindingElement with object binding pattern and initializer is used (try statement)
esid: sec-runtime-semantics-catchclauseevaluation
es6id: 13.15.7
features: [destructuring-binding]
flags: [generated]
info: |
    Catch : catch ( CatchParameter ) Block

    [...]
    5. Let status be the result of performing BindingInitialization for
       CatchParameter passing thrownValue and catchEnv as arguments.
    [...]

    13.3.3.6 Runtime Semantics: IteratorBindingInitialization

    BindingElement : BindingPatternInitializer opt

    [...]
    2. If iteratorRecord.[[done]] is true, let v be undefined.
    3. If Initializer is present and v is undefined, then
       a. Let defaultValue be the result of evaluating Initializer.
       b. Let v be ? GetValue(defaultValue).
    4. Return the result of performing BindingInitialization of BindingPattern
       with v and environment as the arguments.
---*/

var ranCatch = false;

try {
  throw [];
} catch ([{ u: v, w: x, y: z } = { u: 444, w: 555, y: 666 }]) {
  assert.sameValue(v, 444);
  assert.sameValue(x, 555);
  assert.sameValue(z, 666);

  assert.throws(ReferenceError, function() {
    u;
  });
  assert.throws(ReferenceError, function() {
    w;
  });
  assert.throws(ReferenceError, function() {
    y;
  });
  ranCatch = true;
}

assert(ranCatch, 'executed `catch` block');