JSTests/test262/test/language/statements/try/dstr/obj-ptrn-prop-id-init-skipped.js

// This file was procedurally generated from the following sources:
// - src/dstr-binding/obj-ptrn-prop-id-init-skipped.case
// - src/dstr-binding/default/try.template
/*---
description: Destructuring initializer is not evaluated when value is not `undefined` (try statement)
esid: sec-runtime-semantics-catchclauseevaluation
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.
    [...]

    13.3.3.7 Runtime Semantics: KeyedBindingInitialization

    BindingElement : BindingPattern Initializeropt

    [...]
    3. If Initializer is present and v is undefined, then
    [...]
---*/
var initCount = 0;
function counter() {
  initCount += 1;
}

var ranCatch = false;

try {
  throw { s: null, u: 0, w: false, y: '' };
} catch ({ s: t = counter(), u: v = counter(), w: x = counter(), y: z = counter() }) {
  assert.sameValue(t, null);
  assert.sameValue(v, 0);
  assert.sameValue(x, false);
  assert.sameValue(z, '');
  assert.sameValue(initCount, 0);

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

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