diff options
Diffstat (limited to 'test/language/expressions/optional-chaining/runtime-semantics-evaluation.js')
-rw-r--r-- | test/language/expressions/optional-chaining/runtime-semantics-evaluation.js | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/test/language/expressions/optional-chaining/runtime-semantics-evaluation.js b/test/language/expressions/optional-chaining/runtime-semantics-evaluation.js new file mode 100644 index 000000000..9062e2c5a --- /dev/null +++ b/test/language/expressions/optional-chaining/runtime-semantics-evaluation.js @@ -0,0 +1,18 @@ +// Copyright 2019 Google, Inc. All rights reserved. +// This code is governed by the BSD license found in the LICENSE file. +/*--- +esid: prod-OptionalExpression +description: > + accessing optional value on undefined or null returns undefined. +info: | + If baseValue is undefined or null, then + Return undefined. +features: [optional-chaining] +---*/ + +const nul = null; +const undf = undefined; +assert.sameValue(undefined, nul?.a); +assert.sameValue(undefined, undf?.b); +assert.sameValue(undefined, null?.a); +assert.sameValue(undefined, undefined?.b); |