| // Copyright (C) 2017 Robin Templeton. All rights reserved. |
| // This code is governed by the BSD license found in the LICENSE file. |
| |
| /*--- |
| description: Conversion of BigInt values to booleans |
| esid: sec-logical-not-operator-runtime-semantics-evaluation |
| info: | |
| UnaryExpression: ! UnaryExpression |
| |
| 1. Let expr be the result of evaluating UnaryExpression. |
| 2. Let oldValue be ToBoolean(? GetValue(expr)). |
| 3. If oldValue is true, return false. |
| 4. Return true. |
| |
| ToBoolean ( argument ) |
| |
| BigInt: Return false if argument is 0n; otherwise return true. |
| features: [BigInt] |
| ---*/ |
| |
| assert.sameValue(!0n, true, "!0n"); |
| assert.sameValue(!1n, false, "!1n"); |
| assert.sameValue(!-1n, false, "!-1n"); |
