| "use strict"; |
| |
| var forEach = require("@sinonjs/commons").prototypes.set.forEach; |
| |
| /** |
| * Returns `true` when `s1` is a subset of `s2`, `false` otherwise |
| * |
| * @private |
| * @param {Array|Set} s1 The target value |
| * @param {Array|Set} s2 The containing value |
| * @param {Function} compare A comparison function, should return `true` when |
| * values are considered equal |
| * @returns {boolean} Returns `true` when `s1` is a subset of `s2`, `false`` otherwise |
| */ |
| function isSubset(s1, s2, compare) { |
| var allContained = true; |
| forEach(s1, function(v1) { |
| var includes = false; |
| forEach(s2, function(v2) { |
| if (compare(v2, v1)) { |
| includes = true; |
| } |
| }); |
| allContained = allContained && includes; |
| }); |
| |
| return allContained; |
| } |
| |
| module.exports = isSubset; |