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27 lines
795 B
27 lines
795 B
4 years ago
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'use strict'
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var supports = require('..')
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// Every object in a manifest must have a unique identity, to avoid accidental
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// mutation. In supports() we only shallowly clone the manifest object itself
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// and additionalMethods. If in the future we add more objects to manifests,
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// this test will break and we'll know to start performing a deep clone.
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module.exports = function cloneable (t, manifest) {
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var copy = supports(manifest)
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verifyUnique(t, 'manifest', manifest, copy)
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}
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function verifyUnique (t, path, a, b) {
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if (isObject(a) && isObject(b)) {
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t.ok(a !== b, path + ' has unique identity')
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Object.keys(a).forEach(function (key) {
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verifyUnique(t, path + '.' + key, a[key], b[key])
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})
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}
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}
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function isObject (o) {
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return typeof o === 'object' && o !== null
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}
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