41 lines
1.1 KiB
JavaScript
41 lines
1.1 KiB
JavaScript
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'use strict';
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var test = require('tape');
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var setProto = require('../');
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var isPrototypeOf = Object.prototype.isPrototypeOf;
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test('setProto', function (t) {
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t.equal(typeof setProto, 'function', 'is a function');
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t.test('can set', { skip: !setProto }, function (st) {
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var obj = { a: 1 };
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var proto = { b: 2 };
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st.ok(isPrototypeOf.call(Object.prototype, obj), 'Object.prototype is isPrototypeOf obj');
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st.notOk(isPrototypeOf.call(proto, obj), 'proto is not isPrototypeOf obj');
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st.ok('a' in obj, 'a is in obj');
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st.notOk('b' in obj, 'b is not in obj');
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// eslint-disable-next-line no-extra-parens
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st.equal(/** @type {NonNullable<typeof setProto>} */ (setProto)(obj, proto), obj, 'returns the object');
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st.ok(isPrototypeOf.call(Object.prototype, obj), 'Object.prototype is isPrototypeOf obj');
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st.ok(isPrototypeOf.call(proto, obj), 'proto is isPrototypeOf obj');
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st.ok('a' in obj, 'a is in obj');
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st.ok('b' in obj, 'b is in obj');
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st.equal(Object.getPrototypeOf(obj), proto, 'sets the prototype');
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st.end();
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});
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t.test('can not set', { skip: !!setProto }, function (st) {
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st.equal(setProto, null);
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st.end();
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});
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t.end();
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});
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