jai shree ram

node_modules/es-shim-unscopables/test/index.js

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+'use strict';
+
+var test = require('tape');
+var inspect = require('object-inspect');
+var v = require('es-value-fixtures');
+var forEach = require('for-each');
+var has = require('has');
+
+var shimUnscopables = require('../');
+
+var sortSymbols = function (a, b) {
+	return inspect(a).localeCompare(inspect(b));
+};
+
+test('shimUnscopables', function (t) {
+	t.equal(typeof shimUnscopables, 'function', 'is a function');
+
+	forEach(v.nonStrings, function (notNonEmptyString) {
+		t['throws'](
+			function () { shimUnscopables(notNonEmptyString); },
+			TypeError,
+			inspect(notNonEmptyString) + ' is not a non-empty String'
+		);
+	});
+
+	t['throws'](
+		function () { shimUnscopables('x'); },
+		TypeError,
+		inspect('x') + ' is not on Array.prototype'
+	);
+
+	t.test('no symbols', { skip: typeof Symbol === 'function' }, function (st) {
+		st.doesNotThrow(function () { shimUnscopables('forEach'); });
+
+		st.end();
+	});
+
+	t.test('symbols, no unscopables', { skip: typeof Symbol !== 'function' || Symbol.unscopables }, function (st) {
+		st.deepEqual(Object.getOwnPropertySymbols(Array.prototype), [Symbol.iterator]);
+
+		shimUnscopables('forEach');
+
+		st.deepEqual(Object.getOwnPropertySymbols(Array.prototype), [Symbol.iterator]);
+
+		st.end();
+	});
+
+	t.test('Symbol.unscopables', { skip: typeof Symbol !== 'function' || !Symbol.unscopables }, function (st) {
+		st.deepEqual(
+			Object.getOwnPropertySymbols(Array.prototype).sort(sortSymbols),
+			[Symbol.iterator, Symbol.unscopables]
+		);
+		st.notOk(has(Array.prototype[Symbol.unscopables], 'forEach'), 'unscopables map lacks forEach');
+
+		shimUnscopables('forEach');
+
+		st.deepEqual(
+			Object.getOwnPropertySymbols(Array.prototype).sort(sortSymbols),
+			[Symbol.iterator, Symbol.unscopables]
+		);
+		st.equal(Array.prototype[Symbol.unscopables].forEach, true, 'unscopables map has forEach');
+
+		st.end();
+	});
+
+	t.end();
+});