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node_modules/es-iterator-helpers/test/Iterator.zipKeyed.js

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+'use strict';
+
+var defineProperties = require('define-properties');
+var test = require('tape');
+var callBind = require('call-bind');
+var functionsHaveNames = require('functions-have-names')();
+var forEach = require('for-each');
+var debug = require('object-inspect');
+var v = require('es-value-fixtures');
+var hasSymbols = require('has-symbols/shams')();
+var mockProperty = require('mock-property');
+
+var index = require('../Iterator.zipKeyed');
+var impl = require('../Iterator.zipKeyed/implementation');
+var from = require('../Iterator.from/polyfill')();
+
+var testIterator = require('./helpers/testIterator');
+
+var isEnumerable = Object.prototype.propertyIsEnumerable;
+
+module.exports = {
+	tests: function (zipKeyed, name, t) {
+		t['throws'](
+			function () { return new zipKeyed(); }, // eslint-disable-line new-cap
+			TypeError,
+			'`' + name + '` itself is not a constructor'
+		);
+		t['throws'](
+			function () { return new zipKeyed({}); }, // eslint-disable-line new-cap
+			TypeError,
+			'`' + name + '` itself is not a constructor, with an argument'
+		);
+
+		forEach(v.primitives, function (primitive) {
+			t['throws'](
+				function () { zipKeyed(primitive); },
+				TypeError,
+				debug(primitive) + ' is not an Object'
+			);
+			if (primitive != null) {
+				t['throws'](
+					function () { zipKeyed({ a: primitive }); },
+					TypeError,
+					'key "a" on iterables object is ' + debug(primitive) + ' which is not an iterable Object'
+				);
+			}
+		});
+
+		forEach(v.objects, function (nonIterator) {
+			t.doesNotThrow(function () { zipKeyed({ a: nonIterator }); }, 'does not throw until `.next()`');
+
+			t['throws'](
+				function () { zipKeyed({ a: nonIterator }).next(); },
+				TypeError,
+				'key "a" on iterables object is ' + debug(nonIterator) + ' which is not an iterable Object'
+			);
+		});
+
+		t.test('actual iteration', { skip: !hasSymbols }, function (st) {
+			forEach(v.nonFunctions, function (nonFunction) {
+				if (nonFunction != null) {
+					var badIterable = {};
+					badIterable[Symbol.iterator] = nonFunction;
+					st['throws'](
+						function () { zipKeyed({ a: [], b: badIterable, c: [] }).next(); },
+						TypeError,
+						'key "b" on iterables object is ' + debug(badIterable) + ' is not a function'
+					);
+				}
+			});
+
+			forEach(v.strings, function (string) {
+				st['throws'](
+					function () { zipKeyed({ a: string }); },
+					TypeError,
+					'key "a" on iterables object is an iterable primitive, but non-objects are not considered iterable'
+				);
+			});
+
+			st.test('real iterators', { skip: !hasSymbols }, function (s2t) {
+				var iter = [['a', 1], ['b', 2]][Symbol.iterator]();
+				var iterator = zipKeyed({ a: iter, b: ['a', 3], c: ['b', 4] });
+
+				testIterator(
+					iterator,
+					[
+						{ __proto__: null, a: ['a', 1], b: 'a', c: 'b' },
+						{ __proto__: null, a: ['b', 2], b: 3, c: 4 }
+					],
+					s2t,
+					'array iterator + array yields combined results'
+				);
+
+				s2t.end();
+			});
+
+			st.test('observability in a replaced String iterator', function (s2t) {
+				var originalStringIterator = String.prototype[Symbol.iterator];
+				var observedType;
+				s2t.teardown(mockProperty(String.prototype, Symbol.iterator, {
+					get: function () {
+						'use strict'; // eslint-disable-line strict, lines-around-directive
+
+						observedType = typeof this;
+						return originalStringIterator;
+					}
+				}));
+
+				zipKeyed([from('')]);
+				s2t.equal(observedType, 'string', 'string primitive -> primitive receiver in Symbol.iterator getter');
+				zipKeyed([from(Object(''))]);
+				s2t.equal(observedType, 'object', 'boxed string -> boxed string in Symbol.iterator getter');
+
+				s2t.end();
+			});
+
+			st.end();
+		});
+	},
+	index: function () {
+		test('Iterator.zipKeyed: index', function (t) {
+			module.exports.tests(index, 'Iterator.zipKeyed', t);
+
+			t.end();
+		});
+	},
+	implementation: function () {
+		test('Iterator.zipKeyed: implementation', function (t) {
+			module.exports.tests(impl, 'Iterator.zipKeyed', t);
+
+			t.end();
+		});
+	},
+	shimmed: function () {
+		test('Iterator.zipKeyed: shimmed', function (t) {
+			t.test('Function name', { skip: !functionsHaveNames }, function (st) {
+				st.equal(Iterator.zipKeyed.name, 'zipKeyed', 'Iterator.zipKeyed has name "zipKeyed"');
+				st.end();
+			});
+
+			t.test('enumerability', { skip: !defineProperties.supportsDescriptors }, function (et) {
+				et.equal(false, isEnumerable.call(Iterator, 'zipKeyed'), 'Iterator.zipKeyed is not enumerable');
+				et.end();
+			});
+
+			module.exports.tests(callBind(Iterator.zipKeyed, Iterator), 'Iterator.zipKeyed', t);
+
+			t.end();
+		});
+	}
+};