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Diffstat (limited to 'deps/npm/node_modules/es-to-primitive/test/es2015.js')
| -rw-r--r-- | deps/npm/node_modules/es-to-primitive/test/es2015.js | 151 |
1 files changed, 151 insertions, 0 deletions
diff --git a/deps/npm/node_modules/es-to-primitive/test/es2015.js b/deps/npm/node_modules/es-to-primitive/test/es2015.js new file mode 100644 index 0000000000..80f4083dd9 --- /dev/null +++ b/deps/npm/node_modules/es-to-primitive/test/es2015.js @@ -0,0 +1,151 @@ +'use strict'; + +var test = require('tape'); +var toPrimitive = require('../es2015'); +var is = require('object-is'); +var forEach = require('foreach'); +var functionName = require('function.prototype.name'); +var debug = require('object-inspect'); + +var hasSymbols = typeof Symbol === 'function' && typeof Symbol.iterator === 'symbol'; +var hasSymbolToPrimitive = hasSymbols && typeof Symbol.toPrimitive === 'symbol'; + +test('function properties', function (t) { + t.equal(toPrimitive.length, 1, 'length is 1'); + t.equal(functionName(toPrimitive), 'ToPrimitive', 'name is ToPrimitive'); + + t.end(); +}); + +var primitives = [null, undefined, true, false, 0, -0, 42, NaN, Infinity, -Infinity, '', 'abc']; + +test('primitives', function (t) { + forEach(primitives, function (i) { + t.ok(is(toPrimitive(i), i), 'toPrimitive(' + debug(i) + ') returns the same value'); + t.ok(is(toPrimitive(i, String), i), 'toPrimitive(' + debug(i) + ', String) returns the same value'); + t.ok(is(toPrimitive(i, Number), i), 'toPrimitive(' + debug(i) + ', Number) returns the same value'); + }); + t.end(); +}); + +test('Symbols', { skip: !hasSymbols }, function (t) { + var symbols = [ + Symbol('foo'), + Symbol.iterator, + Symbol['for']('foo') // eslint-disable-line no-restricted-properties + ]; + forEach(symbols, function (sym) { + t.equal(toPrimitive(sym), sym, 'toPrimitive(' + debug(sym) + ') returns the same value'); + t.equal(toPrimitive(sym, String), sym, 'toPrimitive(' + debug(sym) + ', String) returns the same value'); + t.equal(toPrimitive(sym, Number), sym, 'toPrimitive(' + debug(sym) + ', Number) returns the same value'); + }); + + var primitiveSym = Symbol('primitiveSym'); + var objectSym = Object(primitiveSym); + t.equal(toPrimitive(objectSym), primitiveSym, 'toPrimitive(' + debug(objectSym) + ') returns ' + debug(primitiveSym)); + t.equal(toPrimitive(objectSym, String), primitiveSym, 'toPrimitive(' + debug(objectSym) + ', String) returns ' + debug(primitiveSym)); + t.equal(toPrimitive(objectSym, Number), primitiveSym, 'toPrimitive(' + debug(objectSym) + ', Number) returns ' + debug(primitiveSym)); + t.end(); +}); + +test('Arrays', function (t) { + var arrays = [[], ['a', 'b'], [1, 2]]; + forEach(arrays, function (arr) { + t.equal(toPrimitive(arr), String(arr), 'toPrimitive(' + debug(arr) + ') returns the string version of the array'); + t.equal(toPrimitive(arr, String), String(arr), 'toPrimitive(' + debug(arr) + ') returns the string version of the array'); + t.equal(toPrimitive(arr, Number), String(arr), 'toPrimitive(' + debug(arr) + ') returns the string version of the array'); + }); + t.end(); +}); + +test('Dates', function (t) { + var dates = [new Date(), new Date(0), new Date(NaN)]; + forEach(dates, function (date) { + t.equal(toPrimitive(date), String(date), 'toPrimitive(' + debug(date) + ') returns the string version of the date'); + t.equal(toPrimitive(date, String), String(date), 'toPrimitive(' + debug(date) + ') returns the string version of the date'); + t.ok(is(toPrimitive(date, Number), Number(date)), 'toPrimitive(' + debug(date) + ') returns the number version of the date'); + }); + t.end(); +}); + +var coercibleObject = { valueOf: function () { return 3; }, toString: function () { return 42; } }; +var valueOfOnlyObject = { valueOf: function () { return 4; }, toString: function () { return {}; } }; +var toStringOnlyObject = { valueOf: function () { return {}; }, toString: function () { return 7; } }; +var coercibleFnObject = { + valueOf: function () { return function valueOfFn() {}; }, + toString: function () { return 42; } +}; +var uncoercibleObject = { valueOf: function () { return {}; }, toString: function () { return {}; } }; +var uncoercibleFnObject = { + valueOf: function () { return function valueOfFn() {}; }, + toString: function () { return function toStrFn() {}; } +}; + +test('Objects', function (t) { + t.equal(toPrimitive(coercibleObject), coercibleObject.valueOf(), 'coercibleObject with no hint coerces to valueOf'); + t.equal(toPrimitive(coercibleObject, Number), coercibleObject.valueOf(), 'coercibleObject with hint Number coerces to valueOf'); + t.equal(toPrimitive(coercibleObject, String), coercibleObject.toString(), 'coercibleObject with hint String coerces to non-stringified toString'); + + t.equal(toPrimitive(coercibleFnObject), coercibleFnObject.toString(), 'coercibleFnObject coerces to non-stringified toString'); + t.equal(toPrimitive(coercibleFnObject, Number), coercibleFnObject.toString(), 'coercibleFnObject with hint Number coerces to non-stringified toString'); + t.equal(toPrimitive(coercibleFnObject, String), coercibleFnObject.toString(), 'coercibleFnObject with hint String coerces to non-stringified toString'); + + t.equal(toPrimitive({}), '[object Object]', '{} with no hint coerces to Object#toString'); + t.equal(toPrimitive({}, Number), '[object Object]', '{} with hint Number coerces to Object#toString'); + t.equal(toPrimitive({}, String), '[object Object]', '{} with hint String coerces to Object#toString'); + + t.equal(toPrimitive(toStringOnlyObject), toStringOnlyObject.toString(), 'toStringOnlyObject returns non-stringified toString'); + t.equal(toPrimitive(toStringOnlyObject, Number), toStringOnlyObject.toString(), 'toStringOnlyObject with hint Number returns non-stringified toString'); + t.equal(toPrimitive(toStringOnlyObject, String), toStringOnlyObject.toString(), 'toStringOnlyObject with hint String returns non-stringified toString'); + + t.equal(toPrimitive(valueOfOnlyObject), valueOfOnlyObject.valueOf(), 'valueOfOnlyObject returns valueOf'); + t.equal(toPrimitive(valueOfOnlyObject, Number), valueOfOnlyObject.valueOf(), 'valueOfOnlyObject with hint Number returns valueOf'); + t.equal(toPrimitive(valueOfOnlyObject, String), valueOfOnlyObject.valueOf(), 'valueOfOnlyObject with hint String returns non-stringified valueOf'); + + t.test('Symbol.toPrimitive', { skip: !hasSymbolToPrimitive }, function (st) { + var overriddenObject = { toString: st.fail, valueOf: st.fail }; + overriddenObject[Symbol.toPrimitive] = function (hint) { return String(hint); }; + + st.equal(toPrimitive(overriddenObject), 'default', 'object with Symbol.toPrimitive + no hint invokes that'); + st.equal(toPrimitive(overriddenObject, Number), 'number', 'object with Symbol.toPrimitive + hint Number invokes that'); + st.equal(toPrimitive(overriddenObject, String), 'string', 'object with Symbol.toPrimitive + hint String invokes that'); + + var nullToPrimitive = { toString: coercibleObject.toString, valueOf: coercibleObject.valueOf }; + nullToPrimitive[Symbol.toPrimitive] = null; + st.equal(toPrimitive(nullToPrimitive), toPrimitive(coercibleObject), 'object with no hint + null Symbol.toPrimitive ignores it'); + st.equal(toPrimitive(nullToPrimitive, Number), toPrimitive(coercibleObject, Number), 'object with hint Number + null Symbol.toPrimitive ignores it'); + st.equal(toPrimitive(nullToPrimitive, String), toPrimitive(coercibleObject, String), 'object with hint String + null Symbol.toPrimitive ignores it'); + + st.test('exceptions', function (sst) { + var nonFunctionToPrimitive = { toString: sst.fail, valueOf: sst.fail }; + nonFunctionToPrimitive[Symbol.toPrimitive] = {}; + sst['throws'](toPrimitive.bind(null, nonFunctionToPrimitive), TypeError, 'Symbol.toPrimitive returning a non-function throws'); + + var uncoercibleToPrimitive = { toString: sst.fail, valueOf: sst.fail }; + uncoercibleToPrimitive[Symbol.toPrimitive] = function (hint) { + return { toString: function () { return hint; } }; + }; + sst['throws'](toPrimitive.bind(null, uncoercibleToPrimitive), TypeError, 'Symbol.toPrimitive returning an object throws'); + + var throwingToPrimitive = { toString: sst.fail, valueOf: sst.fail }; + throwingToPrimitive[Symbol.toPrimitive] = function (hint) { throw new RangeError(hint); }; + sst['throws'](toPrimitive.bind(null, throwingToPrimitive), RangeError, 'Symbol.toPrimitive throwing throws'); + + sst.end(); + }); + + st.end(); + }); + + t.test('exceptions', function (st) { + st['throws'](toPrimitive.bind(null, uncoercibleObject), TypeError, 'uncoercibleObject throws a TypeError'); + st['throws'](toPrimitive.bind(null, uncoercibleObject, Number), TypeError, 'uncoercibleObject with hint Number throws a TypeError'); + st['throws'](toPrimitive.bind(null, uncoercibleObject, String), TypeError, 'uncoercibleObject with hint String throws a TypeError'); + + st['throws'](toPrimitive.bind(null, uncoercibleFnObject), TypeError, 'uncoercibleFnObject throws a TypeError'); + st['throws'](toPrimitive.bind(null, uncoercibleFnObject, Number), TypeError, 'uncoercibleFnObject with hint Number throws a TypeError'); + st['throws'](toPrimitive.bind(null, uncoercibleFnObject, String), TypeError, 'uncoercibleFnObject with hint String throws a TypeError'); + st.end(); + }); + t.end(); +}); |