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e49d2661a8
The global isNaN is not precise at all, and Number.isNaN is an ES6 feature that makes it preferrable to use assert's sameValue for NaN values, as it handles it internally using the comparison.
116 lines
3.4 KiB
JavaScript
116 lines
3.4 KiB
JavaScript
// Copyright 2009 the Sputnik authors. All rights reserved.
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// This code is governed by the BSD license found in the LICENSE file.
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/*---
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info: >
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Result of number conversion from object value is the result
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of conversion from primitive value
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es5id: 9.3_A5_T1
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description: >
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new Number(), new Number(0), new Number(Number.NaN), new
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Number(null), new Number(void 0) and others convert to Number by
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explicit transformation
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---*/
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// CHECK#1
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if (Number(new Number()) !== 0) {
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$ERROR('#1: Number(new Number()) === 0. Actual: ' + (Number(new Number())));
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}
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// CHECK#2
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if (Number(new Number(0)) !== 0) {
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$ERROR('#2: Number(new Number(0)) === 0. Actual: ' + (Number(new Number(0))));
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}
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// CHECK#3
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assert.sameValue(Number(new Number(NaN)), NaN, "Number(new Number(NaN)");
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// CHECK#4
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if (Number(new Number(null)) !== 0) {
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$ERROR('#4.1: Number(new Number(null)) === 0. Actual: ' + (Number(new Number(null))));
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} else {
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if (1/Number(new Number(null)) !== Number.POSITIVE_INFINITY) {
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$ERROR('#4.2: Number(new Number(null)) === +0. Actual: -0');
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}
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}
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// CHECK#5
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assert.sameValue(Number(new Number(void 0)), NaN, "Number(new Number(void 0)");
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// CHECK#6
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if (Number(new Number(true)) !== 1) {
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$ERROR('#6: Number(new Number(true)) === 1. Actual: ' + (Number(new Number(true))));
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}
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// CHECK#7
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if (Number(new Number(false)) !== +0) {
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$ERROR('#7.1: Number(new Number(false)) === 0. Actual: ' + (Number(new Number(false))));
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} else {
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if (1/Number(new Number(false)) !== Number.POSITIVE_INFINITY) {
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$ERROR('#7.2: Number(new Number(false)) === +0. Actual: -0');
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}
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}
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// CHECK#8
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if (Number(new Boolean(true)) !== 1) {
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$ERROR('#8: Number(new Boolean(true)) === 1. Actual: ' + (Number(new Boolean(true))));
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}
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// CHECK#9
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if (Number(new Boolean(false)) !== +0) {
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$ERROR('#9.1: Number(new Boolean(false)) === 0. Actual: ' + (Number(new Boolean(false))));
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} else {
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if (1/Number(new Boolean(false)) !== Number.POSITIVE_INFINITY) {
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$ERROR('#9.2: Number(new Boolean(false)) === +0. Actual: -0');
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}
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}
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// CHECK#10
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assert.sameValue(Number(new Array(2,4,8,16,32)), NaN, "Number(new Array(2,4,8,16,32))");
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// CHECK#11
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var myobj1 = {
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ToNumber : function(){return 12345;},
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toString : function(){return "67890";},
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valueOf : function(){return "[object MyObj]";}
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};
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assert.sameValue(Number(myobj1), NaN, "Number(myobj1)");
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// CHECK#12
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var myobj2 = {
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ToNumber : function(){return 12345;},
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toString : function(){return "67890";},
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valueOf : function(){return "9876543210";}
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};
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if (Number(myobj2) !== 9876543210){
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$ERROR("#12: Number(myobj2) calls ToPrimitive with hint Number. Exptected: 9876543210. Actual: " + (Number(myobj2)));
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}
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// CHECK#13
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var myobj3 = {
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ToNumber : function(){return 12345;},
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toString : function(){return "[object MyObj]";}
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};
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assert.sameValue(Number(myobj3), NaN, "Number(myobj3)");
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// CHECK#14
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var myobj4 = {
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ToNumber : function(){return 12345;},
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toString : function(){return "67890";}
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};
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if (Number(myobj4) !== 67890){
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$ERROR("#14: Number(myobj4) calls ToPrimitive with hint Number. Exptected: 67890. Actual: " + (Number(myobj4)));
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}
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// CHECK#15
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var myobj5 = {
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ToNumber : function(){return 12345;}
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};
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assert.sameValue(Number(myobj5), NaN, "Number(myobj5)");
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