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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.
55 lines
1.6 KiB
JavaScript
55 lines
1.6 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 number value equals to the input
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argument (no conversion)
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es5id: 9.3_A4.2_T1
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description: >
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Number.NaN, +0, -0, Number.POSITIVE_INFINITY,
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Number.NEGATIVE_INFINITY, Number.MAX_VALUE and Number.MIN_VALUE
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convert to Number by explicit transformation
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---*/
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// CHECK#1
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assert.sameValue(Number(NaN), NaN, "NaN");
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// CHECK#2
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if (Number(+0) !== +0) {
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$ERROR('#2.1: Number(+0) === 0. Actual: ' + (Number(+0)));
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} else {
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if (1/Number(+0) !== Number.POSITIVE_INFINITY) {
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$ERROR('#2.2: Number(+0) === +0. Actual: -0');
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}
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}
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// CHECK#3
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if (Number(-0) !== -0) {
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$ERROR('#3.1: Number(-0) === 0. Actual: ' + (Number(-0)));
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} else {
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if (1/Number(-0) !== Number.NEGATIVE_INFINITY) {
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$ERROR('#3.2: Number(-0) === -0. Actual: +0');
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}
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}
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// CHECK#4
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if (Number(Number.POSITIVE_INFINITY) !== Number.POSITIVE_INFINITY) {
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$ERROR('#4: Number(+Infinity) === +Infinity. Actual: ' + (Number(+Infinity)));
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}
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// CHECK#5
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if (Number(Number.NEGATIVE_INFINITY) !== Number.NEGATIVE_INFINITY) {
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$ERROR('#5: Number(-Infinity) === -Infinity. Actual: ' + (Number(-Infinity)));
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}
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// CHECK#6
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if (Number(Number.MAX_VALUE) !== Number.MAX_VALUE) {
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$ERROR('#6: Number(Number.MAX_VALUE) === Number.MAX_VALUE. Actual: ' + (Number(Number.MAX_VALUE)));
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}
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// CHECK#7
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if (Number(Number.MIN_VALUE) !== Number.MIN_VALUE) {
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$ERROR('#7: Number(Number.MIN_VALUE) === Number.MIN_VALUE. Actual: ' + (Number(Number.MIN_VALUE)));
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}
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