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1 // Copyright 2009 the Sputnik authors. All rights reserved. |
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2 // This code is governed by the BSD license found in the LICENSE file. |
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3 |
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4 /** |
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5 * Operator x - y returns ToNumber(x) - ToNumber(y) |
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6 * |
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7 * @path ch11/11.6/11.6.2/S11.6.2_A3_T1.4.js |
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8 * @description Type(x) and Type(y) vary between Null and Undefined |
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9 */ |
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10 |
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11 //CHECK#1 |
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12 if (isNaN(null - undefined) !== true) { |
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13 $ERROR('#1: null - undefined === Not-a-Number. Actual: ' + (null - undefined)); |
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14 } |
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15 |
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16 //CHECK#2 |
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17 if (isNaN(undefined - null) !== true) { |
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18 $ERROR('#2: undefined - null === Not-a-Number. Actual: ' + (undefined - null)); |
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19 } |
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20 |
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21 //CHECK#3 |
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22 if (isNaN(undefined - undefined) !== true) { |
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23 $ERROR('#3: undefined - undefined === Not-a-Number. Actual: ' + (undefined - undefined)); |
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24 } |
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25 |
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26 //CHECK#4 |
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27 if (null - null !== 0) { |
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28 $ERROR('#4: null - null === 0. Actual: ' + (null - null)); |
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29 } |
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30 |