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28 lines
734 B
JavaScript
28 lines
734 B
JavaScript
// test sign
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var assert = require('assert');
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var math = require('../../../math.js');
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// parser
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assert.equal(math.eval('sign(3)'), 1);
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assert.equal(math.eval('sign(-3)'), -1);
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assert.equal(math.eval('sign(0)'), 0);
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// number
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assert.equal(math.sign(3), 1);
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assert.equal(math.sign(-3), -1);
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assert.equal(math.sign(0), 0);
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// complex
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assert.equal(math.sign(math.complex(2,-3)).toString(), '0.5547 - 0.83205i');
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// unit
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assert.throws(function () { math.sign(math.unit('5cm')); });
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// string
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assert.throws(function () { math.sign("hello world"); });
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// matrix, range
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assert.deepEqual(math.sign(math.range(-2,2)), [-1,-1,0,1,1]);
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assert.deepEqual(math.sign(math.matrix(math.range(-2,2))).valueOf(), [-1,-1,0,1,1]);
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// TODO: test array
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