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59 lines
1.8 KiB
JavaScript
59 lines
1.8 KiB
JavaScript
// test edivide (element-wise divide)
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var assert = require('assert');
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math = require('../../../math.js'),
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approx = require('../../../tools/approx.js'),
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edivide = math.edivide,
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complex = math.complex;
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// parser
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/* TODO: edivide for parser
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assert.equal(math.eval('4 ./ 2'), 2);
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assert.equal(math.eval('8 ./ 2 / 2'), 2);
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*/
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assert.equal(math.eval('edivide(4, 2)'), 2);
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// number
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assert.equal(edivide(4, 2), 2);
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assert.equal(edivide(-4, 2), -2);
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assert.equal(edivide(4, -2), -2);
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assert.equal(edivide(-4, -2), 2);
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assert.equal(edivide(4, 0), Infinity);
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assert.equal(edivide(0, -5), 0);
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assert.ok(isNaN(edivide(0, 0)));
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// wrong arguments
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assert.throws(function () {edivide(2,3,4); });
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assert.throws(function () {edivide(2); });
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// complex
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approx.deepEqual(edivide(complex('2+3i'), 2), complex('1+1.5i'));
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approx.deepEqual(edivide(complex('2+3i'), complex('4i')), complex('0.75 - 0.5i'));
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approx.deepEqual(edivide(complex('2i'), complex('4i')), 0.5);
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approx.deepEqual(edivide(4, complex('1+2i')), complex('0.8 - 1.6i'));
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// unit
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assert.equal(edivide(math.unit('5 m'), 10).toString(), '500 mm');
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assert.throws(function () {edivide(10, math.unit('5 m')).toString()});
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// matrix, array, range
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assert.deepEqual(edivide(math.range(2,2,6), 2), [1,2,3]);
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a = math.matrix([[1,2],[3,4]]);
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assert.deepEqual(edivide(a, 2), math.matrix([[0.5,1],[1.5,2]]));
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assert.deepEqual(edivide(a.valueOf(), 2), [[0.5,1],[1.5,2]]);
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assert.deepEqual(edivide([], 2), []);
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assert.deepEqual(edivide([], 2), []);
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approx.deepEqual(math.format(edivide(1, [
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[ 1, 4, 7],
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[ 3, 0, 5],
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[-1, 9, 11]
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])), math.format([
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[ 1, 0.25, 1/7],
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[ 1/3, Infinity, 0.2],
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[-1, 1/9, 1/11]
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]));
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a = math.matrix([[1,2],[3,4]]);
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b = math.matrix([[5,6],[7,8]]);
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assert.deepEqual(edivide(a, b), math.matrix([[1/5, 2/6], [3/7,4/8]]));
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assert.throws(function () {edivide(a, [[1]])});
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