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30 lines
1.3 KiB
JavaScript
30 lines
1.3 KiB
JavaScript
// test setIntersect
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var assert = require('assert');
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var math = require('../../../index');
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describe('setIntersect', function () {
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it('should return the intersection of two sets', function () {
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assert.deepEqual(math.setIntersect([1, 2, 3], [3, 4]), [3]);
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assert.deepEqual(math.setIntersect([1, 2], [3, 4]), []);
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assert.deepEqual(math.setIntersect(["a", "b", "c"], ["c", "d"]), ["c"]);
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assert.deepEqual(math.setIntersect([], [3, 4]), []);
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assert.deepEqual(math.setIntersect([], []), []);
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});
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it('should return the intersection of two multisets', function () {
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assert.deepEqual(math.setIntersect([1, 1, 2, 3, 4, 4], [1, 2, 3, 4, 4, 4]), [1, 2, 3, 4, 4]);
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assert.deepEqual(math.setIntersect([1, 2, 1, 3, 4, 4], [1, 2, 4, 3, 4, 4]), [1, 2, 3, 4, 4]);
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});
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it('should return the same type of output as the inputs', function() {
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assert.equal(math.typeof(math.setIntersect([1, 2, 3], [3, 4, 5])), 'Array');
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assert.equal(math.typeof(math.setIntersect(math.matrix([1, 2, 3]), math.matrix([3, 4, 5]))), 'Matrix');
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});
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it('should throw an error in case of invalid number of arguments', function() {
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assert.throws(function () {math.setIntersect();}, /TypeError: Too few arguments/);
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assert.throws(function () {math.setIntersect([], [], []);}, /TypeError: Too many arguments/);
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});
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});
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