just/test/array-zip/index.js at diff · hmmhmmhm/just

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var test = require('../util/test')(__filename);

var zip = require('../../packages/array-zip');

test('zips any number of arrays together', function(t) {

t.plan(4);

var actual = zip([1, 2, 3]);

var expected = [[1], [2], [3]];

t.deepEqual(actual, expected);

actual = zip([1, 2], ['a', 'b']);

expected = [[1, 'a'], [2, 'b']];

t.deepEqual(actual, expected);

actual = zip([1, 2], ['a', 'b'], [true, false]);

expected = [[1, 'a', true], [2, 'b', false]];

t.deepEqual(actual, expected);

actual = zip([], []);

expected = [];

t.deepEqual(actual, expected);

t.end();

});

test('fill in blank spaces with undefined when given arrays of various lengths', function(t) {

t.plan(1);

var actual = zip([1, 2, 3], ['a', 'b'], [true]);

var expected = [[1, 'a', true], [2, 'b', undefined], [3, undefined, undefined]];

t.deepEqual(actual, expected);

t.end();

});

test('throws for empty / non-array arguments', function(t) {

t.plan(4);

t.throws(function() {

zip();

});

t.throws(function() {

zip(null);

});

t.throws(function() {

zip([1, 2, 3], {a: '1', b: '2', c: '3'});

});

t.throws(function() {

zip([1, 2], ['a', 'b'], undefined, {}, false, 1, 'foo');

});

t.end();

});

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