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Copy pathindex.js
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59 lines (54 loc) · 1.48 KB
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var test = require('../util/test')(__filename);
var range = require('../../packages/array-range');
test('array range with one integer argument', function(t) {
t.plan(2);
var stop = 5;
var negativeStop = -5;
t.deepEqual(range(stop), [0, 1, 2, 3, 4]);
t.deepEqual(range(negativeStop), [0, -1, -2, -3, -4]);
t.end();
});
test('array range with two integer arguments', function(t) {
t.plan(2);
var start = 0;
var stop = 5;
var negativeStop = -5;
t.deepEqual(range(start, stop), [0, 1, 2, 3, 4]);
t.deepEqual(range(start, negativeStop), [0, -1, -2, -3, -4]);
t.end();
});
test('array range with three integer arguments', function(t) {
t.plan(2);
var start = 0;
var stop = 20;
var negativeStop = -20;
var step = 5;
var negativeStep = -5;
t.deepEqual(range(start, stop, step), [0, 5, 10, 15]);
t.deepEqual(range(start, negativeStop, negativeStep), [0, -5, -10, -15]);
t.end();
});
test('array range with three decimal arguments', function(t) {
t.plan(2);
var start = 0;
var stop = 1.9;
var negativeStop = -1.9;
var step = 0.5;
var negativeStep = -0.5;
t.deepEqual(range(start, stop, step), [0, 0.5, 1, 1.5]);
t.deepEqual(range(start, negativeStop, negativeStep), [0, -0.5, -1, -1.5]);
t.end();
});
test('throws if any argument is not null/undefined or number', function(t) {
t.plan(3);
t.throws(function() {
range('0', 3);
});
t.throws(function() {
range(0, '3');
});
t.throws(function() {
range(0, 3, '1');
});
t.end();
});