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- var assert = require('assert');
- var intersperse = require('..');
- describe('intersperse', function () {
- it("should return a new array for empty array", function () {
- var arr = [];
- var newArr = intersperse(arr);
- assert.deepEqual(newArr, []);
- assert.deepEqual(arr, []);
- assert.ok(newArr !== arr);
- });
- it("should return a new array for single-item array", function () {
- var arr = [1];
- var newArr = intersperse(arr);
- assert.deepEqual(newArr, [1]);
- assert.deepEqual(arr, [1]);
- assert.ok(newArr !== arr);
- });
- it("should return a new interspersed array", function () {
- var arr = [1, 2, 3];
- var newArr = intersperse(arr, 'a');
- assert.deepEqual(newArr, [1, 'a', 2, 'a', 3]);
- assert.deepEqual(arr, [1, 2, 3]);
- });
- });
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