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