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add pskl.utils.Array.chunk

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juliandescottes
2016-12-18 09:16:52 +01:00
parent 156161f7c8
commit dba62d2b0d
2 changed files with 86 additions and 0 deletions
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68
test/js/utils/ArrayTest.js Normal file
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describe("Array utils", function() {
beforeEach(function() {});
afterEach(function() {});
it("chunks correctly", function() {
// when
var array = [1, 2, 3, 4];
// then
var chunks = pskl.utils.Array.chunk(array, 1);
// verify
expect(chunks.length).toBe(1);
expect(chunks[0]).toEqual([1, 2, 3, 4]);
// then
chunks = pskl.utils.Array.chunk(array, 2);
// verify
expect(chunks.length).toBe(2);
expect(chunks[0]).toEqual([1, 2]);
expect(chunks[1]).toEqual([3, 4]);
// then
chunks = pskl.utils.Array.chunk(array, 3);
// verify
expect(chunks.length).toBe(3);
expect(chunks[0]).toEqual([1]);
expect(chunks[1]).toEqual([2]);
expect(chunks[2]).toEqual([3, 4]);
// then
chunks = pskl.utils.Array.chunk(array, 4);
// verify
expect(chunks.length).toBe(4);
expect(chunks[0]).toEqual([1]);
expect(chunks[1]).toEqual([2]);
expect(chunks[2]).toEqual([3]);
expect(chunks[3]).toEqual([4]);
// then
chunks = pskl.utils.Array.chunk(array, 5);
// verify
expect(chunks.length).toBe(4);
expect(chunks[0]).toEqual([1]);
expect(chunks[1]).toEqual([2]);
expect(chunks[2]).toEqual([3]);
expect(chunks[3]).toEqual([4]);
// then
chunks = pskl.utils.Array.chunk(array, 0);
// verify
expect(chunks.length).toBe(1);
expect(chunks[0]).toEqual([1, 2, 3, 4]);
// then
chunks = pskl.utils.Array.chunk(array, -1);
// verify
expect(chunks.length).toBe(1);
expect(chunks[0]).toEqual([1, 2, 3, 4]);
});
});