Commit | Line | Data |
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1e953fd9 | 1 | import { expect } from 'expect'; |
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3 | import { CircularArray } from '../../src/utils/CircularArray'; |
4 | ||
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5 | describe('Circular array test suite', () => { |
6 | it('Verify that circular array can be instantiated', () => { | |
7 | const circularArray = new CircularArray(); | |
8 | expect(circularArray).toBeInstanceOf(CircularArray); | |
9 | }); | |
10 | ||
11 | it('Verify circular array default size at instance creation', () => { | |
12 | const circularArray = new CircularArray(); | |
9a15316c | 13 | expect(circularArray.size).toBe(1024); |
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14 | }); |
15 | ||
16 | it('Verify that circular array size can be set at instance creation', () => { | |
17 | const circularArray = new CircularArray(1000); | |
18 | expect(circularArray.size).toBe(1000); | |
19 | }); | |
20 | ||
21 | it('Verify that circular array size and items can be set at instance creation', () => { | |
22 | let circularArray = new CircularArray(1000, 1, 2, 3, 4, 5); | |
23 | expect(circularArray.size).toBe(1000); | |
24 | expect(circularArray.length).toBe(5); | |
25 | circularArray = new CircularArray(4, 1, 2, 3, 4, 5); | |
26 | expect(circularArray.size).toBe(4); | |
27 | expect(circularArray.length).toBe(4); | |
28 | }); | |
29 | ||
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30 | it("Verify that circular array size can't be negative at instance creation", () => { |
31 | expect(() => new CircularArray(-1)).toThrowError(new RangeError('Invalid circular array size')); | |
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32 | }); |
33 | ||
34 | it('Verify that circular array empty works as intended', () => { | |
35 | const circularArray = new CircularArray(); | |
36 | expect(circularArray.empty()).toBe(true); | |
37 | }); | |
38 | ||
39 | it('Verify that circular array full works as intended', () => { | |
40 | const circularArray = new CircularArray(5, 1, 2, 3, 4, 5); | |
41 | expect(circularArray.full()).toBe(true); | |
42 | }); | |
43 | ||
44 | it('Verify that circular array push works as intended', () => { | |
45 | let circularArray = new CircularArray(4); | |
46 | let arrayLength = circularArray.push(1, 2, 3, 4, 5); | |
47 | expect(arrayLength).toBe(circularArray.size); | |
48 | expect(circularArray.length).toBe(circularArray.size); | |
49 | expect(circularArray).toStrictEqual(new CircularArray(4, 2, 3, 4, 5)); | |
50 | arrayLength = circularArray.push(6, 7); | |
51 | expect(arrayLength).toBe(circularArray.size); | |
52 | expect(circularArray.length).toBe(circularArray.size); | |
53 | expect(circularArray).toStrictEqual(new CircularArray(4, 4, 5, 6, 7)); | |
54 | circularArray = new CircularArray(100); | |
55 | arrayLength = circularArray.push(1, 2, 3, 4, 5); | |
56 | expect(arrayLength).toBe(5); | |
57 | expect(circularArray.size).toBe(100); | |
58 | expect(circularArray.length).toBe(5); | |
59 | expect(circularArray).toStrictEqual(new CircularArray(100, 1, 2, 3, 4, 5)); | |
60 | }); | |
61 | ||
62 | it('Verify that circular array splice works as intended', () => { | |
63 | let circularArray = new CircularArray(1000, 1, 2, 3, 4, 5); | |
64 | let deletedItems = circularArray.splice(2); | |
65 | expect(deletedItems).toStrictEqual(new CircularArray(3, 3, 4, 5)); | |
66 | expect(circularArray.length).toBe(2); | |
67 | expect(circularArray).toStrictEqual(new CircularArray(1000, 1, 2)); | |
68 | circularArray = new CircularArray(1000, 1, 2, 3, 4, 5); | |
69 | deletedItems = circularArray.splice(2, 1); | |
70 | expect(deletedItems).toStrictEqual(new CircularArray(1, 3)); | |
71 | expect(circularArray.length).toBe(4); | |
72 | expect(circularArray).toStrictEqual(new CircularArray(1000, 1, 2, 4, 5)); | |
73 | circularArray = new CircularArray(4, 1, 2, 3, 4); | |
74 | deletedItems = circularArray.splice(2, 1, 5, 6); | |
75 | expect(deletedItems).toStrictEqual(new CircularArray(1, 3)); | |
76 | expect(circularArray.length).toBe(4); | |
77 | expect(circularArray).toStrictEqual(new CircularArray(4, 2, 4, 5, 6)); | |
78 | }); | |
79 | ||
80 | it('Verify that circular array concat works as intended', () => { | |
81 | let circularArray = new CircularArray(5, 1, 2, 3, 4, 5); | |
82 | circularArray = circularArray.concat(6, 7); | |
83 | expect(circularArray.length).toBe(5); | |
84 | expect(circularArray).toStrictEqual(new CircularArray(5, 3, 4, 5, 6, 7)); | |
85 | circularArray = new CircularArray(1); | |
86 | circularArray = circularArray.concat(6, 7); | |
87 | expect(circularArray.length).toBe(1); | |
88 | expect(circularArray).toStrictEqual(new CircularArray(1, 7)); | |
89 | }); | |
90 | ||
91 | it('Verify that circular array unshift works as intended', () => { | |
92 | let circularArray = new CircularArray(5, 1, 2, 3, 4, 5); | |
93 | let arrayLength = circularArray.unshift(6, 7); | |
94 | expect(arrayLength).toBe(5); | |
95 | expect(circularArray.length).toBe(5); | |
96 | expect(circularArray).toStrictEqual(new CircularArray(5, 6, 7, 1, 2, 3)); | |
97 | circularArray = new CircularArray(1); | |
98 | arrayLength = circularArray.unshift(6, 7); | |
99 | expect(arrayLength).toBe(1); | |
100 | expect(circularArray.length).toBe(1); | |
101 | expect(circularArray).toStrictEqual(new CircularArray(1, 6)); | |
102 | }); | |
103 | ||
104 | it('Verify that circular array resize works as intended', () => { | |
105 | expect(() => new CircularArray().resize(-1)).toThrowError( | |
106 | new RangeError('Invalid circular array size') | |
107 | ); | |
108 | let circularArray = new CircularArray(5, 1, 2, 3, 4, 5); | |
109 | circularArray.resize(0); | |
110 | expect(circularArray.size).toBe(0); | |
111 | expect(circularArray).toStrictEqual(new CircularArray(0)); | |
112 | circularArray = new CircularArray(5, 1, 2, 3, 4, 5); | |
113 | circularArray.resize(3); | |
114 | expect(circularArray.size).toBe(3); | |
115 | expect(circularArray).toStrictEqual(new CircularArray(3, 1, 2, 3)); | |
116 | circularArray = new CircularArray(5, 1, 2, 3, 4, 5); | |
117 | circularArray.resize(8); | |
118 | expect(circularArray.size).toBe(8); | |
119 | expect(circularArray).toStrictEqual(new CircularArray(8, 1, 2, 3, 4, 5)); | |
120 | }); | |
121 | }); |