source: trip-planner-front/node_modules/hdr-histogram-js/src/encoding.spec.ts@ 188ee53

Last change on this file since 188ee53 was 6a3a178, checked in by Ema <ema_spirova@…>, 3 years ago

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1/*
2 * This is a TypeScript port of the original Java version, which was written by
3 * Gil Tene as described in
4 * https://github.com/HdrHistogram/HdrHistogram
5 * and released to the public domain, as explained at
6 * http://creativecommons.org/publicdomain/zero/1.0/
7 */
8import { Int32Histogram, WasmHistogram } from "./index";
9import { initWebAssembly } from "./wasm";
10import {
11 encodeIntoCompressedBase64,
12 decodeFromCompressedBase64,
13} from "./encoding";
14import Histogram from "./Histogram";
15
16describe("Histogram encoding", () => {
17 it("should encode and decode an histogram", () => {
18 // given
19 const histogram = new Int32Histogram(1, 2, 3);
20 histogram.autoResize = true;
21 histogram.recordValue(32415);
22 // when
23 const b64 = encodeIntoCompressedBase64(histogram);
24 // then
25 const decodedHistogram = decodeFromCompressedBase64(b64);
26 expect(decodedHistogram.toJSON()).toStrictEqual(histogram.toJSON());
27 });
28
29 it("should decode and decompress reading a base64 string", () => {
30 // given
31 const base64String = "HISTFAAAAB542pNpmSzMwMDAxAABzFCaEUoz2X+AMIKZAEARAtM=";
32 // when
33 const histogram = decodeFromCompressedBase64(base64String);
34 // then
35 expect(histogram.mean).toBe(42);
36 expect(histogram.totalCount).toBe(1);
37 });
38
39 it("should decode and decompress a big base64 string", () => {
40 // given
41 const base64String =
42 "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";
43 // when
44 const histogram = decodeFromCompressedBase64(base64String);
45 // then
46 expect(histogram.totalCount).toBe(10000);
47 });
48
49 it("should encode and compress an histogram to a base64 string", () => {
50 // given
51 const histogram = new Int32Histogram(1, 2, 3);
52 histogram.recordValue(42);
53 // when
54 const base64Histogram = encodeIntoCompressedBase64(histogram);
55 // then
56 expect(base64Histogram).toBe(
57 "HISTFAAAAB94nJNpmSzMwMDABMSMQMzMAAGMUJoJxg9mAgA1TQGm"
58 );
59 });
60
61 it("should throw an error when trying to decompress an histogram using V1 encoding", () => {
62 // given
63 const base64V1EncodingString =
64 "HISTIgAAAFd42pNpmazIwMAYxgABTBDKT4GBgdnNYMcCBvsPUBkeBkYGZqA8MwMbAzsDC5DFBCTZgJCDQY1BjkGLQZRBlUEPCB8zWDCYMxgDZZkZhgJgHDibAY8JB/A=";
65 // when & then
66 expect(() =>
67 decodeFromCompressedBase64(base64V1EncodingString)
68 ).toThrowError("Encoding not supported");
69 });
70});
71
72describe("WASM Histogram encoding", () => {
73 let histogram: Histogram;
74
75 beforeAll(initWebAssembly);
76
77 afterEach(() => {
78 if (histogram) {
79 histogram.destroy();
80 }
81 });
82
83 it("should decode and decompress a big base64 string", () => {
84 // given
85 const base64String =
86 "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";
87 // when
88 histogram = decodeFromCompressedBase64(base64String, 32, true);
89 // then
90 //console.log(histogram);
91 expect(histogram.totalCount).toBe(10000);
92 });
93
94 it("should decode and decompress a big base64 string to a wasm packed histogram", () => {
95 // given
96 const base64String =
97 "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";
98 // when
99 histogram = decodeFromCompressedBase64(base64String, "packed", true);
100 // then
101 expect(histogram.totalCount).toBe(10000);
102 });
103
104 it("should encode and decode an histogram", () => {
105 // given
106 histogram = WasmHistogram.build();
107 histogram.recordValue(32415482);
108 // when
109 const b64 = encodeIntoCompressedBase64(histogram);
110 // then
111 const decodedHistogram = decodeFromCompressedBase64(b64);
112 expect(decodedHistogram.getValueAtPercentile(50)).toBe(
113 histogram.getValueAtPercentile(50)
114 );
115 });
116});
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