| [6a3a178] | 1 | "use strict";
|
|---|
| 2 | Object.defineProperty(exports, "__esModule", { value: true });
|
|---|
| 3 | const PackedHistogram_1 = require("./PackedHistogram");
|
|---|
| 4 | describe("Packed histogram", () => {
|
|---|
| 5 | it("should compute median value in first bucket", () => {
|
|---|
| 6 | // given
|
|---|
| 7 | const histogram = new PackedHistogram_1.default(1, Number.MAX_SAFE_INTEGER, 3);
|
|---|
| 8 | histogram.recordValue(123456);
|
|---|
| 9 | histogram.recordValue(127);
|
|---|
| 10 | histogram.recordValue(42);
|
|---|
| 11 | // when
|
|---|
| 12 | const medianValue = histogram.getValueAtPercentile(50);
|
|---|
| 13 | // then
|
|---|
| 14 | expect(medianValue).toBe(127);
|
|---|
| 15 | });
|
|---|
| 16 | it("should compute same values when new or reseted", () => {
|
|---|
| 17 | // given
|
|---|
| 18 | const histogram = new PackedHistogram_1.default(1, 2, 3);
|
|---|
| 19 | const histogram2 = new PackedHistogram_1.default(1, 2, 3);
|
|---|
| 20 | histogram.autoResize = true;
|
|---|
| 21 | histogram2.autoResize = true;
|
|---|
| 22 | [1, 49026].forEach((v) => histogram.recordValue(v));
|
|---|
| 23 | // when
|
|---|
| 24 | histogram.reset();
|
|---|
| 25 | [7, 67, 42357, 805017].forEach((v) => {
|
|---|
| 26 | histogram.recordValue(v);
|
|---|
| 27 | histogram2.recordValue(v);
|
|---|
| 28 | });
|
|---|
| 29 | // then
|
|---|
| 30 | expect(histogram.getValueAtPercentile(5)).toBe(histogram2.getValueAtPercentile(5));
|
|---|
| 31 | });
|
|---|
| 32 | it("should compute value outside first bucket with an error less than 1000", () => {
|
|---|
| 33 | // given
|
|---|
| 34 | const histogram = new PackedHistogram_1.default(1, 123456, 2);
|
|---|
| 35 | histogram.recordValue(5234);
|
|---|
| 36 | histogram.recordValue(127);
|
|---|
| 37 | histogram.recordValue(42);
|
|---|
| 38 | // when
|
|---|
| 39 | const percentileValue = histogram.getValueAtPercentile(90);
|
|---|
| 40 | // then
|
|---|
| 41 | expect(Math.abs(percentileValue - 5234)).toBeLessThan(100);
|
|---|
| 42 | });
|
|---|
| 43 | it("should resize underlying packed array when recording an out of bound value", () => {
|
|---|
| 44 | // given
|
|---|
| 45 | const histogram = new PackedHistogram_1.default(1, 2, 3);
|
|---|
| 46 | histogram.autoResize = true;
|
|---|
| 47 | // when
|
|---|
| 48 | histogram.recordValue(123456);
|
|---|
| 49 | // then
|
|---|
| 50 | expect(histogram.totalCount).toBe(1);
|
|---|
| 51 | });
|
|---|
| 52 | });
|
|---|
| 53 | describe("Histogram clearing support", () => {
|
|---|
| 54 | it("should reset data in order to reuse histogram", () => {
|
|---|
| 55 | // given
|
|---|
| 56 | const histogram = new PackedHistogram_1.default(1, Number.MAX_SAFE_INTEGER, 2);
|
|---|
| 57 | const histogram2 = new PackedHistogram_1.default(1, Number.MAX_SAFE_INTEGER, 2);
|
|---|
| 58 | histogram.startTimeStampMsec = 42;
|
|---|
| 59 | histogram.endTimeStampMsec = 56;
|
|---|
| 60 | histogram.tag = "blabla";
|
|---|
| 61 | histogram.recordValue(10);
|
|---|
| 62 | histogram.recordValue(1000);
|
|---|
| 63 | histogram.recordValue(10000000);
|
|---|
| 64 | // when
|
|---|
| 65 | histogram.reset();
|
|---|
| 66 | // then
|
|---|
| 67 | expect(histogram.totalCount).toBe(0);
|
|---|
| 68 | expect(histogram.startTimeStampMsec).toBe(0);
|
|---|
| 69 | expect(histogram.endTimeStampMsec).toBe(0);
|
|---|
| 70 | //expect(histogram.tag).toBe(NO_TAG);
|
|---|
| 71 | expect(histogram.maxValue).toBe(0);
|
|---|
| 72 | expect(histogram.minNonZeroValue).toBe(Number.MAX_SAFE_INTEGER);
|
|---|
| 73 | expect(histogram.getValueAtPercentile(99.999)).toBe(0);
|
|---|
| 74 | });
|
|---|
| 75 | });
|
|---|
| 76 | //# sourceMappingURL=PackedHistogram.spec.js.map |
|---|
