source: trip-planner-front/node_modules/hdr-histogram-js/dist/Recorder.spec.js@ 6a80231

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
const Recorder_1 = require("./Recorder");
const Int32Histogram_1 = require("./Int32Histogram");
const PackedHistogram_1 = require("./PackedHistogram");
const wasm_1 = require("./wasm");
describe("Recorder", () => {
    beforeAll(wasm_1.initWebAssembly);
    it("should record value", () => {
        // given
        const recorder = new Recorder_1.default();
        // when
        recorder.recordValue(123);
        // then
        const histogram = recorder.getIntervalHistogram();
        expect(histogram.totalCount).toBe(1);
    });
    it("should record value in a packed histogram", () => {
        // given
        const recorder = new Recorder_1.default({
            numberOfSignificantValueDigits: 5,
            bitBucketSize: "packed",
        });
        // when
        recorder.recordValue(123);
        // then
        expect(recorder.getIntervalHistogram() instanceof PackedHistogram_1.default).toBe(true);
        expect(recorder.getIntervalHistogram() instanceof PackedHistogram_1.default).toBe(true);
    });
    it("should record value in a WASM histogram", () => {
        // given
        const recorder = new Recorder_1.default({
            numberOfSignificantValueDigits: 5,
            bitBucketSize: "packed",
            useWebAssembly: true,
        });
        try {
            // when
            recorder.recordValue(123);
            // then
            expect(recorder.getIntervalHistogram() instanceof wasm_1.WasmHistogram).toBe(true);
        }
        finally {
            recorder.destroy();
        }
    });
    it("should record value with count", () => {
        // given
        const recorder = new Recorder_1.default();
        // when
        recorder.recordValueWithCount(123, 3);
        // then
        const histogram = recorder.getIntervalHistogram();
        expect(histogram.totalCount).toBe(3);
    });
    it("should record value with expected interval", () => {
        // given
        const recorder = new Recorder_1.default();
        // when
        recorder.recordValueWithExpectedInterval(223, 100);
        // then
        const histogram = recorder.getIntervalHistogram();
        expect(histogram.totalCount).toBe(2);
    });
    it("should record value in a packed histogram", () => {
        // given
        const recorder = new Recorder_1.default({ bitBucketSize: "packed" });
        recorder.recordValue(42);
        // when
        const histogram = recorder.getIntervalHistogram();
        // then
        expect(histogram instanceof PackedHistogram_1.default).toBe(true);
    });
    it("should record value only on one interval histogram", () => {
        // given
        const recorder = new Recorder_1.default();
        // when
        recorder.recordValue(123);
        const firstHistogram = recorder.getIntervalHistogram();
        // then
        const secondHistogram = recorder.getIntervalHistogram();
        expect(secondHistogram.totalCount).toBe(0);
    });
    it("should not record value on returned interval histogram", () => {
        // given
        const recorder = new Recorder_1.default();
        const firstHistogram = recorder.getIntervalHistogram();
        const secondHistogram = recorder.getIntervalHistogram();
        // when
        firstHistogram.recordValue(42); // should have 0 impact on recorder
        const thirdHistogram = recorder.getIntervalHistogram();
        // then
        expect(thirdHistogram.totalCount).toBe(0);
    });
    it("should return interval histograms with expected significant digits", () => {
        // given
        const recorder = new Recorder_1.default({ numberOfSignificantValueDigits: 4 });
        const firstHistogram = recorder.getIntervalHistogram();
        const secondHistogram = recorder.getIntervalHistogram();
        // when
        const thirdHistogram = recorder.getIntervalHistogram();
        // then
        expect(thirdHistogram.numberOfSignificantValueDigits).toBe(4);
    });
    it("should return recycled histograms when asking for interval histogram", () => {
        // given
        const recorder = new Recorder_1.default();
        const firstHistogram = recorder.getIntervalHistogram();
        // when
        const secondHistogram = recorder.getIntervalHistogram(firstHistogram);
        const thirdHistogram = recorder.getIntervalHistogram();
        // then
        expect(thirdHistogram === firstHistogram).toBe(true);
    });
    it("should throw an error when trying to recycle an histogram not created by the recorder", () => {
        // given
        const recorder = new Recorder_1.default();
        const somehistogram = new Int32Histogram_1.default(1, 2, 3);
        // when & then
        expect(() => recorder.getIntervalHistogram(somehistogram)).toThrowError();
    });
    it("should reset histogram when recycling", () => {
        // given
        const recorder = new Recorder_1.default();
        recorder.recordValue(42);
        const firstHistogram = recorder.getIntervalHistogram();
        // when
        const secondHistogram = recorder.getIntervalHistogram(firstHistogram);
        const thirdHistogram = recorder.getIntervalHistogram();
        // then
        expect(thirdHistogram.totalCount).toBe(0);
    });
    it("should set timestamps on first interval histogram", () => {
        // given
        let currentTime = 42;
        let clock = () => currentTime;
        const recorder = new Recorder_1.default({}, clock);
        // when
        currentTime = 123;
        const histogram = recorder.getIntervalHistogram();
        // then
        expect(histogram.startTimeStampMsec).toBe(42);
        expect(histogram.endTimeStampMsec).toBe(123);
    });
    it("should set timestamps on any interval histogram", () => {
        // given
        let currentTime = 42;
        let clock = () => currentTime;
        const recorder = new Recorder_1.default({}, clock);
        currentTime = 51;
        const firstHistogram = recorder.getIntervalHistogram();
        // when
        currentTime = 56;
        const secondHistogram = recorder.getIntervalHistogram();
        // then
        expect(secondHistogram.startTimeStampMsec).toBe(51);
        expect(secondHistogram.endTimeStampMsec).toBe(56);
    });
    it("should copy interval histogram", () => {
        // given
        let currentTime = 42;
        let clock = () => currentTime;
        const recorder = new Recorder_1.default({ numberOfSignificantValueDigits: 4 }, clock);
        recorder.recordValue(123);
        // when
        const histogram = new Int32Histogram_1.default(1, Number.MAX_SAFE_INTEGER, 3);
        currentTime = 51;
        recorder.getIntervalHistogramInto(histogram);
        // then
        expect(histogram.totalCount).toBe(1);
        expect(histogram.startTimeStampMsec).toBe(42);
        expect(histogram.endTimeStampMsec).toBe(51);
    });
    it("should reset values and timestamp", () => {
        // given
        let currentTime = 42;
        let clock = () => currentTime;
        const recorder = new Recorder_1.default({ numberOfSignificantValueDigits: 4 }, clock);
        recorder.recordValue(123);
        // when
        currentTime = 55;
        recorder.reset();
        const histogram = recorder.getIntervalHistogram();
        // then
        expect(histogram.totalCount).toBe(0);
        expect(histogram.startTimeStampMsec).toBe(55);
    });
});
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