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