[6a3a178] | 1 | import Recorder from "./Recorder";
|
---|
| 2 | import Int32Histogram from "./Int32Histogram";
|
---|
| 3 | import PackedHistogram from "./PackedHistogram";
|
---|
| 4 | import JsHistogram from "./JsHistogram";
|
---|
| 5 | import { initWebAssembly, WasmHistogram } from "./wasm";
|
---|
| 6 |
|
---|
| 7 | describe("Recorder", () => {
|
---|
| 8 | beforeAll(initWebAssembly);
|
---|
| 9 |
|
---|
| 10 | it("should record value", () => {
|
---|
| 11 | // given
|
---|
| 12 | const recorder = new Recorder();
|
---|
| 13 | // when
|
---|
| 14 | recorder.recordValue(123);
|
---|
| 15 | // then
|
---|
| 16 | const histogram = recorder.getIntervalHistogram();
|
---|
| 17 | expect(histogram.totalCount).toBe(1);
|
---|
| 18 | });
|
---|
| 19 |
|
---|
| 20 | it("should record value in a packed histogram", () => {
|
---|
| 21 | // given
|
---|
| 22 | const recorder = new Recorder({
|
---|
| 23 | numberOfSignificantValueDigits: 5,
|
---|
| 24 | bitBucketSize: "packed",
|
---|
| 25 | });
|
---|
| 26 | // when
|
---|
| 27 | recorder.recordValue(123);
|
---|
| 28 | // then
|
---|
| 29 | expect(recorder.getIntervalHistogram() instanceof PackedHistogram).toBe(
|
---|
| 30 | true
|
---|
| 31 | );
|
---|
| 32 | expect(recorder.getIntervalHistogram() instanceof PackedHistogram).toBe(
|
---|
| 33 | true
|
---|
| 34 | );
|
---|
| 35 | });
|
---|
| 36 |
|
---|
| 37 | it("should record value in a WASM histogram", () => {
|
---|
| 38 | // given
|
---|
| 39 | const recorder = new Recorder({
|
---|
| 40 | numberOfSignificantValueDigits: 5,
|
---|
| 41 | bitBucketSize: "packed",
|
---|
| 42 | useWebAssembly: true,
|
---|
| 43 | });
|
---|
| 44 | try {
|
---|
| 45 | // when
|
---|
| 46 | recorder.recordValue(123);
|
---|
| 47 | // then
|
---|
| 48 | expect(recorder.getIntervalHistogram() instanceof WasmHistogram).toBe(
|
---|
| 49 | true
|
---|
| 50 | );
|
---|
| 51 | } finally {
|
---|
| 52 | recorder.destroy();
|
---|
| 53 | }
|
---|
| 54 | });
|
---|
| 55 |
|
---|
| 56 | it("should record value with count", () => {
|
---|
| 57 | // given
|
---|
| 58 | const recorder = new Recorder();
|
---|
| 59 | // when
|
---|
| 60 | recorder.recordValueWithCount(123, 3);
|
---|
| 61 | // then
|
---|
| 62 | const histogram = recorder.getIntervalHistogram();
|
---|
| 63 | expect(histogram.totalCount).toBe(3);
|
---|
| 64 | });
|
---|
| 65 |
|
---|
| 66 | it("should record value with expected interval", () => {
|
---|
| 67 | // given
|
---|
| 68 | const recorder = new Recorder();
|
---|
| 69 | // when
|
---|
| 70 | recorder.recordValueWithExpectedInterval(223, 100);
|
---|
| 71 | // then
|
---|
| 72 | const histogram = recorder.getIntervalHistogram();
|
---|
| 73 | expect(histogram.totalCount).toBe(2);
|
---|
| 74 | });
|
---|
| 75 |
|
---|
| 76 | it("should record value in a packed histogram", () => {
|
---|
| 77 | // given
|
---|
| 78 | const recorder = new Recorder({ bitBucketSize: "packed" });
|
---|
| 79 | recorder.recordValue(42);
|
---|
| 80 | // when
|
---|
| 81 | const histogram = recorder.getIntervalHistogram();
|
---|
| 82 | // then
|
---|
| 83 | expect(histogram instanceof PackedHistogram).toBe(true);
|
---|
| 84 | });
|
---|
| 85 |
|
---|
| 86 | it("should record value only on one interval histogram", () => {
|
---|
| 87 | // given
|
---|
| 88 | const recorder = new Recorder();
|
---|
| 89 | // when
|
---|
| 90 | recorder.recordValue(123);
|
---|
| 91 | const firstHistogram = recorder.getIntervalHistogram();
|
---|
| 92 | // then
|
---|
| 93 | const secondHistogram = recorder.getIntervalHistogram();
|
---|
| 94 | expect(secondHistogram.totalCount).toBe(0);
|
---|
| 95 | });
|
---|
| 96 |
|
---|
| 97 | it("should not record value on returned interval histogram", () => {
|
---|
| 98 | // given
|
---|
| 99 | const recorder = new Recorder();
|
---|
| 100 | const firstHistogram = recorder.getIntervalHistogram();
|
---|
| 101 | const secondHistogram = recorder.getIntervalHistogram();
|
---|
| 102 | // when
|
---|
| 103 | firstHistogram.recordValue(42); // should have 0 impact on recorder
|
---|
| 104 | const thirdHistogram = recorder.getIntervalHistogram();
|
---|
| 105 | // then
|
---|
| 106 | expect(thirdHistogram.totalCount).toBe(0);
|
---|
| 107 | });
|
---|
| 108 |
|
---|
| 109 | it("should return interval histograms with expected significant digits", () => {
|
---|
| 110 | // given
|
---|
| 111 | const recorder = new Recorder({ numberOfSignificantValueDigits: 4 });
|
---|
| 112 | const firstHistogram = recorder.getIntervalHistogram();
|
---|
| 113 | const secondHistogram = recorder.getIntervalHistogram();
|
---|
| 114 | // when
|
---|
| 115 | const thirdHistogram = recorder.getIntervalHistogram();
|
---|
| 116 | // then
|
---|
| 117 | expect((thirdHistogram as JsHistogram).numberOfSignificantValueDigits).toBe(
|
---|
| 118 | 4
|
---|
| 119 | );
|
---|
| 120 | });
|
---|
| 121 |
|
---|
| 122 | it("should return recycled histograms when asking for interval histogram", () => {
|
---|
| 123 | // given
|
---|
| 124 | const recorder = new Recorder();
|
---|
| 125 | const firstHistogram = recorder.getIntervalHistogram();
|
---|
| 126 | // when
|
---|
| 127 | const secondHistogram = recorder.getIntervalHistogram(firstHistogram);
|
---|
| 128 | const thirdHistogram = recorder.getIntervalHistogram();
|
---|
| 129 | // then
|
---|
| 130 | expect(thirdHistogram === firstHistogram).toBe(true);
|
---|
| 131 | });
|
---|
| 132 |
|
---|
| 133 | it("should throw an error when trying to recycle an histogram not created by the recorder", () => {
|
---|
| 134 | // given
|
---|
| 135 | const recorder = new Recorder();
|
---|
| 136 | const somehistogram = new Int32Histogram(1, 2, 3);
|
---|
| 137 | // when & then
|
---|
| 138 | expect(() => recorder.getIntervalHistogram(somehistogram)).toThrowError();
|
---|
| 139 | });
|
---|
| 140 |
|
---|
| 141 | it("should reset histogram when recycling", () => {
|
---|
| 142 | // given
|
---|
| 143 | const recorder = new Recorder();
|
---|
| 144 | recorder.recordValue(42);
|
---|
| 145 | const firstHistogram = recorder.getIntervalHistogram();
|
---|
| 146 | // when
|
---|
| 147 | const secondHistogram = recorder.getIntervalHistogram(firstHistogram);
|
---|
| 148 | const thirdHistogram = recorder.getIntervalHistogram();
|
---|
| 149 | // then
|
---|
| 150 | expect(thirdHistogram.totalCount).toBe(0);
|
---|
| 151 | });
|
---|
| 152 |
|
---|
| 153 | it("should set timestamps on first interval histogram", () => {
|
---|
| 154 | // given
|
---|
| 155 | let currentTime = 42;
|
---|
| 156 | let clock = () => currentTime;
|
---|
| 157 | const recorder = new Recorder({}, clock);
|
---|
| 158 | // when
|
---|
| 159 | currentTime = 123;
|
---|
| 160 | const histogram = recorder.getIntervalHistogram();
|
---|
| 161 | // then
|
---|
| 162 | expect(histogram.startTimeStampMsec).toBe(42);
|
---|
| 163 | expect(histogram.endTimeStampMsec).toBe(123);
|
---|
| 164 | });
|
---|
| 165 |
|
---|
| 166 | it("should set timestamps on any interval histogram", () => {
|
---|
| 167 | // given
|
---|
| 168 | let currentTime = 42;
|
---|
| 169 | let clock = () => currentTime;
|
---|
| 170 | const recorder = new Recorder({}, clock);
|
---|
| 171 | currentTime = 51;
|
---|
| 172 | const firstHistogram = recorder.getIntervalHistogram();
|
---|
| 173 | // when
|
---|
| 174 | currentTime = 56;
|
---|
| 175 | const secondHistogram = recorder.getIntervalHistogram();
|
---|
| 176 | // then
|
---|
| 177 | expect(secondHistogram.startTimeStampMsec).toBe(51);
|
---|
| 178 | expect(secondHistogram.endTimeStampMsec).toBe(56);
|
---|
| 179 | });
|
---|
| 180 |
|
---|
| 181 | it("should copy interval histogram", () => {
|
---|
| 182 | // given
|
---|
| 183 | let currentTime = 42;
|
---|
| 184 | let clock = () => currentTime;
|
---|
| 185 | const recorder = new Recorder({ numberOfSignificantValueDigits: 4 }, clock);
|
---|
| 186 | recorder.recordValue(123);
|
---|
| 187 | // when
|
---|
| 188 | const histogram = new Int32Histogram(1, Number.MAX_SAFE_INTEGER, 3);
|
---|
| 189 | currentTime = 51;
|
---|
| 190 | recorder.getIntervalHistogramInto(histogram);
|
---|
| 191 | // then
|
---|
| 192 | expect(histogram.totalCount).toBe(1);
|
---|
| 193 | expect(histogram.startTimeStampMsec).toBe(42);
|
---|
| 194 | expect(histogram.endTimeStampMsec).toBe(51);
|
---|
| 195 | });
|
---|
| 196 |
|
---|
| 197 | it("should reset values and timestamp", () => {
|
---|
| 198 | // given
|
---|
| 199 | let currentTime = 42;
|
---|
| 200 | let clock = () => currentTime;
|
---|
| 201 | const recorder = new Recorder({ numberOfSignificantValueDigits: 4 }, clock);
|
---|
| 202 | recorder.recordValue(123);
|
---|
| 203 | // when
|
---|
| 204 | currentTime = 55;
|
---|
| 205 | recorder.reset();
|
---|
| 206 | const histogram = recorder.getIntervalHistogram();
|
---|
| 207 | // then
|
---|
| 208 | expect(histogram.totalCount).toBe(0);
|
---|
| 209 | expect(histogram.startTimeStampMsec).toBe(55);
|
---|
| 210 | });
|
---|
| 211 | });
|
---|