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// Copyright 2018-2024 the Deno authors. All rights reserved. MIT license.
import {
assert,
assertEquals,
assertNotEquals,
assertNotStrictEquals,
assertStringIncludes,
assertThrows,
} from "./test_util.ts";
Deno.test({ permissions: {} }, async function performanceNow() {
const { promise, resolve } = Promise.withResolvers<void>();
const start = performance.now();
let totalTime = 0;
setTimeout(() => {
const end = performance.now();
totalTime = end - start;
resolve();
}, 10);
await promise;
assert(totalTime >= 10);
});
Deno.test(function timeOrigin() {
const origin = performance.timeOrigin;
assert(origin > 0);
assert(Date.now() >= origin);
});
Deno.test(function performanceToJSON() {
const json = performance.toJSON();
assert("timeOrigin" in json);
assert(json.timeOrigin === performance.timeOrigin);
// check there are no other keys
assertEquals(Object.keys(json).length, 1);
});
Deno.test(function clearMarks() {
performance.mark("a");
performance.mark("a");
performance.mark("b");
performance.mark("c");
const marksNum = performance.getEntriesByType("mark").length;
performance.clearMarks("a");
assertEquals(performance.getEntriesByType("mark").length, marksNum - 2);
performance.clearMarks();
assertEquals(performance.getEntriesByType("mark").length, 0);
});
Deno.test(function clearMeasures() {
performance.measure("from-start");
performance.mark("a");
performance.measure("from-mark-a", "a");
performance.measure("from-start");
performance.measure("from-mark-a", "a");
performance.mark("b");
performance.measure("between-a-and-b", "a", "b");
const measuresNum = performance.getEntriesByType("measure").length;
performance.clearMeasures("from-start");
assertEquals(performance.getEntriesByType("measure").length, measuresNum - 2);
performance.clearMeasures();
assertEquals(performance.getEntriesByType("measure").length, 0);
performance.clearMarks();
});
Deno.test(function performanceMark() {
const mark = performance.mark("test");
assert(mark instanceof PerformanceMark);
assertEquals(mark.detail, null);
assertEquals(mark.name, "test");
assertEquals(mark.entryType, "mark");
assert(mark.startTime > 0);
assertEquals(mark.duration, 0);
const entries = performance.getEntries();
assert(entries[entries.length - 1] === mark);
const markEntries = performance.getEntriesByName("test", "mark");
assert(markEntries[markEntries.length - 1] === mark);
});
Deno.test(function performanceMarkDetail() {
const detail = { foo: "foo" };
const mark = performance.mark("test", { detail });
assert(mark instanceof PerformanceMark);
assertEquals(mark.detail, { foo: "foo" });
assertNotStrictEquals(mark.detail, detail);
});
Deno.test(function performanceMarkDetailArrayBuffer() {
const detail = new ArrayBuffer(10);
const mark = performance.mark("test", { detail });
assert(mark instanceof PerformanceMark);
assertEquals(mark.detail, new ArrayBuffer(10));
assertNotStrictEquals(mark.detail, detail);
});
Deno.test(function performanceMarkDetailSubTypedArray() {
class SubUint8Array extends Uint8Array {}
const detail = new SubUint8Array([1, 2]);
const mark = performance.mark("test", { detail });
assert(mark instanceof PerformanceMark);
assertEquals(mark.detail, new Uint8Array([1, 2]));
assertNotStrictEquals(mark.detail, detail);
});
Deno.test(function performanceMeasure() {
const markName1 = "mark1";
const measureName1 = "measure1";
const measureName2 = "measure2";
const mark1 = performance.mark(markName1);
// Measure against the inaccurate-but-known-good wall clock
const now = new Date().valueOf();
return new Promise((resolve, reject) => {
setTimeout(() => {
try {
const later = new Date().valueOf();
const measure1 = performance.measure(measureName1, markName1);
const measure2 = performance.measure(
measureName2,
undefined,
markName1,
);
assert(measure1 instanceof PerformanceMeasure);
assertEquals(measure1.detail, null);
assertEquals(measure1.name, measureName1);
assertEquals(measure1.entryType, "measure");
assert(measure1.startTime > 0);
assertEquals(measure2.startTime, 0);
assertEquals(mark1.startTime, measure1.startTime);
assertEquals(mark1.startTime, measure2.duration);
assert(
measure1.duration >= 100,
`duration below 100ms: ${measure1.duration}`,
);
assert(
measure1.duration < (later - now) * 1.50,
`duration exceeds 150% of wallclock time: ${measure1.duration}ms vs ${
later - now
}ms`,
);
const entries = performance.getEntries();
assert(entries[entries.length - 1] === measure2);
const entriesByName = performance.getEntriesByName(
measureName1,
"measure",
);
assert(entriesByName[entriesByName.length - 1] === measure1);
const measureEntries = performance.getEntriesByType("measure");
assert(measureEntries[measureEntries.length - 1] === measure2);
} catch (e) {
return reject(e);
}
resolve();
}, 100);
});
});
Deno.test(function performanceMeasureUseMostRecentMark() {
const markName1 = "mark1";
const measureName1 = "measure1";
const mark1 = performance.mark(markName1);
return new Promise((resolve, reject) => {
setTimeout(() => {
try {
const laterMark1 = performance.mark(markName1);
const measure1 = performance.measure(measureName1, markName1);
assertNotEquals(mark1.startTime, measure1.startTime);
assertEquals(laterMark1.startTime, measure1.startTime);
} catch (e) {
return reject(e);
}
resolve();
}, 100);
});
});
Deno.test(function performanceCustomInspectFunction() {
assertStringIncludes(Deno.inspect(performance), "Performance");
assertStringIncludes(
Deno.inspect(Performance.prototype),
"Performance",
);
});
Deno.test(function performanceMarkCustomInspectFunction() {
const mark1 = performance.mark("mark1");
assertStringIncludes(Deno.inspect(mark1), "PerformanceMark");
assertStringIncludes(
Deno.inspect(PerformanceMark.prototype),
"PerformanceMark",
);
});
Deno.test(function performanceMeasureCustomInspectFunction() {
const measure1 = performance.measure("measure1");
assertStringIncludes(Deno.inspect(measure1), "PerformanceMeasure");
assertStringIncludes(
Deno.inspect(PerformanceMeasure.prototype),
"PerformanceMeasure",
);
});
Deno.test(function performanceIllegalConstructor() {
assertThrows(() => new Performance(), TypeError, "Illegal constructor");
assertEquals(Performance.length, 0);
});
Deno.test(function performanceEntryIllegalConstructor() {
assertThrows(() => new PerformanceEntry(), TypeError, "Illegal constructor");
assertEquals(PerformanceEntry.length, 0);
});
Deno.test(function performanceMeasureIllegalConstructor() {
assertThrows(
() => new PerformanceMeasure(),
TypeError,
"Illegal constructor",
);
});
Deno.test(function performanceIsEventTarget() {
assert(performance instanceof EventTarget);
return new Promise((resolve) => {
const handler = () => {
resolve();
};
performance.addEventListener("test", handler, { once: true });
performance.dispatchEvent(new Event("test"));
});
});
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