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test(function() {
performance.clearMarks();
const detail = { randomInfo: 123 }
const markEntry = new PerformanceMark("A", { detail });
assert_equals(markEntry.detail.randomInfo, detail.randomInfo);
assert_not_equals(markEntry.detail, detail);
}, "The detail property in the mark constructor should be structured-clone.");
test(function() {
performance.clearMarks();
const detail = { randomInfo: 123 }
const markEntry = performance.mark("A", { detail });
assert_equals(markEntry.detail.randomInfo, detail.randomInfo);
assert_not_equals(markEntry.detail, detail);
}, "The detail property in the mark method should be structured-clone.");
test(function() {
performance.clearMarks();
const markEntry = performance.mark("A");
assert_equals(markEntry.detail, null);
}, "When accessing detail from a mark entry and the detail is not provided, just return a null value.");
test(function() {
performance.clearMarks();
const detail = { unserializable: Symbol() };
assert_throws_dom("DataCloneError", ()=>{
new PerformanceMark("A", { detail });
}, "Trying to structured-serialize a Symbol.");
}, "Mark: Throw an exception when the detail property cannot be structured-serialized.");
test(function() {
performance.clearMeasures();
const detail = { randomInfo: 123 }
const measureEntry = performance.measure("A", { start: 0, detail });
assert_equals(measureEntry.detail.randomInfo, detail.randomInfo);
assert_not_equals(measureEntry.detail, detail);
}, "The detail property in the measure method should be structured-clone.");
test(function() {
performance.clearMeasures();
const detail = { randomInfo: 123 }
const measureEntry = performance.measure("A", { start: 0, detail });
assert_equals(measureEntry.detail, measureEntry.detail);
}, "The detail property in the measure method should be the same reference.");
test(function() {
performance.clearMeasures();
const measureEntry = performance.measure("A");
assert_equals(measureEntry.detail, null);
}, "When accessing detail from a measure entry and the detail is not provided, just return a null value.");
test(function() {
performance.clearMeasures();
const detail = { unserializable: Symbol() };
assert_throws_dom("DataCloneError", ()=>{
performance.measure("A", { start: 0, detail });
}, "Trying to structured-serialize a Symbol.");
}, "Measure: Throw an exception when the detail property cannot be structured-serialized.");
test(function() {
const bar = { 1: 2 };
const detail = { foo: 1, bar };
const mark = performance.mark("m", { detail });
detail.foo = 2;
assert_equals(mark.detail.foo, 1);
}, "The detail object is cloned when passed to mark API.");
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