This is a testharness.js-based test.
Found 54 FAIL, 0 TIMEOUT, 0 NOTRUN.
[FAIL] BackgroundFetchManager interface: existence and properties of interface object
assert_own_property: self does not have own property "BackgroundFetchManager" expected property "BackgroundFetchManager" missing
[FAIL] BackgroundFetchManager interface object length
assert_own_property: self does not have own property "BackgroundFetchManager" expected property "BackgroundFetchManager" missing
[FAIL] BackgroundFetchManager interface object name
assert_own_property: self does not have own property "BackgroundFetchManager" expected property "BackgroundFetchManager" missing
[FAIL] BackgroundFetchManager interface: existence and properties of interface prototype object
assert_own_property: self does not have own property "BackgroundFetchManager" expected property "BackgroundFetchManager" missing
[FAIL] BackgroundFetchManager interface: existence and properties of interface prototype object's "constructor" property
assert_own_property: self does not have own property "BackgroundFetchManager" expected property "BackgroundFetchManager" missing
[FAIL] BackgroundFetchManager interface: existence and properties of interface prototype object's @@unscopables property
assert_own_property: self does not have own property "BackgroundFetchManager" expected property "BackgroundFetchManager" missing
[FAIL] BackgroundFetchManager interface: operation fetch(DOMString, (RequestInfo or sequence<RequestInfo>), optional BackgroundFetchOptions)
assert_own_property: self does not have own property "BackgroundFetchManager" expected property "BackgroundFetchManager" missing
[FAIL] BackgroundFetchManager interface: operation get(DOMString)
assert_own_property: self does not have own property "BackgroundFetchManager" expected property "BackgroundFetchManager" missing
[FAIL] BackgroundFetchManager interface: operation getIds()
assert_own_property: self does not have own property "BackgroundFetchManager" expected property "BackgroundFetchManager" missing
[FAIL] BackgroundFetchRegistration interface: existence and properties of interface object
assert_own_property: self does not have own property "BackgroundFetchRegistration" expected property "BackgroundFetchRegistration" missing
[FAIL] BackgroundFetchRegistration interface object length
assert_own_property: self does not have own property "BackgroundFetchRegistration" expected property "BackgroundFetchRegistration" missing
[FAIL] BackgroundFetchRegistration interface object name
assert_own_property: self does not have own property "BackgroundFetchRegistration" expected property "BackgroundFetchRegistration" missing
[FAIL] BackgroundFetchRegistration interface: existence and properties of interface prototype object
assert_own_property: self does not have own property "BackgroundFetchRegistration" expected property "BackgroundFetchRegistration" missing
[FAIL] BackgroundFetchRegistration interface: existence and properties of interface prototype object's "constructor" property
assert_own_property: self does not have own property "BackgroundFetchRegistration" expected property "BackgroundFetchRegistration" missing
[FAIL] BackgroundFetchRegistration interface: existence and properties of interface prototype object's @@unscopables property
assert_own_property: self does not have own property "BackgroundFetchRegistration" expected property "BackgroundFetchRegistration" missing
[FAIL] BackgroundFetchRegistration interface: attribute id
assert_own_property: self does not have own property "BackgroundFetchRegistration" expected property "BackgroundFetchRegistration" missing
[FAIL] BackgroundFetchRegistration interface: attribute uploadTotal
assert_own_property: self does not have own property "BackgroundFetchRegistration" expected property "BackgroundFetchRegistration" missing
[FAIL] BackgroundFetchRegistration interface: attribute uploaded
assert_own_property: self does not have own property "BackgroundFetchRegistration" expected property "BackgroundFetchRegistration" missing
[FAIL] BackgroundFetchRegistration interface: attribute downloadTotal
assert_own_property: self does not have own property "BackgroundFetchRegistration" expected property "BackgroundFetchRegistration" missing
[FAIL] BackgroundFetchRegistration interface: attribute downloaded
assert_own_property: self does not have own property "BackgroundFetchRegistration" expected property "BackgroundFetchRegistration" missing
[FAIL] BackgroundFetchRegistration interface: attribute result
assert_own_property: self does not have own property "BackgroundFetchRegistration" expected property "BackgroundFetchRegistration" missing
[FAIL] BackgroundFetchRegistration interface: attribute failureReason
assert_own_property: self does not have own property "BackgroundFetchRegistration" expected property "BackgroundFetchRegistration" missing
[FAIL] BackgroundFetchRegistration interface: attribute recordsAvailable
assert_own_property: self does not have own property "BackgroundFetchRegistration" expected property "BackgroundFetchRegistration" missing
[FAIL] BackgroundFetchRegistration interface: attribute onprogress
assert_own_property: self does not have own property "BackgroundFetchRegistration" expected property "BackgroundFetchRegistration" missing
[FAIL] BackgroundFetchRegistration interface: operation abort()
assert_own_property: self does not have own property "BackgroundFetchRegistration" expected property "BackgroundFetchRegistration" missing
[FAIL] BackgroundFetchRegistration interface: operation match(RequestInfo, optional CacheQueryOptions)
assert_own_property: self does not have own property "BackgroundFetchRegistration" expected property "BackgroundFetchRegistration" missing
[FAIL] BackgroundFetchRegistration interface: operation matchAll(optional RequestInfo, optional CacheQueryOptions)
assert_own_property: self does not have own property "BackgroundFetchRegistration" expected property "BackgroundFetchRegistration" missing
[FAIL] BackgroundFetchRecord interface: existence and properties of interface object
assert_own_property: self does not have own property "BackgroundFetchRecord" expected property "BackgroundFetchRecord" missing
[FAIL] BackgroundFetchRecord interface object length
assert_own_property: self does not have own property "BackgroundFetchRecord" expected property "BackgroundFetchRecord" missing
[FAIL] BackgroundFetchRecord interface object name
assert_own_property: self does not have own property "BackgroundFetchRecord" expected property "BackgroundFetchRecord" missing
[FAIL] BackgroundFetchRecord interface: existence and properties of interface prototype object
assert_own_property: self does not have own property "BackgroundFetchRecord" expected property "BackgroundFetchRecord" missing
[FAIL] BackgroundFetchRecord interface: existence and properties of interface prototype object's "constructor" property
assert_own_property: self does not have own property "BackgroundFetchRecord" expected property "BackgroundFetchRecord" missing
[FAIL] BackgroundFetchRecord interface: existence and properties of interface prototype object's @@unscopables property
assert_own_property: self does not have own property "BackgroundFetchRecord" expected property "BackgroundFetchRecord" missing
[FAIL] BackgroundFetchRecord interface: attribute request
assert_own_property: self does not have own property "BackgroundFetchRecord" expected property "BackgroundFetchRecord" missing
[FAIL] BackgroundFetchRecord interface: attribute responseReady
assert_own_property: self does not have own property "BackgroundFetchRecord" expected property "BackgroundFetchRecord" missing
[FAIL] BackgroundFetchEvent interface: existence and properties of interface object
assert_own_property: self does not have own property "BackgroundFetchEvent" expected property "BackgroundFetchEvent" missing
[FAIL] BackgroundFetchEvent interface object length
assert_own_property: self does not have own property "BackgroundFetchEvent" expected property "BackgroundFetchEvent" missing
[FAIL] BackgroundFetchEvent interface object name
assert_own_property: self does not have own property "BackgroundFetchEvent" expected property "BackgroundFetchEvent" missing
[FAIL] BackgroundFetchEvent interface: existence and properties of interface prototype object
assert_own_property: self does not have own property "BackgroundFetchEvent" expected property "BackgroundFetchEvent" missing
[FAIL] BackgroundFetchEvent interface: existence and properties of interface prototype object's "constructor" property
assert_own_property: self does not have own property "BackgroundFetchEvent" expected property "BackgroundFetchEvent" missing
[FAIL] BackgroundFetchEvent interface: existence and properties of interface prototype object's @@unscopables property
assert_own_property: self does not have own property "BackgroundFetchEvent" expected property "BackgroundFetchEvent" missing
[FAIL] BackgroundFetchEvent interface: attribute registration
assert_own_property: self does not have own property "BackgroundFetchEvent" expected property "BackgroundFetchEvent" missing
[FAIL] BackgroundFetchUpdateUIEvent interface: existence and properties of interface object
assert_own_property: self does not have own property "BackgroundFetchUpdateUIEvent" expected property "BackgroundFetchUpdateUIEvent" missing
[FAIL] BackgroundFetchUpdateUIEvent interface object length
assert_own_property: self does not have own property "BackgroundFetchUpdateUIEvent" expected property "BackgroundFetchUpdateUIEvent" missing
[FAIL] BackgroundFetchUpdateUIEvent interface object name
assert_own_property: self does not have own property "BackgroundFetchUpdateUIEvent" expected property "BackgroundFetchUpdateUIEvent" missing
[FAIL] BackgroundFetchUpdateUIEvent interface: existence and properties of interface prototype object
assert_own_property: self does not have own property "BackgroundFetchUpdateUIEvent" expected property "BackgroundFetchUpdateUIEvent" missing
[FAIL] BackgroundFetchUpdateUIEvent interface: existence and properties of interface prototype object's "constructor" property
assert_own_property: self does not have own property "BackgroundFetchUpdateUIEvent" expected property "BackgroundFetchUpdateUIEvent" missing
[FAIL] BackgroundFetchUpdateUIEvent interface: existence and properties of interface prototype object's @@unscopables property
assert_own_property: self does not have own property "BackgroundFetchUpdateUIEvent" expected property "BackgroundFetchUpdateUIEvent" missing
[FAIL] BackgroundFetchUpdateUIEvent interface: operation updateUI(optional BackgroundFetchUIOptions)
assert_own_property: self does not have own property "BackgroundFetchUpdateUIEvent" expected property "BackgroundFetchUpdateUIEvent" missing
[FAIL] ServiceWorkerRegistration interface: attribute backgroundFetch
assert_true: The prototype object must have a property "backgroundFetch" expected true got false
[FAIL] ServiceWorkerGlobalScope interface: attribute onbackgroundfetchsuccess
assert_own_property: The global object must have a property "onbackgroundfetchsuccess" expected property "onbackgroundfetchsuccess" missing
[FAIL] ServiceWorkerGlobalScope interface: attribute onbackgroundfetchfail
assert_own_property: The global object must have a property "onbackgroundfetchfail" expected property "onbackgroundfetchfail" missing
[FAIL] ServiceWorkerGlobalScope interface: attribute onbackgroundfetchabort
assert_own_property: The global object must have a property "onbackgroundfetchabort" expected property "onbackgroundfetchabort" missing
[FAIL] ServiceWorkerGlobalScope interface: attribute onbackgroundfetchclick
assert_own_property: The global object must have a property "onbackgroundfetchclick" expected property "onbackgroundfetchclick" missing
Harness: the test ran to completion.