This is a testharness.js-based test.
[FAIL] InterventionReportBody interface: existence and properties of interface object
assert_own_property: self does not have own property "InterventionReportBody" expected property "InterventionReportBody" missing
[FAIL] InterventionReportBody interface object length
assert_own_property: self does not have own property "InterventionReportBody" expected property "InterventionReportBody" missing
[FAIL] InterventionReportBody interface object name
assert_own_property: self does not have own property "InterventionReportBody" expected property "InterventionReportBody" missing
[FAIL] InterventionReportBody interface: existence and properties of interface prototype object
assert_own_property: self does not have own property "InterventionReportBody" expected property "InterventionReportBody" missing
[FAIL] InterventionReportBody interface: existence and properties of interface prototype object's "constructor" property
assert_own_property: self does not have own property "InterventionReportBody" expected property "InterventionReportBody" missing
[FAIL] InterventionReportBody interface: existence and properties of interface prototype object's @@unscopables property
assert_own_property: self does not have own property "InterventionReportBody" expected property "InterventionReportBody" missing
[FAIL] InterventionReportBody interface: operation toJSON()
assert_own_property: self does not have own property "InterventionReportBody" expected property "InterventionReportBody" missing
[FAIL] InterventionReportBody interface: attribute id
assert_own_property: self does not have own property "InterventionReportBody" expected property "InterventionReportBody" missing
[FAIL] InterventionReportBody interface: attribute message
assert_own_property: self does not have own property "InterventionReportBody" expected property "InterventionReportBody" missing
[FAIL] InterventionReportBody interface: attribute sourceFile
assert_own_property: self does not have own property "InterventionReportBody" expected property "InterventionReportBody" missing
[FAIL] InterventionReportBody interface: attribute lineNumber
assert_own_property: self does not have own property "InterventionReportBody" expected property "InterventionReportBody" missing
[FAIL] InterventionReportBody interface: attribute columnNumber
assert_own_property: self does not have own property "InterventionReportBody" expected property "InterventionReportBody" missing
Harness: the test ran to completion.