This is a testharness.js-based test.
PASS Request has clone method
PASS Request has arrayBuffer method
PASS Request has blob method
PASS Request has formData method
PASS Request has json method
PASS Request has text method
PASS Check method attribute
PASS Check url attribute
PASS Check headers attribute
PASS Check destination attribute
PASS Check referrer attribute
PASS Check referrerPolicy attribute
PASS Check mode attribute
FAIL Check credentials attribute assert_equals: Attribute credentials is read only. Default value is same-origin expected "same-origin" but got "omit"
PASS Check cache attribute
PASS Check redirect attribute
PASS Check integrity attribute
PASS Check bodyUsed attribute
Harness: the test ran to completion.