This is a testharness.js-based test.
Harness Error. harness_status.status = 1 , harness_status.message = 2 duplicate test names: "fontFeatureSettings of '@font-face { font-feature-settings: 'smcp' 1; }' should be ''smcp' 1'", "webkitFontFeatureSettings of '@font-face { font-feature-settings: 'smcp' 1; }' should be ''smcp' 1'"
PASS 'fontFeatureSettings' in style 
PASS 'webkitFontFeatureSettings' in style 
PASS fontFeatureSettings of '@font-face { font-feature-settings: 'smcp' 1; }' should be ''smcp' 1' 
PASS webkitFontFeatureSettings of '@font-face { font-feature-settings: 'smcp' 1; }' should be ''smcp' 1' 
PASS fontFeatureSettings of '@font-face { font-feature-settings: 'smcp' 1; }' should be ''smcp' 1' 
PASS webkitFontFeatureSettings of '@font-face { font-feature-settings: 'smcp' 1; }' should be ''smcp' 1' 
PASS fontFeatureSettings of 'font-feature-settings:'smcp' 1' should be ''smcp' 1' 
PASS webkitFontFeatureSettings of 'font-feature-settings:'smcp' 1' should be ''smcp' 1' 
PASS fontFeatureSettings of '-webkit-font-feature-settings:'smcp' 1' should be ''smcp' 1' 
PASS webkitFontFeatureSettings of '-webkit-font-feature-settings:'smcp' 1' should be ''smcp' 1' 
Harness: the test ran to completion.