Closed Bug 1495753 Opened 6 years ago Closed 6 years ago

Mimesniff - Between Firefox 62 and 63 we are failing an extra 514 Web Platform Tests

Categories

(Core :: XPCOM, enhancement)

Product:
Core
Component:
XPCOM
Type:
enhancement
Priority:
Not set
Severity:
normal

Tracking

()

Status:
RESOLVED DUPLICATE of bug 1423877

People

(Reporter: automatedtester, Unassigned)

References

Details

When looking at the differences between versions it was noticed that we had a huge drop in passing mimesniff tests between Firefox 62 and Firefox 63

https://wpt.fyi/results/mimesniff?label=taskcluster&product=firefox[beta]&product=firefox[stable]&aligned=true&diff=true

When I run the tests locally between those branches I get the following differences

Unexpected Results
------------------
/mimesniff/mime-types/parsing.any.worker.html
  UNEXPECTED-PASS ÿ/ÿ (Request/Response)
  UNEXPECTED-PASS /x (Request/Response)
  UNEXPECTED-PASS x/ (Request/Response)
  UNEXPECTED-PASS /x (Request/Response)
  UNEXPECTED-PASS x/ (Request/Response)
  UNEXPECTED-PASS /x (Request/Response)
  UNEXPECTED-PASS x/ (Request/Response)
  UNEXPECTED-PASS /x (Request/Response)
  UNEXPECTED-PASS x/ (Request/Response)
  UNEXPECTED-PASS /x (Request/Response)
  UNEXPECTED-PASS x/ (Request/Response)
  UNEXPECTED-PASS /x (Request/Response)
  UNEXPECTED-PASS x/ (Request/Response)
  UNEXPECTED-PASS /x (Request/Response)
  UNEXPECTED-PASS x/ (Request/Response)
  UNEXPECTED-PASS /x (Request/Response)
  UNEXPECTED-PASS x/ (Request/Response)
  UNEXPECTED-PASS /x (Request/Response)
  UNEXPECTED-PASS x/ (Request/Response)
  UNEXPECTED-PASS /x (Request/Response)
  UNEXPECTED-PASS x/ (Request/Response)
  UNEXPECTED-PASS /x (Request/Response)
  UNEXPECTED-PASS x/ (Request/Response)
  UNEXPECTED-PASS /x (Request/Response)
  UNEXPECTED-PASS x/ (Request/Response)
  UNEXPECTED-PASS /x (Request/Response)
  UNEXPECTED-PASS x/ (Request/Response)
  UNEXPECTED-PASS /x (Request/Response)
  UNEXPECTED-PASS x/ (Request/Response)
  UNEXPECTED-PASS /x (Request/Response)
  UNEXPECTED-PASS x/ (Request/Response)
  UNEXPECTED-PASS /x (Request/Response)
  UNEXPECTED-PASS x/ (Request/Response)
  UNEXPECTED-PASS /x (Request/Response)
  UNEXPECTED-PASS x/ (Request/Response)
  UNEXPECTED-PASS /x (Request/Response)
  UNEXPECTED-PASS x/ (Request/Response)
  UNEXPECTED-PASS /x (Request/Response)
  UNEXPECTED-PASS x/ (Request/Response)
  UNEXPECTED-PASS /x (Request/Response)
  UNEXPECTED-PASS x/ (Request/Response)
  UNEXPECTED-PASS /x (Request/Response)
  UNEXPECTED-PASS x/ (Request/Response)
  UNEXPECTED-PASS /x (Request/Response)
  UNEXPECTED-PASS x/ (Request/Response)
  UNEXPECTED-PASS /x (Request/Response)
  UNEXPECTED-PASS x/ (Request/Response)
  UNEXPECTED-PASS /x (Request/Response)
  UNEXPECTED-PASS x/ (Request/Response)
  UNEXPECTED-PASS /x (Request/Response)
  UNEXPECTED-PASS x/ (Request/Response)
  UNEXPECTED-PASS /x (Request/Response)
  UNEXPECTED-PASS x/ (Request/Response)
  UNEXPECTED-PASS /x (Request/Response)
  UNEXPECTED-PASS x/ (Request/Response)
  UNEXPECTED-PASS /x (Request/Response)
  UNEXPECTED-PASS x/ (Request/Response)
  UNEXPECTED-PASS /x (Request/Response)
  UNEXPECTED-PASS x/ (Request/Response)
  UNEXPECTED-PASS /x (Request/Response)
  UNEXPECTED-PASS x/ (Request/Response)
  UNEXPECTED-PASS /x (Request/Response)
  UNEXPECTED-PASS x/ (Request/Response)
  UNEXPECTED-PASS /x (Request/Response)
  UNEXPECTED-PASS x/ (Request/Response)
  UNEXPECTED-PASS  /x (Request/Response)
  UNEXPECTED-PASS x/  (Request/Response)
  UNEXPECTED-PASS ¡/x (Request/Response)
  UNEXPECTED-PASS x/¡ (Request/Response)
  UNEXPECTED-PASS ¢/x (Request/Response)
  UNEXPECTED-PASS x/¢ (Request/Response)
  UNEXPECTED-PASS £/x (Request/Response)
  UNEXPECTED-PASS x/£ (Request/Response)
  UNEXPECTED-PASS ¤/x (Request/Response)
  UNEXPECTED-PASS x/¤ (Request/Response)
  UNEXPECTED-PASS ¥/x (Request/Response)
  UNEXPECTED-PASS x/¥ (Request/Response)
  UNEXPECTED-PASS ¦/x (Request/Response)
  UNEXPECTED-PASS x/¦ (Request/Response)
  UNEXPECTED-PASS §/x (Request/Response)
  UNEXPECTED-PASS x/§ (Request/Response)
  UNEXPECTED-PASS ¨/x (Request/Response)
  UNEXPECTED-PASS x/¨ (Request/Response)
  UNEXPECTED-PASS ©/x (Request/Response)
  UNEXPECTED-PASS x/© (Request/Response)
  UNEXPECTED-PASS ª/x (Request/Response)
  UNEXPECTED-PASS x/ª (Request/Response)
  UNEXPECTED-PASS «/x (Request/Response)
  UNEXPECTED-PASS x/« (Request/Response)
  UNEXPECTED-PASS ¬/x (Request/Response)
  UNEXPECTED-PASS x/¬ (Request/Response)
  UNEXPECTED-PASS ­/x (Request/Response)
  UNEXPECTED-PASS x/­ (Request/Response)
  UNEXPECTED-PASS ®/x (Request/Response)
  UNEXPECTED-PASS x/® (Request/Response)
  UNEXPECTED-PASS ¯/x (Request/Response)
  UNEXPECTED-PASS x/¯ (Request/Response)
  UNEXPECTED-PASS °/x (Request/Response)
  UNEXPECTED-PASS x/° (Request/Response)
  UNEXPECTED-PASS ±/x (Request/Response)
  UNEXPECTED-PASS x/± (Request/Response)
  UNEXPECTED-PASS ²/x (Request/Response)
  UNEXPECTED-PASS x/² (Request/Response)
  UNEXPECTED-PASS ³/x (Request/Response)
  UNEXPECTED-PASS x/³ (Request/Response)
  UNEXPECTED-PASS ´/x (Request/Response)
  UNEXPECTED-PASS x/´ (Request/Response)
  UNEXPECTED-PASS µ/x (Request/Response)
  UNEXPECTED-PASS x/µ (Request/Response)
  UNEXPECTED-PASS ¶/x (Request/Response)
  UNEXPECTED-PASS x/¶ (Request/Response)
  UNEXPECTED-PASS ·/x (Request/Response)
  UNEXPECTED-PASS x/· (Request/Response)
  UNEXPECTED-PASS ¸/x (Request/Response)
  UNEXPECTED-PASS x/¸ (Request/Response)
  UNEXPECTED-PASS ¹/x (Request/Response)
  UNEXPECTED-PASS x/¹ (Request/Response)
  UNEXPECTED-PASS º/x (Request/Response)
  UNEXPECTED-PASS x/º (Request/Response)
  UNEXPECTED-PASS »/x (Request/Response)
  UNEXPECTED-PASS x/» (Request/Response)
  UNEXPECTED-PASS ¼/x (Request/Response)
  UNEXPECTED-PASS x/¼ (Request/Response)
  UNEXPECTED-PASS ½/x (Request/Response)
  UNEXPECTED-PASS x/½ (Request/Response)
  UNEXPECTED-PASS ¾/x (Request/Response)
  UNEXPECTED-PASS x/¾ (Request/Response)
  UNEXPECTED-PASS ¿/x (Request/Response)
  UNEXPECTED-PASS x/¿ (Request/Response)
  UNEXPECTED-PASS À/x (Request/Response)
  UNEXPECTED-PASS x/À (Request/Response)
  UNEXPECTED-PASS Á/x (Request/Response)
  UNEXPECTED-PASS x/Á (Request/Response)
  UNEXPECTED-PASS Â/x (Request/Response)
  UNEXPECTED-PASS x/Â (Request/Response)
  UNEXPECTED-PASS Ã/x (Request/Response)
  UNEXPECTED-PASS x/Ã (Request/Response)
  UNEXPECTED-PASS Ä/x (Request/Response)
  UNEXPECTED-PASS x/Ä (Request/Response)
  UNEXPECTED-PASS Å/x (Request/Response)
  UNEXPECTED-PASS x/Å (Request/Response)
  UNEXPECTED-PASS Æ/x (Request/Response)
  UNEXPECTED-PASS x/Æ (Request/Response)
  UNEXPECTED-PASS Ç/x (Request/Response)
  UNEXPECTED-PASS x/Ç (Request/Response)
  UNEXPECTED-PASS È/x (Request/Response)
  UNEXPECTED-PASS x/È (Request/Response)
  UNEXPECTED-PASS É/x (Request/Response)
  UNEXPECTED-PASS x/É (Request/Response)
  UNEXPECTED-PASS Ê/x (Request/Response)
  UNEXPECTED-PASS x/Ê (Request/Response)
  UNEXPECTED-PASS Ë/x (Request/Response)
  UNEXPECTED-PASS x/Ë (Request/Response)
  UNEXPECTED-PASS Ì/x (Request/Response)
  UNEXPECTED-PASS x/Ì (Request/Response)
  UNEXPECTED-PASS Í/x (Request/Response)
  UNEXPECTED-PASS x/Í (Request/Response)
  UNEXPECTED-PASS Î/x (Request/Response)
  UNEXPECTED-PASS x/Î (Request/Response)
  UNEXPECTED-PASS Ï/x (Request/Response)
  UNEXPECTED-PASS x/Ï (Request/Response)
  UNEXPECTED-PASS Ð/x (Request/Response)
  UNEXPECTED-PASS x/Ð (Request/Response)
  UNEXPECTED-PASS Ñ/x (Request/Response)
  UNEXPECTED-PASS x/Ñ (Request/Response)
  UNEXPECTED-PASS Ò/x (Request/Response)
  UNEXPECTED-PASS x/Ò (Request/Response)
  UNEXPECTED-PASS Ó/x (Request/Response)
  UNEXPECTED-PASS x/Ó (Request/Response)
  UNEXPECTED-PASS Ô/x (Request/Response)
  UNEXPECTED-PASS x/Ô (Request/Response)
  UNEXPECTED-PASS Õ/x (Request/Response)
  UNEXPECTED-PASS x/Õ (Request/Response)
  UNEXPECTED-PASS Ö/x (Request/Response)
  UNEXPECTED-PASS x/Ö (Request/Response)
  UNEXPECTED-PASS ×/x (Request/Response)
  UNEXPECTED-PASS x/× (Request/Response)
  UNEXPECTED-PASS Ø/x (Request/Response)
  UNEXPECTED-PASS x/Ø (Request/Response)
  UNEXPECTED-PASS Ù/x (Request/Response)
  UNEXPECTED-PASS x/Ù (Request/Response)
  UNEXPECTED-PASS Ú/x (Request/Response)
  UNEXPECTED-PASS x/Ú (Request/Response)
  UNEXPECTED-PASS Û/x (Request/Response)
  UNEXPECTED-PASS x/Û (Request/Response)
  UNEXPECTED-PASS Ü/x (Request/Response)
  UNEXPECTED-PASS x/Ü (Request/Response)
  UNEXPECTED-PASS Ý/x (Request/Response)
  UNEXPECTED-PASS x/Ý (Request/Response)
  UNEXPECTED-PASS Þ/x (Request/Response)
  UNEXPECTED-PASS x/Þ (Request/Response)
  UNEXPECTED-PASS ß/x (Request/Response)
  UNEXPECTED-PASS x/ß (Request/Response)
  UNEXPECTED-PASS à/x (Request/Response)
  UNEXPECTED-PASS x/à (Request/Response)
  UNEXPECTED-PASS á/x (Request/Response)
  UNEXPECTED-PASS x/á (Request/Response)
  UNEXPECTED-PASS â/x (Request/Response)
  UNEXPECTED-PASS x/â (Request/Response)
  UNEXPECTED-PASS ã/x (Request/Response)
  UNEXPECTED-PASS x/ã (Request/Response)
  UNEXPECTED-PASS ä/x (Request/Response)
  UNEXPECTED-PASS x/ä (Request/Response)
  UNEXPECTED-PASS å/x (Request/Response)
  UNEXPECTED-PASS x/å (Request/Response)
  UNEXPECTED-PASS æ/x (Request/Response)
  UNEXPECTED-PASS x/æ (Request/Response)
  UNEXPECTED-PASS ç/x (Request/Response)
  UNEXPECTED-PASS x/ç (Request/Response)
  UNEXPECTED-PASS è/x (Request/Response)
  UNEXPECTED-PASS x/è (Request/Response)
  UNEXPECTED-PASS é/x (Request/Response)
  UNEXPECTED-PASS x/é (Request/Response)
  UNEXPECTED-PASS ê/x (Request/Response)
  UNEXPECTED-PASS x/ê (Request/Response)
  UNEXPECTED-PASS ë/x (Request/Response)
  UNEXPECTED-PASS x/ë (Request/Response)
  UNEXPECTED-PASS ì/x (Request/Response)
  UNEXPECTED-PASS x/ì (Request/Response)
  UNEXPECTED-PASS í/x (Request/Response)
  UNEXPECTED-PASS x/í (Request/Response)
  UNEXPECTED-PASS î/x (Request/Response)
  UNEXPECTED-PASS x/î (Request/Response)
  UNEXPECTED-PASS ï/x (Request/Response)
  UNEXPECTED-PASS x/ï (Request/Response)
  UNEXPECTED-PASS ð/x (Request/Response)
  UNEXPECTED-PASS x/ð (Request/Response)
  UNEXPECTED-PASS ñ/x (Request/Response)
  UNEXPECTED-PASS x/ñ (Request/Response)
  UNEXPECTED-PASS ò/x (Request/Response)
  UNEXPECTED-PASS x/ò (Request/Response)
  UNEXPECTED-PASS ó/x (Request/Response)
  UNEXPECTED-PASS x/ó (Request/Response)
  UNEXPECTED-PASS ô/x (Request/Response)
  UNEXPECTED-PASS x/ô (Request/Response)
  UNEXPECTED-PASS õ/x (Request/Response)
  UNEXPECTED-PASS x/õ (Request/Response)
  UNEXPECTED-PASS ö/x (Request/Response)
  UNEXPECTED-PASS x/ö (Request/Response)
  UNEXPECTED-PASS ÷/x (Request/Response)
  UNEXPECTED-PASS x/÷ (Request/Response)
  UNEXPECTED-PASS ø/x (Request/Response)
  UNEXPECTED-PASS x/ø (Request/Response)
  UNEXPECTED-PASS ù/x (Request/Response)
  UNEXPECTED-PASS x/ù (Request/Response)
  UNEXPECTED-PASS ú/x (Request/Response)
  UNEXPECTED-PASS x/ú (Request/Response)
  UNEXPECTED-PASS û/x (Request/Response)
  UNEXPECTED-PASS x/û (Request/Response)
  UNEXPECTED-PASS ü/x (Request/Response)
  UNEXPECTED-PASS x/ü (Request/Response)
  UNEXPECTED-PASS ý/x (Request/Response)
  UNEXPECTED-PASS x/ý (Request/Response)
  UNEXPECTED-PASS þ/x (Request/Response)
  UNEXPECTED-PASS x/þ (Request/Response)
  UNEXPECTED-PASS ÿ/x (Request/Response)
  UNEXPECTED-PASS x/ÿ (Request/Response)
/mimesniff/mime-types/parsing.any.html
  UNEXPECTED-PASS ÿ/ÿ (Request/Response)
  UNEXPECTED-PASS /x (Request/Response)
  UNEXPECTED-PASS x/ (Request/Response)
  UNEXPECTED-PASS /x (Request/Response)
  UNEXPECTED-PASS x/ (Request/Response)
  UNEXPECTED-PASS /x (Request/Response)
  UNEXPECTED-PASS x/ (Request/Response)
  UNEXPECTED-PASS /x (Request/Response)
  UNEXPECTED-PASS x/ (Request/Response)
  UNEXPECTED-PASS /x (Request/Response)
  UNEXPECTED-PASS x/ (Request/Response)
  UNEXPECTED-PASS /x (Request/Response)
  UNEXPECTED-PASS x/ (Request/Response)
  UNEXPECTED-PASS /x (Request/Response)
  UNEXPECTED-PASS x/ (Request/Response)
  UNEXPECTED-PASS /x (Request/Response)
  UNEXPECTED-PASS x/ (Request/Response)
  UNEXPECTED-PASS /x (Request/Response)
  UNEXPECTED-PASS x/ (Request/Response)
  UNEXPECTED-PASS /x (Request/Response)
  UNEXPECTED-PASS x/ (Request/Response)
  UNEXPECTED-PASS /x (Request/Response)
  UNEXPECTED-PASS x/ (Request/Response)
  UNEXPECTED-PASS /x (Request/Response)
  UNEXPECTED-PASS x/ (Request/Response)
  UNEXPECTED-PASS /x (Request/Response)
  UNEXPECTED-PASS x/ (Request/Response)
  UNEXPECTED-PASS /x (Request/Response)
  UNEXPECTED-PASS x/ (Request/Response)
  UNEXPECTED-PASS /x (Request/Response)
  UNEXPECTED-PASS x/ (Request/Response)
  UNEXPECTED-PASS /x (Request/Response)
  UNEXPECTED-PASS x/ (Request/Response)
  UNEXPECTED-PASS /x (Request/Response)
  UNEXPECTED-PASS x/ (Request/Response)
  UNEXPECTED-PASS /x (Request/Response)
  UNEXPECTED-PASS x/ (Request/Response)
  UNEXPECTED-PASS /x (Request/Response)
  UNEXPECTED-PASS x/ (Request/Response)
  UNEXPECTED-PASS /x (Request/Response)
  UNEXPECTED-PASS x/ (Request/Response)
  UNEXPECTED-PASS /x (Request/Response)
  UNEXPECTED-PASS x/ (Request/Response)
  UNEXPECTED-PASS /x (Request/Response)
  UNEXPECTED-PASS x/ (Request/Response)
  UNEXPECTED-PASS /x (Request/Response)
  UNEXPECTED-PASS x/ (Request/Response)
  UNEXPECTED-PASS /x (Request/Response)
  UNEXPECTED-PASS x/ (Request/Response)
  UNEXPECTED-PASS /x (Request/Response)
  UNEXPECTED-PASS x/ (Request/Response)
  UNEXPECTED-PASS /x (Request/Response)
  UNEXPECTED-PASS x/ (Request/Response)
  UNEXPECTED-PASS /x (Request/Response)
  UNEXPECTED-PASS x/ (Request/Response)
  UNEXPECTED-PASS /x (Request/Response)
  UNEXPECTED-PASS x/ (Request/Response)
  UNEXPECTED-PASS /x (Request/Response)
  UNEXPECTED-PASS x/ (Request/Response)
  UNEXPECTED-PASS /x (Request/Response)
  UNEXPECTED-PASS x/ (Request/Response)
  UNEXPECTED-PASS /x (Request/Response)
  UNEXPECTED-PASS x/ (Request/Response)
  UNEXPECTED-PASS /x (Request/Response)
  UNEXPECTED-PASS x/ (Request/Response)
  UNEXPECTED-PASS  /x (Request/Response)
  UNEXPECTED-PASS x/  (Request/Response)
  UNEXPECTED-PASS ¡/x (Request/Response)
  UNEXPECTED-PASS x/¡ (Request/Response)
  UNEXPECTED-PASS ¢/x (Request/Response)
  UNEXPECTED-PASS x/¢ (Request/Response)
  UNEXPECTED-PASS £/x (Request/Response)
  UNEXPECTED-PASS x/£ (Request/Response)
  UNEXPECTED-PASS ¤/x (Request/Response)
  UNEXPECTED-PASS x/¤ (Request/Response)
  UNEXPECTED-PASS ¥/x (Request/Response)
  UNEXPECTED-PASS x/¥ (Request/Response)
  UNEXPECTED-PASS ¦/x (Request/Response)
  UNEXPECTED-PASS x/¦ (Request/Response)
  UNEXPECTED-PASS §/x (Request/Response)
  UNEXPECTED-PASS x/§ (Request/Response)
  UNEXPECTED-PASS ¨/x (Request/Response)
  UNEXPECTED-PASS x/¨ (Request/Response)
  UNEXPECTED-PASS ©/x (Request/Response)
  UNEXPECTED-PASS x/© (Request/Response)
  UNEXPECTED-PASS ª/x (Request/Response)
  UNEXPECTED-PASS x/ª (Request/Response)
  UNEXPECTED-PASS «/x (Request/Response)
  UNEXPECTED-PASS x/« (Request/Response)
  UNEXPECTED-PASS ¬/x (Request/Response)
  UNEXPECTED-PASS x/¬ (Request/Response)
  UNEXPECTED-PASS ­/x (Request/Response)
  UNEXPECTED-PASS x/­ (Request/Response)
  UNEXPECTED-PASS ®/x (Request/Response)
  UNEXPECTED-PASS x/® (Request/Response)
  UNEXPECTED-PASS ¯/x (Request/Response)
  UNEXPECTED-PASS x/¯ (Request/Response)
  UNEXPECTED-PASS °/x (Request/Response)
  UNEXPECTED-PASS x/° (Request/Response)
  UNEXPECTED-PASS ±/x (Request/Response)
  UNEXPECTED-PASS x/± (Request/Response)
  UNEXPECTED-PASS ²/x (Request/Response)
  UNEXPECTED-PASS x/² (Request/Response)
  UNEXPECTED-PASS ³/x (Request/Response)
  UNEXPECTED-PASS x/³ (Request/Response)
  UNEXPECTED-PASS ´/x (Request/Response)
  UNEXPECTED-PASS x/´ (Request/Response)
  UNEXPECTED-PASS µ/x (Request/Response)
  UNEXPECTED-PASS x/µ (Request/Response)
  UNEXPECTED-PASS ¶/x (Request/Response)
  UNEXPECTED-PASS x/¶ (Request/Response)
  UNEXPECTED-PASS ·/x (Request/Response)
  UNEXPECTED-PASS x/· (Request/Response)
  UNEXPECTED-PASS ¸/x (Request/Response)
  UNEXPECTED-PASS x/¸ (Request/Response)
  UNEXPECTED-PASS ¹/x (Request/Response)
  UNEXPECTED-PASS x/¹ (Request/Response)
  UNEXPECTED-PASS º/x (Request/Response)
  UNEXPECTED-PASS x/º (Request/Response)
  UNEXPECTED-PASS »/x (Request/Response)
  UNEXPECTED-PASS x/» (Request/Response)
  UNEXPECTED-PASS ¼/x (Request/Response)
  UNEXPECTED-PASS x/¼ (Request/Response)
  UNEXPECTED-PASS ½/x (Request/Response)
  UNEXPECTED-PASS x/½ (Request/Response)
  UNEXPECTED-PASS ¾/x (Request/Response)
  UNEXPECTED-PASS x/¾ (Request/Response)
  UNEXPECTED-PASS ¿/x (Request/Response)
  UNEXPECTED-PASS x/¿ (Request/Response)
  UNEXPECTED-PASS À/x (Request/Response)
  UNEXPECTED-PASS x/À (Request/Response)
  UNEXPECTED-PASS Á/x (Request/Response)
  UNEXPECTED-PASS x/Á (Request/Response)
  UNEXPECTED-PASS Â/x (Request/Response)
  UNEXPECTED-PASS x/Â (Request/Response)
  UNEXPECTED-PASS Ã/x (Request/Response)
  UNEXPECTED-PASS x/Ã (Request/Response)
  UNEXPECTED-PASS Ä/x (Request/Response)
  UNEXPECTED-PASS x/Ä (Request/Response)
  UNEXPECTED-PASS Å/x (Request/Response)
  UNEXPECTED-PASS x/Å (Request/Response)
  UNEXPECTED-PASS Æ/x (Request/Response)
  UNEXPECTED-PASS x/Æ (Request/Response)
  UNEXPECTED-PASS Ç/x (Request/Response)
  UNEXPECTED-PASS x/Ç (Request/Response)
  UNEXPECTED-PASS È/x (Request/Response)
  UNEXPECTED-PASS x/È (Request/Response)
  UNEXPECTED-PASS É/x (Request/Response)
  UNEXPECTED-PASS x/É (Request/Response)
  UNEXPECTED-PASS Ê/x (Request/Response)
  UNEXPECTED-PASS x/Ê (Request/Response)
  UNEXPECTED-PASS Ë/x (Request/Response)
  UNEXPECTED-PASS x/Ë (Request/Response)
  UNEXPECTED-PASS Ì/x (Request/Response)
  UNEXPECTED-PASS x/Ì (Request/Response)
  UNEXPECTED-PASS Í/x (Request/Response)
  UNEXPECTED-PASS x/Í (Request/Response)
  UNEXPECTED-PASS Î/x (Request/Response)
  UNEXPECTED-PASS x/Î (Request/Response)
  UNEXPECTED-PASS Ï/x (Request/Response)
  UNEXPECTED-PASS x/Ï (Request/Response)
  UNEXPECTED-PASS Ð/x (Request/Response)
  UNEXPECTED-PASS x/Ð (Request/Response)
  UNEXPECTED-PASS Ñ/x (Request/Response)
  UNEXPECTED-PASS x/Ñ (Request/Response)
  UNEXPECTED-PASS Ò/x (Request/Response)
  UNEXPECTED-PASS x/Ò (Request/Response)
  UNEXPECTED-PASS Ó/x (Request/Response)
  UNEXPECTED-PASS x/Ó (Request/Response)
  UNEXPECTED-PASS Ô/x (Request/Response)
  UNEXPECTED-PASS x/Ô (Request/Response)
  UNEXPECTED-PASS Õ/x (Request/Response)
  UNEXPECTED-PASS x/Õ (Request/Response)
  UNEXPECTED-PASS Ö/x (Request/Response)
  UNEXPECTED-PASS x/Ö (Request/Response)
  UNEXPECTED-PASS ×/x (Request/Response)
  UNEXPECTED-PASS x/× (Request/Response)
  UNEXPECTED-PASS Ø/x (Request/Response)
  UNEXPECTED-PASS x/Ø (Request/Response)
  UNEXPECTED-PASS Ù/x (Request/Response)
  UNEXPECTED-PASS x/Ù (Request/Response)
  UNEXPECTED-PASS Ú/x (Request/Response)
  UNEXPECTED-PASS x/Ú (Request/Response)
  UNEXPECTED-PASS Û/x (Request/Response)
  UNEXPECTED-PASS x/Û (Request/Response)
  UNEXPECTED-PASS Ü/x (Request/Response)
  UNEXPECTED-PASS x/Ü (Request/Response)
  UNEXPECTED-PASS Ý/x (Request/Response)
  UNEXPECTED-PASS x/Ý (Request/Response)
  UNEXPECTED-PASS Þ/x (Request/Response)
  UNEXPECTED-PASS x/Þ (Request/Response)
  UNEXPECTED-PASS ß/x (Request/Response)
  UNEXPECTED-PASS x/ß (Request/Response)
  UNEXPECTED-PASS à/x (Request/Response)
  UNEXPECTED-PASS x/à (Request/Response)
  UNEXPECTED-PASS á/x (Request/Response)
  UNEXPECTED-PASS x/á (Request/Response)
  UNEXPECTED-PASS â/x (Request/Response)
  UNEXPECTED-PASS x/â (Request/Response)
  UNEXPECTED-PASS ã/x (Request/Response)
  UNEXPECTED-PASS x/ã (Request/Response)
  UNEXPECTED-PASS ä/x (Request/Response)
  UNEXPECTED-PASS x/ä (Request/Response)
  UNEXPECTED-PASS å/x (Request/Response)
  UNEXPECTED-PASS x/å (Request/Response)
  UNEXPECTED-PASS æ/x (Request/Response)
  UNEXPECTED-PASS x/æ (Request/Response)
  UNEXPECTED-PASS ç/x (Request/Response)
  UNEXPECTED-PASS x/ç (Request/Response)
  UNEXPECTED-PASS è/x (Request/Response)
  UNEXPECTED-PASS x/è (Request/Response)
  UNEXPECTED-PASS é/x (Request/Response)
  UNEXPECTED-PASS x/é (Request/Response)
  UNEXPECTED-PASS ê/x (Request/Response)
  UNEXPECTED-PASS x/ê (Request/Response)
  UNEXPECTED-PASS ë/x (Request/Response)
  UNEXPECTED-PASS x/ë (Request/Response)
  UNEXPECTED-PASS ì/x (Request/Response)
  UNEXPECTED-PASS x/ì (Request/Response)
  UNEXPECTED-PASS í/x (Request/Response)
  UNEXPECTED-PASS x/í (Request/Response)
  UNEXPECTED-PASS î/x (Request/Response)
  UNEXPECTED-PASS x/î (Request/Response)
  UNEXPECTED-PASS ï/x (Request/Response)
  UNEXPECTED-PASS x/ï (Request/Response)
  UNEXPECTED-PASS ð/x (Request/Response)
  UNEXPECTED-PASS x/ð (Request/Response)
  UNEXPECTED-PASS ñ/x (Request/Response)
  UNEXPECTED-PASS x/ñ (Request/Response)
  UNEXPECTED-PASS ò/x (Request/Response)
  UNEXPECTED-PASS x/ò (Request/Response)
  UNEXPECTED-PASS ó/x (Request/Response)
  UNEXPECTED-PASS x/ó (Request/Response)
  UNEXPECTED-PASS ô/x (Request/Response)
  UNEXPECTED-PASS x/ô (Request/Response)
  UNEXPECTED-PASS õ/x (Request/Response)
  UNEXPECTED-PASS x/õ (Request/Response)
  UNEXPECTED-PASS ö/x (Request/Response)
  UNEXPECTED-PASS x/ö (Request/Response)
  UNEXPECTED-PASS ÷/x (Request/Response)
  UNEXPECTED-PASS x/÷ (Request/Response)
  UNEXPECTED-PASS ø/x (Request/Response)
  UNEXPECTED-PASS x/ø (Request/Response)
  UNEXPECTED-PASS ù/x (Request/Response)
  UNEXPECTED-PASS x/ù (Request/Response)
  UNEXPECTED-PASS ú/x (Request/Response)
  UNEXPECTED-PASS x/ú (Request/Response)
  UNEXPECTED-PASS û/x (Request/Response)
  UNEXPECTED-PASS x/û (Request/Response)
  UNEXPECTED-PASS ü/x (Request/Response)
  UNEXPECTED-PASS x/ü (Request/Response)
  UNEXPECTED-PASS ý/x (Request/Response)
  UNEXPECTED-PASS x/ý (Request/Response)
  UNEXPECTED-PASS þ/x (Request/Response)
  UNEXPECTED-PASS x/þ (Request/Response)
  UNEXPECTED-PASS ÿ/x (Request/Response)
  UNEXPECTED-PASS x/ÿ (Request/Response)
Just for clarification, it appears that between 62 and 63 these tests were set to be expected fail.
It would appear these tests were disabled in https://bugzilla.mozilla.org/show_bug.cgi?id=1402247
Depends on: 1402247
In Comment 2 it should have said the tests were moved to expected fail.
Component: Networking → String
Henri/Anne

Is this desired behaviour? If not and do we have a follow up bug to reenable/update the tests?

Chrome score for this area if 1432 / 3794 if that matters (https://wpt.fyi/results/mimesniff?label=taskcluster&product=chrome[beta]&product=chrome[stable]&aligned=true&diff=true)

Our score is 806 / 3794 down from 1320 / 3794(https://wpt.fyi/results/mimesniff?label=taskcluster&product=firefox[beta]&product=firefox[stable]&aligned=true&diff=true)
Flags: needinfo?(hsivonen)
Flags: needinfo?(annevk)
Previously, these tests passed but for a completely wrong reason (they passed because UTF-8 errors resulted in string truncation). Bug 1402247 removed the bogus reason, so these started failing. This was deemed acceptable in bug 1423877 comment 5.

Bug 1423877 is the follow-up bug. That bug has become more realistic to fix now that we've gained dom/base/MimeType.h.
Flags: needinfo?(hsivonen)
Henri,

Should we dupe this bug to Bug 1423877 then?
Flags: needinfo?(hsivonen)
(In reply to David Burns :automatedtester from comment #6)
> Henri,
> 
> Should we dupe this bug to Bug 1423877 then?

Let's do that.
Status: NEW → RESOLVED
Closed: 6 years ago
Flags: needinfo?(hsivonen)
Flags: needinfo?(annevk)
Resolution: --- → DUPLICATE
Component: String → XPCOM
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