Test parsing the src descriptor of @font-face.

Valid rules form the stylesheet:

Expected result for valid rules:

@font-face { src: url(font.ttf); }
@font-face { src: url(http://foo/bar/font.ttf); }
@font-face { src: url(font.svg#id); }
@font-face { src: url(font.ttf) format(truetype); }
@font-face { src: url(font.woff) format(woff), local(font2); }
@font-face { src: url(font2.ttf); }
@font-face { src: url(font2.ttf) format(truetype); }
@font-face { src: url(font3.otf) format(opentype), local(foo bar); }
@font-face { src: local(foo); }
@font-face { src: local(font), local(foo bar); }
@font-face { src: local(foo); }
@font-face { src: local(foo bar); }

Invalid rules form the stylesheet:



Expected result for invalid rules:

@font-face { }
@font-face { }
@font-face { }
@font-face { }
@font-face { }
@font-face { }
@font-face { }
@font-face { }