Bug 1382925 - Part 4: Test origin iteration order by checking font-fa…

…ce rule cascade. r=emilio

MozReview-Commit-ID: 7UzDKkKOEtw

UltraBlame original commit: fb2e833fe98deb0f1aeaf3d3b0b8ade309eb5c8e

layout/style/test/mochitest.ini

@@ -1122,6 +1122,11 @@ test_flexbox_reflow_counts
 html
 ]
 [
+test_font_face_cascade
+.
+html
+]
+[
 test_font_face_parser
 .
 html

layout/style/test/test_font_face_cascade.html

@@ -0,0 +1,346 @@
+<
+!
+DOCTYPE
+HTML
+>
+<
+title
+>
+Test
+that
+font
+-
+face
+rules
+from
+different
+origins
+cascade
+correctly
+<
+/
+title
+>
+<
+script
+src
+=
+"
+/
+tests
+/
+SimpleTest
+/
+SimpleTest
+.
+js
+"
+>
+<
+/
+script
+>
+<
+link
+rel
+=
+"
+stylesheet
+"
+type
+=
+"
+text
+/
+css
+"
+href
+=
+"
+/
+tests
+/
+SimpleTest
+/
+test
+.
+css
+"
+>
+<
+script
+>
+let
+io
+=
+SpecialPowers
+.
+Cc
+[
+"
+mozilla
+.
+org
+/
+network
+/
+io
+-
+service
+;
+1
+"
+]
+.
+getService
+(
+SpecialPowers
+.
+Ci
+.
+nsIIOService
+)
+;
+let
+utils
+=
+SpecialPowers
+.
+wrap
+(
+window
+)
+.
+QueryInterface
+(
+SpecialPowers
+.
+Ci
+.
+nsIInterfaceRequestor
+)
+.
+getInterface
+(
+SpecialPowers
+.
+Ci
+.
+nsIDOMWindowUtils
+)
+;
+function
+load_sheet
+(
+sheet_text
+level
+)
+{
+if
+(
+level
+!
+=
+"
+AGENT_SHEET
+"
+&
+&
+level
+!
+=
+"
+USER_SHEET
+"
+&
+&
+level
+!
+=
+"
+AUTHOR_SHEET
+"
+)
+{
+throw
+"
+unknown
+level
+"
+;
+}
+let
+uri
+=
+io
+.
+newURI
+(
+"
+data
+:
+text
+/
+css
+"
++
+encodeURI
+(
+sheet_text
+)
+)
+;
+utils
+.
+loadSheet
+(
+uri
+utils
+[
+level
+]
+)
+;
+}
+load_sheet
+(
+"
+font
+-
+face
+{
+font
+-
+family
+:
+TestAgent
+;
+src
+:
+url
+(
+about
+:
+invalid
+)
+;
+}
+"
+"
+AGENT_SHEET
+"
+)
+;
+load_sheet
+(
+"
+font
+-
+face
+{
+font
+-
+family
+:
+TestAuthor
+;
+src
+:
+url
+(
+about
+:
+invalid
+)
+;
+}
+"
+"
+AUTHOR_SHEET
+"
+)
+;
+load_sheet
+(
+"
+font
+-
+face
+{
+font
+-
+family
+:
+TestUser
+;
+src
+:
+url
+(
+about
+:
+invalid
+)
+;
+}
+"
+"
+USER_SHEET
+"
+)
+;
+is
+(
+[
+.
+.
+.
+document
+.
+fonts
+]
+.
+map
+(
+f
+=
+>
+f
+.
+family
+)
+.
+join
+(
+"
+"
+)
+'
+"
+TestAuthor
+"
+"
+TestUser
+"
+"
+TestAgent
+"
+'
+"
+font
+-
+face
+rules
+are
+returned
+in
+correct
+cascade
+order
+"
+)
+;
+<
+/
+script
+>