Bug 1166147 - Part4: Add a reftest for this bug. r?dholbert
MozReview-Commit-ID: JsVhk5eoDgT
new file mode 100644
--- /dev/null
+++ b/layout/reftests/printing/1166147-ref.html
@@ -0,0 +1,35 @@
+<!DOCTYPE html>
+<!--
+This test passes if the pages generated are identical for both vertical-lr and
+horizontal-tb writing-modes by means of making the size of the content we are
+printing equal to exactly the same number of pages being generated in each
+writing mode.
+This sizing is calculated like so:
+
+1. It is important to note that irrespective of the writing-mode, the print
+ UI always lays out printed pages vertically. Therefore, it is possible
+ to equate the printed content of two different writing modes if both
+ cases generate the exact same number of pages (and of course no text on
+ the pages, which is why we use background color since it is independent
+ of writing mode).
+2. To avoid an unnecessary vertical scrollbar (since scrolled content will be
+ clipped anyway in the reftest snapshot), the maximum number of 5X3in pages
+ that we should generate for the reftest snapshot are equal to 3.
+3. Considering a margin of 0.5in on each side of the 5X3in page, we get the
+ size of the page content area to be 4X2in per page and to generate exactly 3
+ printed pages from this in horizontal-tb writing mode, we need a printable
+ area of 4X6in (as used below).
+
+Similarly, the size for the test case printable area is calculated, only
+considering a vertical-rl writing mode.
+
+It is important to note here that when printing this test outside of the test
+harness, the background color will not show since we omit printing and
+previewing of background colors by default via the browser printing path.
+-->
+<html class="reftest-print">
+ <body style="margin:0;">
+ <div style="background: teal; width:4in; height:6in;">
+ </div>
+ </body>
+</html>
\ No newline at end of file
new file mode 100644
--- /dev/null
+++ b/layout/reftests/printing/1166147.html
@@ -0,0 +1,36 @@
+<!DOCTYPE html>
+<!--
+This test checks if content is paginated correctly in the horizontal
+direction when printing. The test passes if the pages generated
+are identical for both vertical-lr and horizontal-tb writing-modes by means of
+making the size of the content we are printing equal to exactly the same number
+of pages being generated in each writing mode.
+This sizing is calculated like so:
+
+1. It is important to note that irrespective of the writing-mode, the print
+ UI always lays out printed pages vertically. Therefore, it is possible
+ to equate the printed content of two different writing modes if both
+ cases generate the exact same number of pages (and of course no text on
+ the pages, which is why we use background color since it is independent
+ of writing mode).
+2. To avoid an unnecessary vertical scrollbar (since scrolled content will be
+ clipped anyway in the reftest snapshot), the maximum number of 5X3in pages
+ that we should generate for the reftest snapshot are equal to 3.
+3. Considering a margin of 0.5in on each side of the 5X3in page, we get the
+ size of the page content area to be 4X2in per page and to generate exactly 3
+ printed pages from this in the vertical-rl writing mode, we need a printable
+ area of 12X2in (as used below).
+
+Similarly, the size for the reference printable area is calculated, only
+considering a horizontal-tb writing mode.
+
+It is important to note here that when printing this test outside of the test
+harness, the background color will not show since we omit printing and
+previewing of background colors by default via the browser printing path.
+-->
+<html class="reftest-print" style="writing-mode: vertical-rl;">
+ <body style="margin:0;">
+ <div style="background: teal; width:12in; height:2in;">
+ </div>
+ </body>
+</html>
\ No newline at end of file
--- a/layout/reftests/printing/reftest.list
+++ b/layout/reftests/printing/reftest.list
@@ -31,9 +31,10 @@ fuzzy-if(cocoaWidget,1,5000) == 745025-1
== 820496-1.html 820496-1-ref.html
# NOTE: These tests don't yet rigorously test what they're
# trying to test (shrink-to-fit behavior), due to bug 967311.
== 960822.html 960822-ref.html
== 966419-1.html 966419-1-ref.html
== 966419-2.html 966419-2-ref.html
# asserts(3) HTTP(..) fails 1108104.html 1108104-ref.html # bug 1067755, 1135556
+== 1166147.html 1166147-ref.html
== 1321803-1a.html 1321803-1-ref.html
