re-land r7258 with fixes and tests
BUG=http://code.google.com/p/skia/issues/detail?id=1079
TBR=reed
Review URL: https://codereview.appspot.com/7132060
git-svn-id: http://skia.googlecode.com/svn/trunk@7291 2bbb7eff-a529-9590-31e7-b0007b416f81
diff --git a/gm/tests/run.sh b/gm/tests/run.sh
index 4daff63..9d1461e 100755
--- a/gm/tests/run.sh
+++ b/gm/tests/run.sh
@@ -42,7 +42,6 @@
# Run gm...
# - with the arguments in $1
-# - writing resulting images into $2/$OUTPUT_ACTUAL_SUBDIR/images
# - writing stdout into $2/$OUTPUT_ACTUAL_SUBDIR/stdout
# - writing json summary into $2/$OUTPUT_ACTUAL_SUBDIR/json-summary.txt
# - writing return value into $2/$OUTPUT_ACTUAL_SUBDIR/return_value
@@ -122,6 +121,7 @@
GM_TESTDIR=gm/tests
GM_INPUTS=$GM_TESTDIR/inputs
GM_OUTPUTS=$GM_TESTDIR/outputs
+GM_TEMPFILES=$GM_TESTDIR/tempfiles
create_inputs_dir $GM_INPUTS
@@ -142,4 +142,15 @@
# section should be empty.
gm_test "--hierarchy --match dashing2 --config 8888" "$GM_OUTPUTS/no-readpath"
+# Write out a handful of test images and read them back in.
+#
+# This test would have caught
+# http://code.google.com/p/skia/issues/detail?id=1079 ('gm generating
+# spurious pixel_error messages as of r7258').
+IMAGEDIR=$GM_TEMPFILES/aaclip-images
+rm -rf $IMAGEDIR
+mkdir -p $IMAGEDIR
+gm_test "--match aaclip --config 8888 -w $IMAGEDIR" "$GM_OUTPUTS/aaclip-write"
+gm_test "--match aaclip --config 8888 -r $IMAGEDIR" "$GM_OUTPUTS/aaclip-readback"
+
echo "All tests passed."