Image regress tests.

regress/image-floating-content-wipe.sh

@@ -0,0 +1,58 @@
+#!/bin/sh
+
+# A SIXEL pane redraw must erase only cells owned by that pane, preserving
+# content in an overlapping floating pane when leaving copy mode.
+
+. ./image-common.inc
+
+PATH=/bin:/usr/bin
+TERM=screen
+LC_ALL=C.UTF-8
+export TERM LC_ALL
+
+[ -z "$TEST_TMUX" ] && TEST_TMUX=$(readlink -f ../tmux)
+TMUX="$TEST_TMUX -Lifcw$$ -f/dev/null"
+TMUX2="$TEST_TMUX -Lifcw-inner$$ -f/dev/null"
+$TMUX kill-server 2>/dev/null
+$TMUX2 kill-server 2>/dev/null
+
+TMP=$(mktemp)
+trap "$TMUX kill-server 2>/dev/null; $TMUX2 kill-server 2>/dev/null; rm -f $TMP" 0 1 15
+
+$TMUX2 new-session -d -x 60 -y 20 "sh -c 'i=0; while [ \$i -lt 30 ]; do printf \"TILE%02d\\n\" \$i; i=\$((i + 1)); done; exec sleep 100'" \
+	|| exit 1
+$TMUX2 new-pane -x20 -y6 -X8 -Y3 -T FLOATTITLE "sh -c 'printf FLOATCONTENT; exec sleep 100'" \
+	|| exit 1
+image_check_support $TMUX2
+
+# The attaching client must be detected as SIXEL-capable - this bug does
+# not reproduce on a fallback or Kitty client.
+$TMUX2 set -as terminal-features ',*:sixel' || exit 1
+
+$TMUX new-session -d -x 60 -y 20 || exit 1
+$TMUX send-keys -l "$TMUX2 attach-session" || exit 1
+$TMUX send-keys Enter || exit 1
+sleep 1
+
+# Sanity check: the floating pane's content is visible before anything
+# disturbs it.
+$TMUX capturep -p >$TMP || exit 1
+grep -q 'FLOATCONTENT' $TMP || exit 1
+
+# Click the tiled pane (making it active), enter copy-mode scrolled up
+# (matching a PageUp binding), move up one line (matching an Up binding),
+# then exit copy-mode - the exit is what triggers window_pane_reset_mode(),
+# which is what actually caused the erase.
+$TMUX2 select-pane -t%0 || exit 1
+sleep 1
+$TMUX2 copy-mode -u -t%0 || exit 1
+sleep 1
+$TMUX2 send-keys -t%0 -X cursor-up || exit 1
+sleep 1
+$TMUX2 send-keys -t%0 -X cancel || exit 1
+sleep 1
+
+$TMUX capturep -p >$TMP || exit 1
+grep -q 'FLOATCONTENT' $TMP || exit 1
+
+exit 0