Add an autopkgtest covering #817236 and various other sanity checks

Because debootstrap is relatively slow, I've named the test according
to what is being bootstrapped (Debian testing) rather than the checks
that are performed, with the intention that additional checks can
be added to it.

Signed-off-by: Simon McVittie <smcv@debian.org>

1 files changed, 47 insertions, 0 deletions

diff --git a/debian/tests/fake/schroot-1.6.10-3 b/debian/tests/fake/schroot-1.6.10-3
new file mode 100755
index 0000000..00d3531
--- /dev/null
+++ b/debian/tests/fake/schroot-1.6.10-3
@@ -0,0 +1,47 @@
+#!/bin/sh
+# fake/schroot-1.6.10-3 -- emulate how schroot/1.6.10-3 would chroot.
+# It bind-mounts /dev/pts and maybe /dev from the host system.
+# (There is of course a lot more that it does, but these are the parts that
+# affect pty users like script(1).)
+#
+# Copyright © 2017 Simon McVittie
+# SPDX-License-Identifier: MIT
+# (see debian/copyright)
+
+set -e
+
+# /etc/schroot/default/fstab
+bind_dev=yes
+
+while true; do
+	case "$1" in
+		(--sbuild)
+			shift
+			# /etc/schroot/sbuild/fstab
+			bind_dev=no
+			;;
+		(*)
+			break
+	esac
+done
+
+chroot="$1"
+shift
+if test -z "$chroot" || test -z "$1"; then
+	echo "Usage: $0 CHROOT COMMAND...">&2
+	exit 2
+fi
+
+[ "$bind_dev" = no ] || mount --bind /dev "$chroot/dev"
+mount --bind /dev/pts "$chroot/dev/pts"
+
+ls -l "$chroot/dev/ptmx" | sed -e 's/^/# fake-schroot: /' >&2
+ls -l "$chroot/dev/pts/ptmx" | sed -e 's/^/# fake-schroot: /' >&2
+
+e=0
+chroot "$chroot" "$@" || e=$?
+
+umount "$chroot/dev/pts"
+[ "$bind_dev" = no ] || umount "$chroot/dev"
+
+exit "$e"