test: introduce INTERACTIVE_DEBUG

Make the interactive debugging of (particularly QEMU) machines less
painful, by replacing the default vt220 TERM with linux one, and
by not shutting down the machine after running the test itself.

diff --git a/test/test-functions b/test/test-functions
index c98f58b278e1fe05b208e00f9b7b142494e3d133..9eafd769cc1ff81dbe03bf3625e910da5c197924 100644 (file)
--- a/test/test-functions
+++ b/test/test-functions
@@ -25,7 +25,7 @@ fi
 PATH_TO_INIT=$ROOTLIBDIR/systemd
 
 BASICTOOLS="test sh bash setsid loadkeys setfont login sulogin gzip sleep echo head tail cat mount umount cryptsetup date dmsetup modprobe sed cmp tee rm true false chmod chown ln xargs"
-DEBUGTOOLS="df free ls stty ps ln ip route dmesg dhclient mkdir cp ping dhclient strace less grep id tty touch du sort hostname find"
+DEBUGTOOLS="df free ls stty ps ln ip route dmesg dhclient mkdir cp ping dhclient strace less grep id tty touch du sort hostname find vi mv"
 
 STATEDIR="${BUILD_DIR:-.}/test/$(basename $(dirname $(realpath $0)))"
 STATEFILE="$STATEDIR/.testdir"
@@ -655,6 +655,21 @@ install_basic_tools() {
 
 install_debug_tools() {
     [[ $DEBUGTOOLS ]] && dracut_install $DEBUGTOOLS
+
+    if [[ $INTERACTIVE_DEBUG ]]; then
+        # Set default TERM from vt220 to linux, so at least basic key shortcuts work
+        local _getty_override="$initdir/etc/systemd/system/serial-getty@.service.d"
+        mkdir -p "$_getty_override"
+        echo -e "[Service]\nEnvironment=TERM=linux" > "$_getty_override/default-TERM.conf"
+
+        cat > "$initdir/etc/motd" << EOF
+To adjust the terminal size use:
+    export COLUMNS=xx
+    export LINES=yy
+or
+    stty cols xx rows yy
+EOF
+    fi
 }
 
 install_libnss() {
@@ -761,7 +776,8 @@ setup_testsuite() {
 
     mkdir -p $initdir/etc/systemd/system/testsuite.target.wants
     ln -fs $TEST_BASE_DIR/testsuite.service $initdir/etc/systemd/system/testsuite.target.wants/testsuite.service
-    ln -fs $TEST_BASE_DIR/end.service $initdir/etc/systemd/system/testsuite.target.wants/end.service
+    # Don't shutdown the machine after running the test when INTERACTIVE_DEBUG is set
+    [[ -z $INTERACTIVE_DEBUG ]] && ln -fs $TEST_BASE_DIR/end.service $initdir/etc/systemd/system/testsuite.target.wants/end.service
 
     # make the testsuite the default target
     ln -fs testsuite.target $initdir/etc/systemd/system/default.target