test: mangle the machine ID only for the QEMU test part

systemd-nspawn doesn't like invalid machine IDs and refuses to boot with one:

TEST-74-AUX-UTILS RUN: Tests for auxiliary utilities
...
Spawning container TEST-74-AUX-UTILS--3 on /var/tmp/systemd-test-TEST-74-AUX-UTILS_3/root.
Press Ctrl-] three times within 1s to kill container.
Failed to read machine ID from container image: Structure needs cleaning
E: nspawn failed with exit code 1

Follow-up to b4d42a82eb.

diff --git a/test/TEST-74-AUX-UTILS/test.sh b/test/TEST-74-AUX-UTILS/test.sh
index 6b7c251049659edce3267d1e58d65cf47997bdfa..1e360658ed5364a268dac9ecbe98582f5cfa914a 100755 (executable)
--- a/test/TEST-74-AUX-UTILS/test.sh
+++ b/test/TEST-74-AUX-UTILS/test.sh
@@ -10,7 +10,11 @@ TEST_DESCRIPTION="Tests for auxiliary utilities"
 test_append_files() {
     local workspace="${1:?}"
 
-    printf "556f48e837bc4424a710fa2e2c9d3e3c\ne3d\n" >"$workspace/etc/machine-id"
+    if ! get_bool "${TEST_PREFER_NSPAWN:-}" && ! get_bool "${TEST_NO_QEMU:-}"; then
+        # Check if we can correctly boot with an invalid machine ID only if we run
+        # the QEMU test, as nspawn refuses the invalid machine ID with -EUCLEAN
+        printf "556f48e837bc4424a710fa2e2c9d3e3c\ne3d\n" >"$workspace/etc/machine-id"
+    fi
 }
 
 do_test "$@"