When configuring QEMU with the --without-default-devices switch, these
tests are currently failing since they assume that the "pc" and "q35"
machines are always available. Add some proper checks to make the test
work without these machines, too.

Signed-off-by: Thomas Huth <thuth@redhat.com>
---
 tests/qtest/cdrom-test.c | 77 ++++++++++++++++++++++------------------
 1 file changed, 42 insertions(+), 35 deletions(-)

diff --git a/tests/qtest/cdrom-test.c b/tests/qtest/cdrom-test.c
index 5d89e62515..9d72b24e4b 100644
--- a/tests/qtest/cdrom-test.c
+++ b/tests/qtest/cdrom-test.c
@@ -135,13 +135,35 @@ static void add_x86_tests(void)
         return;
     }
 
-    qtest_add_data_func("cdrom/boot/default", "-cdrom ", test_cdboot);
-    if (qtest_has_device("virtio-scsi-ccw")) {
-        qtest_add_data_func("cdrom/boot/virtio-scsi",
-                            "-device virtio-scsi -device scsi-cd,drive=cdr "
-                            "-blockdev file,node-name=cdr,filename=",
-                            test_cdboot);
+    if (qtest_has_machine("pc")) {
+        qtest_add_data_func("cdrom/boot/default", "-cdrom ", test_cdboot);
+        if (qtest_has_device("virtio-scsi-ccw")) {
+            qtest_add_data_func("cdrom/boot/virtio-scsi",
+                                "-device virtio-scsi -device scsi-cd,drive=cdr "
+                                "-blockdev file,node-name=cdr,filename=",
+                                test_cdboot);
+        }
+
+        if (qtest_has_device("am53c974")) {
+            qtest_add_data_func("cdrom/boot/am53c974",
+                                "-device am53c974 -device scsi-cd,drive=cd1 "
+                                "-drive if=none,id=cd1,format=raw,file=",
+                                test_cdboot);
+        }
+        if (qtest_has_device("dc390")) {
+            qtest_add_data_func("cdrom/boot/dc390",
+                                "-device dc390 -device scsi-cd,drive=cd1 "
+                                "-blockdev file,node-name=cd1,filename=",
+                                test_cdboot);
+        }
+        if (qtest_has_device("lsi53c895a")) {
+            qtest_add_data_func("cdrom/boot/lsi53c895a",
+                                "-device lsi53c895a -device scsi-cd,drive=cd1 "
+                                "-blockdev file,node-name=cd1,filename=",
+                                test_cdboot);
+        }
     }
+
     /*
      * Unstable CI test under load
      * See https://lists.gnu.org/archive/html/qemu-devel/2019-02/msg05509.html
@@ -150,35 +172,20 @@ static void add_x86_tests(void)
         qtest_add_data_func("cdrom/boot/isapc", "-M isapc "
                             "-drive if=ide,media=cdrom,file=", test_cdboot);
     }
-    if (qtest_has_device("am53c974")) {
-        qtest_add_data_func("cdrom/boot/am53c974",
-                            "-device am53c974 -device scsi-cd,drive=cd1 "
-                            "-drive if=none,id=cd1,format=raw,file=",
-                            test_cdboot);
-    }
-    if (qtest_has_device("dc390")) {
-        qtest_add_data_func("cdrom/boot/dc390",
-                            "-device dc390 -device scsi-cd,drive=cd1 "
-                            "-blockdev file,node-name=cd1,filename=",
-                            test_cdboot);
-    }
-    if (qtest_has_device("lsi53c895a")) {
-        qtest_add_data_func("cdrom/boot/lsi53c895a",
-                            "-device lsi53c895a -device scsi-cd,drive=cd1 "
-                            "-blockdev file,node-name=cd1,filename=",
-                            test_cdboot);
-    }
-    if (qtest_has_device("megasas")) {
-        qtest_add_data_func("cdrom/boot/megasas", "-M q35 "
-                            "-device megasas -device scsi-cd,drive=cd1 "
-                            "-blockdev file,node-name=cd1,filename=",
-                            test_cdboot);
-    }
-    if (qtest_has_device("megasas-gen2")) {
-        qtest_add_data_func("cdrom/boot/megasas-gen2", "-M q35 "
-                            "-device megasas-gen2 -device scsi-cd,drive=cd1 "
-                            "-blockdev file,node-name=cd1,filename=",
-                            test_cdboot);
+
+    if (qtest_has_machine("q35")) {
+        if (qtest_has_device("megasas")) {
+            qtest_add_data_func("cdrom/boot/megasas", "-M q35 "
+                                "-device megasas -device scsi-cd,drive=cd1 "
+                                "-blockdev file,node-name=cd1,filename=",
+                                test_cdboot);
+        }
+        if (qtest_has_device("megasas-gen2")) {
+            qtest_add_data_func("cdrom/boot/megasas-gen2", "-M q35 "
+                                "-device megasas-gen2 -device scsi-cd,drive=cd1 "
+                                "-blockdev file,node-name=cd1,filename=",
+                                test_cdboot);
+        }
     }
 }
 
-- 
2.46.0