diff --git a/tests/domaincapsschemadata/qemu_4.0.0.x86_64.xml b/tests/domaincapsschemadata/qemu_4.0.0.x86_64.xml
new file mode 100644
index 0000000000..8595f7faf5
--- /dev/null
+++ b/tests/domaincapsschemadata/qemu_4.0.0.x86_64.xml
@@ -0,0 +1,148 @@
+<domainCapabilities>
+  <path>/usr/bin/qemu-system-x86_64</path>
+  <domain>kvm</domain>
+  <machine>pc-i440fx-4.0</machine>
+  <arch>x86_64</arch>
+  <vcpu max='255'/>
+  <iothreads supported='yes'/>
+  <os supported='yes'>
+    <loader supported='yes'>
+      <value>/usr/share/AAVMF/AAVMF_CODE.fd</value>
+      <value>/usr/share/AAVMF/AAVMF32_CODE.fd</value>
+      <value>/usr/share/OVMF/OVMF_CODE.fd</value>
+      <enum name='type'>
+        <value>rom</value>
+        <value>pflash</value>
+      </enum>
+      <enum name='readonly'>
+        <value>yes</value>
+        <value>no</value>
+      </enum>
+    </loader>
+  </os>
+  <cpu>
+    <mode name='host-passthrough' supported='yes'/>
+    <mode name='host-model' supported='yes'>
+      <model fallback='forbid'>Skylake-Client-IBRS</model>
+      <vendor>Intel</vendor>
+      <feature policy='require' name='ss'/>
+      <feature policy='require' name='hypervisor'/>
+      <feature policy='require' name='tsc_adjust'/>
+      <feature policy='require' name='clflushopt'/>
+      <feature policy='require' name='umip'/>
+      <feature policy='require' name='arch-capabilities'/>
+      <feature policy='require' name='ssbd'/>
+      <feature policy='require' name='xsaves'/>
+      <feature policy='require' name='pdpe1gb'/>
+      <feature policy='require' name='invtsc'/>
+    </mode>
+    <mode name='custom' supported='yes'>
+      <model usable='yes'>qemu64</model>
+      <model usable='yes'>qemu32</model>
+      <model usable='no'>phenom</model>
+      <model usable='yes'>pentium3</model>
+      <model usable='yes'>pentium2</model>
+      <model usable='yes'>pentium</model>
+      <model usable='yes'>n270</model>
+      <model usable='yes'>kvm64</model>
+      <model usable='yes'>kvm32</model>
+      <model usable='yes'>coreduo</model>
+      <model usable='yes'>core2duo</model>
+      <model usable='no'>athlon</model>
+      <model usable='yes'>Westmere-IBRS</model>
+      <model usable='yes'>Westmere</model>
+      <model usable='no'>Skylake-Server-IBRS</model>
+      <model usable='no'>Skylake-Server</model>
+      <model usable='yes'>Skylake-Client-IBRS</model>
+      <model usable='yes'>Skylake-Client</model>
+      <model usable='yes'>SandyBridge-IBRS</model>
+      <model usable='yes'>SandyBridge</model>
+      <model usable='yes'>Penryn</model>
+      <model usable='no'>Opteron_G5</model>
+      <model usable='no'>Opteron_G4</model>
+      <model usable='no'>Opteron_G3</model>
+      <model usable='yes'>Opteron_G2</model>
+      <model usable='yes'>Opteron_G1</model>
+      <model usable='yes'>Nehalem-IBRS</model>
+      <model usable='yes'>Nehalem</model>
+      <model usable='yes'>IvyBridge-IBRS</model>
+      <model usable='yes'>IvyBridge</model>
+      <model usable='no'>Icelake-Server</model>
+      <model usable='no'>Icelake-Client</model>
+      <model usable='yes'>Haswell-noTSX-IBRS</model>
+      <model usable='yes'>Haswell-noTSX</model>
+      <model usable='yes'>Haswell-IBRS</model>
+      <model usable='yes'>Haswell</model>
+      <model usable='no'>EPYC-IBPB</model>
+      <model usable='no'>EPYC</model>
+      <model usable='yes'>Conroe</model>
+      <model usable='yes'>Broadwell-noTSX-IBRS</model>
+      <model usable='yes'>Broadwell-noTSX</model>
+      <model usable='yes'>Broadwell-IBRS</model>
+      <model usable='yes'>Broadwell</model>
+      <model usable='yes'>486</model>
+    </mode>
+  </cpu>
+  <devices>
+    <disk supported='yes'>
+      <enum name='diskDevice'>
+        <value>disk</value>
+        <value>cdrom</value>
+        <value>floppy</value>
+        <value>lun</value>
+      </enum>
+      <enum name='bus'>
+        <value>ide</value>
+        <value>fdc</value>
+        <value>scsi</value>
+        <value>virtio</value>
+        <value>usb</value>
+        <value>sata</value>
+      </enum>
+    </disk>
+    <graphics supported='yes'>
+      <enum name='type'>
+        <value>sdl</value>
+        <value>vnc</value>
+        <value>spice</value>
+      </enum>
+    </graphics>
+    <video supported='yes'>
+      <enum name='modelType'>
+        <value>vga</value>
+        <value>cirrus</value>
+        <value>vmvga</value>
+        <value>qxl</value>
+        <value>virtio</value>
+      </enum>
+    </video>
+    <hostdev supported='yes'>
+      <enum name='mode'>
+        <value>subsystem</value>
+      </enum>
+      <enum name='startupPolicy'>
+        <value>default</value>
+        <value>mandatory</value>
+        <value>requisite</value>
+        <value>optional</value>
+      </enum>
+      <enum name='subsysType'>
+        <value>usb</value>
+        <value>pci</value>
+        <value>scsi</value>
+      </enum>
+      <enum name='capsType'/>
+      <enum name='pciBackend'>
+        <value>default</value>
+        <value>kvm</value>
+        <value>vfio</value>
+      </enum>
+    </hostdev>
+  </devices>
+  <features>
+    <gic supported='no'/>
+    <vmcoreinfo supported='yes'/>
+    <genid supported='yes'/>
+    <sev supported='no'/>
+  </features>
+</domainCapabilities>
diff --git a/tests/domaincapstest.c b/tests/domaincapstest.c
index b9ab148fab..86b8429f23 100644
--- a/tests/domaincapstest.c
+++ b/tests/domaincapstest.c
@@ -502,6 +502,9 @@ mymain(void)
                  "/usr/bin/qemu-system-s390x", NULL,
                  "s390x", VIR_DOMAIN_VIRT_KVM);
 
+    DO_TEST_QEMU("4.0.0", "caps_4.0.0",
+                 "/usr/bin/qemu-system-x86_64", NULL,
+                 "x86_64", VIR_DOMAIN_VIRT_KVM);
     virObjectUnref(cfg);
 
 #endif /* WITH_QEMU */