diff --git a/tests/ioc_instance/ioc.db b/tests/ioc_instance/ioc.db
new file mode 100644
index 0000000..aecf0bb
--- /dev/null
+++ b/tests/ioc_instance/ioc.db
@@ -0,0 +1,27 @@
+#############################################################################
+# DB substitution file generated by http://github.com/epics-containers/ibek #
+#############################################################################
+
+file "$(ADARAVIS)/db/aravisCamera.template" {
+pattern 
+	{ "P",               "R",     "PORT",    "TIMEOUT", "ADDR" }
+	{ "BL45P-EA-MAP-01", ":DET:", "DET.DET", "1",       "0"    }
+}
+
+file "$(ADGENICAM)/db/AVT_Mako_G234B.template" {
+pattern 
+	{ "P",               "R",     "PORT",    "TIMEOUT", "ADDR" }
+	{ "BL45P-EA-MAP-01", ":DET:", "DET.DET", "1",       "0"    }
+}
+
+file "$(ADCORE)/db/NDPva.template" {
+pattern 
+	{ "NDARRAY_PORT", "ADDR", "SCANRATE", "NDARRAY_ADDR", "ENABLED", "P",               "R",     "TIMEOUT", "PORT"    }
+	{ "DET.DET",      "0",    "I/O Intr", "0",            "0",       "BL45P-EA-MAP-01", ":PVA:", "1",       "DET.PVA" }
+}
+
+file "$(ADCORE)/db/NDFileHDF5.template" {
+pattern 
+	{ "NDARRAY_PORT", "ADDR", "SCANRATE", "NDARRAY_ADDR", "ENABLED", "XMLSIZE", "P",               "R",      "TIMEOUT", "PORT"     }
+	{ "DET.DET",      "0",    "I/O Intr", "0",            "0",       "2048",    "BL45P-EA-MAP-01", ":HDF5:", "1",       "DET.HDF5" }
+}
diff --git a/tests/ioc_instance/ioc.yaml b/tests/ioc_instance/ioc.yaml
new file mode 100644
index 0000000..d64c319
--- /dev/null
+++ b/tests/ioc_instance/ioc.yaml
@@ -0,0 +1,35 @@
+# yaml-language-server: $schema=https://github.com/epics-containers/ioc-adaravis/releases/download/23.9.4/ibek.ioc.schema.json
+
+ioc_name: bl45p-ea-ioc-01
+description: Sample camera IOC for BL45P
+
+entities:
+  - type: epics.EpicsCaMaxArrayBytes
+    max_bytes: 6000000
+
+  - type: ADAravis.aravisCamera
+    CLASS: AVT_Mako_G234B
+    PORT: DET.DET
+    P: BL45P-EA-MAP-01
+    R: ":DET:"
+    ID: 172.23.59.11
+    PV_ALIAS: "0" # TODO this ARG should have default
+
+  - type: ADCore.NDPvaPlugin
+    PORT: DET.PVA
+    PVNAME: BL45P-EA-MAP-01:PVA:OUTPUT
+    P: BL45P-EA-MAP-01
+    R: ":PVA:"
+    NDARRAY_PORT: DET.DET
+    BLOCK: 1 # TODO remaining ARGS should have defaults
+    PRIORITY: 0
+    STACKSIZE: 0
+    NDARRAY_ADDR: 0
+
+  - type: ADCore.NDFileHDF5
+    PORT: DET.HDF5
+    P: BL45P-EA-MAP-01
+    R: ":HDF5:"
+    NDARRAY_PORT: DET.DET
+    BLOCK: 1
+    NDARRAY_ADDR: 0
diff --git a/tests/ioc_instance/st.cmd b/tests/ioc_instance/st.cmd
new file mode 100644
index 0000000..a0c004a
--- /dev/null
+++ b/tests/ioc_instance/st.cmd
@@ -0,0 +1,20 @@
+# EPICS IOC Startup Script generated by https://github.com/epics-containers/ibek
+
+cd "/epics/ioc"
+
+epicsEnvSet EPICS_CA_MAX_ARRAY_BYTES 6000000
+
+dbLoadDatabase dbd/ioc.dbd
+ioc_registerRecordDeviceDriver pdbbase
+
+aravisConfig(const char *portName, const char *cameraName, size_t maxMemory, int priority, int stackSize)
+aravisConfig("DET.DET", "172.23.59.11", -1, 0, 1)
+# NDPvaConfigure(portName, queueSize, blockingCallbacks, NDArrayPort, NDArrayAddr, pvName, maxBuffers, maxMemory, priority, stackSize)
+NDPvaConfigure("DET.PVA", 2, 1, "DET.DET", 0, BL45P-EA-MAP-01:PVA:OUTPUT, 0, 0, 0, 0)
+startPVAServer
+# NDFileHDF5Configure(portName, queueSize, blockingCallbacks, NDArrayPort, NDArrayAddr)
+NDFileHDF5Configure("DET.HDF5", 2, 1, "DET.DET", 0)
+
+dbLoadRecords /tmp/ioc.db
+iocInit
+
diff --git a/tests/test_ioc_instance.sh b/tests/test_ioc_instance.sh
new file mode 100755
index 0000000..5f9b6c5
--- /dev/null
+++ b/tests/test_ioc_instance.sh
@@ -0,0 +1,23 @@
+#!/bin/bash
+
+set -xe
+
+THIS_DIR=$(dirname ${0})
+cd ${THIS_DIR}/ioc_instance
+
+if ! ibek --version; then
+    pip install ibek
+fi
+
+tmpdir=$(mktemp -d)
+
+ibek startup generate ioc.yaml ../../*/*.support.yaml --out ${tmpdir}/st.cmd \
+    --db-out ${tmpdir}/ioc.db
+
+if not diff ${tmpdir}/st.cmd ./st.cmd || not diff ${tmpdir}/ioc.db ./ioc.db; then
+    echo "ERROR: Generated files st.cmd / db.subst differ from expected"
+    exit 1
+fi
+
+rm -r ${tmpdir}
+