diff --git a/test/common/nopdevice/nopdevice.cpp b/test/common/nopdevice/nopdevice.cpp
new file mode 100644
index 0000000..ddf6f6e
--- /dev/null
+++ b/test/common/nopdevice/nopdevice.cpp
@@ -0,0 +1,91 @@
+#include "nopdevice.hpp"
+
+#include "common/include/device.hpp"
+#include "common/include/device_config.hpp"
+#include "common/include/software_manager.hpp"
+
+#include <phosphor-logging/lg2.hpp>
+#include <sdbusplus/asio/connection.hpp>
+#include <sdbusplus/asio/object_server.hpp>
+#include <sdbusplus/async.hpp>
+#include <sdbusplus/server.hpp>
+#include <xyz/openbmc_project/Association/Definitions/server.hpp>
+#include <xyz/openbmc_project/Software/Update/server.hpp>
+
+#include <memory>
+
+static long getRandomId()
+{
+    struct timespec ts;
+    clock_gettime(CLOCK_REALTIME, &ts);
+    unsigned int seed = ts.tv_nsec ^ getpid();
+    srandom(seed);
+    return random() % 10000;
+}
+
+// nop code updater needs unique suffix on dbus for parallel unit testing
+NopCodeUpdater::NopCodeUpdater(sdbusplus::async::context& ctx) :
+    NopCodeUpdater(ctx, getRandomId())
+{}
+
+NopCodeUpdater::NopCodeUpdater(sdbusplus::async::context& ctx,
+                               long uniqueSuffix) :
+    SoftwareManager(ctx, "Nop" + std::to_string(uniqueSuffix), true)
+{}
+
+// NOLINTBEGIN
+sdbusplus::async::task<> NopCodeUpdater::getInitialConfigurationSingleDevice(
+    const std::string& /*unused*/, const std::string& /*unused*/,
+    DeviceConfig& /*unused*/)
+// NOLINTEND
+{
+    co_return;
+}
+
+NopDevice::NopDevice(sdbusplus::async::context& ctx, const DeviceConfig& config,
+                     SoftwareManager* parent) :
+    Device(ctx, true, config, parent)
+{}
+NopDevice::NopDevice(sdbusplus::async::context& ctx, SoftwareManager* parent) :
+    Device(ctx, true,
+           DeviceConfig(exampleVendorIANA, exampleCompatible, "Nop",
+                        exampleName),
+           parent)
+{}
+
+// NOLINTBEGIN
+sdbusplus::async::task<bool> NopDevice::updateDevice(
+    const uint8_t* /*unused*/, size_t compImageSize,
+    std::unique_ptr<SoftwareActivationProgress>& activationProgress)
+// NOLINTEND
+{
+    lg2::debug(
+        "[nop device] called device specific update function with image size {SIZE}",
+        "SIZE", compImageSize);
+
+    deviceSpecificUpdateFunctionCalled = true;
+
+    // Setting this property for demonstration purpose.
+    // For a real device, this could represent the
+    // percentage completion of writing the firmware,
+    // and any progress made in the update process within this function.
+    activationProgress->progress(30);
+
+    // There is no hard constraint on the values here,
+    // we do not have to reach any specific percentage.
+    // The percentage should be monotonic and increasing.
+    activationProgress->progress(90);
+
+    co_return true;
+}
+
+// NOLINTBEGIN
+sdbusplus::async::task<std::string> NopDevice::getInventoryItemObjectPath()
+// NOLINTEND
+{
+    // for a real device, it could find its inventory item via associations and
+    // the configuration interface, or go via the mapper to find the
+    // specific inventory item interface and then get the path from there.
+
+    co_return "/xyz/openbmc_project/inventory/item/my_nop_item";
+}