diff --git a/src/test/.gitignore b/src/test/.gitignore
index 9c5e674..55db6d7 100644
--- a/src/test/.gitignore
+++ b/src/test/.gitignore
@@ -9,3 +9,5 @@
 /propertywatchgentest
 /callbackgentest.hpp
 /callbackgentest
+/callbackgroupgentest.hpp
+/callbackgroupgentest
diff --git a/src/test/Makefile.am b/src/test/Makefile.am
index f4e2e46..893f264 100644
--- a/src/test/Makefile.am
+++ b/src/test/Makefile.am
@@ -129,3 +129,28 @@
 		-d yaml/callbackgentest \
 		-o $(builddir)/$@ \
 		generate-cpp
+
+check_PROGRAMS += callbackgroupgentest
+callbackgroupgentest_SOURCES = \
+	callbackgroupgentest.cpp
+callbackgroupgentest_CXXFLAGS = \
+	$(gtest_cflags)
+callbackgroupgentest_LDFLAGS = \
+	$(OESDK_TESTCASE_FLAGS)
+callbackgroupgentest_LDADD = \
+	${gtest_ldadd}
+
+BUILT_SOURCES += callbackgroupgentest.hpp
+CLEANFILES += callbackgroupgentest.hpp
+
+CALLBACKGROUP_TEST_GEN_DEPS = \
+	templates/callbackgroupgentest.mako.hpp \
+	yaml/callbackgroupgentest
+
+callbackgroupgentest.hpp: $(CALLBACKGROUP_TEST_GEN_DEPS)
+	$(AM_V_GEN) $(PYTHON) $(PDMGEN) \
+		-t callbackgroupgentest.mako.hpp \
+		-p "${TEMPLATESEARCH}" \
+		-d yaml/callbackgroupgentest \
+		-o $(builddir)/$@ \
+		generate-cpp
diff --git a/src/test/callbackgroupgentest.cpp b/src/test/callbackgroupgentest.cpp
new file mode 100644
index 0000000..6493d9a
--- /dev/null
+++ b/src/test/callbackgroupgentest.cpp
@@ -0,0 +1,31 @@
+#include <array>
+#include <string>
+#include <gtest/gtest.h>
+#include "data_types.hpp"
+
+using namespace phosphor::dbus::monitoring;
+
+#include "callbackgroupgentest.hpp"
+
+const std::array<std::vector<size_t>, 4> expectedGroups = {{
+        {0, 1, 2},
+        {0, 1},
+        {2, 4, 5},
+        {5},
+    }
+};
+
+TEST(CallbackGroupGenTest, GroupsSameSize)
+{
+    ASSERT_EQ(sizeof(expectedGroups), sizeof(groups));
+}
+
+TEST(CallbackGroupGenTest, GroupsSameContent)
+{
+    size_t i;
+    for (i = 0; i < expectedGroups.size(); ++i)
+    {
+        ASSERT_EQ(groups[i],
+                  expectedGroups[i]);
+    }
+}
diff --git a/src/test/templates/callbackgroupgentest.mako.hpp b/src/test/templates/callbackgroupgentest.mako.hpp
new file mode 100644
index 0000000..28b8ed8
--- /dev/null
+++ b/src/test/templates/callbackgroupgentest.mako.hpp
@@ -0,0 +1,5 @@
+const std::array<std::vector<size_t>, ${len(callbackgroups)}> groups = {{
+% for g in callbackgroups:
+    {${', '.join([str(x) for x in g.members])}},
+% endfor
+}};
diff --git a/src/test/yaml/callbackgroupgentest/test.yaml b/src/test/yaml/callbackgroupgentest/test.yaml
new file mode 100644
index 0000000..03962ba
--- /dev/null
+++ b/src/test/yaml/callbackgroupgentest/test.yaml
@@ -0,0 +1,88 @@
+# Validate nested callback groups.
+
+- name: test path group 1
+  class: group
+  group: path
+  members:
+    - meta: path
+      path: /xyz/openbmc_project/testing/inst4
+
+- name: test path group 2
+  class: group
+  group: path
+  members:
+    - meta: path
+      path: /xyz/openbmc_project/testing/inst4
+    - meta: path
+      path: /xyz/openbmc_project/testing/inst6
+
+- name: test property group 1
+  class: group
+  group: property
+  type: int32
+  members:
+    - interface: xyz.openbmc_project.Sensor.Iface1
+      meta: property
+      property: Value
+
+- name: test property group 2
+  class: group
+  group: property
+  type: string
+  members:
+    - interface: xyz.openbmc_project.Sensor.Iface3
+      meta: property
+      property: Value2
+
+- name: test journal callback 1
+  class: callback
+  callback: journal
+  paths: test path group 1
+  properties: test property group 1
+  severity: INFO
+  message: Hello world from PDM!
+
+- name: test journal callback 2
+  class: callback
+  callback: journal
+  paths: test path group 1
+  properties: test property group 1
+  severity: INFO
+  message: Hello world from PDM!
+
+- name: test journal callback 3
+  class: callback
+  callback: journal
+  paths: test path group 2
+  properties: test property group 2
+  severity: INFO
+  message: Hello world from PDM!
+
+- name: test group callback 1
+  class: callback
+  callback: group
+  members:
+    - test journal callback 1
+    - test journal callback 2
+    - test journal callback 3
+
+- name: test group callback 2
+  class: callback
+  callback: group
+  members:
+    - test journal callback 1
+    - test journal callback 2
+
+- name: test group callback 3
+  class: callback
+  callback: group
+  members:
+    - test journal callback 3
+    - test group callback 2
+    - test group callback 3
+
+- name: test group callback 4
+  class: callback
+  callback: group
+  members:
+    - test group callback 3