diff --git a/lib/common/tests/schemas/Makefile.am b/lib/common/tests/schemas/Makefile.am
index 8854eb264c..394217f14c 100644
--- a/lib/common/tests/schemas/Makefile.am
+++ b/lib/common/tests/schemas/Makefile.am
@@ -1,57 +1,58 @@
 #
 # Copyright 2023 the Pacemaker project contributors
 #
 # The version control history for this file may have further details.
 #
 # This source code is licensed under the GNU General Public License version 2
 # or later (GPLv2+) WITHOUT ANY WARRANTY.
 #
 
 include $(top_srcdir)/mk/tap.mk
 include $(top_srcdir)/mk/unittest.mk
 
 CFLAGS += -DPCMK__TEST_SCHEMA_DIR='"$(abs_builddir)/schemas"'
 
 # Add "_test" to the end of all test program names to simplify .gitignore.
-check_PROGRAMS = pcmk__build_schema_xml_node_test 	\
+check_PROGRAMS = get_schema_version_test 		\
+		 pcmk__build_schema_xml_node_test 	\
 		 pcmk__schema_files_later_than_test 	\
 		 pcmk__xml_find_x_0_schema_index_test
 
 TESTS = $(check_PROGRAMS)
 
 $(TESTS): setup-schema-dir
 
 # Set up a temporary schemas/ directory containing only some of the full set of
 # pacemaker schema files.  This lets us know exactly how many schemas are present,
 # allowing us to write tests without having to make changes when new schemas are
 # added.
 #
 # This directory contains the following:
 #
 # * pacemaker-next.rng   - Used to verify that this sorts before all versions
 # * upgrade-*.xsl        - Required by various schema versions
 # * pacemaker-[0-9]*.rng - We're only pulling in 15 schemas, which is enough
 #                          to get everything through pacemaker-3.0.rng.  This
 #                          includes 2.10, needed so we can check that versions
 #                          are compared as numbers instead of strings.
 # * other RNG files      - This catches everything except the pacemaker-*rng
 #                          files.  These files are included by the top-level
 #                          pacemaker-*rng files, so we need them for tests.
 #                          This will glob more than we need, but the extra ones
 #                          won't get in the way.
 .PHONY: setup-schema-dir
 setup-schema-dir:
 	$(MKDIR_P) schemas
 	( cd schemas ; \
 	  ln -sf $(abs_top_builddir)/xml/pacemaker-next.rng . ; \
 	  ln -sf $(abs_top_builddir)/xml/upgrade-*.xsl . ; \
 	  for f in $(shell ls -1v $(abs_top_builddir)/xml/pacemaker-[0-9]*.rng | head -15); do \
 		ln -sf $$f $$(basename $$f); \
 	  done ; \
 	  for f in $(shell ls -1 $(top_srcdir)/xml/*.rng | grep -v pacemaker); do \
 		ln -sf ../$$f $$(basename $$f); \
 	  done )
 
 .PHONY: clean-local
 clean-local:
 	-rm -rf schemas
diff --git a/lib/common/tests/schemas/get_schema_version_test.c b/lib/common/tests/schemas/get_schema_version_test.c
new file mode 100644
index 0000000000..0d503aa792
--- /dev/null
+++ b/lib/common/tests/schemas/get_schema_version_test.c
@@ -0,0 +1,53 @@
+/*
+ * Copyright 2023 the Pacemaker project contributors
+ *
+ * The version control history for this file may have further details.
+ *
+ * This source code is licensed under the GNU General Public License version 2
+ * or later (GPLv2+) WITHOUT ANY WARRANTY.
+ */
+
+#include <crm_internal.h>
+
+#include <crm/msg_xml.h>
+#include <crm/common/unittest_internal.h>
+#include <crm/common/xml_internal.h>
+
+static int
+setup(void **state) {
+    setenv("PCMK_schema_directory", PCMK__TEST_SCHEMA_DIR, 1);
+    crm_schema_init();
+    return 0;
+}
+
+static int
+teardown(void **state) {
+    crm_schema_cleanup();
+    unsetenv("PCMK_schema_directory");
+    return 0;
+}
+
+static void
+bad_input(void **state) {
+    assert_int_equal(16, get_schema_version(NULL));
+    assert_int_equal(-1, get_schema_version(""));
+    assert_int_equal(-1, get_schema_version("blahblah"));
+    assert_int_equal(-1, get_schema_version("pacemaker-2.47"));
+    assert_int_equal(-1, get_schema_version("pacemaker-47.0"));
+}
+
+static void
+typical_usage(void **state) {
+    assert_int_equal(0, get_schema_version("pacemaker-1.0"));
+    assert_int_equal(0, get_schema_version("PACEMAKER-1.0"));
+    assert_int_equal(1, get_schema_version("pacemaker-1.2"));
+    assert_int_equal(3, get_schema_version("pacemaker-2.0"));
+    assert_int_equal(3, get_schema_version("pAcEmAkEr-2.0"));
+    assert_int_equal(8, get_schema_version("pacemaker-2.5"));
+    assert_int_equal(14, get_schema_version("pacemaker-3.0"));
+    assert_int_equal(14, get_schema_version("paceMAKER-3.0"));
+}
+
+PCMK__UNIT_TEST(setup, teardown,
+                cmocka_unit_test(bad_input),
+                cmocka_unit_test(typical_usage));