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diff --git a/usr.sbin/bhyve/Makefile b/usr.sbin/bhyve/Makefile
--- a/usr.sbin/bhyve/Makefile
+++ b/usr.sbin/bhyve/Makefile
@@ -137,4 +137,7 @@
NO_WCAST_ALIGN=
+HAS_TESTS=
+SUBDIR.${MK_TESTS}+= tests
+
.include <bsd.prog.mk>
diff --git a/usr.sbin/bhyve/tests/Makefile b/usr.sbin/bhyve/tests/Makefile
new file mode 100644
--- /dev/null
+++ b/usr.sbin/bhyve/tests/Makefile
@@ -0,0 +1,5 @@
+PACKAGE= tests
+
+ATF_TESTS_SH+= bhyve_test
+
+.include <bsd.test.mk>
diff --git a/usr.sbin/bhyve/tests/bhyve_test.sh b/usr.sbin/bhyve/tests/bhyve_test.sh
new file mode 100644
--- /dev/null
+++ b/usr.sbin/bhyve/tests/bhyve_test.sh
@@ -0,0 +1,137 @@
+# SPDX-License-Identifier: BSD-2-Clause
+#
+# Copyright (c) 2026 The FreeBSD Foundation
+
+atf_test_case check_s_list
+check_s_list_head()
+{
+ atf_set "descr" "Check PCI device listing"
+ atf_set "require.progs" "bhyve"
+}
+
+check_s_list_body()
+{
+ atf_check -o save:devices bhyve -s help
+
+ # Output must be non-empty
+ atf_check test -s devices
+
+ # Confirm that device names contain no whitespace
+ atf_check -s ignore grep -E "[[:space:]]+" devices
+
+ # Confirm that duplicates aren't printed out
+ sort devices > devices.sorted
+ sort -u devices > devices.sorted-unique
+ atf_check diff -u devices.sorted-unique devices.sorted
+
+ # Check some essential devices available on all arches
+ for device in hostbridge nvme virtio-net; do
+ atf_check grep -Fxq "${device}" devices
+ done
+}
+
+atf_test_case check_l_list
+check_l_list_head()
+{
+ atf_set "descr" "Check LPC device listing"
+ atf_set "require.arch" "amd64"
+ atf_set "require.progs" "bhyve"
+}
+
+check_l_list_body()
+{
+ cat >expected <<EOF
+bootrom
+com1
+com2
+com3
+com4
+tpm
+pc-testdev
+EOF
+ atf_check -o file:expected bhyve -l help
+}
+
+atf_test_case check_o_list
+check_o_list_head()
+{
+ atf_set "descr" "Check config option listing"
+ atf_set "require.progs" "bhyve"
+}
+
+check_o_list_body()
+{
+ atf_check -o save:options bhyve -o help
+
+ # Output must be non-empty
+ atf_check test -s options
+
+ # Confirm that option names contain no whitespace
+ atf_check -s ignore grep -E "[[:space:]]+" options
+
+ # Confirm that duplicates aren't printed out
+ sort options > options.sorted
+ sort -u options > options.sorted-unique
+ atf_check diff -u options.sorted-unique options.sorted
+
+ # Options are sorted
+ atf_check env LC_ALL=C sort -c options
+
+ # Check the base schema, a linker-set extension,
+ # and an option-set inheritance
+ for option in memory.size pci.B.S.F.maxq pci.B.S.F.path; do
+ atf_check grep -Fxq "${option}" options
+ done
+
+ # Arch-specific option
+ case "$(uname -p)" in
+ amd64)
+ machdep_option="x86.strictmsr"
+ ;;
+ aarch64|riscv64)
+ machdep_option="console"
+ ;;
+ *)
+ atf_fail "unsupported architecture: $(uname -p)"
+ ;;
+ esac
+
+ atf_check grep -Fxq "${machdep_option}" options
+}
+
+atf_test_case check_config_dump_sanity
+check_config_dump_sanity_head()
+{
+ atf_set "descr" "Check config.dump=1 sanity"
+ atf_set "require.progs" "bhyve"
+}
+
+check_config_dump_sanity_body()
+{
+ atf_check -s exit:1 -o save:config \
+ bhyve -o memory.size=123M -o config.dump=1 test-vm
+
+ # Basic sanity
+ for value in \
+ "config.dump=1" \
+ "memory.size=123M" \
+ "name=test-vm"; do
+ atf_check grep -Fxq "${value}" config
+ done
+
+ # Check that generated config could be fed back with -k
+ atf_check -s exit:1 -o save:config.2 bhyve -k config
+
+ atf_check -o save:config.sorted env LC_ALL=C sort config
+ atf_check -o save:config.2.sorted env LC_ALL=C sort config.2
+
+ atf_check diff -u config.sorted config.2.sorted
+}
+
+atf_init_test_cases()
+{
+ atf_add_test_case check_s_list
+ atf_add_test_case check_l_list
+ atf_add_test_case check_o_list
+ atf_add_test_case check_config_dump_sanity
+}

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