tests: Some unit tests for vmstate.c

 * Basic load/save tests
 * Tests for loading older versions
 * Tests for .field_exists() handling
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
Signed-off-by: Juan Quintela <quintela@redhat.com>

tests/.gitignore

@@ -20,6 +20,7 @@ test-qmp-commands
 test-qmp-input-strict
 test-qmp-marshal.c
 test-thread-pool
+test-vmstate
 test-x86-cpuid
 test-xbzrle
 *-test

tests/Makefile

@@ -54,6 +54,7 @@ check-unit-y += tests/test-bitops$(EXESUF)
 check-unit-y += tests/test-qdev-global-props$(EXESUF)
 check-unit-y += tests/check-qom-interface$(EXESUF)
 gcov-files-check-qom-interface-y = qom/object.c
+check-unit-y += tests/test-vmstate$(EXESUF)
 
 check-block-$(CONFIG_POSIX) += tests/qemu-iotests-quick.sh
 
@@ -167,6 +168,9 @@ tests/test-qdev-global-props$(EXESUF): tests/test-qdev-global-props.o \
 	$(qom-core-obj) \
 	$(test-qapi-obj-y) \
 	libqemuutil.a libqemustub.a
+tests/test-vmstate$(EXESUF): tests/test-vmstate.o \
+	vmstate.o qemu-file.o \
+	libqemuutil.a
 
 tests/test-qapi-types.c tests/test-qapi-types.h :\
 $(SRC_PATH)/tests/qapi-schema/qapi-schema-test.json $(SRC_PATH)/scripts/qapi-types.py