[device/bcache] stub a unit test

include/.symlinks.in

@@ -14,6 +14,7 @@
 @top_srcdir@/lib/config/defaults.h
 @top_srcdir@/lib/datastruct/btree.h
 @top_srcdir@/lib/datastruct/str_list.h
+@top_srcdir@/lib/device/bcache.h
 @top_srcdir@/lib/device/dev-cache.h
 @top_srcdir@/lib/device/dev-ext-udev-constants.h
 @top_srcdir@/lib/device/dev-type.h

lib/device/bcache.h

@@ -16,6 +16,7 @@
 #define BCACHE_H
 
 #include <stdint.h>
+#include <stdbool.h>
 
 #include "libdevmapper.h"
 

test/unit/Makefile.in

@@ -16,6 +16,7 @@ top_builddir = @top_builddir@
 
 VPATH = $(srcdir)
 UNITS = \
+	bcache_t.c \
 	bitset_t.c\
 	config_t.c\
 	dmlist_t.c\
@@ -37,7 +38,7 @@ SOURCES = $(UNITS)
 endif
 
 ifeq ("$(TESTING)", "yes")
-LDLIBS += -ldevmapper @CUNIT_LIBS@
+LDLIBS += $(LVMINTERNAL_LIBS) -ldevmapper -laio @CUNIT_LIBS@
 CFLAGS += @CUNIT_CFLAGS@
 
 check: unit

test/unit/bcache_t.c

@@ -0,0 +1,38 @@
+/*
+ * Copyright (C) 2018 Red Hat, Inc. All rights reserved.
+ *
+ * This file is part of LVM2.
+ *
+ * This copyrighted material is made available to anyone wishing to use,
+ * modify, copy, or redistribute it subject to the terms and conditions
+ * of the GNU General Public License v.2.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#include "units.h"
+#include "bcache.h"
+
+int bcache_init(void)
+{
+	return 0;
+}
+
+int bcache_fini(void)
+{
+	return 0;
+}
+
+static void test_create(void)
+{
+	struct bcache *cache = bcache_create(8, 16);
+	CU_ASSERT_PTR_NOT_NULL(cache);
+	bcache_destroy(cache);
+}
+
+CU_TestInfo bcache_list[] = {
+	{ (char*)"create", test_create },
+	CU_TEST_INFO_NULL
+};

test/unit/run.c

@@ -13,6 +13,7 @@
 	.pTests = n##_list }
 
 CU_SuiteInfo suites[] = {
+	USE(bcache),
 	USE(bitset),
 	USE(config),
 	USE(dmlist),

test/unit/units.h

@@ -23,6 +23,7 @@
 	int n ## _init(void); \
 	int n ## _fini(void);
 
+DECL(bcache);
 DECL(bitset);
 DECL(config);
 DECL(dmlist);