[era] era_superblock_t and era_check

unit-tests/Makefile.in

@@ -59,6 +59,7 @@ TEST_SOURCE=\
 	unit-tests/cache_superblock_t.cc \
 	unit-tests/damage_tracker_t.cc \
 	unit-tests/endian_t.cc \
+	unit-tests/era_superblock_t.cc \
 	unit-tests/rmap_visitor_t.cc \
 	unit-tests/run_set_t.cc \
 	unit-tests/space_map_t.cc \

unit-tests/era_superblock_t.cc

@@ -0,0 +1,112 @@
+#include "gmock/gmock.h"
+#include "base/bits.h"
+#include "era/superblock.h"
+
+using namespace base;
+using namespace era;
+using namespace superblock_damage;
+using namespace testing;
+
+//----------------------------------------------------------------
+
+namespace {
+	unsigned const NR_METADATA_BLOCKS = 100;
+
+	class damage_visitor_mock : public damage_visitor {
+	public:
+		MOCK_METHOD1(visit, void (superblock_corrupt const &));
+		MOCK_METHOD1(visit, void (superblock_invalid const &));
+	};
+
+	class EraSuperblockTests : public Test {
+	public:
+		EraSuperblockTests() {
+			sb_.bloom_tree_root = 1;
+			sb_.era_array_root = 2;
+		}
+
+		void check() {
+			check_superblock(sb_, NR_METADATA_BLOCKS, visitor_);
+		}
+
+		void check_invalid() {
+			EXPECT_CALL(visitor_, visit(Matcher<superblock_invalid const &>(_))).Times(1);
+			check();
+		}
+
+		damage_visitor_mock visitor_;
+		superblock sb_;
+	};
+}
+
+//----------------------------------------------------------------
+
+TEST_F(EraSuperblockTests, default_constructed_superblock_is_valid)
+{
+	check();
+}
+
+TEST_F(EraSuperblockTests, clean_shutdown_flag_is_valid)
+{
+	sb_.flags.set_flag(superblock_flags::CLEAN_SHUTDOWN);
+	check();
+}
+
+TEST_F(EraSuperblockTests, unhandled_flags_get_set_correctly_and_is_invalid)
+{
+	uint32_t bad_flag = 1 << 12;
+	sb_.flags = superblock_flags(bad_flag | 1);
+	ASSERT_THAT(sb_.flags.get_unhandled_flags(), Eq(bad_flag));
+	check_invalid();
+}
+
+TEST_F(EraSuperblockTests, blocknr_is_in_range)
+{
+	sb_.blocknr = NR_METADATA_BLOCKS;
+	check_invalid();
+}
+
+TEST_F(EraSuperblockTests, magic_is_checked)
+{
+	sb_.magic = 12345;
+	check_invalid();
+}
+
+TEST_F(EraSuperblockTests, version_gt_1_is_checked)
+{
+	sb_.version = 2;
+	check_invalid();
+}
+
+TEST_F(EraSuperblockTests, version_lt_1_is_checked)
+{
+	sb_.version = 0;
+	check_invalid();
+}
+
+TEST_F(EraSuperblockTests, metadata_block_size_checked)
+{
+	sb_.metadata_block_size = 16;
+	check_invalid();
+}
+
+TEST_F(EraSuperblockTests, bloom_tree_root_isnt_0)
+{
+	sb_.bloom_tree_root = 0;
+	check_invalid();
+}
+
+TEST_F(EraSuperblockTests, era_array_root_isnt_0)
+{
+	sb_.era_array_root = 0;
+	check_invalid();
+}
+
+TEST_F(EraSuperblockTests, bloom_root_isnt_era_array_root)
+{
+	sb_.bloom_tree_root = 10;
+	sb_.era_array_root = 10;
+	check_invalid();
+}
+
+//----------------------------------------------------------------