960         let mut blk = TestBlockDeviceBuilder::new()  in read_test_helper()  localVariable
972         blk.read(case.rw_offset, out).unwrap();  in read_test_helper()
976             blk.io.storage  in read_test_helper()
983         assert!(blk.io.num_reads <= READ_WRITE_BLOCKS_UPPER_BOUND);  in read_test_helper()
988         let mut blk = TestBlockDeviceBuilder::new()  in write_test_helper()  localVariable
995         let mut expected = blk.io.storage  in write_test_helper()
1007         write_func(&mut blk, case.rw_offset, data);  in write_test_helper()
1011             blk.io.storage  in write_test_helper()
1042                     let func = |blk: &mut TestBlockDevice, offset: u64, data: &mut [u8]| {
1043                         blk.write(offset, data).unwrap();
1044                         assert!(blk.io.num_reads <= READ_WRITE_BLOCKS_UPPER_BOUND);
1045                         assert!(blk.io.num_writes <= READ_WRITE_BLOCKS_UPPER_BOUND);
1055                     let func = |blk: &mut TestBlockDevice, offset: u64, data: &mut [u8]| {
1056                         blk.write(offset, data).unwrap();
1057                         assert!(blk.io.num_reads <= READ_WRITE_BLOCKS_UPPER_BOUND);
1058                         assert!(blk.io.num_writes <= READ_WRITE_BLOCKS_UPPER_BOUND);
1291         let mut blk = TestBlockDeviceBuilder::new()  in test_no_alignment_require_zero_size_scratch()  localVariable
1297         assert_eq!(required_scratch_size(&mut blk.io, 0).unwrap(), 0);  in test_no_alignment_require_zero_size_scratch()
1305         let mut blk = TestBlockDeviceBuilder::new()  in test_scratch_too_small()  localVariable
1310         assert!(blk.read(0, &mut vec![0u8; block_size.try_into().unwrap()]).is_err());  in test_scratch_too_small()
1315         let mut blk = TestBlockDeviceBuilder::new()  in test_read_overflow()  localVariable
1321         assert!(blk.read(512, &mut vec![0u8; 1]).is_err());  in test_read_overflow()
1322         assert!(blk.read(0, &mut vec![0u8; 513]).is_err());  in test_read_overflow()
1327         let mut blk = TestBlockDeviceBuilder::new()  in test_read_arithmetic_overflow()  localVariable
1333         assert!(blk.read(u64::MAX, &mut vec![0u8; 1]).is_err());  in test_read_arithmetic_overflow()
1338         let mut blk = TestBlockDeviceBuilder::new()  in test_write_overflow()  localVariable
1344         assert!(blk.write(512, vec![0u8; 1].as_mut_slice()).is_err());  in test_write_overflow()
1345         assert!(blk.write(0, vec![0u8; 513].as_mut_slice()).is_err());  in test_write_overflow()
1350         let mut blk = TestBlockDeviceBuilder::new()  in test_write_arithmetic_overflow()  localVariable
1356         assert!(blk.write(u64::MAX, vec![0u8; 1].as_mut_slice()).is_err());  in test_write_arithmetic_overflow()