add test case for empty array #450

Job	Run time
Pass MSRV values to other jobs	3s
clippy/stable	22s
format/nightly	14s
nostd/thumbv6m-none-eabi/stable	17s
miri	8m 20s
cross_test/i686-unknown-linux-gnu/stable	1m 30s
docs/nightly	20s
cargo-careful	2m 12s
cross_test/s390x-unknown-linux-gnu/stable	7m 34s
blas-msrv	42s
tests/beta	3m 0s
tests/stable	2m 51s
tests/nightly	3m 14s
tests/1.64.0	3m 41s
conclusion	2s
	34m 22s

Provide feedback