Fix import for test_serialize_deserialize

[matthewmcintire-savantx]

This enables cargo test --features serde

[coriolinus]

This appears to work already, without this PR:

$ cargo test --features serde
Sat 30 Sep 2023 08:31:28 PM CEST
   Compiling counter v0.5.7 (/home/coriolinus/projects/coriolinus/counter-rs)
    Finished test [unoptimized + debuginfo] target(s) in 1.00s
     Running unittests src/lib.rs (target/debug/deps/counter-3e80ac4db2116e03)

running 17 tests
test unit_tests::test_add_update_counter ... ok
test unit_tests::test_add_update_iterable ... ok
test unit_tests::test_count_minimal_type ... ok
test unit_tests::test_collect ... ok
test unit_tests::test_creation ... ok
test unit_tests::test_extend_simple ... ok
test unit_tests::test_creation_with_capacity ... ok
test unit_tests::test_extend_tuple ... ok
test unit_tests::test_extend_tuple_with_duplicates ... ok
test unit_tests::test_from_iter_simple ... ok
test unit_tests::test_from_iter_tuple ... ok
test unit_tests::test_from_iter_tuple_with_duplicates ... ok
test unit_tests::test_non_usize_count ... ok
test unit_tests::test_sub_update_iterable ... ok
test unit_tests::test_sub_update_counter ... ok
test unit_tests::test_subtract ... ok
test unit_tests::test_update ... ok

test result: ok. 17 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s

     Running tests/tests.rs (target/debug/deps/tests-d993a04d686964e2)

running 17 tests
test tests::test_delete_key_from_backing_map ... ok
test tests::test_add ... ok
test tests::test_composite_add_sub ... ok
test tests::test_intersection ... ok
test tests::test_k_most_common_ordered ... ok
test tests::test_most_common ... ok
test tests::test_most_common_ordered ... ok
test tests::test_most_common_tiebreaker ... ok
test tests::test_most_common_tiebreaker_fn_mut ... ok
test tests::test_most_common_tiebreaker_reversed ... ok
test tests::test_serialize_deserialize ... ok
test tests::test_sub ... ok
test tests::test_subset_non_usize_count ... ok
test tests::test_superset_non_usize_count ... ok
test tests::test_total ... ok
test tests::test_union ... ok
test tests::test_k_most_common_ordered_heavy ... ok

test result: ok. 17 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.06s

   Doc-tests counter

running 47 tests
test src/impls/extend.rs - impls::extend::Counter<T,N>::extend (line 15) ... ok
test src/impls/add_iterable.rs - impls::add_iterable::Counter<T,N>::add_assign (line 42) ... ok
test src/impls/extend.rs - impls::extend::Counter<T,N>::extend (line 36) ... ok
test src/impls/add_iterable.rs - impls::add_iterable::Counter<T,N>::add (line 18) ... ok
test src/impls/from_iterator.rs - impls::from_iterator::Counter<T,N>::from_iter (line 35) ... ok
test src/impls/add_self.rs - impls::add_self::Counter<T,N>::add (line 19) ... ok
test src/impls/extend.rs - impls::extend::Counter<T,N>::extend (line 61) ... ok
test src/impls/add_self.rs - impls::add_self::Counter<T,N>::add_assign (line 45) ... ok
test src/impls/index.rs - impls::index::Counter<T,N>::index_mut (line 65) ... ok
test src/impls/index.rs - impls::index::Counter<T,N>::index (line 24) ... ok
test src/impls/index.rs - impls::index::Counter<T,N>::index_mut (line 81) ... ok
test src/impls/index.rs - impls::index::Counter<T,N>::index (line 40) ... ok
test src/impls/from_iterator.rs - impls::from_iterator::Counter<T,N>::from_iter (line 58) ... ok
test src/impls/intersection.rs - impls::intersection::Counter<T,N>::bitand (line 19) ... ok
test src/impls/intersection.rs - impls::intersection::Counter<T,N>::bitand_assign (line 53) ... ok
test src/impls/into_iterator.rs - impls::into_iterator::&'amutCounter<T,N>::into_iter (line 59) ... ok
test src/impls/sub_iterable.rs - impls::sub_iterable::Counter<T,N>::sub_assign (line 45) ... ok
test src/impls/into_iterator.rs - impls::into_iterator::Counter<T,N>::into_iter (line 27) ... ok
test src/impls/sub_iterable.rs - impls::sub_iterable::Counter<T,N>::sub (line 18) ... ok
test src/impls/sub_self.rs - impls::sub_self::Counter<T,N>::sub (line 23) ... ok
test src/impls/sub_self.rs - impls::sub_self::Counter<T,N>::sub_assign (line 53) ... ok
test src/impls/union.rs - impls::union::Counter<T,N>::bitor_assign (line 66) ... ok
test src/impls/union.rs - impls::union::Counter<T,N>::bitor (line 19) ... ok
test src/lib.rs - (line 100) ... ok
test src/lib.rs - (line 115) ... ok
test src/lib.rs - (line 126) ... ok
test src/lib.rs - (line 139) ... ok
test src/lib.rs - (line 160) ... ok
test src/lib.rs - (line 194) ... ok
test src/lib.rs - (line 20) ... ok
test src/lib.rs - (line 224) ... ok
test src/lib.rs - (line 207) ... ok
test src/lib.rs - (line 28) ... ok
test src/lib.rs - (line 269) ... ok
test src/lib.rs - (line 35) ... ok
test src/lib.rs - (line 48) ... ok
test src/lib.rs - (line 60) ... ok
test src/lib.rs - (line 74) ... ok
test src/lib.rs - Counter<T,N>::is_subset (line 583) ... ok
test src/lib.rs - Counter<T,N>::is_superset (line 558) ... ok
test src/lib.rs - (line 86) ... ok
test src/lib.rs - Counter<T,N>::k_most_common_ordered (line 477) ... ok
test src/lib.rs - Counter<T,N>::most_common (line 392) ... ok
test src/lib.rs - Counter<T,N>::most_common_tiebreaker (line 412) ... ok
test src/lib.rs - Counter<T,N>::most_common_ordered (line 449) ... ok
test src/lib.rs - Counter<T,N>::subtract (line 358) ... ok
test src/lib.rs - Counter<T,N>::total (line 318) ... ok

test result: ok. 47 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 3.11s

If it is not working for you, may I ask what version of Rust you are using?

[matthewmcintire-savantx]

Great, I didn't try it without it

[matthewmcintire-savantx]

Trying to close the PR