Rollup merge of #136642 - bjorn3:separate_alloctest_crate, r=cuviper

Put the alloc unit tests in a separate alloctests package

Same rationale as https://github.com/rust-lang/rust/pull/135937. This PR has some extra complexity though as a decent amount of tests are testing internal implementation details rather than the public api. As such I opted to include the modules containing the types under test using `#[path]` into the alloctests package. This means that those modules still need `#[cfg(test)]`, but the rest of liballoc no longer need it.

1 files changed, 3 insertions, 0 deletions

diff --git a/library/alloctests/testing/mod.rs b/library/alloctests/testing/mod.rs
new file mode 100644
index 00000000000..c8457daf93e
--- /dev/null
+++ b/library/alloctests/testing/mod.rs
@@ -0,0 +1,3 @@
+pub(crate) mod crash_test;
+pub(crate) mod ord_chaos;
+pub(crate) mod rng;