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-rw-r--r--src/bootstrap/src/utils/shared_helpers.rs22
-rw-r--r--src/bootstrap/src/utils/tests/mod.rs4
-rw-r--r--src/bootstrap/src/utils/tests/shared_helpers_tests.rs (renamed from src/bootstrap/src/utils/shared_helpers/tests.rs)7
-rw-r--r--src/ci/docker/host-x86_64/pr-check-1/Dockerfile1
4 files changed, 23 insertions, 11 deletions
diff --git a/src/bootstrap/src/utils/shared_helpers.rs b/src/bootstrap/src/utils/shared_helpers.rs
index 9c6b4a7615d..9428e221f41 100644
--- a/src/bootstrap/src/utils/shared_helpers.rs
+++ b/src/bootstrap/src/utils/shared_helpers.rs
@@ -1,14 +1,18 @@
 //! This module serves two purposes:
-//!     1. It is part of the `utils` module and used in other parts of bootstrap.
-//!     2. It is embedded inside bootstrap shims to avoid a dependency on the bootstrap library.
-//!        Therefore, this module should never use any other bootstrap module. This reduces binary
-//!        size and improves compilation time by minimizing linking time.
+//!
+//! 1. It is part of the `utils` module and used in other parts of bootstrap.
+//! 2. It is embedded inside bootstrap shims to avoid a dependency on the bootstrap library.
+//!    Therefore, this module should never use any other bootstrap module. This reduces binary size
+//!    and improves compilation time by minimizing linking time.
+
+// # Note on tests
+//
+// If we were to declare a tests submodule here, the shim binaries that include this module via
+// `#[path]` would fail to find it, which breaks `./x check bootstrap`. So instead the unit tests
+// for this module are in `super::tests::shared_helpers_tests`.
 
 #![allow(dead_code)]
 
-#[cfg(test)]
-mod tests;
-
 use std::env;
 use std::ffi::OsString;
 use std::fs::OpenOptions;
@@ -16,10 +20,6 @@ use std::io::Write;
 use std::process::Command;
 use std::str::FromStr;
 
-// If we were to declare a tests submodule here, the shim binaries that include this
-// module via `#[path]` would fail to find it, which breaks `./x check bootstrap`.
-// So instead the unit tests for this module are in `super::tests::shared_helpers_tests`.
-
 /// Returns the environment variable which the dynamic library lookup path
 /// resides in for this platform.
 pub fn dylib_path_var() -> &'static str {
diff --git a/src/bootstrap/src/utils/tests/mod.rs b/src/bootstrap/src/utils/tests/mod.rs
index ec87e71e0b6..983680b0385 100644
--- a/src/bootstrap/src/utils/tests/mod.rs
+++ b/src/bootstrap/src/utils/tests/mod.rs
@@ -12,6 +12,10 @@ use crate::{Build, Config, Flags, t};
 
 pub mod git;
 
+// Note: tests for `shared_helpers` is separate here, as otherwise shim binaries that include the
+// `shared_helpers` via `#[path]` would fail to find it, breaking `./x check bootstrap`.
+mod shared_helpers_tests;
+
 /// Holds temporary state of a bootstrap test.
 /// Right now it is only used to redirect the build directory of the bootstrap
 /// invocation, in the future it would be great if we could actually execute
diff --git a/src/bootstrap/src/utils/shared_helpers/tests.rs b/src/bootstrap/src/utils/tests/shared_helpers_tests.rs
index 559e9f70abd..c486e65007e 100644
--- a/src/bootstrap/src/utils/shared_helpers/tests.rs
+++ b/src/bootstrap/src/utils/tests/shared_helpers_tests.rs
@@ -1,3 +1,10 @@
+//! The `shared_helpers` module can't have its own tests submodule, because that would cause
+//! problems for the shim binaries that include it via `#[path]`, so instead those unit tests live
+//! here.
+//!
+//! To prevent tidy from complaining about this file not being named `tests.rs`, it lives inside a
+//! submodule directory named `tests`.
+
 use crate::utils::shared_helpers::parse_value_from_args;
 
 #[test]
diff --git a/src/ci/docker/host-x86_64/pr-check-1/Dockerfile b/src/ci/docker/host-x86_64/pr-check-1/Dockerfile
index d3c3cd1b63e..f7d51fba861 100644
--- a/src/ci/docker/host-x86_64/pr-check-1/Dockerfile
+++ b/src/ci/docker/host-x86_64/pr-check-1/Dockerfile
@@ -40,6 +40,7 @@ COPY host-x86_64/pr-check-1/validate-toolstate.sh /scripts/
 # We disable optimized compiler built-ins because that requires a C toolchain for the target.
 # We also skip the x86_64-unknown-linux-gnu target as it is well-tested by other jobs.
 ENV SCRIPT \
+  python3 ../x.py check bootstrap && \
   /scripts/check-default-config-profiles.sh && \
   python3 ../x.py build src/tools/build-manifest && \
   python3 ../x.py test --stage 0 src/tools/compiletest && \