1 files changed, 40 insertions, 0 deletions
diff --git a/src/tools/clippy/tests/workspace.rs b/src/tools/clippy/tests/workspace.rs
index c9cbc5054..699ab2be1 100644
--- a/src/tools/clippy/tests/workspace.rs
+++ b/src/tools/clippy/tests/workspace.rs
@@ -7,6 +7,46 @@ use test_utils::{CARGO_CLIPPY_PATH, IS_RUSTC_TEST_SUITE};
 mod test_utils;
 
 #[test]
+fn test_module_style_with_dep_in_subdir() {
+    if IS_RUSTC_TEST_SUITE {
+        return;
+    }
+    let root = PathBuf::from(env!("CARGO_MANIFEST_DIR"));
+    let target_dir = root.join("target").join("workspace_test");
+    let cwd = root.join("tests/workspace_test");
+
+    // Make sure we start with a clean state
+    Command::new("cargo")
+        .current_dir(&cwd)
+        .env("CARGO_TARGET_DIR", &target_dir)
+        .arg("clean")
+        .args(["-p", "pass-no-mod-with-dep-in-subdir"])
+        .args(["-p", "pass-mod-with-dep-in-subdir"])
+        .output()
+        .unwrap();
+
+    // [#8887](https://github.com/rust-lang/rust-clippy/issues/8887)
+    // `mod.rs` checks should not be applied to crate dependencies
+    // located in the subdirectory of workspace
+    let output = Command::new(&*CARGO_CLIPPY_PATH)
+        .current_dir(&cwd)
+        .env("CARGO_INCREMENTAL", "0")
+        .env("CARGO_TARGET_DIR", &target_dir)
+        .arg("clippy")
+        .args(["-p", "pass-no-mod-with-dep-in-subdir"])
+        .args(["-p", "pass-mod-with-dep-in-subdir"])
+        .arg("--")
+        .arg("-Cdebuginfo=0") // disable debuginfo to generate less data in the target dir
+        .output()
+        .unwrap();
+
+    println!("status: {}", output.status);
+    println!("stdout: {}", String::from_utf8_lossy(&output.stdout));
+    println!("stderr: {}", String::from_utf8_lossy(&output.stderr));
+    assert!(output.status.success());
+}
+
+#[test]
 fn test_no_deps_ignores_path_deps_in_workspaces() {
     if IS_RUSTC_TEST_SUITE {
         return;