Auto merge of #10584 - blyxyas:fix-wildcard_imports_testsrs, r=flip1995

fix: `wildcard_imports` ignore `test.rs` files

Adds a check to see if the building crate is a test one, if so, ignore it

---

Closes #10580
changelog:[`wildcard_imports`]: Add a check to ignore files named `test.rs` and `tests.rs`

2 files changed, 24 insertions, 1 deletions

diff --git a/clippy_lints/src/wildcard_imports.rs b/clippy_lints/src/wildcard_imports.rs
index 36f910c983f..a9089fba3c5 100644
--- a/clippy_lints/src/wildcard_imports.rs
+++ b/clippy_lints/src/wildcard_imports.rs
@@ -7,7 +7,7 @@ use rustc_hir::{
     def::{DefKind, Res},
     Item, ItemKind, PathSegment, UseKind,
 };
-use rustc_lint::{LateContext, LateLintPass};
+use rustc_lint::{LateContext, LateLintPass, LintContext};
 use rustc_middle::ty;
 use rustc_session::{declare_tool_lint, impl_lint_pass};
 use rustc_span::symbol::kw;
@@ -117,6 +117,10 @@ impl_lint_pass!(WildcardImports => [ENUM_GLOB_USE, WILDCARD_IMPORTS]);
 
 impl LateLintPass<'_> for WildcardImports {
     fn check_item(&mut self, cx: &LateContext<'_>, item: &Item<'_>) {
+        if cx.sess().is_test_crate() {
+            return;
+        }
+
         if is_test_module_or_function(cx.tcx, item) {
             self.test_modules_deep = self.test_modules_deep.saturating_add(1);
         }
diff --git a/tests/ui/wildcard_imports_cfgtest.rs b/tests/ui/wildcard_imports_cfgtest.rs
new file mode 100644
index 00000000000..203c4e15b50
--- /dev/null
+++ b/tests/ui/wildcard_imports_cfgtest.rs
@@ -0,0 +1,19 @@
+//@compile-flags: --test
+
+#![warn(clippy::wildcard_imports)]
+#![allow(unused, clippy::unnecessary_wraps, clippy::let_unit_value)]
+
+// Test for #10580, the lint should ignore it because of the crate's cfg test flag.
+
+fn foofoo() {}
+
+mod outer {
+    mod inner {
+        use super::super::*;
+        fn barbar() {
+            let _ = foofoo();
+        }
+    }
+}
+
+fn main() {}