Auto merge of #103795 - thomcc:untest, r=Mark-Simulacrum

Include both benchmarks and tests in the numbers given to `TeFiltered{,Out}`

Fixes #103794

`#[bench]` is broken on nightly without this, sadly. It apparently has no test coverage. In addition to manually testing, I've added a run-make smokecheck for this (which would have caught the issue), but it would be nice to have a better way to test, err, libtest. For now we should get this in ASAP IMO

library/test/src/lib.rs

@@ -246,6 +246,9 @@ impl FilteredTests {
         }));
         self.add_test(desc, testfn);
     }
+    fn total_len(&self) -> usize {
+        self.tests.len() + self.benchs.len()
+    }
 }
 
 pub fn run_tests<F>(
@@ -303,13 +306,13 @@ where
         };
     }
 
-    let filtered_out = tests_len - filtered.tests.len();
+    let filtered_out = tests_len - filtered.total_len();
     let event = TestEvent::TeFilteredOut(filtered_out);
     notify_about_test_event(event)?;
 
     let shuffle_seed = get_shuffle_seed(opts);
 
-    let event = TestEvent::TeFiltered(filtered.tests.len(), shuffle_seed);
+    let event = TestEvent::TeFiltered(filtered.total_len(), shuffle_seed);
     notify_about_test_event(event)?;
 
     let concurrency = opts.test_threads.unwrap_or_else(get_concurrency);

src/test/run-make/test-benches/Makefile

@@ -0,0 +1,11 @@
+include ../../run-make-fulldeps/tools.mk
+
+# ignore-cross-compile
+
+all:
+	# Smoke-test that `#[bench]` isn't entirely broken.
+	$(RUSTC) --test smokebench.rs -O
+	$(call RUN,smokebench --bench)
+	$(call RUN,smokebench --bench noiter)
+	$(call RUN,smokebench --bench yesiter)
+	$(call RUN,smokebench)

src/test/run-make/test-benches/smokebench.rs

@@ -0,0 +1,14 @@
+#![feature(test)]
+extern crate test;
+
+#[bench]
+fn smoke_yesiter(b: &mut test::Bencher) {
+    let mut i = 0usize;
+    b.iter(|| {
+        i = i.wrapping_add(1);
+        i
+    })
+}
+
+#[bench]
+fn smoke_noiter(_: &mut test::Bencher) {}