Move zero-sized-vec-push test

library/alloc/tests/vec.rs

@@ -1912,3 +1912,20 @@ fn new() -> C<'a> {
     c3.refs.v[0].set(Some(&c1));
     c3.refs.v[1].set(Some(&c2));
 }
+
+#[test]
+fn test_zero_sized_vec_push() {
+    const N: usize = 8;
+
+    for len in 0..N {
+        let mut tester = Vec::with_capacity(len);
+        assert_eq!(tester.len(), 0);
+        assert!(tester.capacity() >= len);
+        for _ in 0..len {
+            tester.push(());
+        }
+        assert_eq!(tester.len(), len);
+        assert_eq!(tester.iter().count(), len);
+        tester.clear();
+    }
+}

src/test/ui/zero-sized/zero-sized-vec-push.rs

@@ -1,20 +0,0 @@
-// run-pass
-#![allow(unused_variables)]
-use std::iter::Iterator;
-use std::vec::Vec;
-
-fn main() {
-    const N: usize = 8;
-
-    for len in 0..N {
-        let mut tester = Vec::with_capacity(len);
-        assert_eq!(tester.len(), 0);
-        assert!(tester.capacity() >= len);
-        for bit in 0..len {
-            tester.push(());
-        }
-        assert_eq!(tester.len(), len);
-        assert_eq!(tester.iter().count(), len);
-        tester.clear();
-    }
-}