Move /src/test to /tests

tests/ui/for-loop-while/foreach-external-iterators-nested.rs

@@ -0,0 +1,15 @@
+// run-pass
+
+pub fn main() {
+    let x = [1; 100];
+    let y = [2; 100];
+    let mut p = 0;
+    let mut q = 0;
+    for i in &x[..] {
+        for j in &y[..] {
+            p += *j;
+        }
+        q += *i + p;
+    }
+    assert_eq!(q, 1010100);
+}