Move /src/test to /tests

tests/ui/macros/macro-in-expression-context.fixed

@@ -0,0 +1,27 @@
+// run-rustfix
+
+macro_rules! foo {
+    () => {
+        assert_eq!("A", "A");
+        //~^ WARN trailing semicolon in macro
+        //~| WARN this was previously
+        //~| NOTE macro invocations at the end of a block
+        //~| NOTE to ignore the value produced by the macro
+        //~| NOTE for more information
+        //~| NOTE `#[warn(semicolon_in_expressions_from_macros)]` on by default
+        assert_eq!("B", "B");
+    }
+    //~^^ ERROR macro expansion ignores token `assert_eq` and any following
+    //~| NOTE the usage of `foo!` is likely invalid in expression context
+}
+
+fn main() {
+    foo!();
+    //~^ NOTE caused by the macro expansion here
+    //~| NOTE in this expansion
+    //~| NOTE in this expansion
+    //~| NOTE in this expansion
+    //~| NOTE in this expansion
+    //~| NOTE in this expansion
+    //~| NOTE in this expansion
+}