Add ui test emit-output-types-without-args.rs

Signed-off-by: xizheyin <[email protected]>

Author: xizheyin

tests/ui/invalid-compile-flags/emit-output-types-without-args.rs

@@ -0,0 +1 @@
+//@ compile-flags: --emit

tests/ui/invalid-compile-flags/emit-output-types-without-args.stderr

@@ -0,0 +1,6 @@
+error: Argument to option 'emit' missing
+       Usage:
+           --emit [asm|llvm-bc|llvm-ir|obj|metadata|link|dep-info|mir]
+                               Comma separated list of types of output for the
+                               compiler to emit
+