From 1dc4d5b15ef59513cc9895a7bef17000b68da74e Mon Sep 17 00:00:00 2001
From: Steve Karolewics <skarolewics@gmail.com>
Date: Mon, 3 Feb 2020 12:39:36 -0500
Subject: [PATCH] Display the demos UI if argv[1] isn't a valid test

---
 util/test/demos/main.cpp | 18 ++++++++++++++++--
 1 file changed, 16 insertions(+), 2 deletions(-)

diff --git a/util/test/demos/main.cpp b/util/test/demos/main.cpp
index ca9796508..71d1247f7 100644
--- a/util/test/demos/main.cpp
+++ b/util/test/demos/main.cpp
@@ -328,14 +328,28 @@ Usage: %s Test_Name [test_options]
     return 1;
   }
 
-  std::string testchoice;
+  // Check if the first arg is a valid test name. If it isn't,
+  // allow the UI to appear, so that flags can be used with the UI
+  bool validTestArg = false;
+  if(argc >= 2)
+  {
+    for(const TestMetadata &test : tests)
+    {
+      if(!strcmp(test.Name, argv[1]))
+      {
+        validTestArg = true;
+        break;
+      }
+    }
+  }
 
+  std::string testchoice;
   if(tests.size() == 1)
   {
     // if there's only one test we've probably hardcoded this for a repro. Launch it
     testchoice = tests[0].Name;
   }
-  else if(argc >= 2)
+  else if(validTestArg)
   {
     testchoice = argv[1];
   }