From d9195ab081b9c23a96d5a9c1b8e8be4da4f6e976 Mon Sep 17 00:00:00 2001
From: Brad King <brad.king@kitware.com>
Date: Mon, 26 Nov 2018 08:05:13 -0500
Subject: Tests: Teach run_ctest to handle removal of CTestConfig.cmake

When running tests in a non-fresh build tree there may be files left
from previous test runs.  In the case that a test removes
`CTestConfig.cmake.in`, we must remove any `CTestConfig.cmake` that
may have been left behind.
---
 Tests/RunCMake/RunCTest.cmake | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/Tests/RunCMake/RunCTest.cmake b/Tests/RunCMake/RunCTest.cmake
index c2c31d1..98fdf20 100644
--- a/Tests/RunCMake/RunCTest.cmake
+++ b/Tests/RunCMake/RunCTest.cmake
@@ -6,6 +6,8 @@ function(run_ctest CASE_NAME)
   if(EXISTS "${RunCMake_SOURCE_DIR}/CTestConfig.cmake.in")
     configure_file(${RunCMake_SOURCE_DIR}/CTestConfig.cmake.in
                    ${RunCMake_BINARY_DIR}/${CASE_NAME}/CTestConfig.cmake @ONLY)
+  else()
+    file(REMOVE ${RunCMake_BINARY_DIR}/${CASE_NAME}/CTestConfig.cmake)
   endif()
   configure_file(${RunCMake_SOURCE_DIR}/CMakeLists.txt.in
                  ${RunCMake_BINARY_DIR}/${CASE_NAME}/CMakeLists.txt @ONLY)
-- 
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