Tests: Update Swift tests to use CMP0157 NEW behavior
Fixing failing tests caused by introduction of new policy + warning when
the policy is not set.
diff --git a/Tests/RunCMake/CheckCompilerFlag/CheckCompilerFlagSwift.cmake b/Tests/RunCMake/CheckCompilerFlag/CheckCompilerFlagSwift.cmake
index 23b3006..c85783d 100644
--- a/Tests/RunCMake/CheckCompilerFlag/CheckCompilerFlagSwift.cmake
+++ b/Tests/RunCMake/CheckCompilerFlag/CheckCompilerFlagSwift.cmake
@@ -1,3 +1,4 @@
+cmake_policy(SET CMP0157 NEW)
enable_language (Swift)
include(CheckCompilerFlag)
diff --git a/Tests/RunCMake/CheckSourceCompiles/CheckSourceCompilesSwift.cmake b/Tests/RunCMake/CheckSourceCompiles/CheckSourceCompilesSwift.cmake
index 767fa69..8edff2c 100644
--- a/Tests/RunCMake/CheckSourceCompiles/CheckSourceCompilesSwift.cmake
+++ b/Tests/RunCMake/CheckSourceCompiles/CheckSourceCompilesSwift.cmake
@@ -1,3 +1,4 @@
+cmake_policy(SET CMP0157 NEW)
enable_language(Swift)
include(CheckSourceCompiles)
diff --git a/Tests/RunCMake/Swift/IncrementalSwift.cmake b/Tests/RunCMake/Swift/IncrementalSwift.cmake
index 092269f..08f3fff 100644
--- a/Tests/RunCMake/Swift/IncrementalSwift.cmake
+++ b/Tests/RunCMake/Swift/IncrementalSwift.cmake
@@ -1,3 +1,4 @@
+cmake_policy(SET CMP0157 NEW)
enable_language(Swift)
# Write initial files to build directory
diff --git a/Tests/RunCMake/Swift/NoWorkToDo.cmake b/Tests/RunCMake/Swift/NoWorkToDo.cmake
index 51c2ff3..02b9195 100644
--- a/Tests/RunCMake/Swift/NoWorkToDo.cmake
+++ b/Tests/RunCMake/Swift/NoWorkToDo.cmake
@@ -1,3 +1,4 @@
+cmake_policy(SET CMP0157 NEW)
enable_language(Swift)
add_executable(hello1 hello.swift)
set_target_properties(hello1 PROPERTIES ENABLE_EXPORTS TRUE)
diff --git a/Tests/RunCMake/Swift/Win32ExecutableIgnored.cmake b/Tests/RunCMake/Swift/Win32ExecutableIgnored.cmake
index 02d5447..5e52911 100644
--- a/Tests/RunCMake/Swift/Win32ExecutableIgnored.cmake
+++ b/Tests/RunCMake/Swift/Win32ExecutableIgnored.cmake
@@ -1,3 +1,4 @@
+cmake_policy(SET CMP0157 NEW)
enable_language(Swift)
add_executable(E E.swift)
set_target_properties(E PROPERTIES
