Xcode: Add unit test for iOS project install (#12506)

Tests/RunCMake/XcodeProject/RunCMakeTest.cmake

@@ -11,6 +11,20 @@ endif()
 # Use a single build tree for a few tests without cleaning.
 
 if(NOT XCODE_VERSION VERSION_LESS 5)
+  set(RunCMake_TEST_BINARY_DIR ${RunCMake_BINARY_DIR}/XcodeInstallIOS-build)
+  set(RunCMake_TEST_NO_CLEAN 1)
+  set(RunCMake_TEST_OPTIONS "-DCMAKE_INSTALL_PREFIX:PATH=${RunCMake_BINARY_DIR}/ios_install")
+
+  file(REMOVE_RECURSE "${RunCMake_TEST_BINARY_DIR}")
+  file(MAKE_DIRECTORY "${RunCMake_TEST_BINARY_DIR}")
+
+  run_cmake(XcodeInstallIOS)
+  run_cmake_command(XcodeInstallIOS-install ${CMAKE_COMMAND} --build . --target install)
+
+  unset(RunCMake_TEST_BINARY_DIR)
+  unset(RunCMake_TEST_NO_CLEAN)
+  unset(RunCMake_TEST_OPTIONS)
+
   set(RunCMake_TEST_BINARY_DIR ${RunCMake_BINARY_DIR}/XcodeBundlesOSX-build)
   set(RunCMake_TEST_NO_CLEAN 1)
   set(RunCMake_TEST_OPTIONS "-DTEST_IOS=OFF")

Tests/RunCMake/XcodeProject/XcodeInstallIOS-install-stdout.txt

+-- Install configuration: .*
+-- Installing: .*/ios_install/lib/libfoo.a

Tests/RunCMake/XcodeProject/XcodeInstallIOS.cmake

+cmake_minimum_required(VERSION 2.8.5)
+
+project(XcodeInstallIOS)
+
+set(CMAKE_OSX_SYSROOT iphoneos)
+set(XCODE_ATTRIBUTE_CODE_SIGNING_REQUIRED "NO")
+set(CMAKE_XCODE_ATTRIBUTE_ENABLE_BITCODE "NO")
+
+set(CMAKE_OSX_ARCHITECTURES "armv7;i386")
+
+add_library(foo STATIC foo.cpp)
+install(TARGETS foo ARCHIVE DESTINATION lib)

Tests/RunCMake/XcodeProject/foo.cpp

+void foo() { }