FetchContent: Add tests

1 files changed, 75 insertions, 0 deletions

diff --git a/Tests/RunCMake/FetchContent/VarDefinitions.cmake b/Tests/RunCMake/FetchContent/VarDefinitions.cmake
new file mode 100644
index 0000000..4d2a929
--- /dev/null
+++ b/Tests/RunCMake/FetchContent/VarDefinitions.cmake
@@ -0,0 +1,75 @@
+unset(FETCHCONTENT_FULLY_DISCONNECTED CACHE)
+unset(FETCHCONTENT_UPDATES_DISCONNECTED CACHE)
+unset(FETCHCONTENT_QUIET CACHE)
+unset(FETCHCONTENT_BASE_DIR CACHE)
+
+include(FetchContent)
+
+# Each of the cache entries should be defined and have the
+# expected value. Be careful to check unset separately from a
+# false value, since unset also equates to false.
+if(FETCHCONTENT_FULLY_DISCONNECTED STREQUAL "")
+  message(FATAL_ERROR "FETCHCONTENT_FULLY_DISCONNECTED not defined")
+elseif(FETCHCONTENT_FULLY_DISCONNECTED)
+  message(FATAL_ERROR "FETCHCONTENT_FULLY_DISCONNECTED not defaulted to OFF")
+endif()
+
+if(FETCHCONTENT_UPDATES_DISCONNECTED STREQUAL "")
+  message(FATAL_ERROR "FETCHCONTENT_UPDATES_DISCONNECTED not defined")
+elseif(FETCHCONTENT_UPDATES_DISCONNECTED)
+  message(FATAL_ERROR "FETCHCONTENT_UPDATES_DISCONNECTED not defaulted to OFF")
+endif()
+
+if(FETCHCONTENT_QUIET STREQUAL "")
+  message(FATAL_ERROR "FETCHCONTENT_QUIET not defined")
+elseif(NOT FETCHCONTENT_QUIET)
+  message(FATAL_ERROR "FETCHCONTENT_QUIET not defaulted to ON")
+endif()
+
+if(NOT FETCHCONTENT_BASE_DIR STREQUAL "${CMAKE_BINARY_DIR}/_deps")
+  message(FATAL_ERROR "FETCHCONTENT_BASE_DIR has default value: "
+          "${FETCHCONTENT_BASE_DIR}\n  Expected: ${CMAKE_BINARY_DIR}/_deps")
+endif()
+
+file(REMOVE_RECURSE ${FETCHCONTENT_BASE_DIR}/t1-subbuild)
+
+# Use uppercase T1 test name to confirm conversion to lowercase
+# for the t1_... variable names that get set
+FetchContent_Declare(
+  T1
+  DOWNLOAD_COMMAND ${CMAKE_COMMAND} -E echo "Download command executed"
+)
+FetchContent_Populate(T1)
+
+# Be careful to check both regular and cache variables. Since they have
+# the same name, we can only confirm them separately by using get_property().
+get_property(srcRegVarSet VARIABLE PROPERTY t1_SOURCE_DIR SET)
+get_property(bldRegVarSet VARIABLE PROPERTY t1_BINARY_DIR SET)
+
+get_property(srcCacheVarSet CACHE t1_SOURCE_DIR PROPERTY VALUE SET)
+get_property(bldCacheVarSet CACHE t1_BINARY_DIR PROPERTY VALUE SET)
+
+if(NOT srcRegVarSet)
+  message(FATAL_ERROR "t1_SOURCE_DIR regular variable not set")
+endif()
+if(NOT bldRegVarSet)
+  message(FATAL_ERROR "t1_BINARY_DIR regular variable not set")
+endif()
+if(srcCacheVarSet)
+  message(FATAL_ERROR "t1_SOURCE_DIR cache variable unexpectedly set")
+endif()
+if(bldCacheVarSet)
+  message(FATAL_ERROR "t1_BINARY_DIR cache variable unexpectedly set")
+endif()
+
+set(srcRegVar ${t1_SOURCE_DIR})
+set(bldRegVar ${t1_BINARY_DIR})
+
+if(NOT srcRegVar STREQUAL "${CMAKE_BINARY_DIR}/_deps/t1-src")
+  message(FATAL_ERROR "Unexpected t1_SOURCE_DIR value: ${srcRegVar}\n"
+                      "  Expected: ${CMAKE_BINARY_DIR}/_deps/t1-src")
+endif()
+if(NOT bldRegVar STREQUAL "${CMAKE_BINARY_DIR}/_deps/t1-build")
+  message(FATAL_ERROR "Unexpected t1_BINARY_DIR value: ${bldRegVar}\n"
+                      "  Expected: ${CMAKE_BINARY_DIR}/_deps/t1-build")
+endif()