get_filename_component: Add explicit unit tests

Add test RunCMake.get_filename_component to cover cases of the command.
Remove redundant coverage of these cases from the "complex" tests.

6 files changed, 45 insertions, 0 deletions

diff --git a/Tests/RunCMake/get_filename_component/CMakeLists.txt b/Tests/RunCMake/get_filename_component/CMakeLists.txt
new file mode 100644
index 0000000..e8db6b0
--- /dev/null
+++ b/Tests/RunCMake/get_filename_component/CMakeLists.txt
@@ -0,0 +1,3 @@
+cmake_minimum_required(VERSION 2.8)
+project(${RunCMake_TEST} NONE)
+include(${RunCMake_TEST}.cmake)
diff --git a/Tests/RunCMake/get_filename_component/KnownComponents.cmake b/Tests/RunCMake/get_filename_component/KnownComponents.cmake
new file mode 100644
index 0000000..d5becc0
--- /dev/null
+++ b/Tests/RunCMake/get_filename_component/KnownComponents.cmake
@@ -0,0 +1,32 @@
+macro(check desc actual expect)
+  if(NOT "x${actual}" STREQUAL "x${expect}")
+    message(SEND_ERROR "${desc}: got \"${actual}\", not \"${expect}\"")
+  endif()
+endmacro()
+
+set(filename "/path/to/filename.ext.in")
+set(expect_PATH "/path/to")
+set(expect_NAME "filename.ext.in")
+set(expect_EXT ".ext.in")
+set(expect_NAME_WE "filename")
+foreach(c PATH NAME EXT NAME_WE)
+  get_filename_component(actual_${c} "${filename}" ${c})
+  check("${c}" "${actual_${c}}" "${expect_${c}}")
+endforeach()
+
+get_filename_component(test_slashes "c:\\path\\to\\filename.ext.in" PATH)
+check("PATH from backslashes" "${test_slashes}" "c:/path/to")
+
+get_filename_component(test_winroot "c:\\filename.ext.in" PATH)
+check("PATH in windows root" "${test_winroot}" "c:/")
+
+get_filename_component(test_absolute "/path/to/a/../filename.ext.in" ABSOLUTE)
+check("ABSOLUTE" "${test_absolute}" "/path/to/filename.ext.in")
+
+get_filename_component(test_cache "/path/to/filename.ext.in" PATH CACHE)
+check("CACHE 1" "${test_cache}" "/path/to")
+get_filename_component(test_cache "/path/to/other/filename.ext.in" PATH CACHE)
+check("CACHE 2" "${test_cache}" "/path/to")
+unset(test_cache CACHE)
+get_filename_component(test_cache "/path/to/other/filename.ext.in" PATH CACHE)
+check("CACHE 3" "${test_cache}" "/path/to/other")
diff --git a/Tests/RunCMake/get_filename_component/RunCMakeTest.cmake b/Tests/RunCMake/get_filename_component/RunCMakeTest.cmake
new file mode 100644
index 0000000..156fc8f
--- /dev/null
+++ b/Tests/RunCMake/get_filename_component/RunCMakeTest.cmake
@@ -0,0 +1,4 @@
+include(RunCMake)
+
+run_cmake(KnownComponents)
+run_cmake(UnknownComponent)
diff --git a/Tests/RunCMake/get_filename_component/UnknownComponent-result.txt b/Tests/RunCMake/get_filename_component/UnknownComponent-result.txt
new file mode 100644
index 0000000..d00491f
--- /dev/null
+++ b/Tests/RunCMake/get_filename_component/UnknownComponent-result.txt
@@ -0,0 +1 @@
+1
diff --git a/Tests/RunCMake/get_filename_component/UnknownComponent-stderr.txt b/Tests/RunCMake/get_filename_component/UnknownComponent-stderr.txt
new file mode 100644
index 0000000..b146e5b
--- /dev/null
+++ b/Tests/RunCMake/get_filename_component/UnknownComponent-stderr.txt
@@ -0,0 +1,4 @@
+CMake Error at UnknownComponent.cmake:1 \(get_filename_component\):
+  get_filename_component unknown component BOGUS
+Call Stack \(most recent call first\):
+  CMakeLists.txt:[0-9]+ \(include\)
diff --git a/Tests/RunCMake/get_filename_component/UnknownComponent.cmake b/Tests/RunCMake/get_filename_component/UnknownComponent.cmake
new file mode 100644
index 0000000..06abc51
--- /dev/null
+++ b/Tests/RunCMake/get_filename_component/UnknownComponent.cmake
@@ -0,0 +1 @@
+get_filename_component(var "/path/to/filename.ext.in" BOGUS)