Utility: test corrade_add_resource() with Unicode filenames.

Causes CMake with Ninja+MSVC to go into an infinite loop, MinGW fails
during build. Wow.

Author: mosra

src/Corrade/Utility/Test/CMakeLists.txt

@@ -163,11 +163,18 @@ corrade_add_test(UtilityUnicodeTest UnicodeTest.cpp LIBRARIES CorradeUtilityTest
 corrade_add_resource(ResourceTestData ResourceTestFiles/resources.conf)
 corrade_add_resource(ResourceTestEmptyFileData ResourceTestFiles/resources-empty-file.conf)
 corrade_add_resource(ResourceTestNothingData ResourceTestFiles/resources-nothing.conf)
+
+# CMake < 3.1 can't handle UTF-8 in file(STRINGS)
+if(NOT CMAKE_VERSION VERSION_LESS 3.1)
+    corrade_add_resource(ResourceTestUtf8Data ResourceTestFiles/hýždě.conf)
+endif()
+
 corrade_add_test(UtilityResourceTest
     ResourceTest.cpp
     ${ResourceTestData}
     ${ResourceTestEmptyFileData}
     ${ResourceTestNothingData}
+    ${ResourceTestUtf8Data}
     LIBRARIES CorradeUtilityTestLib
     FILES
         ResourceTestFiles/compiled.cpp
@@ -195,6 +202,11 @@ corrade_add_test(UtilityResourceTest
         ResourceTestFiles/resources-overriden-nonexistent-file.conf)
 target_include_directories(UtilityResourceTest PRIVATE ${CMAKE_CURRENT_BINARY_DIR})
 
+# CMake < 3.1 can't handle UTF-8 in file(STRINGS), disable relevant test case
+if(CMAKE_VERSION VERSION_LESS 3.1)
+    target_compile_definitions(UtilityResourceTest PRIVATE "RESOURCETETST_NO_UNICODE")
+endif()
+
 # Static lib resource test
 add_library(ResourceTestDataLib STATIC ${ResourceTestData})
 target_link_libraries(ResourceTestDataLib CorradeUtility)

src/Corrade/Utility/Test/ResourceTest.cpp

@@ -56,6 +56,7 @@ struct ResourceTest: TestSuite::Tester {
     void getEmptyFile();
     void getNonexistent();
     void getNothing();
+    void getUtf8Filename();
 
     void overrideGroup();
     void overrideGroupFallback();
@@ -83,6 +84,7 @@ ResourceTest::ResourceTest() {
               &ResourceTest::getEmptyFile,
               &ResourceTest::getNonexistent,
               &ResourceTest::getNothing,
+              &ResourceTest::getUtf8Filename,
 
               &ResourceTest::overrideGroup,
               &ResourceTest::overrideGroupFallback,
@@ -239,6 +241,17 @@ void ResourceTest::getNothing() {
     CORRADE_VERIFY(r.get("nonexistentFile").empty());
 }
 
+void ResourceTest::getUtf8Filename() {
+    #ifdef RESOURCETETST_NO_UNICODE
+    CORRADE_SKIP("CMake < 3.1 used, can't test compilation of resources with UTF-8 filenames.");
+    #else
+    Resource r("unicode");
+    CORRADE_COMPARE_AS(r.get("hýždě.bin"),
+        Directory::join(RESOURCE_TEST_DIR, "hýždě.bin"),
+        TestSuite::Compare::StringToFile);
+    #endif
+}
+
 void ResourceTest::overrideGroup() {
     std::ostringstream out;
     Debug redirectDebug{&out};