5 files changed, 81 insertions, 1 deletions
diff --git a/CMakeLists.txt b/CMakeLists.txt
index 1ee538f..a554edc 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -15,6 +15,7 @@ include("GlibCompileResources")
 include("GNUInstallDirs")
 
 find_package("Gettext" REQUIRED)
+find_package("Intl" REQUIRED)
 find_package("PkgConfig" REQUIRED)
 
 check_ipo_supported(RESULT CAN_DO_IPO LANGUAGES CXX)
diff --git a/lang/CMakeLists.txt b/lang/CMakeLists.txt
index 4bc985c..9ba960b 100644
--- a/lang/CMakeLists.txt
+++ b/lang/CMakeLists.txt
@@ -35,4 +35,18 @@ target_compile_definitions("lang" INTERFACE
   "LOCALEDIR=\"${CMAKE_INSTALL_FULL_LOCALEDIR}\""
 )
 
-add_dependencies("lang" "mofiles")
-\ No newline at end of file
+add_dependencies("lang" "mofiles")
+
+# Tests
+
+add_executable("lang-tests"
+  "tests/translations.cpp"
+)
+
+target_link_libraries("lang-tests" PRIVATE
+  "Catch2::Catch2"
+  
+  "turns::intl-test-main"
+)
+
+catch_discover_tests("lang-tests")
+\ No newline at end of file
diff --git a/lang/tests/translations.cpp b/lang/tests/translations.cpp
new file mode 100644
index 0000000..1bb78a5
--- /dev/null
+++ b/lang/tests/translations.cpp
@@ -0,0 +1,29 @@
+#include <catch2/catch_test_macros.hpp>
+#include <catch2/generators/catch_generators.hpp>
+
+#include <libintl.h>
+
+#include <format>
+#include <string>
+
+TEST_CASE("All supported languages have translations")
+{
+  auto message = GENERATE(
+    "Turns",
+    "Add a participant",
+    "No active turn-order",
+    "_Quit"
+  );
+  
+  auto locale = GENERATE(
+    "de_CH.UTF-8",
+    "de_DE.UTF-8",
+    "de_AT.UTF-8"
+  );
+
+  SECTION(std::format("'{}' has a translation in '{}'", message, locale))
+  {
+    setlocale(LC_ALL, locale);
+    REQUIRE(std::string{gettext(message)} != message);
+  }
+}
diff --git a/test_support/CMakeLists.txt b/test_support/CMakeLists.txt
index fe30782..bb2ae4f 100644
--- a/test_support/CMakeLists.txt
+++ b/test_support/CMakeLists.txt
@@ -1,5 +1,7 @@
 get_target_property(TRANSLATIONS_BINARY_DIR "lang" BINARY_DIR)
 
+# GTK test support
+
 add_library("test_support-gtk" OBJECT
   "src/gtk_main.cpp"
 )
@@ -20,3 +22,24 @@ target_link_libraries("test_support-gtk" PUBLIC
   "PkgConfig::adwaita"
   "PkgConfig::gtkmm"
 )
+
+# Intl test support
+
+add_library("test_support-intl" OBJECT
+  "src/intl_main.cpp"
+)
+
+add_library("turns::intl-test-main" ALIAS "test_support-intl")
+
+target_compile_features("test_support-intl" PRIVATE
+  "cxx_std_23"
+)
+
+target_compile_definitions("test_support-intl" PUBLIC
+  "TESTLOCALEDIR=\"${TRANSLATIONS_BINARY_DIR}\""
+)
+
+target_link_libraries("test_support-intl" PUBLIC
+  "Intl::Intl"
+  "turns::lang"
+)
diff --git a/test_support/src/intl_main.cpp b/test_support/src/intl_main.cpp
new file mode 100644
index 0000000..4a74ac5
--- /dev/null
+++ b/test_support/src/intl_main.cpp
@@ -0,0 +1,13 @@
+#include <catch2/catch_session.hpp>
+
+#include <libintl.h>
+
+auto main(int argc, char * argv[]) -> int
+{
+  setlocale(LC_ALL, "");
+  bindtextdomain("turns", TESTLOCALEDIR);
+  bind_textdomain_codeset("turns", "UTF-8");
+  textdomain("turns");
+
+  return Catch::Session().run(argc, argv);
+}
+\ No newline at end of file