Add test

test/CMakeLists.txt

@@ -106,6 +106,10 @@ add_fmt_test(printf-test)
 add_fmt_test(ranges-test)
 add_fmt_test(scan-test)
 
+
+add_fmt_test(enforce-compiletime-test)
+target_compile_definitions(enforce-compiletime-test PRIVATE "-DFMT_ENFORCE_COMPILE_STRING")
+
 if (NOT DEFINED MSVC_STATIC_RUNTIME AND MSVC)
   foreach (flag_var
 			 CMAKE_CXX_FLAGS CMAKE_CXX_FLAGS_DEBUG CMAKE_CXX_FLAGS_RELEASE

test/enforce-compiletime-test.cc

@@ -0,0 +1,29 @@
+// Formatting library for C++ - formatting library tests
+//
+// Copyright (c) 2012 - present, Victor Zverovich
+// All rights reserved.
+//
+// For the license information refer to format.h.
+
+
+#ifdef WIN32
+#  define _CRT_SECURE_NO_WARNINGS
+#endif
+
+#include "fmt/chrono.h"
+#include "fmt/format.h"
+
+#include "gmock.h"
+#include "gtest-extra.h"
+
+#ifndef FMT_STATIC_THOUSANDS_SEPARATOR
+
+TEST(ChronoTest, FormatDefault) {
+  EXPECT_EQ("42s", fmt::format(FMT_STRING("{}"), std::chrono::seconds(42)));
+}
+
+TEST(ChronoTest, FormatWide) {
+  EXPECT_EQ(L"42s", fmt::format(FMT_STRING(L"{}"), std::chrono::seconds(42)));
+}
+
+#endif  // FMT_STATIC_THOUSANDS_SEPARATOR