Disable message boxes on assertion failures.

format_test.cc

@@ -751,3 +751,15 @@ TEST(ActiveFormatterTest, Example) {
   std::string path = "somefile";
   ReportError("File not found: {0}") << path;
 }
+
+int main(int argc, char **argv) {
+#ifdef _WIN32
+  // Disable message boxes on assertion failures.
+  _CrtSetReportMode(_CRT_ERROR, _CRTDBG_MODE_FILE | _CRTDBG_MODE_DEBUG);
+  _CrtSetReportFile(_CRT_ERROR, _CRTDBG_FILE_STDERR);
+  _CrtSetReportMode(_CRT_ASSERT, _CRTDBG_MODE_FILE | _CRTDBG_MODE_DEBUG);
+  _CrtSetReportFile(_CRT_ASSERT, _CRTDBG_FILE_STDERR);
+#endif
+  testing::InitGoogleTest(&argc, argv);
+  return RUN_ALL_TESTS();
+}