DEV-39537: Moved the toHTTPDateString tests into llhttpdate_tut.cpp,

as a more appropriate home. Also made use of the skip() method rather
than use printf() - thanks to tofu for the suggestion.

indra/test/llhttpdate_tut.cpp

@@ -37,6 +37,9 @@
 #include "lldate.h"
 #include "llframetimer.h"
 
+#include <time.h>
+#include <locale.h>
+
 namespace tut
 {
     struct httpdate_data
@@ -94,4 +97,70 @@ namespace tut
         // probably not a good idea to use strcmp but this is just a unit test
         ensure("Current time in RFC 1123", (strcmp(expected, actual.c_str()) == 0));
     }
+
+	void test_date_string(const std::string &locale, struct tm *t,
+						  const std::string &fmt, const std::string &expected)
+	{
+		std::string result = LLDate::toHTTPDateString(t, fmt);
+		LLStringUtil::toLower(result);
+		std::string label = std::string("toHTTPDateString - ") + locale;
+		ensure_equals(label.c_str(), result, expected);
+	}
+
+	template<> template<>
+	void httpdate_object::test<4>()
+	{
+		// test localization of http dates
+#if LL_WINDOWS
+		const char *en_locale = "english";
+		const char *fr_locale = "french";
+#else
+		const char *en_locale = "en_GB.UTF-8";
+		const char *fr_locale = "fr_FR.UTF-8";
+#endif
+
+		std::string prev_locale = LLStringUtil::getLocale();
+		std::string prev_clocale = std::string(setlocale(LC_TIME, NULL));
+		time_t test_time = 1252374030;  // 8 Sep 2009 01:40:01
+		struct tm *t = gmtime(&test_time);
+
+		setlocale(LC_TIME, en_locale);
+		if (strcmp(setlocale(LC_TIME, NULL), en_locale) != 0)
+		{
+			setlocale(LC_TIME, prev_clocale.c_str());
+			skip("Cannot set English locale");
+		}
+
+		LLStringUtil::setLocale(en_locale);
+		test_date_string(en_locale, t, "%d %B %Y - %H:%M", "08 september 2009 - 01:40");
+		test_date_string(en_locale, t, "%H", "01");
+		test_date_string(en_locale, t, "%M", "40");
+		test_date_string(en_locale, t, "%I", "01");
+		test_date_string(en_locale, t, "%d", "08");
+		test_date_string(en_locale, t, "%Y", "2009");
+		test_date_string(en_locale, t, "%p", "am");
+		test_date_string(en_locale, t, "%A", "tuesday");
+		test_date_string(en_locale, t, "%B", "september");
+
+		setlocale(LC_TIME, fr_locale);
+		if (strcmp(setlocale(LC_TIME, NULL), fr_locale) != 0)
+		{
+			LLStringUtil::setLocale(prev_locale);
+			setlocale(LC_TIME, prev_clocale.c_str());
+			skip("Cannot set French locale");
+		}
+
+		LLStringUtil::setLocale(fr_locale);
+		test_date_string(fr_locale, t, "%d %B %Y - %H:%M", "08 septembre 2009 - 01:40");
+		test_date_string(fr_locale, t, "%H", "01");
+		test_date_string(fr_locale, t, "%M", "40");
+		test_date_string(fr_locale, t, "%I", "01");
+		test_date_string(fr_locale, t, "%d", "08");
+		test_date_string(fr_locale, t, "%Y", "2009");
+		test_date_string(fr_locale, t, "%A", "mardi");
+		test_date_string(fr_locale, t, "%B", "septembre");
+
+		LLStringUtil::setLocale(prev_locale);
+		setlocale(LC_TIME, prev_clocale.c_str());
+	}
 }