1 files changed, 81 insertions, 0 deletions
diff --git a/qa/src/tztest.c b/qa/src/tztest.c
new file mode 100644
index 0000000..b5c6c2a
--- /dev/null
+++ b/qa/src/tztest.c
@@ -0,0 +1,81 @@
+#include <stdio.h>
+#include <time.h>
+#include <stdlib.h>
+#include <pcp/pmapi.h>
+#include <pcp/impl.h>
+
+char * __pmTimezone(void);
+
+int main()
+{
+    time_t sept = (30*365.25+244)*24*3600; /* 1 Septemnber 2000 */
+    time_t march = (30*365.25+60)*24*3600; /* 1 March 2000 */
+
+    /* Two sets of timezone strings - one works for the first half
+     * of the year, another for the second. Make sure that in the case
+     * where we cannot reduce the timezone string and have to re-write it
+     * same timezone is choosen */
+    char *zones[][8] = {
+    {
+	"ABC-10",
+	"ABC-10:01:02XYZ-11:03:04,M12.5.0/3:04:05,M7.1.0/2:06:07",
+	"ABC-10:00:00XYZ-11:00:00,M12.5.0/3:00:00,M7.5.0/2:00:00",
+	"ABC-10XYZ-11,M12.5.0/3:00:00,M7.1.0/2:00:00",
+	"ABC-10XYZ-11,M12.5.0/3:01:02,M7.1.0/2:03:04",
+	"ABC-10",
+	":Someplace/Somewhere",
+	NULL
+    },
+    {
+	"ABC-10",
+	"XYZ-11:03:04ABC-10:01:02,M12.5.0/3:04:05,M7.1.0/2:06:07",
+	"ABC-10:00:00XYZ-11:00:00,M12.5.0/3:00:00,M7.5.0/2:00:00",
+	"ABC-10XYZ-11,M12.5.0/3:00:00,M7.1.0/2:00:00",
+	"XYZ-11ABC-10,M12.5.0/3:01:02,M7.1.0/2:03:04",
+	"ABC-10",
+	":Someplace/Somewhere",
+	NULL
+    }};
+    char * tz = getenv("TZ");
+
+    if (tz == NULL) {
+	puts("Timezone is not set, abort the test");
+    } else {
+	int i;
+	time_t now = time(NULL);
+	struct tm * today = localtime(&now);
+	int which = today->tm_mon / 6;
+	char tb[256];
+	char * newtz = __pmTimezone();
+
+	printf("%s -> %s\n", tz, newtz);
+
+	for (i=0; zones[which][i] != NULL; i++) {
+	    char * tz;
+	    struct tm  *tmp;
+	    char tstr[64];
+	    int dst;
+
+	    sprintf(tb, "TZ=%s", zones[which][i]);
+	    putenv(tb);
+	    tzset();
+	    tz = getenv("TZ");
+            newtz = __pmTimezone();
+
+            printf("%s -> %s\n", tz, newtz);
+	    tmp = localtime(&march);
+	    dst = tmp->tm_isdst;
+
+            strftime(tstr, 64, "%d %B %Y %H:%M %Z", tmp);
+	    printf("In March daylight saving is %s, and the time is %s\n",
+		(dst ? "on" : "off"), tstr);
+	    tmp = localtime(&sept);
+	    dst = tmp->tm_isdst;
+            strftime(tstr, 64, "%d %B %Y %H:%M %Z", tmp);
+	    printf("In September daylight saving is %s, and the time is %s\n\n",
+		(dst ? "on" : "off"), tstr);
+	}
+    }
+    
+    return 0;
+}