Add test unit, see the issue #6

tests/generate-calendar.py

@@ -0,0 +1,26 @@
+#!/usr/bin/python3
+
+import sys
+sys.path.append('../')
+from pyIslam.hijri import HijriDate
+
+
+year = 1
+hi = HijriDate(year, 1, 1)
+days = list()
+days.append(list())
+
+while hi.year < 1435:
+    next_hi = hi.nextDate()
+    if next_hi.year != hi.year:
+        days.append(list())
+
+    if next_hi.isLast():
+        days[next_hi.year - year].append \
+        ('%04d-%02d = %d' % (next_hi.year, next_hi.month, next_hi.day))
+
+    del hi
+    hi = next_hi
+
+for day in days:
+    print(day)