time: Add tests for Minguo calendar [BZ #24293]

Co-authored-by: Rafal Luzynski <digitalfreak@lingonborough.com>
Reviewed-by: Carlos O'Donell <carlos@redhat.com>

ChangeLog:

	[BZ #24293]
	* time/Makefile (LOCALES): Add zh_TW.UTF-8, cmn_TW.UTF-8,
	hak_TW.UTF-8, nan_TW.UTF-8, and lzh_TW.UTF-8.
	* time/tst-strftime2.c (locales): Likewise.
	(dates): Add 1910-04-01, 1911-12-31, 1912-01-01, 1913-04-01,
	2010-04-01, and 2011-04-01.
	(mkreftable): Add rules for the new locales and the new dates.

ChangeLog

@@ -7,6 +7,14 @@
 	(mkreftable): Minor improvements to simplify maintenance.
 	(do_test): Reflect the changes in dates array.
 
+	[BZ #24293]
+	* time/Makefile (LOCALES): Add zh_TW.UTF-8, cmn_TW.UTF-8,
+	hak_TW.UTF-8, nan_TW.UTF-8, and lzh_TW.UTF-8.
+	* time/tst-strftime2.c (locales): Likewise.
+	(dates): Add 1910-04-01, 1911-12-31, 1912-01-01, 1913-04-01,
+	2010-04-01, and 2011-04-01.
+	(mkreftable): Add rules for the new locales and the new dates.
+
 2019-04-01  Carlos O'Donell  <carlos@redhat.com>
 
 	* localedata/locales/ja_JP: Add comments to era entries.

time/Makefile

@@ -50,7 +50,9 @@ include ../Rules
 ifeq ($(run-built-tests),yes)
 LOCALES := de_DE.ISO-8859-1 en_US.ISO-8859-1 ja_JP.EUC-JP fr_FR.UTF-8 \
 	   es_ES.UTF-8 pl_PL.UTF-8 ru_RU.UTF-8 \
-	   ja_JP.UTF-8 lo_LA.UTF-8 th_TH.UTF-8
+	   ja_JP.UTF-8 lo_LA.UTF-8 th_TH.UTF-8 \
+	   zh_TW.UTF-8 cmn_TW.UTF-8 hak_TW.UTF-8 \
+	   nan_TW.UTF-8 lzh_TW.UTF-8
 include ../gen-locales.mk
 
 $(objpfx)tst-ftime_l.out: $(gen-locales)

time/tst-strftime2.c

@@ -29,13 +29,16 @@
 
 static const char *locales[] =
 {
-  "ja_JP.UTF-8", "lo_LA.UTF-8", "th_TH.UTF-8"
+  "ja_JP.UTF-8", "lo_LA.UTF-8", "th_TH.UTF-8",
+  "zh_TW.UTF-8", "cmn_TW.UTF-8", "hak_TW.UTF-8",
+  "nan_TW.UTF-8", "lzh_TW.UTF-8"
 };
 
 /* Must match locale index into locales array.  */
 enum
 {
-  ja_JP, lo_LA, th_TH
+  ja_JP, lo_LA, th_TH,
+  zh_TW, cmn_TW, hak_TW, nan_TW, lzh_TW
 };
 
 static const char *formats[] = { "%EY", "%_EY", "%-EY" };
@@ -47,12 +50,18 @@ typedef struct
 
 static const date_t dates[] =
 {
+  {  1,  4, 1910 },
+  { 31, 12, 1911 },
+  {  1,  1, 1912 },
+  {  1,  4, 1913 },
   {  1,  4, 1988 },
   {  7,  1, 1989 },
   {  8,  1, 1989 },
   {  1,  4, 1990 },
   {  1,  4, 1997 },
-  {  1,  4, 1998 }
+  {  1,  4, 1998 },
+  {  1,  4, 2010 },
+  {  1,  4, 2011 }
 };
 
 static char ref[array_length (locales)][array_length (formats)]
@@ -81,12 +90,21 @@ mkreftable (void)
   /* Japanese era year to be checked.  */
   static const int yrj[] =
   {
-    63, 64, 1, 2, 9, 10
+    43, 44, 45, 2,
+    63, 64, 1, 2, 9, 10, 22, 23
   };
   /* Buddhist calendar year to be checked.  */
   static const int yrb[] =
   {
-    2531, 2532, 2532, 2533, 2540, 2541
+    2453, 2454, 2455, 2456,
+    2531, 2532, 2532, 2533, 2540, 2541, 2553, 2554
+  };
+  /* R.O.C. calendar year to be checked.  Negative number is prior to
+     Minguo counting up.  */
+  static const int yrc[] =
+  {
+    -2, -1, 1, 2,
+    77, 78, 78, 79, 86, 87, 99, 100
   };
 
   for (i = 0; i < array_length (locales); i++)
@@ -95,14 +113,23 @@ mkreftable (void)
 	{
 	  if (i == ja_JP)
 	    {
-	      era = (is_before (k, 8, 1, 1989)) ? "\u662d\u548c"
+	      era = (is_before (k, 30,  7, 1912)) ? "\u660e\u6cbb"
-						: "\u5e73\u6210";
+		  : (is_before (k, 25, 12, 1926)) ? "\u5927\u6b63"
+		  : (is_before (k,  8,  1, 1989)) ? "\u662d\u548c"
+						  : "\u5e73\u6210";
 	      yr = yrj[k], sfx = "\u5e74";
 	    }
 	  else if (i == lo_LA)
 	    era = "\u0e9e.\u0eaa. ", yr = yrb[k], sfx = "";
 	  else if (i == th_TH)
 	    era = "\u0e1e.\u0e28. ", yr = yrb[k], sfx = "";
+	  else if (i == zh_TW || i == cmn_TW || i == hak_TW
+		   || i == nan_TW || i == lzh_TW)
+	    {
+	      era = (is_before (k, 1, 1, 1912)) ? "\u6c11\u524d"
+						: "\u6c11\u570b";
+	      yr = yrc[k], sfx = "\u5e74";
+	    }
 	  else
 	    FAIL_EXIT1 ("Invalid table index!");
 	  if (yr == 1)