Check in the pristine copy of ICU 4.6...

icu46/source/test/testdata/test4.ucm

Index: icu46/source/test/testdata/test4.ucm
===================================================================
--- icu46/source/test/testdata/test4.ucm	(revision 0)
+++ icu46/source/test/testdata/test4.ucm	(revision 0)
@@ -0,0 +1,64 @@
+# *******************************************************************************
+# * Copyright (C) 2001-2003, International Business Machines
+# * Corporation and others.  All Rights Reserved.
+# *******************************************************************************
+#
+# test4.ucm
+#
+# Test file for MBCS conversion with four-byte codepage data.
+
+<code_set_name>     "test4"
+<mb_cur_max>        4
+<mb_cur_min>        1
+<uconv_class>       "MBCS"
+
+# both subchars are single-byters, which does not make sense
+# but works - adding subchar1 for tests but don't want to
+# change old tests for a new subchar -- markus 20031028
+<subchar>           \xff
+<subchar1>          \xe1
+<icu:state>         0, 1:1, 5-9, e1, ff
+<icu:state>         2:2
+<icu:state>         3:3
+<icu:state>         a-f.p, ff
+
+CHARMAP
+
+# fromUnicode result is zero byte from other than U+0000
+<U20ac>     \x00 |0
+
+# fallback from non-zero to zero possible with extension table
+<U20ad>     \x00 |1
+
+# nothing special
+<U0005>     \x05 |0
+
+# toUnicode result is fallback direct
+<U0006>     \x06 |3
+
+# toUnicode result is direct non-BMP code point
+<U101234>   \x07 |0
+<Ufebcd>    \x08 |3
+
+#unassigned \x09
+
+# toUnicode result is surrogate pair: test real pair, single unit, unassigned
+<U23456>    \x01\x02\x03\x0a |0
+<U000b>     \x01\x02\x03\x0b |0
+#unassigned \x01\x02\x03\x0c
+<U34567>    \x01\x02\x03\x0d |3
+<U000e>     \x01\x02\x03\x0e |3
+#unassigned \x01\x02\x03\x0f
+
+# <subchar1> non-mapping
+<U50005>    \xe1 |2
+# add a mapping that turns the above's Unicode side into a prefix
+<U50005><U60006> \x06 |1
+
+# many bytes, and bytes per UChar
+<U30ab><U309a> \x01\x02\x03\x0a\x01\x02\x03\x0b\x01\x02\x03\x0c\x01\x02\x03\x0d\x01\x02\x03\x0e\x01\x02\x03\x0f\x01\x02\x03\x0a\x05\x06\x07 |0
+
+# many UChars, and UChars per byte
+<U304b><U309a><U304d><U309a><U304f><U309a><U3051><U309a><U3053><U309a><U30ab><U309a><U30ad><U309a><U30af><U309a><U30b1><U309a><U0300> \x08\x09 |0
+
+END CHARMAP