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+" Tests for case-insensitive UTF-8 comparisons (utf_strnicmp() in mbyte.c)
+" Also test "g~ap".
+
+func Ch(a, op, b, expected)
+ call assert_equal(eval(printf('"%s" %s "%s"', a:a, a:op, a:b)), a:expected,
+ \ printf('"%s" %s "%s" should return %d', a:a, a:op, a:b, a:expected))
+endfunc
+
+func Chk(a, b, result)
+ if a:result == 0
+ call Ch(a:a, '==?', a:b, 1)
+ call Ch(a:a, '!=?', a:b, 0)
+ call Ch(a:a, '<=?', a:b, 1)
+ call Ch(a:a, '>=?', a:b, 1)
+ call Ch(a:a, '<?', a:b, 0)
+ call Ch(a:a, '>?', a:b, 0)
+ elseif a:result > 0
+ call Ch(a:a, '==?', a:b, 0)
+ call Ch(a:a, '!=?', a:b, 1)
+ call Ch(a:a, '<=?', a:b, 0)
+ call Ch(a:a, '>=?', a:b, 1)
+ call Ch(a:a, '<?', a:b, 0)
+ call Ch(a:a, '>?', a:b, 1)
+ else
+ call Ch(a:a, '==?', a:b, 0)
+ call Ch(a:a, '!=?', a:b, 1)
+ call Ch(a:a, '<=?', a:b, 1)
+ call Ch(a:a, '>=?', a:b, 0)
+ call Ch(a:a, '<?', a:b, 1)
+ call Ch(a:a, '>?', a:b, 0)
+ endif
+endfunc
+
+func Check(a, b, result)
+ call Chk(a:a, a:b, a:result)
+ call Chk(a:b, a:a, -a:result)
+endfunc
+
+func LT(a, b)
+ call Check(a:a, a:b, -1)
+endfunc
+
+func GT(a, b)
+ call Check(a:a, a:b, 1)
+endfunc
+
+func EQ(a, b)
+ call Check(a:a, a:b, 0)
+endfunc
+
+func Test_comparisons()
+ call EQ('', '')
+ call LT('', 'a')
+ call EQ('abc', 'abc')
+ call EQ('Abc', 'abC')
+ call LT('ab', 'abc')
+ call LT('AB', 'abc')
+ call LT('ab', 'aBc')
+ call EQ('\xd0\xb9\xd1\x86\xd1\x83\xd0\xba\xd0\xb5\xd0\xbd', '\xd0\xb9\xd0\xa6\xd0\xa3\xd0\xba\xd0\x95\xd0\xbd')
+ call LT('\xd0\xb9\xd1\x86\xd1\x83\xd0\xba\xd0\xb5\xd0\xbd', '\xd0\xaf\xd1\x86\xd1\x83\xd0\xba\xd0\xb5\xd0\xbd')
+ call EQ('\xe2\x84\xaa', 'k')
+ call LT('\xe2\x84\xaa', 'kkkkkk')
+ call EQ('\xe2\x84\xaa\xe2\x84\xaa\xe2\x84\xaa', 'kkk')
+ call LT('kk', '\xe2\x84\xaa\xe2\x84\xaa\xe2\x84\xaa')
+ call EQ('\xe2\x84\xaa\xe2\x84\xa6k\xe2\x84\xaak\xcf\x89', 'k\xcf\x89\xe2\x84\xaakk\xe2\x84\xa6')
+ call EQ('Abc\x80', 'AbC\x80')
+ call LT('Abc\x80', 'AbC\x81')
+ call LT('Abc', 'AbC\x80')
+ call LT('abc\x80DEF', 'abc\x80def') " case folding stops at the first bad character
+ call LT('\xc3XYZ', '\xc3xyz')
+ call EQ('\xef\xbc\xba', '\xef\xbd\x9a') " FF3A (upper), FF5A (lower)
+ call GT('\xef\xbc\xba', '\xef\xbc\xff') " first string is ok and equals \xef\xbd\x9a after folding, second string is illegal and was left unchanged, then the strings were bytewise compared
+ call LT('\xc3', '\xc3\x83')
+ call EQ('\xc3\xa3xYz', '\xc3\x83XyZ')
+ for n in range(0x60, 0xFF)
+ call LT(printf('xYz\x%.2X', n-1), printf('XyZ\x%.2X', n))
+ endfor
+ for n in range(0x80, 0xBF)
+ call EQ(printf('xYz\xc2\x%.2XUvW', n), printf('XyZ\xc2\x%.2XuVw', n))
+ endfor
+ for n in range(0xC0, 0xFF)
+ call LT(printf('xYz\xc2\x%.2XUvW', n), printf('XyZ\xc2\x%.2XuVw', n))
+ endfor
+endfunc
+
+" test that g~ap changes one paragraph only.
+func Test_gap()
+ new
+ " setup text
+ call feedkeys("iabcd\<cr>\<cr>defg", "tx")
+ " modify only first line
+ call feedkeys("gg0g~ap", "tx")
+ call assert_equal(["ABCD", "", "defg"], getline(1,3))
+endfunc
+
+" vim: shiftwidth=2 sts=2 expandtab