--- /dev/null
+" Simplistic testing of Arabic mode.
+
+if !has('arabic')
+ finish
+endif
+
+set encoding=utf-8
+scriptencoding utf-8
+
+" Return list of utf8 sequences of each character at line lnum.
+" Combining characters are treated as a single item.
+func GetCharsUtf8(lnum)
+ call cursor(a:lnum, 1)
+ let chars = []
+ let numchars = strchars(getline('.'), 1)
+ for i in range(1, numchars)
+ exe 'norm ' i . '|'
+ call add(chars, execute('norm g8'))
+ endfor
+ return chars
+endfunc
+
+func Test_arabic_toggle()
+ set arabic
+ call assert_equal(1, &rightleft)
+ call assert_equal(1, &arabicshape)
+ call assert_equal('arabic', &keymap)
+ call assert_equal(1, &delcombine)
+
+ set iminsert=1 imsearch=1
+ set arabic&
+ call assert_equal(0, &rightleft)
+ call assert_equal(1, &arabicshape)
+ call assert_equal('arabic', &keymap)
+ call assert_equal(1, &delcombine)
+ call assert_equal(0, &iminsert)
+ call assert_equal(-1, &imsearch)
+
+ set arabicshape& keymap= delcombine&
+endfunc
+
+func Test_arabic_input()
+ new
+ set arabic
+ " Typing sghl in Arabic insert mode should show the
+ " Arabic word 'Salaam' i.e. 'peace'.
+ call feedkeys('isghl', 'tx')
+ redraw
+ call assert_equal([
+ \ "\nd8 b3 ",
+ \ "\nd9 84 + d8 a7 ",
+ \ "\nd9 85 "], GetCharsUtf8(1))
+
+ " Without shaping, it should give individual Arabic letters.
+ set noarabicshape
+ redraw
+ call assert_equal([
+ \ "\nd8 b3 ",
+ \ "\nd9 84 ",
+ \ "\nd8 a7 ",
+ \ "\nd9 85 "], GetCharsUtf8(1))
+
+ set arabicshape&
+ set arabic&
+ bwipe!
+endfunc
+
+func Test_arabic_toggle_keymap()
+ new
+ set arabic
+ call feedkeys("i12\<C-^>12\<C-^>12", 'tx')
+ redraw
+ call assert_equal('١٢12١٢', getline('.'))
+ set arabic&
+ bwipe!
+endfunc
+
+func Test_delcombine()
+ new
+ set arabic
+ call feedkeys("isghl\<BS>\<BS>", 'tx')
+ redraw
+ call assert_equal(["\nd8 b3 ", "\nd9 84 "], GetCharsUtf8(1))
+
+ " Now the same with nodelcombine
+ set nodelcombine
+ %d
+ call feedkeys("isghl\<BS>\<BS>", 'tx')
+ call assert_equal(["\nd8 b3 "], GetCharsUtf8(1))
+ set arabic&
+ bwipe!
+endfunc