patch 8.1.1838: there is :spellwrong and :spellgood but not :spellrare
Problem: There is :spellwrong and :spellgood but not :spellrare.
Solution: Add :spellrare. (Martin Tournoij, closes #4291)
diff --git a/src/testdir/test_spellfile.vim b/src/testdir/test_spellfile.vim
new file mode 100644
index 0000000..53eca84
--- /dev/null
+++ b/src/testdir/test_spellfile.vim
@@ -0,0 +1,172 @@
+" Test for commands that operate on the spellfile.
+
+source shared.vim
+source check.vim
+
+CheckFeature spell
+CheckFeature syntax
+
+func Test_spell_normal()
+ new
+ call append(0, ['1 good', '2 goood', '3 goood'])
+ set spell spellfile=./Xspellfile.add spelllang=en
+ let oldlang=v:lang
+ lang C
+
+ " Test for zg
+ 1
+ norm! ]s
+ call assert_equal('2 goood', getline('.'))
+ norm! zg
+ 1
+ let a=execute('unsilent :norm! ]s')
+ call assert_equal('1 good', getline('.'))
+ call assert_equal('search hit BOTTOM, continuing at TOP', a[1:])
+ let cnt=readfile('./Xspellfile.add')
+ call assert_equal('goood', cnt[0])
+
+ " Test for zw
+ 2
+ norm! $zw
+ 1
+ norm! ]s
+ call assert_equal('2 goood', getline('.'))
+ let cnt=readfile('./Xspellfile.add')
+ call assert_equal('#oood', cnt[0])
+ call assert_equal('goood/!', cnt[1])
+
+ " Test for :spellrare
+ spellrare rare
+ let cnt=readfile('./Xspellfile.add')
+ call assert_equal(['#oood', 'goood/!', 'rare/?'], cnt)
+
+ " Make sure :spellundo works for rare words.
+ spellundo rare
+ let cnt=readfile('./Xspellfile.add')
+ call assert_equal(['#oood', 'goood/!', '#are/?'], cnt)
+
+ " Test for zg in visual mode
+ let a=execute('unsilent :norm! V$zg')
+ call assert_equal("Word '2 goood' added to ./Xspellfile.add", a[1:])
+ 1
+ norm! ]s
+ call assert_equal('3 goood', getline('.'))
+ let cnt=readfile('./Xspellfile.add')
+ call assert_equal('2 goood', cnt[3])
+ " Remove "2 good" from spellfile
+ 2
+ let a=execute('unsilent norm! V$zw')
+ call assert_equal("Word '2 goood' added to ./Xspellfile.add", a[1:])
+ let cnt=readfile('./Xspellfile.add')
+ call assert_equal('2 goood/!', cnt[4])
+
+ " Test for zG
+ let a=execute('unsilent norm! V$zG')
+ call assert_match("Word '2 goood' added to .*", a)
+ let fname=matchstr(a, 'to\s\+\zs\f\+$')
+ let cnt=readfile(fname)
+ call assert_equal('2 goood', cnt[0])
+
+ " Test for zW
+ let a=execute('unsilent norm! V$zW')
+ call assert_match("Word '2 goood' added to .*", a)
+ let cnt=readfile(fname)
+ call assert_equal('# goood', cnt[0])
+ call assert_equal('2 goood/!', cnt[1])
+
+ " Test for zuW
+ let a=execute('unsilent norm! V$zuW')
+ call assert_match("Word '2 goood' removed from .*", a)
+ let cnt=readfile(fname)
+ call assert_equal('# goood', cnt[0])
+ call assert_equal('# goood/!', cnt[1])
+
+ " Test for zuG
+ let a=execute('unsilent norm! $zG')
+ call assert_match("Word 'goood' added to .*", a)
+ let cnt=readfile(fname)
+ call assert_equal('# goood', cnt[0])
+ call assert_equal('# goood/!', cnt[1])
+ call assert_equal('goood', cnt[2])
+ let a=execute('unsilent norm! $zuG')
+ let cnt=readfile(fname)
+ call assert_match("Word 'goood' removed from .*", a)
+ call assert_equal('# goood', cnt[0])
+ call assert_equal('# goood/!', cnt[1])
+ call assert_equal('#oood', cnt[2])
+ " word not found in wordlist
+ let a=execute('unsilent norm! V$zuG')
+ let cnt=readfile(fname)
+ call assert_match("", a)
+ call assert_equal('# goood', cnt[0])
+ call assert_equal('# goood/!', cnt[1])
+ call assert_equal('#oood', cnt[2])
+
+ " Test for zug
+ call delete('./Xspellfile.add')
+ 2
+ let a=execute('unsilent norm! $zg')
+ let cnt=readfile('./Xspellfile.add')
+ call assert_equal('goood', cnt[0])
+ let a=execute('unsilent norm! $zug')
+ call assert_match("Word 'goood' removed from \./Xspellfile.add", a)
+ let cnt=readfile('./Xspellfile.add')
+ call assert_equal('#oood', cnt[0])
+ " word not in wordlist
+ let a=execute('unsilent norm! V$zug')
+ call assert_match('', a)
+ let cnt=readfile('./Xspellfile.add')
+ call assert_equal('#oood', cnt[0])
+
+ " Test for zuw
+ call delete('./Xspellfile.add')
+ 2
+ let a=execute('unsilent norm! Vzw')
+ let cnt=readfile('./Xspellfile.add')
+ call assert_equal('2 goood/!', cnt[0])
+ let a=execute('unsilent norm! Vzuw')
+ call assert_match("Word '2 goood' removed from \./Xspellfile.add", a)
+ let cnt=readfile('./Xspellfile.add')
+ call assert_equal('# goood/!', cnt[0])
+ " word not in wordlist
+ let a=execute('unsilent norm! $zug')
+ call assert_match('', a)
+ let cnt=readfile('./Xspellfile.add')
+ call assert_equal('# goood/!', cnt[0])
+
+ " add second entry to spellfile setting
+ set spellfile=./Xspellfile.add,./Xspellfile2.add
+ call delete('./Xspellfile.add')
+ 2
+ let a=execute('unsilent norm! $2zg')
+ let cnt=readfile('./Xspellfile2.add')
+ call assert_match("Word 'goood' added to ./Xspellfile2.add", a)
+ call assert_equal('goood', cnt[0])
+
+ " Test for :spellgood!
+ let temp = execute(':spe!0/0')
+ call assert_match('Invalid region', temp)
+ let spellfile = matchstr(temp, 'Invalid region nr in \zs.*\ze line \d: 0')
+ call assert_equal(['# goood', '# goood/!', '#oood', '0/0'], readfile(spellfile))
+
+ " Test for :spellrare!
+ :spellrare! raare
+ call assert_equal(['# goood', '# goood/!', '#oood', '0/0', 'raare/?'], readfile(spellfile))
+ call delete(spellfile)
+
+ " clean up
+ exe "lang" oldlang
+ call delete("./Xspellfile.add")
+ call delete("./Xspellfile2.add")
+ call delete("./Xspellfile.add.spl")
+ call delete("./Xspellfile2.add.spl")
+
+ " zux -> no-op
+ 2
+ norm! $zux
+ call assert_equal([], glob('Xspellfile.add',0,1))
+ call assert_equal([], glob('Xspellfile2.add',0,1))
+
+ set spellfile=
+ bw!
+endfunc