test: add test for deleting last listed buffer when there are floats (#17833)

1 files changed, 37 insertions, 7 deletions

diff --git a/test/functional/ui/float_spec.lua b/test/functional/ui/float_spec.lua
index 7192b95e45..87aa6ffcbe 100644
--- a/test/functional/ui/float_spec.lua
+++ b/test/functional/ui/float_spec.lua
@@ -443,7 +443,7 @@ describe('float window', function()
       before_each(function()
         insert('foo')
       end)
-      describe('when there is only one buffer leaves that window with an empty buffer', function()
+      describe('leaves one window with an empty buffer when there is only one buffer', function()
         before_each(function()
           meths.open_win(old_buf, true, float_opts)
         end)
@@ -461,8 +461,8 @@ describe('float window', function()
           eq(1, #meths.list_wins())
         end)
       end)
-      describe('when there are other buffers closes other windows with that buffer', function()
-        local other_buf, same_buf_win, other_buf_win
+      describe('closes other windows with that buffer when there are other buffers', function()
+        local same_buf_win, other_buf, other_buf_win
         before_each(function()
           same_buf_win = meths.open_win(old_buf, false, float_opts)
           other_buf = meths.create_buf(true, false)
@@ -491,6 +491,35 @@ describe('float window', function()
           meths.buf_delete(old_buf, {force = true})
         end)
       end)
+      describe('creates a new buffer when there is only one listed buffer', function()
+        local same_buf_win, unlisted_buf, unlisted_buf_win
+        before_each(function()
+          same_buf_win = meths.open_win(old_buf, false, float_opts)
+          unlisted_buf = meths.create_buf(true, false)
+          unlisted_buf_win = meths.open_win(unlisted_buf, true, float_opts)
+          insert('bar')
+          command('set nobuflisted')
+          meths.set_current_win(old_win)
+        end)
+        it('if called from non-floating window', function()
+          meths.buf_delete(old_buf, {force = true})
+          eq(old_win, meths.get_current_win())
+          expect('')
+          eq(2, #meths.list_wins())
+        end)
+        it('if called from floating window with the same buffer', function()
+          meths.set_current_win(same_buf_win)
+          meths.buf_delete(old_buf, {force = true})
+          eq(old_win, meths.get_current_win())
+          expect('')
+          eq(2, #meths.list_wins())
+        end)
+        -- TODO: this case is too hard to deal with
+        pending('if called from floating window with an unlisted buffer', function()
+          meths.set_current_win(unlisted_buf_win)
+          meths.buf_delete(old_buf, {force = true})
+        end)
+      end)
     end)
   end)
 
@@ -505,7 +534,7 @@ describe('float window', function()
       old_win = meths.get_current_win()
     end)
     describe('closing the last non-floating window', function()
-      describe('when all floating windows are closeable closes the tabpage', function()
+      describe('closes the tabpage when all floating windows are closeable', function()
         before_each(function()
           meths.open_win(old_buf, true, float_opts)
         end)
@@ -523,7 +552,7 @@ describe('float window', function()
           eq(1, #meths.list_tabpages())
         end)
       end)
-      describe('when there are non-closeable floating windows gives E5601', function()
+      describe('gives E5601 when there are non-closeable floating windows', function()
         before_each(function()
           command('set nohidden')
           local other_buf = meths.create_buf(true, false)
@@ -542,8 +571,8 @@ describe('float window', function()
       end)
     end)
     describe("deleting the last non-floating window's buffer", function()
-      describe('when all floating windows are closeable closes the tabpage', function()
-        local other_buf, same_buf_win, other_buf_win
+      describe('closes the tabpage when all floating windows are closeable', function()
+        local same_buf_win, other_buf, other_buf_win
         before_each(function()
           same_buf_win = meths.open_win(old_buf, false, float_opts)
           other_buf = meths.create_buf(true, false)
@@ -569,6 +598,7 @@ describe('float window', function()
           meths.buf_delete(old_buf, {force = false})
         end)
       end)
+      -- TODO: what to do when there are non-closeable floating windows?
     end)
   end)