1 files changed, 62 insertions, 0 deletions
diff --git a/test/functional/plugin/lsp/utils_spec.lua b/test/functional/plugin/lsp/utils_spec.lua
index 813b8de812..1e3e759e0b 100644
--- a/test/functional/plugin/lsp/utils_spec.lua
+++ b/test/functional/plugin/lsp/utils_spec.lua
@@ -5,6 +5,8 @@ local Screen = require('test.functional.ui.screen')
 local feed = n.feed
 local eq = t.eq
 local exec_lua = n.exec_lua
+local command, api = n.command, n.api
+local pcall_err = t.pcall_err
 
 describe('vim.lsp.util', function()
   before_each(n.clear)
@@ -265,6 +267,66 @@ describe('vim.lsp.util', function()
 
         eq(56, opts.height)
       end)
+
+      describe('vim.lsp.util.open_floating_preview', function()
+        local var_name = 'lsp_floating_preview'
+        local curbuf = api.nvim_get_current_buf()
+
+        it('clean bufvar after fclose', function()
+          exec_lua(function()
+            vim.lsp.util.open_floating_preview({ 'test' }, '', { height = 5, width = 2 })
+          end)
+          eq(true, api.nvim_win_is_valid(api.nvim_buf_get_var(curbuf, var_name)))
+          command('fclose')
+          eq(
+            'Key not found: lsp_floating_preview',
+            pcall_err(api.nvim_buf_get_var, curbuf, var_name)
+          )
+        end)
+
+        it('clean bufvar after CursorMoved', function()
+          local result = exec_lua(function()
+            vim.lsp.util.open_floating_preview({ 'test' }, '', { height = 5, width = 2 })
+            local winnr = vim.b[vim.api.nvim_get_current_buf()].lsp_floating_preview
+            local result = vim.api.nvim_win_is_valid(winnr)
+            vim.api.nvim_feedkeys(vim.keycode('G'), 'txn', false)
+            return result
+          end)
+          eq(true, result)
+          eq(
+            'Key not found: lsp_floating_preview',
+            pcall_err(api.nvim_buf_get_var, curbuf, var_name)
+          )
+        end)
+      end)
+    end)
+  end)
+
+  it('open_floating_preview zindex greater than current window', function()
+    local screen = Screen.new()
+    exec_lua(function()
+      vim.api.nvim_open_win(0, true, {
+        relative = 'editor',
+        border = 'single',
+        height = 11,
+        width = 51,
+        row = 2,
+        col = 2,
+      })
+      vim.keymap.set('n', 'K', function()
+        vim.lsp.util.open_floating_preview({ 'foo' }, '', { border = 'single' })
+      end, {})
     end)
+    feed('K')
+    screen:expect([[
+      ┌───────────────────────────────────────────────────┐|
+      │{4:^                                                   }│|
+      │┌───┐{11:                                              }│|
+      ││{4:foo}│{11:                                              }│|
+      │└───┘{11:                                              }│|
+      │{11:~                                                  }│|*7
+      └───────────────────────────────────────────────────┘|
+                                                           |
+    ]])
   end)
 end)