1 files changed, 63 insertions, 11 deletions
diff --git a/test/functional/autocmd/cursorhold_spec.lua b/test/functional/autocmd/cursorhold_spec.lua
index 506b688853..b04bd5233a 100644
--- a/test/functional/autocmd/cursorhold_spec.lua
+++ b/test/functional/autocmd/cursorhold_spec.lua
@@ -2,30 +2,82 @@ local helpers = require('test.functional.helpers')(after_each)
 
 local clear = helpers.clear
 local eq = helpers.eq
-local eval = helpers.eval
 local feed = helpers.feed
 local retry = helpers.retry
-local source = helpers.source
+local exec = helpers.source
 local sleep = helpers.sleep
+local meths = helpers.meths
 
-describe('CursorHoldI', function()
-  before_each(clear)
+before_each(clear)
+
+describe('CursorHold', function()
+  before_each(function()
+    exec([[
+      let g:cursorhold = 0
+      augroup test
+        au CursorHold * let g:cursorhold += 1
+      augroup END
+    ]])
+  end)
+
+  it('is triggered correctly #12587', function()
+    local function test_cursorhold(fn, early)
+      local ut = 2
+      -- if testing with small 'updatetime' fails, double its value and test again
+      retry(10, nil, function()
+        ut = ut * 2
+        meths.set_option('updatetime', ut)
+        feed('0')  -- reset did_cursorhold
+        meths.set_var('cursorhold', 0)
+        sleep(ut / 4)
+        fn()
+        eq(0, meths.get_var('cursorhold'))
+        sleep(ut / 2)
+        fn()
+        eq(0, meths.get_var('cursorhold'))
+        sleep(ut / 2)
+        eq(early, meths.get_var('cursorhold'))
+        sleep(ut / 4 * 3)
+        eq(1, meths.get_var('cursorhold'))
+      end)
+    end
 
+    local ignore_key = meths.replace_termcodes('<Ignore>', true, true, true)
+    test_cursorhold(function() end, 1)
+    test_cursorhold(function() feed('') end, 1)
+    test_cursorhold(function() meths.feedkeys('', 'n', true) end, 1)
+    test_cursorhold(function() feed('<Ignore>') end, 0)
+    test_cursorhold(function() meths.feedkeys(ignore_key, 'n', true) end, 0)
+  end)
+
+  it("reducing 'updatetime' while waiting for CursorHold #20241", function()
+    meths.set_option('updatetime', 10000)
+    feed('0')  -- reset did_cursorhold
+    meths.set_var('cursorhold', 0)
+    sleep(50)
+    eq(0, meths.get_var('cursorhold'))
+    meths.set_option('updatetime', 20)
+    sleep(10)
+    eq(1, meths.get_var('cursorhold'))
+  end)
+end)
+
+describe('CursorHoldI', function()
   -- NOTE: since this test uses RPC it is not necessary to trigger the initial
   --       issue (#3757) via timer's or RPC callbacks in the first place.
   it('is triggered after input', function()
-    source([[
-    set updatetime=1
+    exec([[
+      set updatetime=1
 
-    let g:cursorhold = 0
-    augroup test
-      au CursorHoldI * let g:cursorhold += 1
-    augroup END
+      let g:cursorhold = 0
+      augroup test
+        au CursorHoldI * let g:cursorhold += 1
+      augroup END
     ]])
     feed('ifoo')
     retry(5, nil, function()
       sleep(1)
-      eq(1, eval('g:cursorhold'))
+      eq(1, meths.get_var('cursorhold'))
     end)
   end)
 end)