diff --git a/src/testdir/test_channel.vim b/src/testdir/test_channel.vim
index 90d828b..e9cc258 100644
--- a/src/testdir/test_channel.vim
+++ b/src/testdir/test_channel.vim
@@ -2304,8 +2304,14 @@
 func Test_cb_with_input()
   let g:wait_exit_cb = 1
 
-  call job_start('echo "Vim''s test"',
-        \ {'out_cb': 'ExitCb_cb_with_input'})
+  if has('win32')
+    let cmd = 'cmd /c echo "Vim''s test"'
+  else
+    let cmd = 'echo "Vim''s test"'
+  endif
+
+  let job = job_start(cmd, {'out_cb': 'ExitCb_cb_with_input'})
+  call WaitFor({-> job_status(job) == "dead"})
   call WaitForAssert({-> assert_equal(0, g:wait_exit_cb)})
 
   unlet g:wait_exit_cb
diff --git a/src/testdir/test_ex_mode.vim b/src/testdir/test_ex_mode.vim
index 8668763..3c6d08e 100644
--- a/src/testdir/test_ex_mode.vim
+++ b/src/testdir/test_ex_mode.vim
@@ -201,6 +201,7 @@
   call assert_equal(1, RunVim([], [], '-e -s -S Xexmodescript'))
   call assert_equal(['done'], readfile('Xdidexmode'))
 
+  call delete('logfile')
   call delete('Xdidexmode')
   call delete('Xexmodescript')
 endfunc
diff --git a/src/testdir/test_functions.vim b/src/testdir/test_functions.vim
index e8c372c..fb0b193 100644
--- a/src/testdir/test_functions.vim
+++ b/src/testdir/test_functions.vim
@@ -1273,7 +1273,16 @@
 func Test_executable_longname()
   CheckMSWindows
 
-  let fname = 'X' . repeat('あ', 200) . '.bat'
+  " Create a temporary .bat file with 205 characters in the name.
+  " Maximum length of a filename (including the path) on MS-Windows is 259
+  " characters.
+  " See https://docs.microsoft.com/en-us/windows/win32/fileio/maximum-file-path-limitation
+  let len = 259 - getcwd()->len() - 6
+  if len > 200
+    let len = 200
+  endif
+
+  let fname = 'X' . repeat('あ', len) . '.bat'
   call writefile([], fname)
   call assert_equal(1, executable(fname))
   call delete(fname)