patch 8.2.4036: Vim9: script test file is getting too longv8.2.4036

Problem:    Vim9: script test file is getting too long.
Solution:   Split the import/export functionality to a separate file.

4 files changed, 1074 insertions, 1059 deletions

diff --git a/src/testdir/Make_all.mak b/src/testdir/Make_all.mak
index 3c54087a6d..ec12b6b401 100644
--- a/src/testdir/Make_all.mak
+++ b/src/testdir/Make_all.mak
@@ -37,6 +37,7 @@ TEST_VIM9 = \
 	test_vim9_expr \
 	test_vim9_fails \
 	test_vim9_func \
+	test_vim9_import \
 	test_vim9_script
 
 TEST_VIM9_RES = \
@@ -47,6 +48,7 @@ TEST_VIM9_RES = \
 	test_vim9_expr.res \
 	test_vim9_fails.res \
 	test_vim9_func.res \
+	test_vim9_import.res \
 	test_vim9_script.res
 
 # Benchmark scripts.
diff --git a/src/testdir/test_vim9_import.vim b/src/testdir/test_vim9_import.vim
new file mode 100644
index 0000000000..9d09c63f6e
--- /dev/null
+++ b/src/testdir/test_vim9_import.vim
@@ -0,0 +1,1069 @@
+" Test import/export of the Vim9 script language.
+
+source check.vim
+source term_util.vim
+source vim9.vim
+
+let s:export_script_lines =<< trim END
+  vim9script
+  var name: string = 'bob'
+  def Concat(arg: string): string
+    return name .. arg
+  enddef
+  g:result = Concat('bie')
+  g:localname = name
+
+  export const CONST = 1234
+  export var exported = 9876
+  export var exp_name = 'John'
+  export def Exported(): string
+    return 'Exported'
+  enddef
+  export def ExportedValue(): number
+    return exported
+  enddef
+  export def ExportedInc()
+    exported += 5
+  enddef
+  export final theList = [1]
+END
+
+def Undo_export_script_lines()
+  unlet g:result
+  unlet g:localname
+enddef
+
+def Test_vim9_import_export()
+  writefile(s:export_script_lines, 'Xexport.vim')
+  var import_script_lines =<< trim END
+    vim9script
+    var dir = './'
+    var ext = ".vim"
+    import dir .. 'Xexport' .. ext as expo
+
+    g:exported1 = expo.exported
+    expo.exported += 3
+    g:exported2 = expo.exported
+    g:exported3 = expo.ExportedValue()
+
+    expo.ExportedInc()
+    g:exported_i1 = expo.exported
+    g:exported_i2 = expo.ExportedValue()
+
+    expo.exported = 11
+    g:exported_s1 = expo.exported
+    g:exported_s2 = expo.ExportedValue()
+
+    g:imported_func = expo.Exported()
+
+    def GetExported(): string
+      var local_dict = {ref: expo.Exported}
+      return local_dict.ref()
+    enddef
+    g:funcref_result = GetExported()
+
+    g:imported_name = expo.exp_name
+    expo.exp_name ..= ' Doe'
+    g:imported_name_appended = expo.exp_name
+    g:exported_later = expo.exported
+
+    expo.theList->add(2)
+    assert_equal([1, 2], expo.theList)
+  END
+  writefile(import_script_lines, 'Ximport.vim')
+  source Ximport.vim
+
+  assert_equal('bobbie', g:result)
+  assert_equal('bob', g:localname)
+  assert_equal(9876, g:exported1)
+  assert_equal(9879, g:exported2)
+  assert_equal(9879, g:exported3)
+
+  assert_equal(9884, g:exported_i1)
+  assert_equal(9884, g:exported_i2)
+
+  assert_equal(11, g:exported_s1)
+  assert_equal(11, g:exported_s2)
+  assert_equal(11, g:exported_later)
+
+  assert_equal('Exported', g:imported_func)
+  assert_equal('Exported', g:funcref_result)
+  assert_equal('John', g:imported_name)
+  assert_equal('John Doe', g:imported_name_appended)
+  assert_false(exists('g:name'))
+
+  Undo_export_script_lines()
+  unlet g:exported1
+  unlet g:exported2
+  unlet g:exported3
+  unlet g:exported_i1
+  unlet g:exported_i2
+  unlet g:exported_later
+  unlet g:imported_func
+  unlet g:imported_name g:imported_name_appended
+  delete('Ximport.vim')
+
+  # similar, with line breaks
+  var import_line_break_script_lines =<< trim END
+    vim9script
+    import './Xexport.vim'
+        as expo
+    g:exported = expo.exported
+    expo.exported += 7
+    g:exported_added = expo.exported
+    g:imported_func = expo.Exported()
+  END
+  writefile(import_line_break_script_lines, 'Ximport_lbr.vim')
+  source Ximport_lbr.vim
+
+  assert_equal(11, g:exported)
+  assert_equal(18, g:exported_added)
+  assert_equal('Exported', g:imported_func)
+
+  # exported script not sourced again
+  assert_false(exists('g:result'))
+  unlet g:exported
+  unlet g:exported_added
+  unlet g:imported_func
+  delete('Ximport_lbr.vim')
+
+  var line_break_before_dot =<< trim END
+    vim9script
+    import './Xexport.vim' as expo
+    g:exported = expo
+                  .exported
+  END
+  writefile(line_break_before_dot, 'Ximport_lbr_before_dot.vim')
+  assert_fails('source Ximport_lbr_before_dot.vim', 'E1060:', '', 3)
+  delete('Ximport_lbr_before_dot.vim')
+
+  var line_break_after_dot =<< trim END
+    vim9script
+    import './Xexport.vim' as expo
+    g:exported = expo.
+                  exported
+  END
+  writefile(line_break_after_dot, 'Ximport_lbr_after_dot.vim')
+  assert_fails('source Ximport_lbr_after_dot.vim', 'E1074:', '', 3)
+  delete('Ximport_lbr_after_dot.vim')
+
+  var import_star_as_lines =<< trim END
+    vim9script
+    import './Xexport.vim' as Export
+    def UseExport()
+      g:exported_def = Export.exported
+    enddef
+    g:exported_script = Export.exported
+    assert_equal(1, exists('Export.exported'))
+    assert_equal(0, exists('Export.notexported'))
+    UseExport()
+  END
+  writefile(import_star_as_lines, 'Ximport.vim')
+  source Ximport.vim
+
+  assert_equal(18, g:exported_def)
+  assert_equal(18, g:exported_script)
+  unlet g:exported_def
+  unlet g:exported_script
+
+  var import_star_as_lines_no_dot =<< trim END
+    vim9script
+    import './Xexport.vim' as Export
+    def Func()
+      var dummy = 1
+      var imported = Export + dummy
+    enddef
+    defcompile
+  END
+  writefile(import_star_as_lines_no_dot, 'Ximport.vim')
+  assert_fails('source Ximport.vim', 'E1060:', '', 2, 'Func')
+
+  var import_star_as_lines_dot_space =<< trim END
+    vim9script
+    import './Xexport.vim' as Export
+    def Func()
+      var imported = Export . exported
+    enddef
+    defcompile
+  END
+  writefile(import_star_as_lines_dot_space, 'Ximport.vim')
+  assert_fails('source Ximport.vim', 'E1074:', '', 1, 'Func')
+
+  var import_func_duplicated =<< trim END
+    vim9script
+    import './Xexport.vim' as expo
+    import './Xexport.vim' as expo
+
+    ExportedInc()
+  END
+  writefile(import_func_duplicated, 'Ximport.vim')
+  assert_fails('source Ximport.vim', 'E1073:', '', 3, 'Ximport.vim')
+
+  var import_star_as_duplicated =<< trim END
+    vim9script
+    import './Xexport.vim' as Export
+    var some = 'other'
+    import './Xexport.vim' as Export
+    defcompile
+  END
+  writefile(import_star_as_duplicated, 'Ximport.vim')
+  assert_fails('source Ximport.vim', 'E1073:', '', 4, 'Ximport.vim')
+
+  var import_star_as_lines_script_no_dot =<< trim END
+    vim9script
+    import './Xexport.vim' as Export
+    g:imported_script = Export exported
+  END
+  writefile(import_star_as_lines_script_no_dot, 'Ximport.vim')
+  assert_fails('source Ximport.vim', 'E1060: Expected dot after name: Export exported')
+
+  var import_star_as_lines_script_space_after_dot =<< trim END
+    vim9script
+    import './Xexport.vim' as Export
+    g:imported_script = Export. exported
+  END
+  writefile(import_star_as_lines_script_space_after_dot, 'Ximport.vim')
+  assert_fails('source Ximport.vim', 'E1074:')
+
+  var import_star_as_lines_missing_name =<< trim END
+    vim9script
+    import './Xexport.vim' as Export
+    def Func()
+      var imported = Export.
+    enddef
+    defcompile
+  END
+  writefile(import_star_as_lines_missing_name, 'Ximport.vim')
+  assert_fails('source Ximport.vim', 'E1048:', '', 1, 'Func')
+
+  var import_star_as_lbr_lines =<< trim END
+    vim9script
+    import './Xexport.vim'
+        as Export
+    def UseExport()
+      g:exported = Export.exported
+    enddef
+    UseExport()
+  END
+  writefile(import_star_as_lbr_lines, 'Ximport.vim')
+  source Ximport.vim
+  assert_equal(18, g:exported)
+  unlet g:exported
+
+  # try to use something that exists but is not exported
+  var import_not_exported_lines =<< trim END
+    vim9script
+    import './Xexport.vim' as expo
+    echo expo.name
+  END
+  writefile(import_not_exported_lines, 'Ximport.vim')
+  assert_fails('source Ximport.vim', 'E1049:', '', 3, 'Ximport.vim')
+
+  # try to import something that is already defined
+  var import_already_defined =<< trim END
+    vim9script
+    var exported = 'something'
+    import './Xexport.vim' as exported
+  END
+  writefile(import_already_defined, 'Ximport.vim')
+  assert_fails('source Ximport.vim', 'E1054:', '', 3, 'Ximport.vim')
+
+  # try changing an imported const
+  var import_assign_to_const =<< trim END
+    vim9script
+    import './Xexport.vim' as expo
+    def Assign()
+      expo.CONST = 987
+    enddef
+    defcompile
+  END
+  writefile(import_assign_to_const, 'Ximport.vim')
+  assert_fails('source Ximport.vim', 'E46:', '', 1, '_Assign')
+
+  # try changing an imported final
+  var import_assign_to_final =<< trim END
+    vim9script
+    import './Xexport.vim' as expo
+    def Assign()
+      expo.theList = [2]
+    enddef
+    defcompile
+  END
+  writefile(import_assign_to_final, 'Ximport.vim')
+  assert_fails('source Ximport.vim', 'E46:', '', 1, '_Assign')
+
+  var import_no_as_lines =<< trim END
+    vim9script
+    import './Xexport.vim' name
+  END
+  writefile(import_no_as_lines, 'Ximport.vim')
+  assert_fails('source Ximport.vim', 'E488:', '', 2, 'Ximport.vim')
+
+  var import_invalid_string_lines =<< trim END
+    vim9script
+    import Xexport.vim
+  END
+  writefile(import_invalid_string_lines, 'Ximport.vim')
+  assert_fails('source Ximport.vim', 'E121:', '', 2, 'Ximport.vim')
+
+  var import_wrong_name_lines =<< trim END
+    vim9script
+    import './XnoExport.vim'
+  END
+  writefile(import_wrong_name_lines, 'Ximport.vim')
+  assert_fails('source Ximport.vim', 'E1053:', '', 2, 'Ximport.vim')
+
+  var import_redefining_lines =<< trim END
+    vim9script
+    import './Xexport.vim' as exported
+    var exported = 5
+  END
+  writefile(import_redefining_lines, 'Ximport.vim')
+  assert_fails('source Ximport.vim', 'E1213: Redefining imported item "exported"', '', 3)
+
+  var import_assign_wrong_type_lines =<< trim END
+    vim9script
+    import './Xexport.vim' as expo
+    expo.exported = 'xxx'
+  END
+  writefile(import_assign_wrong_type_lines, 'Ximport.vim')
+  assert_fails('source Ximport.vim', 'E1012: Type mismatch; expected number but got string', '', 3)
+
+  var import_assign_const_lines =<< trim END
+    vim9script
+    import './Xexport.vim' as expo
+    expo.CONST = 4321
+  END
+  writefile(import_assign_const_lines, 'Ximport.vim')
+  assert_fails('source Ximport.vim', 'E46: Cannot change read-only variable "CONST"', '', 3)
+
+  delete('Ximport.vim')
+  delete('Ximport3.vim')
+  delete('Xexport.vim')
+
+  # Check that in a Vim9 script 'cpo' is set to the Vim default.
+  # Flags added or removed are also applied to the restored value.
+  set cpo=abcd
+  var lines =<< trim END
+    vim9script
+    g:cpo_in_vim9script = &cpo
+    set cpo+=f
+    set cpo-=c
+    g:cpo_after_vim9script = &cpo
+  END
+  writefile(lines, 'Xvim9_script')
+  source Xvim9_script
+  assert_equal('fabd', &cpo)
+  set cpo&vim
+  assert_equal(&cpo, g:cpo_in_vim9script)
+  var newcpo = substitute(&cpo, 'c', '', '') .. 'f'
+  assert_equal(newcpo, g:cpo_after_vim9script)
+
+  delete('Xvim9_script')
+enddef
+
+def Test_import_funcref()
+  var lines =<< trim END
+      vim9script
+      export def F(): number
+        return 42
+      enddef
+      export const G = F
+  END
+  writefile(lines, 'Xlib.vim')
+
+  lines =<< trim END
+      vim9script
+      import './Xlib.vim' as lib
+      const Foo = lib.G()
+      assert_equal(42, Foo)
+
+      def DoTest()
+        const Goo = lib.G()
+        assert_equal(42, Goo)
+      enddef
+      DoTest()
+  END
+  CheckScriptSuccess(lines)
+
+  delete('Xlib.vim')
+enddef
+
+def Test_import_fails()
+  writefile([], 'Xfoo.vim')
+  var lines =<< trim END
+      import './Xfoo.vim' as foo
+      foo = 'bar'
+  END
+  CheckDefAndScriptFailure(lines, ['E1094:', 'E1236: Cannot use foo itself'])
+  lines =<< trim END
+      vim9script
+      import './Xfoo.vim' as foo
+      var that = foo
+  END
+  CheckScriptFailure(lines, 'E1060: Expected dot after name: foo')
+
+  lines =<< trim END
+      vim9script
+      import './Xfoo.vim' as 9foo
+  END
+  CheckScriptFailure(lines, 'E1047:')
+  lines =<< trim END
+      vim9script
+      import './Xfoo.vim' as the#foo
+  END
+  CheckScriptFailure(lines, 'E1047:')
+  lines =<< trim END
+      vim9script
+      import './Xfoo.vim' as g:foo
+  END
+  CheckScriptFailure(lines, 'E1047:')
+
+  delete('Xfoo.vim')
+
+  lines =<< trim END
+      vim9script
+      def TheFunc()
+        echo 'the func'
+      enddef
+      export var Ref = TheFunc
+  END
+  writefile([], 'Xthat.vim')
+  lines =<< trim END
+      import './Xthat.vim' as That
+      That()
+  END
+  CheckDefAndScriptFailure(lines, ['E1094:', 'E1236: Cannot use That itself'])
+ 
+  mkdir('Ximport')
+
+  writefile(['vim9script'], 'Ximport/.vim')
+  lines =<< trim END
+      vim9script
+      import './Ximport/.vim'
+  END
+  CheckScriptFailure(lines, 'E1261: Cannot import .vim without using "as"')
+  lines =<< trim END
+      vim9script
+      import './Ximport/.vim' as vim
+  END
+  CheckScriptSuccess(lines)
+
+  writefile(['vim9script'], 'Ximport/.vimrc')
+  lines =<< trim END
+      vim9script
+      import './Ximport/.vimrc'
+  END
+  CheckScriptFailure(lines, 'E1257: Imported script must use "as" or end in .vim')
+  lines =<< trim END
+      vim9script
+      import './Ximport/.vimrc' as vimrc
+  END
+  CheckScriptSuccess(lines)
+
+  delete('Ximport', 'rf')
+enddef
+
+func g:Trigger()
+  source Ximport.vim
+  return "echo 'yes'\<CR>"
+endfunc
+
+def Test_import_export_expr_map()
+  # check that :import and :export work when buffer is locked
+  var export_lines =<< trim END
+    vim9script
+    export def That(): string
+      return 'yes'
+    enddef
+  END
+  writefile(export_lines, 'Xexport_that.vim')
+
+  var import_lines =<< trim END
+    vim9script
+    import './Xexport_that.vim' as that
+    assert_equal('yes', that.That())
+  END
+  writefile(import_lines, 'Ximport.vim')
+
+  nnoremap <expr> trigger g:Trigger()
+  feedkeys('trigger', "xt")
+
+  delete('Xexport_that.vim')
+  delete('Ximport.vim')
+  nunmap trigger
+enddef
+
+def Test_import_in_filetype()
+  # check that :import works when the buffer is locked
+  mkdir('ftplugin', 'p')
+  var export_lines =<< trim END
+    vim9script
+    export var That = 'yes'
+  END
+  writefile(export_lines, 'ftplugin/Xexport_ft.vim')
+
+  var import_lines =<< trim END
+    vim9script
+    import './Xexport_ft.vim' as ft
+    assert_equal('yes', ft.That)
+    g:did_load_mytpe = 1
+  END
+  writefile(import_lines, 'ftplugin/qf.vim')
+
+  var save_rtp = &rtp
+  &rtp = getcwd() .. ',' .. &rtp
+
+  filetype plugin on
+  copen
+  assert_equal(1, g:did_load_mytpe)
+
+  quit!
+  delete('Xexport_ft.vim')
+  delete('ftplugin', 'rf')
+  &rtp = save_rtp
+enddef
+
+def Test_use_import_in_mapping()
+  var lines =<< trim END
+      vim9script
+      export def Funcx()
+        g:result = 42
+      enddef
+  END
+  writefile(lines, 'XsomeExport.vim')
+  lines =<< trim END
+      vim9script
+      import './XsomeExport.vim' as some
+      var Funcy = some.Funcx
+      nnoremap <F3> :call <sid>Funcy()<cr>
+  END
+  writefile(lines, 'Xmapscript.vim')
+
+  source Xmapscript.vim
+  feedkeys("\<F3>", "xt")
+  assert_equal(42, g:result)
+
+  unlet g:result
+  delete('XsomeExport.vim')
+  delete('Xmapscript.vim')
+  nunmap <F3>
+enddef
+
+def Test_export_fails()
+  CheckScriptFailure(['export var some = 123'], 'E1042:')
+  CheckScriptFailure(['vim9script', 'export var g:some'], 'E1022:')
+  CheckScriptFailure(['vim9script', 'export echo 134'], 'E1043:')
+
+  assert_fails('export something', 'E1043:')
+enddef
+
+func Test_import_fails_without_script()
+  CheckRunVimInTerminal
+
+  " call indirectly to avoid compilation error for missing functions
+  call Run_Test_import_fails_on_command_line()
+endfunc
+
+def Run_Test_import_fails_on_command_line()
+  var export =<< trim END
+    vim9script
+    export def Foo(): number
+        return 0
+    enddef
+  END
+  writefile(export, 'XexportCmd.vim')
+
+  var buf = RunVimInTerminal('-c "import Foo from ''./XexportCmd.vim''"', {
+                rows: 6, wait_for_ruler: 0})
+  WaitForAssert(() => assert_match('^E1094:', term_getline(buf, 5)))
+
+  delete('XexportCmd.vim')
+  StopVimInTerminal(buf)
+enddef
+
+def Test_vim9_reload_noclear()
+  var lines =<< trim END
+    vim9script
+    export var exported = 'thexport'
+
+    export def TheFunc(x = 0)
+    enddef
+  END
+  writefile(lines, 'XExportReload')
+  lines =<< trim END
+    vim9script noclear
+    g:loadCount += 1
+    var s:reloaded = 'init'
+    import './XExportReload' as exp
+
+    def Again(): string
+      return 'again'
+    enddef
+
+    exp.TheFunc()
+
+    if exists('s:loaded') | finish | endif
+    var s:loaded = true
+
+    var s:notReloaded = 'yes'
+    s:reloaded = 'first'
+    def g:Values(): list<string>
+      return [s:reloaded, s:notReloaded, Again(), Once(), exp.exported]
+    enddef
+
+    def Once(): string
+      return 'once'
+    enddef
+  END
+  writefile(lines, 'XReloaded')
+  g:loadCount = 0
+  source XReloaded
+  assert_equal(1, g:loadCount)
+  assert_equal(['first', 'yes', 'again', 'once', 'thexport'], g:Values())
+  source XReloaded
+  assert_equal(2, g:loadCount)
+  assert_equal(['init', 'yes', 'again', 'once', 'thexport'], g:Values())
+  source XReloaded
+  assert_equal(3, g:loadCount)
+  assert_equal(['init', 'yes', 'again', 'once', 'thexport'], g:Values())
+
+  delete('XReloaded')
+  delete('XExportReload')
+  delfunc g:Values
+  unlet g:loadCount
+
+  lines =<< trim END
+      vim9script
+      def Inner()
+      enddef
+  END
+  lines->writefile('XreloadScript.vim')
+  source XreloadScript.vim
+
+  lines =<< trim END
+      vim9script
+      def Outer()
+        def Inner()
+        enddef
+      enddef
+      defcompile
+  END
+  lines->writefile('XreloadScript.vim')
+  source XreloadScript.vim
+
+  delete('XreloadScript.vim')
+enddef
+
+def Test_vim9_reload_import()
+  var lines =<< trim END
+    vim9script
+    const var = ''
+    var valone = 1234
+    def MyFunc(arg: string)
+       valone = 5678
+    enddef
+  END
+  var morelines =<< trim END
+    var valtwo = 222
+    export def GetValtwo(): number
+      return valtwo
+    enddef
+  END
+  writefile(lines + morelines, 'Xreload.vim')
+  source Xreload.vim
+  source Xreload.vim
+  source Xreload.vim
+
+  # cannot declare a var twice
+  lines =<< trim END
+    vim9script
+    var valone = 1234
+    var valone = 5678
+  END
+  writefile(lines, 'Xreload.vim')
+  assert_fails('source Xreload.vim', 'E1041:', '', 3, 'Xreload.vim')
+
+  delete('Xreload.vim')
+  delete('Ximport.vim')
+enddef
+
+" if a script is reloaded with a script-local variable that changed its type, a
+" compiled function using that variable must fail.
+def Test_script_reload_change_type()
+  var lines =<< trim END
+    vim9script noclear
+    var str = 'string'
+    def g:GetStr(): string
+      return str .. 'xxx'
+    enddef
+  END
+  writefile(lines, 'Xreload.vim')
+  source Xreload.vim
+  echo g:GetStr()
+
+  lines =<< trim END
+    vim9script noclear
+    var str = 1234
+  END
+  writefile(lines, 'Xreload.vim')
+  source Xreload.vim
+  assert_fails('echo g:GetStr()', 'E1150:')
+
+  delfunc g:GetStr
+  delete('Xreload.vim')
+enddef
+
+" Define CallFunc so that the test can be compiled
+command CallFunc echo 'nop'
+
+def Test_script_reload_from_function()
+  var lines =<< trim END
+      vim9script
+
+      if exists('g:loaded')
+        finish
+      endif
+      g:loaded = 1
+      delcommand CallFunc
+      command CallFunc Func()
+      def Func()
+        so XreloadFunc.vim
+        g:didTheFunc = 1
+      enddef
+  END
+  writefile(lines, 'XreloadFunc.vim')
+  source XreloadFunc.vim
+  CallFunc
+  assert_equal(1, g:didTheFunc)
+
+  delete('XreloadFunc.vim')
+  delcommand CallFunc
+  unlet g:loaded
+  unlet g:didTheFunc
+enddef
+
+def s:RetSome(): string
+  return 'some'
+enddef
+
+" Not exported function that is referenced needs to be accessed by the
+" script-local name.
+def Test_vim9_funcref()
+  var sortlines =<< trim END
+      vim9script
+      def Compare(i1: number, i2: number): number
+        return i2 - i1
+      enddef
+
+      export def FastSort(): list<number>
+        return range(5)->sort(Compare)
+      enddef
+
+      export def GetString(arg: string): string
+        return arg
+      enddef
+  END
+  writefile(sortlines, 'Xsort.vim')
+
+  var lines =<< trim END
+    vim9script
+    import './Xsort.vim'
+    def Test()
+      g:result = Xsort.FastSort()
+    enddef
+    Test()
+
+    # using a function imported with "as"
+    import './Xsort.vim' as anAlias
+    assert_equal('yes', anAlias.GetString('yes'))
+
+    # using the function from a compiled function
+    def TestMore(): string
+      var s = s:anAlias.GetString('foo')
+      return s .. anAlias.GetString('bar')
+    enddef
+    assert_equal('foobar', TestMore())
+
+    # error when using a function that isn't exported
+    assert_fails('anAlias.Compare(1, 2)', 'E1049:')
+  END
+  writefile(lines, 'Xscript.vim')
+
+  source Xscript.vim
+  assert_equal([4, 3, 2, 1, 0], g:result)
+
+  unlet g:result
+  delete('Xsort.vim')
+  delete('Xscript.vim')
+
+  var Funcref = function('s:RetSome')
+  assert_equal('some', Funcref())
+enddef
+
+" Check that when searching for "FilterFunc" it finds the import in the
+" script where FastFilter() is called from, both as a string and as a direct
+" function reference.
+def Test_vim9_funcref_other_script()
+  var filterLines =<< trim END
+    vim9script
+    export def FilterFunc(idx: number, val: number): bool
+      return idx % 2 == 1
+    enddef
+    export def FastFilter(): list<number>
+      return range(10)->filter('FilterFunc(v:key, v:val)')
+    enddef
+    export def FastFilterDirect(): list<number>
+      return range(10)->filter(FilterFunc)
+    enddef
+  END
+  writefile(filterLines, 'Xfilter.vim')
+
+  var lines =<< trim END
+    vim9script
+    import './Xfilter.vim' as filter
+    def Test()
+      var x: list<number> = filter.FastFilter()
+    enddef
+    Test()
+    def TestDirect()
+      var x: list<number> = filter.FastFilterDirect()
+    enddef
+    TestDirect()
+  END
+  CheckScriptSuccess(lines)
+  delete('Xfilter.vim')
+enddef
+
+def Test_import_absolute()
+  var import_lines = [
+        'vim9script',
+        'import "' .. escape(getcwd(), '\') .. '/Xexport_abs.vim" as abs',
+        'def UseExported()',
+        '  g:imported_abs = abs.exported',
+        '  abs.exported = 8888',
+        '  g:imported_after = abs.exported',
+        'enddef',
+        'UseExported()',
+        'g:import_disassembled = execute("disass UseExported")',
+        ]
+  writefile(import_lines, 'Ximport_abs.vim')
+  writefile(s:export_script_lines, 'Xexport_abs.vim')
+
+  source Ximport_abs.vim
+
+  assert_equal(9876, g:imported_abs)
+  assert_equal(8888, g:imported_after)
+  assert_match('<SNR>\d\+_UseExported\_s*' ..
+          'g:imported_abs = abs.exported\_s*' ..
+          '0 LOADSCRIPT exported-2 from .*Xexport_abs.vim\_s*' ..
+          '1 STOREG g:imported_abs\_s*' ..
+          'abs.exported = 8888\_s*' ..
+          '2 PUSHNR 8888\_s*' ..
+          '3 STORESCRIPT exported-2 in .*Xexport_abs.vim\_s*' ..
+          'g:imported_after = abs.exported\_s*' ..
+          '4 LOADSCRIPT exported-2 from .*Xexport_abs.vim\_s*' ..
+          '5 STOREG g:imported_after',
+        g:import_disassembled)
+
+  Undo_export_script_lines()
+  unlet g:imported_abs
+  unlet g:import_disassembled
+
+  delete('Ximport_abs.vim')
+  delete('Xexport_abs.vim')
+enddef
+
+def Test_import_rtp()
+  var import_lines = [
+        'vim9script',
+        'import "Xexport_rtp.vim" as rtp',
+        'g:imported_rtp = rtp.exported',
+        ]
+  writefile(import_lines, 'Ximport_rtp.vim')
+  mkdir('import', 'p')
+  writefile(s:export_script_lines, 'import/Xexport_rtp.vim')
+
+  var save_rtp = &rtp
+  &rtp = getcwd()
+  source Ximport_rtp.vim
+  &rtp = save_rtp
+
+  assert_equal(9876, g:imported_rtp)
+
+  Undo_export_script_lines()
+  unlet g:imported_rtp
+  delete('Ximport_rtp.vim')
+  delete('import', 'rf')
+enddef
+
+def Test_import_compile_error()
+  var export_lines = [
+        'vim9script',
+        'export def ExpFunc(): string',
+        '  return notDefined',
+        'enddef',
+        ]
+  writefile(export_lines, 'Xexported.vim')
+
+  var import_lines = [
+        'vim9script',
+        'import "./Xexported.vim" as expo',
+        'def ImpFunc()',
+        '  echo expo.ExpFunc()',
+        'enddef',
+        'defcompile',
+        ]
+  writefile(import_lines, 'Ximport.vim')
+
+  try
+    source Ximport.vim
+  catch /E1001/
+    # Error should be before the Xexported.vim file.
+    assert_match('E1001: Variable not found: notDefined', v:exception)
+    assert_match('function <SNR>\d\+_ImpFunc\[1\]..<SNR>\d\+_ExpFunc, line 1', v:throwpoint)
+  endtry
+
+  delete('Xexported.vim')
+  delete('Ximport.vim')
+enddef
+
+def Test_func_overrules_import_fails()
+  var export_lines =<< trim END
+      vim9script
+      export def Func()
+        echo 'imported'
+      enddef
+  END
+  writefile(export_lines, 'XexportedFunc.vim')
+
+  var lines =<< trim END
+    vim9script
+    import './XexportedFunc.vim' as Func
+    def Func()
+      echo 'local to function'
+    enddef
+  END
+  CheckScriptFailure(lines, 'E1236:')
+
+  lines =<< trim END
+    vim9script
+    import './XexportedFunc.vim' as Func
+    def Outer()
+      def Func()
+        echo 'local to function'
+      enddef
+    enddef
+    defcompile
+  END
+  CheckScriptFailure(lines, 'E1236:')
+
+  delete('XexportedFunc.vim')
+enddef
+
+def Test_source_vim9_from_legacy()
+  var vim9_lines =<< trim END
+    vim9script
+    var local = 'local'
+    g:global = 'global'
+    export var exported = 'exported'
+    export def GetText(): string
+       return 'text'
+    enddef
+  END
+  writefile(vim9_lines, 'Xvim9_script.vim')
+
+  var legacy_lines =<< trim END
+    source Xvim9_script.vim
+
+    call assert_false(exists('local'))
+    call assert_false(exists('exported'))
+    call assert_false(exists('s:exported'))
+    call assert_equal('global', global)
+    call assert_equal('global', g:global)
+
+    "" imported variable becomes script-local
+    "import exported from './Xvim9_script.vim'
+    "call assert_equal('exported', s:exported)
+    "call assert_false(exists('exported'))
+
+    "" imported function becomes script-local
+    "import GetText from './Xvim9_script.vim'
+    "call assert_equal('text', s:GetText())
+    "call assert_false(exists('*GetText'))
+  END
+  writefile(legacy_lines, 'Xlegacy_script.vim')
+
+  source Xlegacy_script.vim
+  assert_equal('global', g:global)
+  unlet g:global
+
+  delete('Xlegacy_script.vim')
+  delete('Xvim9_script.vim')
+enddef
+
+def Test_cmdline_win()
+  # if the Vim syntax highlighting uses Vim9 constructs they can be used from
+  # the command line window.
+  mkdir('rtp/syntax', 'p')
+  var export_lines =<< trim END
+    vim9script
+    export var That = 'yes'
+  END
+  writefile(export_lines, 'rtp/syntax/Xexport.vim')
+  var import_lines =<< trim END
+    vim9script
+    import './Xexport.vim' as exp
+    echo exp.That
+  END
+  writefile(import_lines, 'rtp/syntax/vim.vim')
+  var save_rtp = &rtp
+  &rtp = getcwd() .. '/rtp' .. ',' .. &rtp
+  syntax on
+  augroup CmdWin
+    autocmd CmdwinEnter * g:got_there = 'yes'
+  augroup END
+  # this will open and also close the cmdline window
+  feedkeys('q:', 'xt')
+  assert_equal('yes', g:got_there)
+
+  augroup CmdWin
+    au!
+  augroup END
+  &rtp = save_rtp
+  delete('rtp', 'rf')
+enddef
+
+def Test_import_gone_when_sourced_twice()
+  var exportlines =<< trim END
+      vim9script
+      if exists('g:guard')
+        finish
+      endif
+      g:guard = 1
+      export var name = 'someName'
+  END
+  writefile(exportlines, 'XexportScript.vim')
+
+  var lines =<< trim END
+      vim9script
+      import './XexportScript.vim' as expo
+      def g:GetName(): string
+        return expo.name
+      enddef
+  END
+  writefile(lines, 'XscriptImport.vim')
+  so XscriptImport.vim
+  assert_equal('someName', g:GetName())
+
+  so XexportScript.vim
+  assert_fails('call g:GetName()', 'E1149:')
+
+  delfunc g:GetName
+  delete('XexportScript.vim')
+  delete('XscriptImport.vim')
+  unlet g:guard
+enddef
+
+
+" vim: ts=8 sw=2 sts=2 expandtab tw=80 fdm=marker
diff --git a/src/testdir/test_vim9_script.vim b/src/testdir/test_vim9_script.vim
index b6dcf36212..8c7f85f167 100644
--- a/src/testdir/test_vim9_script.vim
+++ b/src/testdir/test_vim9_script.vim
@@ -2,10 +2,9 @@
 
 source check.vim
 source term_util.vim
-source view_util.vim
 source vim9.vim
-source shared.vim
 source screendump.vim
+source shared.vim
 
 def Test_vim9script_feature()
   # example from the help, here the feature is always present
@@ -1142,552 +1141,6 @@ if has('channel')
   endfunc
 endif
 
-let s:export_script_lines =<< trim END
-  vim9script
-  var name: string = 'bob'
-  def Concat(arg: string): string
-    return name .. arg
-  enddef
-  g:result = Concat('bie')
-  g:localname = name
-
-  export const CONST = 1234
-  export var exported = 9876
-  export var exp_name = 'John'
-  export def Exported(): string
-    return 'Exported'
-  enddef
-  export def ExportedValue(): number
-    return exported
-  enddef
-  export def ExportedInc()
-    exported += 5
-  enddef
-  export final theList = [1]
-END
-
-def Undo_export_script_lines()
-  unlet g:result
-  unlet g:localname
-enddef
-
-def Test_vim9_import_export()
-  writefile(s:export_script_lines, 'Xexport.vim')
-  var import_script_lines =<< trim END
-    vim9script
-    var dir = './'
-    var ext = ".vim"
-    import dir .. 'Xexport' .. ext as expo
-
-    g:exported1 = expo.exported
-    expo.exported += 3
-    g:exported2 = expo.exported
-    g:exported3 = expo.ExportedValue()
-
-    expo.ExportedInc()
-    g:exported_i1 = expo.exported
-    g:exported_i2 = expo.ExportedValue()
-
-    expo.exported = 11
-    g:exported_s1 = expo.exported
-    g:exported_s2 = expo.ExportedValue()
-
-    g:imported_func = expo.Exported()
-
-    def GetExported(): string
-      var local_dict = {ref: expo.Exported}
-      return local_dict.ref()
-    enddef
-    g:funcref_result = GetExported()
-
-    g:imported_name = expo.exp_name
-    expo.exp_name ..= ' Doe'
-    g:imported_name_appended = expo.exp_name
-    g:exported_later = expo.exported
-
-    expo.theList->add(2)
-    assert_equal([1, 2], expo.theList)
-  END
-  writefile(import_script_lines, 'Ximport.vim')
-  source Ximport.vim
-
-  assert_equal('bobbie', g:result)
-  assert_equal('bob', g:localname)
-  assert_equal(9876, g:exported1)
-  assert_equal(9879, g:exported2)
-  assert_equal(9879, g:exported3)
-
-  assert_equal(9884, g:exported_i1)
-