patch 9.0.1257: code style is not check in test scripts

Problem:    Code style is not check in test scripts.
Solution:   Add basic code style check for test files.

src/testdir/keycode_check.vim

@@ -4,8 +4,8 @@ vim9script
 #
 # Usage:  vim -u NONE -S keycode_check.vim
 #
-# Author: 	Bram Moolenaar
+# Author:	Bram Moolenaar
-# Last Update: 	2022 Nov 15
+# Last Update:	2022 Nov 15
 #
 # The codes are stored in the file "keycode_check.json", so that you can
 # compare the results of various terminals.
@@ -449,7 +449,7 @@ enddef
 # The main loop
 while true
   var action = inputlist(['Select operation:',
-    			'1. List results',
+			'1. List results',
 			'2. Add results for a new terminal',
 			'3. Replace results',
 			'4. Clear results',

src/testdir/test_blockedit.vim

@@ -52,7 +52,7 @@ func Test_blockinsert_autoindent()
   let expected =<< trim END
       vim9script
       var d = {
-      	a: (): asdf => 0,
+	a: (): asdf => 0,
       b: (): asdf => 0,
       c: (): asdf => 0,
       }

src/testdir/test_codestyle.vim

@@ -41,5 +41,42 @@ def Test_source_files()
   bwipe!
 enddef
 
+def Test_test_files()
+  for fname in glob('*.vim', 0, 1)
+    exe 'edit ' .. fname
+
+    # some files intentionally have misplaced white space
+    if fname =~ 'test_cindent.vim' || fname =~ 'test_join.vim'
+      continue
+    endif
+
+    # skip files that are known to have a space before a tab
+    if fname !~ 'test_comments.vim'
+        && fname !~ 'test_listchars.vim'
+        && fname !~ 'test_visual.vim'
+      cursor(1, 1)
+      var lnum = search(fname =~ "test_regexp_latin" ? '[^á] \t' : ' \t')
+      assert_equal(0, lnum, 'testdir/' .. fname .. ': space before tab')
+    endif
+
+    # skip files that are known to have trailing white space
+    if fname !~ 'test_cmdline.vim'
+            && fname !~ 'test_let.vim'
+            && fname !~ 'test_tagjump.vim'
+            && fname !~ 'test_vim9_cmd.vim'
+      cursor(1, 1)
+      var lnum = search(
+          fname =~ 'test_vim9_assign.vim' ? '[^=]\s$'
+          : fname =~ 'test_vim9_class.vim' ? '[^)]\s$'
+          : fname =~ 'test_vim9_script.vim' ? '[^,:3]\s$'
+          : fname =~ 'test_visual.vim' ? '[^/]\s$'
+          : '[^\\]\s$')
+      assert_equal(0, lnum, 'testdir/' .. fname .. ': trailing white space')
+    endif
+  endfor
+
+  bwipe!
+enddef
+
 
 " vim: shiftwidth=2 sts=2 expandtab

src/testdir/test_diffmode.vim

@@ -1113,7 +1113,7 @@ func Test_diff_with_syntax()
   CheckScreendump
 
   let lines =<< trim END
-  	void doNothing() {
+	void doNothing() {
 	   int x = 0;
 	   char *s = "hello";
 	   return 5;
@@ -1121,7 +1121,7 @@ func Test_diff_with_syntax()
   END
   call writefile(lines, 'Xprogram1.c', 'D')
   let lines =<< trim END
-  	void doSomething() {
+	void doSomething() {
 	   int x = 0;
 	   char *s = "there";
 	   return 5;
@@ -1130,7 +1130,7 @@ func Test_diff_with_syntax()
   call writefile(lines, 'Xprogram2.c', 'D')
 
   let lines =<< trim END
-  	edit Xprogram1.c
+	edit Xprogram1.c
 	diffsplit Xprogram2.c
   END
   call writefile(lines, 'Xtest_diff_syntax', 'D')

src/testdir/test_quickfix.vim

@@ -1211,20 +1211,20 @@ func Test_efm1()
     "Xtestfile", linenr 16: yet another problem
     Error in "Xtestfile" at line 17:
     x should be a dot
-    	xxxxxxxxxxxxxxxxxxxxxxxxxxxxxx    line 17
+	xxxxxxxxxxxxxxxxxxxxxxxxxxxxxx    line 17
                 ^
     Error in "Xtestfile" at line 18:
     x should be a dot
-    	xxxxxxxxxxxxxxxxxxxxxxxxxxxxxx    line 18
+	xxxxxxxxxxxxxxxxxxxxxxxxxxxxxx    line 18
     .............^
     Error in "Xtestfile" at line 19:
     x should be a dot
-    	xxxxxxxxxxxxxxxxxxxxxxxxxxxxxx    line 19
+	xxxxxxxxxxxxxxxxxxxxxxxxxxxxxx    line 19
     --------------^
     Error in "Xtestfile" at line 20:
     x should be a dot
-    	xxxxxxxxxxxxxxxxxxxxxxxxxxxxxx    line 20
+	xxxxxxxxxxxxxxxxxxxxxxxxxxxxxx    line 20
-    	       ^
+	       ^
 
     Does anyone know what is the problem and how to correction it?
     "Xtestfile", line 21 col 9: What is the title of the quickfix window?

src/testdir/test_signs.vim

@@ -1775,10 +1775,10 @@ func Test_sign_cursor_position()
   let lines =<< trim END
 	call setline(1, [repeat('x', 75), 'mmmm', 'yyyy'])
 	call cursor(2,1)
-   	sign define s1 texthl=Search text==>
+	sign define s1 texthl=Search text==>
-   	sign define s2 linehl=Pmenu
+	sign define s2 linehl=Pmenu
 	redraw
-   	sign place 10 line=2 name=s1
+	sign place 10 line=2 name=s1
   END
   call writefile(lines, 'XtestSigncolumn', 'D')
   let buf = RunVimInTerminal('-S XtestSigncolumn', {'rows': 6})

src/testdir/test_vim9_expr.vim

@@ -74,7 +74,7 @@ def Test_expr1_ternary_vimscript()
   # check line continuation
   var lines =<< trim END
       var name = 1
-      		? 'yes'
+		? 'yes'
 		: 'no'
       assert_equal('yes', name)
   END
@@ -82,7 +82,7 @@ def Test_expr1_ternary_vimscript()
 
   lines =<< trim END
       var name = v:false
-      		? 'yes'
+		? 'yes'
 		: 'no'
       assert_equal('no', name)
   END
@@ -90,7 +90,7 @@ def Test_expr1_ternary_vimscript()
 
   lines =<< trim END
       var name = v:false ?
-      		'yes' :
+		'yes' :
 		'no'
       assert_equal('no', name)
   END
@@ -98,7 +98,7 @@ def Test_expr1_ternary_vimscript()
 
   lines =<< trim END
       var name = v:false ?  # comment
-      		'yes' :
+		'yes' :
                 # comment
 		'no' # comment
       assert_equal('no', name)
@@ -317,22 +317,22 @@ def Test_expr2_vimscript()
   # check line continuation
   var lines =<< trim END
       var name = 0
-      		|| 1
+		|| 1
       assert_equal(true, name)
   END
   v9.CheckDefAndScriptSuccess(lines)
 
   lines =<< trim END
       var name = v:false
-      		|| v:true
+		|| v:true
-      		|| v:false
+		|| v:false
       assert_equal(v:true, name)
   END
   v9.CheckDefAndScriptSuccess(lines)
 
   lines =<< trim END
       var name = v:false ||
-      		v:true ||
+		v:true ||
 		v:false
       assert_equal(v:true, name)
   END
@@ -341,7 +341,7 @@ def Test_expr2_vimscript()
   lines =<< trim END
       var name = v:false || # comment
                 # comment
-      		v:true ||
+		v:true ||
                 # comment
 		v:false # comment
       assert_equal(v:true, name)
@@ -456,23 +456,23 @@ def Test_expr3_vimscript()
   # check line continuation
   var lines =<< trim END
       var name = 0
-      		&& 1
+		&& 1
       assert_equal(false, name)
   END
   v9.CheckDefAndScriptSuccess(lines)
 
   lines =<< trim END
       var name = v:true
-      		&& v:true
+		&& v:true
-      		&& v:true
+		&& v:true
       assert_equal(v:true, name)
   END
   v9.CheckDefAndScriptSuccess(lines)
 
   lines =<< trim END
       var name = v:true &&
-      		v:true &&
+		v:true &&
-      		v:true
+		v:true
       assert_equal(v:true, name)
   END
   v9.CheckDefAndScriptSuccess(lines)
@@ -480,9 +480,9 @@ def Test_expr3_vimscript()
   lines =<< trim END
       var name = v:true &&  # comment
                 # comment
-      		v:true &&
+		v:true &&
                 # comment
-      		v:true
+		v:true
       assert_equal(v:true, name)
   END
   v9.CheckDefAndScriptSuccess(lines)
@@ -1274,7 +1274,7 @@ def Test_expr4_vim9script()
   # check line continuation
   var lines =<< trim END
       var name = 0
-      		< 1
+		< 1
       assert_equal(true, name)
   END
   v9.CheckDefAndScriptSuccess(lines)
@@ -1282,14 +1282,14 @@ def Test_expr4_vim9script()
   lines =<< trim END
       var name = 123
                 # comment
-      		!= 123
+		!= 123
       assert_equal(false, name)
   END
   v9.CheckDefAndScriptSuccess(lines)
 
   lines =<< trim END
       var name = 123 ==
-      			123
+			123
       assert_equal(true, name)
   END
   v9.CheckDefAndScriptSuccess(lines)
@@ -1297,7 +1297,7 @@ def Test_expr4_vim9script()
   lines =<< trim END
       var list = [1, 2, 3]
       var name = list
-      		is list
+		is list
       assert_equal(true, name)
   END
   v9.CheckDefAndScriptSuccess(lines)
@@ -1306,7 +1306,7 @@ def Test_expr4_vim9script()
       var list = [1, 2, 3]
       var name = list # comment
                  # comment
-      		is list
+		is list
       assert_equal(true, name)
   END
   v9.CheckDefAndScriptSuccess(lines)
@@ -1314,7 +1314,7 @@ def Test_expr4_vim9script()
   lines =<< trim END
       var myblob = 0z1234
       var name = myblob
-      		isnot 0z11
+		isnot 0z11
       assert_equal(true, name)
   END
   v9.CheckDefAndScriptSuccess(lines)
@@ -1526,7 +1526,7 @@ def Test_expr6_vim9script()
   # check line continuation
   var lines =<< trim END
       var name = 11
-      		+ 77
+		+ 77
 		- 22
       assert_equal(66, name)
   END
@@ -1551,7 +1551,7 @@ def Test_expr6_vim9script()
 
   lines =<< trim END
       var name = 'one'
-      		.. 'two'
+		.. 'two'
       assert_equal('onetwo', name)
   END
   v9.CheckDefAndScriptSuccess(lines)
@@ -1859,7 +1859,7 @@ def Test_expr7_vim9script()
   # check line continuation
   var lines =<< trim END
       var name = 11
-      		* 22
+		* 22
 		/ 3
       assert_equal(80, name)
   END
@@ -1867,7 +1867,7 @@ def Test_expr7_vim9script()
 
   lines =<< trim END
       var name = 25
-      		% 10
+		% 10
       assert_equal(5, name)
   END
   v9.CheckDefAndScriptSuccess(lines)
@@ -1877,14 +1877,14 @@ def Test_expr7_vim9script()
                 # comment
 
                 # comment
-      		% 10
+		% 10
       assert_equal(5, name)
   END
   v9.CheckDefAndScriptSuccess(lines)
 
   lines =<< trim END
       var name = 11 *
-      		22 /
+		22 /
 		3
       assert_equal(80, name)
   END
@@ -3206,7 +3206,7 @@ enddef
 def Test_expr_member_vim9script()
   var lines =<< trim END
       var d = {one:
-      		'one',
+		'one',
 		two: 'two',
 		1: 1,
 		_: 2}

src/testdir/test_vim9_func.vim

@@ -2176,7 +2176,7 @@ def Test_error_in_function_args()
         # Nois
         # one
 
-         enddef|BBBB
+        enddef|BBBB
       enddef
       # Compile all functions
       defcompile

src/testdir/vim9.vim

@@ -195,14 +195,14 @@ endfunc
 # CheckLegacyAndVim9Success()
 export def CheckTransLegacySuccess(lines: list<string>)
   var legacylines = lines->mapnew((_, v) =>
-  				v->substitute('\<VAR\>', 'let', 'g')
+				v->substitute('\<VAR\>', 'let', 'g')
-		           	 ->substitute('\<LET\>', 'let', 'g')
+				 ->substitute('\<LET\>', 'let', 'g')
-		           	 ->substitute('\<LSTART\>', '{', 'g')
+				 ->substitute('\<LSTART\>', '{', 'g')
-		           	 ->substitute('\<LMIDDLE\>', '->', 'g')
+				 ->substitute('\<LMIDDLE\>', '->', 'g')
 				 ->substitute('\<LEND\>', '}', 'g')
 				 ->substitute('\<TRUE\>', '1', 'g')
 				 ->substitute('\<FALSE\>', '0', 'g')
-		           	 ->substitute('#"', ' "', 'g'))
+				 ->substitute('#"', ' "', 'g'))
   CheckLegacySuccess(legacylines)
 enddef
 
@@ -262,14 +262,14 @@ export def CheckLegacyAndVim9Failure(lines: list<string>, error: any)
   endif
 
   var legacylines = lines->mapnew((_, v) =>
-  				v->substitute('\<VAR\>', 'let', 'g')
+				v->substitute('\<VAR\>', 'let', 'g')
-		           	 ->substitute('\<LET\>', 'let', 'g')
+				 ->substitute('\<LET\>', 'let', 'g')
-		           	 ->substitute('#"', ' "', 'g'))
+				 ->substitute('#"', ' "', 'g'))
   CheckLegacyFailure(legacylines, legacyError)
 
   var vim9lines = lines->mapnew((_, v) =>
-  				v->substitute('\<VAR\>', 'var', 'g')
+				v->substitute('\<VAR\>', 'var', 'g')
-		           	 ->substitute('\<LET ', '', 'g'))
+				 ->substitute('\<LET ', '', 'g'))
   CheckDefExecFailure(vim9lines, defError)
   CheckScriptFailure(['vim9script'] + vim9lines, scriptError)
 enddef

src/version.c

@@ -695,6 +695,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    1257,
 /**/
     1256,
 /**/