;;; semantic-utest.el --- Tests for semantic's parsing system. -*- lexical-binding:t -*-

;; Copyright (C) 2003-2025 Free Software Foundation, Inc.

;; Author: Eric M. Ludlam <zappo@gnu.org>

;; This file is part of GNU Emacs.

;; GNU Emacs is free software: you can redistribute it and/or modify
;; it under the terms of the GNU General Public License as published by
;; the Free Software Foundation, either version 3 of the License, or
;; (at your option) any later version.

;; GNU Emacs is distributed in the hope that it will be useful,
;; but WITHOUT ANY WARRANTY; without even the implied warranty of
;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
;; GNU General Public License for more details.

;; You should have received a copy of the GNU General Public License
;; along with GNU Emacs.  If not, see <https://www.gnu.org/licenses/>.

;;; Commentary:
;;
;; Semantic's parsing and partial parsing system is pretty complex.
;; These unit tests attempt to emulate semantic's partial reparsing
;; and full reparsing system, and anything else I may feel the urge
;; to write a test for.

(require 'cedet)
(require 'semantic)

;;; Code:

(defvar cedet-utest-directory
  (let* ((C (file-name-directory (locate-library "cedet")))
         (D (expand-file-name "../../test/manual/cedet/" C)))
    D)
  "Location of test files for this test suite.")

(defvar semantic-utest-test-directory (expand-file-name "tests" cedet-utest-directory)
  "Location of test files.")

(defun semantic-utest-fname (name)
  "Create a filename for NAME in /tmp."
  (expand-file-name name temporary-file-directory))

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;; Data for C tests

(defvar semantic-utest-C-buffer-contents
  "/* Test file for C language for Unit Tests */

#include <stdio.h>
#include \"sutest.h\"

struct mystruct1 {
  int slot11;
  char slot12;
  float slot13;
};

int var1;

float funp1(char arg11, char arg12);

char fun2(int arg_21, int arg_22) /*1*/
{
  struct mystruct1 *ms1 = malloc(sizeof(struct mystruct1));

  char sv = calc_sv(var1);

  if (var1 == 0) {
     sv = 1;
  } else if (arg_21 == 0) {
     sv = 2;
  } else if (arg_22 == 0) {
     sv = 3;
  } else {
     sv = 4;
  }

  printf(\"SV = %d\\n\", sv);

  /* Memory Leak */
  ms1.slot1 = sv;

  return 'A' + sv;
}
"
  "Contents of a C buffer initialized by this unit test.
Be sure to change `semantic-utest-C-name-contents' when you
change this variable.")

(defvar semantic-utest-C-h-buffer-contents
  "/* Test file for C language header file for Unit Tests */

int calc_sv(int);

"
  "Contents of a C header file buffer initialized by this unit test.")

(defvar semantic-utest-C-filename (semantic-utest-fname "sutest.c")
  "File to open and erase during this test for C.")

(defvar semantic-utest-C-filename-h
  (concat (file-name-sans-extension semantic-utest-C-filename)
	  ".h")
  "Header file filename for C.")


(defvar semantic-utest-C-name-contents
  '(("stdio.h" include
     (:system-flag t)
     nil (overlay 48 66 "sutest.c"))
    ("sutest.h" include nil nil (overlay 67 86 "sutest.c"))
    ("mystruct1" type
     (:members
      (("slot11" variable
	(:type "int")
	(reparse-symbol classsubparts)
	(overlay 109 120 "sutest.c"))
       ("slot12" variable
	(:type "char")
	(reparse-symbol classsubparts)
	(overlay 123 135 "sutest.c"))
       ("slot13" variable
	(:type "float")
	(reparse-symbol classsubparts)
	(overlay 138 151 "sutest.c")))
      :type "struct")
     nil (overlay 88 154 "sutest.c"))
    ("var1" variable
     (:type "int")
     nil (overlay 156 165 "sutest.c"))
    ("funp1" function
     (:prototype-flag t :arguments
		      (("arg11" variable
			(:type "char")
			(reparse-symbol arg-sub-list)
			(overlay 179 190 "sutest.c"))
		       ("arg12" variable
			(:type "char")
			(reparse-symbol arg-sub-list)
			(overlay 191 202 "sutest.c")))
		      :type "float")
     nil (overlay 167 203 "sutest.c"))
    ("fun2" function
     (:arguments
      (("arg_21" variable
	(:type "int")
	(reparse-symbol arg-sub-list)
	(overlay 215 226 "sutest.c"))
       ("arg_22" variable
	(:type "int")
	(reparse-symbol arg-sub-list)
	(overlay 227 238 "sutest.c")))
      :type "char")
     nil (overlay 205 566 "sutest.c")))
  "List of expected tag names for C.")


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;; Data for Python tests

(defvar semantic-utest-Python-buffer-contents
"
def fun1(a,b,c):
  return a

def fun2(a,b,c): #1
  return b

"


)
;  "python test case. notice that python is indentation sensitive


(defvar semantic-utest-Python-name-contents
  '(("fun1" function
     (:arguments
      (("a" variable nil
        (reparse-symbol function_parameters)
	(overlay 10 11 "tst.py"))
       ("b" variable nil
        (reparse-symbol function_parameters)
        (overlay 12 13 "tst.py"))
       ("c" variable nil
        (reparse-symbol function_parameters)
        (overlay 14 15 "tst.py"))))
     nil (overlay 1 31 "tst.py"))
    ("fun2" function
     (:arguments
      (("a" variable nil
        (reparse-symbol function_parameters)
        (overlay 41 42 "tst.py"))
       ("b" variable nil
        (reparse-symbol function_parameters)
        (overlay 43 44 "tst.py"))
       ("c" variable nil
        (reparse-symbol function_parameters)
        (overlay 45 46 "tst.py"))))
     nil (overlay 32 65 "tst.py")))

  "List of expected tag names for Python.")



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;; Data for Java tests

(defvar semantic-utest-Java-buffer-contents
"
class JavaTest{
  void fun1(int a,int b){
    return a;
  }

  void fun2(int a,int b){ //1
    return b;
  }

}
"
)

(defvar semantic-utest-Java-name-contents
  '(("JavaTest" type
     (:members
      (("fun1" function
        (:arguments
         (("a" variable
           (:type "int")
           (reparse-symbol formal_parameters)
           (overlay 30 35 "JavaTest.java"))
	  ("b" variable
	   (:type "int")
	   (reparse-symbol formal_parameters)
	   (overlay 36 41 "JavaTest.java")))
         :type "void")
        (reparse-symbol class_member_declaration)
        (overlay 20 61 "JavaTest.java"))
       ("fun2" function
	(:arguments
	 (("a" variable
	   (:type "int")
	   (reparse-symbol formal_parameters)
	   (overlay 75 80 "JavaTest.java"))
	  ("b" variable
	   (:type "int")
	   (reparse-symbol formal_parameters)
	   (overlay 81 86 "JavaTest.java")))
	 :type "void")
	(reparse-symbol class_member_declaration)
	(overlay 65 110 "JavaTest.java")))
      :type "class")
     nil (overlay 2 113 "JavaTest.java")))
  "List of expected tag names for Java."
  )


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;; Data for Javascript tests

(defvar semantic-utest-Javascript-buffer-contents
"
function fun1(a, b){
    return a;
  }

function fun2(a,b){ //1
    return b;
  }
"
)


(defvar semantic-utest-Javascript-name-contents
  '(("fun1" function
     (:arguments
      (("a" variable nil
	(reparse-symbol FormalParameterList)
	(overlay 15 16 "tst.js"))
       ("b" variable nil
	(reparse-symbol FormalParameterList)
	(overlay 18 19 "tst.js"))))
     nil (overlay 1 39 "tst.js"))
    ("fun2" function
     (:arguments
      (("a" variable nil
	(reparse-symbol FormalParameterList)
	(overlay 55 56 "tst.js"))
       ("b" variable nil
	(reparse-symbol FormalParameterList)
	(overlay 57 58 "tst.js"))))
     nil (overlay 41 82 "tst.js")))

  "List of expected tag names for Javascript.")



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;; Data for Makefile tests

(defvar semantic-utest-Makefile-buffer-contents
"
t1:
\techo t1

t2:t1 #1
\techo t2


"
)


(defvar semantic-utest-Makefile-name-contents
  '(("t1" function nil nil (overlay 1 9 "Makefile"))
    ("t2" function
     (:arguments
      ("t1"))
     nil (overlay 18 28 "Makefile")))
  "List of expected tag names for Makefile.")


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;; Data for Scheme tests

(defvar semantic-utest-Scheme-buffer-contents
  "
 (define fun1 2)

 (define fun2 3)  ;1

")

(defvar semantic-utest-Scheme-name-contents
  '(("fun1" variable
     (:default-value ("2"))
     nil (overlay 3 18 "tst.scm"))
    ("fun2" variable
     (:default-value ("3"))
     nil (overlay 21 55 "tst.scm")))
  )

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;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;; Data for Html tests

(defvar semantic-utest-Html-buffer-contents
  "
<html>
  <body>
    <h1>hello</h1>
  </body><!--1-->
</html>
"
  )

(defvar semantic-utest-Html-name-contents
  '(("hello" section
     (:members
      (("hello" section nil nil (overlay 21 24 "tst.html"))))
     nil (overlay 10 15 "tst.html")))
  )


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;; Data for PHP tests

(defvar semantic-utest-PHP-buffer-contents
  "<?php

function fun1(){
   return \"fun1\";
}

function fun2($arg1){
   $output = \"argument to fun2: \" . $arg1;
   return $output;
}

class aClass {
   public function fun1($a, $b){
      return $a;
   }

   public function fun2($a, $b){
      return $b;
   }
}
?> "
  )

(defvar semantic-utest-PHP-name-contents
  '(("fun1" function nil
     nil (overlay 9 45 "phptest.php"))
    ("fun2" function
     (:arguments (("$arg1" variable nil (reparse-symbol formal_parameters) (overlay 61 66 "phptest.php"))))
     nil
     (overlay 47 132 "phptest.php"))
    ("aClass" type
     (:members (("fun1" function
		 (:typemodifiers ("public") :arguments
				 (("$a" variable nil (reparse-symbol formal_parameters) (overlay 174 176 "phptest.php"))
				  ("$b" variable nil (reparse-symbol formal_parameters) (overlay 178 180 "phptest.php"))))

		 nil
		 (overlay 153 204 "phptest.php"))

		("fun2" function
		 (:typemodifiers ("public") :arguments
				 (("$a" variable nil (reparse-symbol formal_parameters) (overlay 230 232 "phptest.php"))
				  ("$b" variable nil (reparse-symbol formal_parameters) (overlay 234 236 "phptest.php"))
				  ))
		 nil
		 (overlay 209 260 "phptest.php"))) :type "class")
     nil
     (overlay 135 262 "phptest.php"))
    )
  "Expected results from the PHP Unit test.")

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;; Data for Csharp C# tests

(defvar semantic-utest-Csharp-buffer-contents
"
class someClass {
  int fun1(int a, int b) {
    return a; }
  int fun2(int a, int b) {
    return b; }
}
")

(defvar semantic-utest-Csharp-name-contents
  '(("someClass" type
     (:members
      (("fun1" function
	(:arguments
	 (("a" variable
	   (:type "int")
	   (reparse-symbol formal_parameters)
	   (overlay 30 35 "tst.cs"))
	  ("b" variable
	   (:type "int")
	   (reparse-symbol formal_parameters)
	   (overlay 37 42 "tst.cs")))
	 :type "int")
	(reparse-symbol class_member_declaration)
	(overlay 21 61 "tst.cs"))
       ("fun2" function
	(:arguments
	 (("a" variable
	   (:type "int")
	   (reparse-symbol formal_parameters)
	   (overlay 73 78 "tst.cs"))
	  ("b" variable
	   (:type "int")
	   (reparse-symbol formal_parameters)
	   (overlay 80 85 "tst.cs")))
	 :type "int")
	(reparse-symbol class_member_declaration)
	(overlay 64 104 "tst.cs")))
      :type "class")
     nil (overlay 1 106 "tst.cs")))
  )


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(defun semantic-utest-makebuffer (filename contents)
  "Create a buffer for FILENAME for use in a unit test.
Pre-fill the buffer with CONTENTS."
  (let ((buff (semantic-find-file-noselect filename)))
    (set-buffer buff)
    (setq buffer-offer-save nil)
    (font-lock-mode -1) ;; Font lock has issues in Emacs 23
    (read-only-mode -1) ;; In case /tmp doesn't exist
    (erase-buffer)
    (insert contents)
    ;(semantic-fetch-tags) ;JAVE could this go here?
    (set-buffer-modified-p nil)
    buff
    )
  )

(ert-deftest semantic-utest-C ()
  "Run semantic's C unit test."
  (semantic-mode 1)
  (save-excursion
    (let ((buff  (semantic-utest-makebuffer semantic-utest-C-filename   semantic-utest-C-buffer-contents))
	  (buff2 (semantic-utest-makebuffer semantic-utest-C-filename-h semantic-utest-C-h-buffer-contents))
	  )
      (semantic-fetch-tags)
      (set-buffer buff)

      ;; Turn off a range of modes
      (semantic-idle-scheduler-mode -1)

      ;; Turn on some modes
      (semantic-highlight-edits-mode 1)

      ;; Update tags, and show it.
      (semantic-fetch-tags)

      ;; Run the tests.
      ;;(message "First parsing test.")
      (should (semantic-utest-verify-names semantic-utest-C-name-contents))

      ;;(message "Invalid tag test.")
      (semantic-utest-last-invalid semantic-utest-C-name-contents '("fun2") "/\\*1\\*/" "/* Deleted this line */")
      (should (semantic-utest-verify-names semantic-utest-C-name-contents))

      (set-buffer-modified-p nil)
      ;; Clean up
      (kill-buffer buff)
      (kill-buffer buff2)
      )))




(defun semantic-utest-generic (filename contents name-contents names-removed killme insertme)
  "Generic unit test according to template.
Should work for languages without .h files, python javascript java.
FILENAME is the name of the file to create.
CONTENTS is the contents of the file to test.
NAME-CONTENTS is the list of names that should be in the contents.
NAMES-REMOVED is the list of names that gets removed in the removal step.
KILLME is the name of items to be killed.
INSERTME is the text to be inserted after the deletion."
  (semantic-mode 1)
  (save-excursion
    (let ((buff  (semantic-utest-makebuffer filename  contents))
	  )
      ;; Turn off a range of modes
      (semantic-idle-scheduler-mode -1)

      ;; Turn on some modes
      (semantic-highlight-edits-mode 1)

      ;; Update tags, and show it.
      (semantic-clear-toplevel-cache)
      (semantic-fetch-tags)
      (switch-to-buffer buff)
      (sit-for 0)

      ;; Run the tests.
      (should (semantic-utest-verify-names name-contents))

      (semantic-utest-last-invalid name-contents names-removed killme insertme)
      (should (semantic-utest-verify-names name-contents))

      (set-buffer-modified-p nil)
      ;; Clean up
      (kill-buffer buff)
      )))

(defvar python-indent-guess-indent-offset) ; Silence byte-compiler.
(ert-deftest semantic-utest-Python()
  (skip-unless (fboundp 'python-mode))
  (let ((python-indent-guess-indent-offset nil))
    (semantic-utest-generic (semantic-utest-fname "pytest.py") semantic-utest-Python-buffer-contents  semantic-utest-Python-name-contents   '("fun2") "#1" "#deleted line")
    ))


(ert-deftest semantic-utest-Javascript()
  (skip-unless (fboundp 'javascript-mode))
  (semantic-utest-generic (semantic-utest-fname "javascripttest.js") semantic-utest-Javascript-buffer-contents  semantic-utest-Javascript-name-contents   '("fun2") "//1" "//deleted line"))

(ert-deftest semantic-utest-Java()
  ;; If JDE is installed, it might mess things up depending on the version
  ;; that was installed.
  (let ((auto-mode-alist  '(("\\.java\\'" . java-mode))))
    (semantic-utest-generic (semantic-utest-fname "JavaTest.java") semantic-utest-Java-buffer-contents  semantic-utest-Java-name-contents   '("fun2") "//1" "//deleted line")
    ))

(ert-deftest semantic-utest-Makefile()
  (semantic-utest-generic (semantic-utest-fname "Makefile") semantic-utest-Makefile-buffer-contents  semantic-utest-Makefile-name-contents   '("fun2") "#1" "#deleted line")
  )

(ert-deftest semantic-utest-Scheme()
  (skip-unless nil) ;; There is a bug with scheme parser.  Skip this for now.
  (semantic-utest-generic (semantic-utest-fname "tst.scm") semantic-utest-Scheme-buffer-contents  semantic-utest-Scheme-name-contents   '("fun2") ";1" ";deleted line")
  )

(defvar html-helper-build-new-buffer) ; Silence byte-compiler.
(ert-deftest semantic-utest-Html()
  ;; Disable html-helper auto-fill-in mode.
  (let ((html-helper-build-new-buffer nil)) ; FIXME: Why is this bound?
    (semantic-utest-generic (semantic-utest-fname "tst.html") semantic-utest-Html-buffer-contents  semantic-utest-Html-name-contents   '("fun2") "<!--1-->" "<!--deleted line-->")
    ))

(ert-deftest semantic-utest-PHP()
  (skip-unless (featurep 'php-mode))
  (semantic-utest-generic (semantic-utest-fname "phptest.php") semantic-utest-PHP-buffer-contents semantic-utest-PHP-name-contents '("fun1") "fun2" "%^@")
  )

(ert-deftest semantic-utest-Csharp() ;; hmm i don't even know how to edit a scharp file. need a csharp mode implementation i suppose
  (skip-unless (featurep 'csharp-mode))
  (semantic-utest-generic (semantic-utest-fname "csharptest.cs") semantic-utest-Csharp-buffer-contents  semantic-utest-Csharp-name-contents   '("fun2") "//1" "//deleted line")
  )

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;; stubs

;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
; stuff for Erlang
;;-module(hello).
;-export([hello_world/0]).
;
;hello_world()->
;    io:format("Hello World ~n").
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;(defun semantic-utest-Erlang()
;  (interactive)
;  (semantic-utest-generic "Erlang" (semantic-utest-fname "tst.erl") semantic-utest-Erlang-buffer-contents  semantic-utest-Erlang-name-contents   '("fun2") "//1" "//deleted line")
;  )
;
;;texi is also supported
;(defun semantic-utest-Texi()
;  (interactive)
;  (semantic-utest-generic "texi" (semantic-utest-fname "tst.texi") semantic-utest-Texi-buffer-contents  semantic-utest-Texi-name-contents   '("fun2") "//1" "//deleted line")
;  )

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;;; Buffer contents validation
;;
(defun semantic-utest-match-attributes (attr1 attr2 skipnames)
  "Compare attribute lists ATTR1 and ATTR2.
Argument SKIPNAMES is a list of names that may be child nodes to skip."
  (let ((res t))
    (while (and res attr1 attr2)

      ;; Compare
      (setq res
	    (cond ((and (listp (car attr1))
			(semantic-tag-p (car (car attr1))))
		   ;; Compare the list of tags...
		   (semantic-utest-taglists-equivalent-p
		    (car attr2) (car attr1) skipnames)
		   )
		  (t
		   (equal (car attr1) (car attr2)))))

      (if (not res)
	  (error "TAG INTERNAL DIFF: %S %S"
		 (car attr1) (car attr2)))

      (setq attr1 (cdr attr1)
	    attr2 (cdr attr2)))
    res))

(defun semantic-utest-equivalent-tag-p (tag1 tag2 skipnames)
  "Determine if TAG1 and TAG2 are the same.
SKIPNAMES includes lists of possible child nodes that should be missing."
  (and (equal (semantic-tag-name tag1) (semantic-tag-name tag2))
       (semantic-tag-of-class-p tag1 (semantic-tag-class tag2))
       (semantic-utest-match-attributes
	(semantic-tag-attributes tag1) (semantic-tag-attributes tag2)
	skipnames)
       ))

(defun semantic-utest-taglists-equivalent-p (table names skipnames)
  "Compare TABLE and NAMES, where skipnames allow list1 to be different.
SKIPNAMES is a list of names that should be skipped in the NAMES list."
  (let ((SN skipnames))
    (while SN
      (setq names (remove (car SN) names))
      (setq SN (cdr SN))))
  (catch 'utest-err
    (while (and names table)
      (when (not (semantic-utest-equivalent-tag-p (car names)
					        (car table)
					        skipnames))
	(message "Semantic Parse Test Fail: Expected %s, found %s"
	         (semantic-format-tag-prototype (car names))
	         (semantic-format-tag-prototype (car table)))
        (throw 'utest-err nil)
        )
      (setq names (cdr names)
	    table (cdr table)))
    (when names
      (message "Semantic Parse Test Fail: Items forgotten: %S" (mapcar 'semantic-tag-name names))
      (throw 'utest-err nil))
    (when table
      (message "Semantic parse Test Fail: Items extra: %S" (mapcar 'semantic-tag-name table))
      (throw 'utest-err nil))
    t))

(defun semantic-utest-verify-names (name-contents &optional skipnames)
  "Verify the names of the test buffer from NAME-CONTENTS.
Argument SKIPNAMES is a list of names that should be skipped
when analyzing the file.

JAVE this thing would need to be recursive to handle java and csharp"
  (let ((names name-contents)
	(table (semantic-fetch-tags))
	)
    (semantic-utest-taglists-equivalent-p table names skipnames)
    ))


;;; Kill indicator line
;;
;; Utilities to modify the buffer for reparse, making sure a specific tag is deleted
;; via the incremental parser.

(defvar semantic-utest-last-kill-text nil
  "The text from the last kill.")

(defvar semantic-utest-last-kill-pos nil
  "The position of the last kill.")

(defun semantic-utest-kill-indicator ( killme insertme)
  "Kill the line with KILLME on it and insert INSERTME in its place."
  (goto-char (point-min))
;  (re-search-forward (concat "/\\*" indicator "\\*/")); JAVE this isn't generic enough for different languages
  (re-search-forward killme)
  (beginning-of-line)
  (setq semantic-utest-last-kill-pos (point))
  (setq semantic-utest-last-kill-text
        (buffer-substring (point) (pos-eol)))
  (delete-region (point) (pos-eol))
  (insert insertme)
  (sit-for 0)
)

(defun semantic-utest-unkill-indicator ()
  "Unkill the last indicator."
  (goto-char semantic-utest-last-kill-pos)
  (delete-region (point) (pos-eol))
  (insert semantic-utest-last-kill-text)
  (sit-for 0)
  )

(defun semantic-utest-last-invalid (_name-contents _names-removed killme insertme)
  "Make the last fcn invalid."
  (semantic-utest-kill-indicator killme insertme)
;  (semantic-utest-verify-names name-contents names-removed); verify its gone ;new validator doesn't handle skipnames yet
  (semantic-utest-unkill-indicator);put back killed stuff
  )



;;; semantic-utest.el ends here