;;; test-ob-C.el --- tests for ob-C.el  -*- lexical-binding: t; -*-

;; Copyright (c) 2010-2014, 2019 Sergey Litvinov, Thierry Banel
;; Authors: Sergey Litvinov, Thierry Banel

;; This file is not part of GNU Emacs.

;; This program 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.

;; This program 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 this program.  If not, see <https://www.gnu.org/licenses/>.

;;; Code:
(unless (featurep 'ob-C)
  (signal 'missing-test-dependency "Support for C code blocks"))

(ert-deftest ob-C/simple-program ()
  "Hello world program."
  (if (executable-find org-babel-C++-compiler)
      (org-test-at-id "fa6db330-e960-4ea2-ac67-94bb845b8577"
		      (org-babel-next-src-block 1)
		      (should (= 42 (org-babel-execute-src-block))))))

(ert-deftest ob-C/symbol-include ()
  "Hello world program with unquoted :includes."
  (if (executable-find org-babel-C++-compiler)
      (org-test-at-id "fa6db330-e960-4ea2-ac67-94bb845b8577"
		      (org-babel-next-src-block 2)
		      (should (= 42 (org-babel-execute-src-block))))))

(ert-deftest ob-D/simple-program ()
  "Hello world program."
  (if (executable-find org-babel-D-compiler)
      (org-test-at-id "fa6db330-e960-4ea2-ac67-94bb845b8577"
		      (org-babel-next-src-block 3)
		      (should (= 42 (org-babel-execute-src-block))))))

(ert-deftest ob-C/integer-var ()
  "Test of an integer variable."
  (if (executable-find org-babel-C++-compiler)
      (org-test-at-id "fa6db330-e960-4ea2-ac67-94bb845b8577"
		      (org-babel-next-src-block 4)
		      (should (= 12 (org-babel-execute-src-block))))))

(ert-deftest ob-D/integer-var ()
  "Test of an integer variable."
  (if (executable-find org-babel-D-compiler)
      (org-test-at-id "fa6db330-e960-4ea2-ac67-94bb845b8577"
		      (org-babel-next-src-block 5)
		      (should (= 12 (org-babel-execute-src-block))))))

(ert-deftest ob-C/two-integer-var ()
  "Test of two input variables"
  (if (executable-find org-babel-C++-compiler)
      (org-test-at-id "fa6db330-e960-4ea2-ac67-94bb845b8577"
		      (org-babel-next-src-block 6)
		      (should (= 22 (org-babel-execute-src-block))))))

(ert-deftest ob-D/two-integer-var ()
  "Test of two input variables"
  (if (executable-find org-babel-D-compiler)
      (org-test-at-id "fa6db330-e960-4ea2-ac67-94bb845b8577"
		      (org-babel-next-src-block 7)
		      (should (= 22 (org-babel-execute-src-block))))))

(ert-deftest ob-C/string-var ()
  "Test of a string input variable"
  (if (executable-find org-babel-C++-compiler)
      (org-test-at-id "fa6db330-e960-4ea2-ac67-94bb845b8577"
		      (org-babel-next-src-block 8)
		      (should (equal "word 4" (org-babel-execute-src-block))))))

(ert-deftest ob-D/string-var ()
  "Test of a string input variable"
  (if (executable-find org-babel-D-compiler)
      (org-test-at-id "fa6db330-e960-4ea2-ac67-94bb845b8577"
		      (org-babel-next-src-block 9)
		      (should (equal "word 4" (org-babel-execute-src-block))))))

(ert-deftest ob-C/preprocessor ()
  "Test of a string variable"
  (if (executable-find org-babel-C++-compiler)
      (org-test-at-id "fa6db330-e960-4ea2-ac67-94bb845b8577"
		      (org-babel-next-src-block 10)
		      (should (= 42 (org-babel-execute-src-block))))))

(ert-deftest ob-C/float-var ()
  "Test that floats are passed without unnecessary rounding."
  (if (executable-find org-babel-C++-compiler)
      (org-test-with-temp-text 
"#+source: float_var
#+begin_src cpp :var x=1.123456789012345678 :includes \"<iostream>\" :results silent
double y = 1.123456789012345678;
std::cout << (x == y);
#+end_src"
(should (= 1 (org-babel-execute-src-block))))))

(ert-deftest ob-C/table ()
  "Test of a table output"
  (if (executable-find org-babel-C++-compiler)
      (org-test-at-id "2df1ab83-3fa3-462a-a1f3-3aef6044a874"
		      (org-babel-next-src-block 1)
		      (should (equal '((1) (2)) (org-babel-execute-src-block))))))

(ert-deftest ob-D/table ()
  "Test of a table output"
  (if (executable-find org-babel-D-compiler)
      (org-test-at-id "2df1ab83-3fa3-462a-a1f3-3aef6044a874"
		      (org-babel-next-src-block 2)
		      (should (equal '((1) (2)) (org-babel-execute-src-block))))))

(ert-deftest ob-C/list-var ()
  "Test of a list input variable"
  (if (executable-find org-babel-C++-compiler)
      (org-test-at-id "cc65d6b3-8e8e-4f9c-94cd-f5a00cdeceb5"
		      (org-babel-next-src-block 1)
		      (should (string= "abcdef2" (org-babel-execute-src-block))))))

(ert-deftest ob-D/list-var ()
  "Test of a list input variable"
  (if (executable-find org-babel-D-compiler)
      (org-test-at-id "cc65d6b3-8e8e-4f9c-94cd-f5a00cdeceb5"
		      (org-babel-next-src-block 2)
		      (should (string= "abcdef2" (org-babel-execute-src-block))))))

(ert-deftest ob-C/vector-var ()
  "Test of a vector input variable"
  (if (executable-find org-babel-C++-compiler)
      (org-test-at-id "cc65d6b3-8e8e-4f9c-94cd-f5a00cdeceb5"
		      (org-babel-next-src-block 3)
		      (should (equal 122 (org-babel-execute-src-block))))))

(ert-deftest ob-D/vector-var ()
  "Test of a vector input variable"
  (if (executable-find org-babel-D-compiler)
      (org-test-at-id "cc65d6b3-8e8e-4f9c-94cd-f5a00cdeceb5"
		      (org-babel-next-src-block 4)
		      (should (equal 122 (org-babel-execute-src-block))))))

(ert-deftest ob-C/list-list-var ()
  "Test of a list list input variable"
  (if (executable-find org-babel-C++-compiler)
      (org-test-at-id "cc65d6b3-8e8e-4f9c-94cd-f5a00cdeceb5"
		      (org-babel-next-src-block 5)
		      (should (equal '((1 3) (2 4)) (org-babel-execute-src-block))))))

(ert-deftest ob-D/list-list-var ()
  "Test of a list list input variable"
  (if (executable-find org-babel-D-compiler)
      (org-test-at-id "cc65d6b3-8e8e-4f9c-94cd-f5a00cdeceb5"
		      (org-babel-next-src-block 6)
		      (should (equal '((1 3) (2 4)) (org-babel-execute-src-block))))))

(ert-deftest ob-C/inhomogeneous_table ()
  "Test inhomogeneous input table"
  (if (executable-find org-babel-C++-compiler)
      (org-test-at-id "e112bc2e-419a-4890-99c2-7ac4779531cc"
		      (org-babel-next-src-block 1)
		      (should (equal
			       '(("monday" 34)
				 ("tuesday" 41)
				 ("wednesday" 56)
				 ("thursday" 17)
				 ("friday" 12)
				 ("saturday" 7)
				 ("sunday" 4)
				 ("Friday" "friday"))
			       (org-babel-execute-src-block))))))

(ert-deftest ob-D/inhomogeneous_table ()
  "Test inhomogeneous input table"
  (if (executable-find org-babel-D-compiler)
      (org-test-at-id "e112bc2e-419a-4890-99c2-7ac4779531cc"
		      (org-babel-next-src-block 2)
		      (should (equal
			       '(("monday" 34)
				 ("tuesday" 41)
				 ("wednesday" 56)
				 ("thursday" 17)
				 ("friday" 12)
				 ("saturday" 7)
				 ("sunday" 4)
				 ("Friday" "friday"))
			       (org-babel-execute-src-block))))))

(ert-deftest ob-C/ouput-doublequotes ()
  "Double quotes not swallowed in raw output"
  (if (executable-find org-babel-C++-compiler)
      (org-test-at-id "9386490b-4063-4400-842c-4a634edbedf5"
                      (org-babel-next-src-block 1)
                      (should (equal
                               "\"line 1\"\n\"line 2\"\n\"line 3\"\n"
                               (org-babel-execute-src-block))))))

(ert-deftest ob-C/compile-only-1 ()
  "Test `:compile-only' header argument."
  (if (executable-find org-babel-C++-compiler)
      (unwind-protect
          (let* ((file (make-temp-name "hello-world-"))
                 (file.cpp (concat file ".cpp")))
            (org-test-with-temp-text
                (format "#+source: compile-only-1
#+begin_src cpp :includes <iostream> :results none :compile-only yes :file %s
std::cout << \"Hello World!\\n\";
#+end_src
" file)
              (should (null (org-babel-execute-src-block)))
              (should (file-exists-p file))
              (should (file-exists-p file.cpp))))
        (ignore-errors (delete-file file))
        (ignore-errors (delete-file file.cpp)))))

(ert-deftest ob-C/compile-only-2 ()
  "Test `:compile-only' header argument.
A link to the binary file should be inserted."
  (if (executable-find org-babel-C++-compiler)
      (unwind-protect
          (let* ((file (make-temp-name "hello-world-"))
                 (file.cpp (concat file ".cpp")))
            (org-test-with-temp-text
                (format "#+source: compile-only-2
#+begin_src cpp :includes <iostream> :results file :compile-only yes :file %s
std::cout << \"Hello World!\\n\";
#+end_src
" file)
              (should (string= file (org-babel-execute-src-block)))
              (should (file-exists-p file))
              (should (file-exists-p file.cpp))))
        (ignore-errors (delete-file file))
        (ignore-errors (delete-file file.cpp)))))

(ert-deftest ob-C/compile-only-3 ()
  "Test `:compile-only' header argument.
The :file header is unset, which throws an error."
  (if (executable-find org-babel-C++-compiler)
      (org-test-with-temp-text
          (format "#+source: compile-only-3
#+begin_src cpp :includes <iostream> :results file :compile-only yes
std::cout << \"Hello World!\\n\";
#+end_src
")
        (should-error (org-babel-execute-src-block)))))

(ert-deftest ob-C/compile-only-4 ()
  "Test `:compile-only' header argument.

A C++ syntax error throws a compiler error.  The compiler's error
output is caught in `org-babel-error-buffer-name'; that buffer's
contents are the result of the source block."
  (if (executable-find org-babel-C++-compiler)
      (unwind-protect
          (let* ((file (make-temp-name "hello-world-"))
                 (file.cpp (concat file ".cpp")))
            (org-test-with-temp-text
                (format "#+source: compile-only-4.0
#+begin_src cpp :includes <iostream> :results output :compile-only yes :file %s
std::cout << \"Hello World!\\n\" <== syntax error
#+end_src
" file)
              (should (string-match "error:" (org-babel-execute-src-block)))
              (should (get-buffer org-babel-error-buffer-name))
              (should (file-exists-p file.cpp))))
        (ignore-errors (kill-buffer org-babel-error-buffer-name))
        (ignore-errors (delete-file file))
        (ignore-errors (delete-file file.cpp)))))

(ert-deftest ob-C/compile-only-5 ()
  "Test `:compile-only' header argument.

A C++ warning is emitted on stderr.  The compiler's warning is
caught in `org-babel-error-buffer-name'; that buffer's contents
are the result of the source block."
  (if (executable-find org-babel-C++-compiler)
      (unwind-protect
          (let* ((file (make-temp-name "hello-world-"))
                 (file.cpp (concat file ".cpp")))
            (org-test-with-temp-text
                (format "#+source: compile-only-4.0
#+begin_src cpp :includes <iostream> :flags -Wall :results output :compile-only yes :file %s
int i;
std::cout << \"Hello World!\\n\";
#+end_src
" file)
              (should (string-match "warning:" (org-babel-execute-src-block)))
              (should (get-buffer org-babel-error-buffer-name))
              (should (file-exists-p file.cpp))))
        (ignore-errors (kill-buffer org-babel-error-buffer-name))
        (ignore-errors (delete-file file))
        (ignore-errors (delete-file file.cpp)))))


(provide 'test-ob-C)
;;; test-ob-C.el ends here