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+;;; ledger-test.el --- Helper code for use with the "ledger" command-line tool
+
+;; Copyright (C) 2003-2016 John Wiegley (johnw AT gnu DOT org)
+
+;; This file is not part of GNU Emacs.
+
+;; This 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 2, or (at your option) any later
+;; version.
+;;
+;; This 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; see the file COPYING.  If not, write to the
+;; Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
+;; MA 02110-1301 USA.
+
+;;; Commentary:
+
+;;; Code:
+
+(declare-function ledger-mode "ledger-mode") ; TODO: fix this cyclic dependency
+(require 'org)
+(require 'outline)
+
+(defgroup ledger-test nil
+  "Definitions for the Ledger testing framework"
+  :group 'ledger)
+
+(defcustom ledger-source-directory "~/ledger/"
+  "Directory where the Ledger sources are located."
+  :type 'directory
+  :group 'ledger-test)
+
+(defcustom ledger-test-binary "/Products/ledger/debug/ledger"
+  "Directory where the Ledger debug binary is located."
+  :type 'file
+  :group 'ledger-test)
+
+;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
+
+(defun ledger-create-test ()
+  "Create a regression test."
+  (interactive)
+  (save-restriction
+    (org-narrow-to-subtree)
+    (save-excursion
+      (let (text beg)
+        (goto-char (point-min))
+        (forward-line 1)
+        (setq beg (point))
+        (search-forward ":PROPERTIES:")
+        (goto-char (line-beginning-position))
+        (setq text (buffer-substring-no-properties beg (point)))
+        (goto-char (point-min))
+        (re-search-forward ":ID:\\s-+\\([^-]+\\)")
+        (find-file-other-window
+         (format "~/src/ledger/test/regress/%s.test" (match-string 1)))
+        (sit-for 0)
+        (insert text)
+        (goto-char (point-min))
+        (while (not (eobp))
+          (goto-char (line-beginning-position))
+          (delete-char 3)
+          (forward-line 1))))))
+
+(defun ledger-test-org-narrow-to-entry ()
+  (outline-back-to-heading)
+  (narrow-to-region (point) (progn (outline-next-heading) (point)))
+  (goto-char (point-min)))
+
+(defun ledger-test-create ()
+  (interactive)
+  (let ((uuid (org-entry-get (point) "ID")))
+    (when (string-match "\\`\\([^-]+\\)-" uuid)
+      (let ((prefix (match-string 1 uuid))
+            input output)
+        (save-restriction
+          (ledger-test-org-narrow-to-entry)
+          (goto-char (point-min))
+          (while (re-search-forward "#\\+begin_src ledger" nil t)
+            (goto-char (match-end 0))
+            (forward-line 1)
+            (let ((beg (point)))
+              (re-search-forward "#\\+end_src")
+              (setq input
+                    (concat (or input "")
+                            (buffer-substring beg (match-beginning 0))))))
+          (goto-char (point-min))
+          (while (re-search-forward ":OUTPUT:" nil t)
+            (goto-char (match-end 0))
+            (forward-line 1)
+            (let ((beg (point)))
+              (re-search-forward ":END:")
+              (setq output
+                    (concat (or output "")
+                            (buffer-substring beg (match-beginning 0)))))))
+        (find-file-other-window
+         (expand-file-name (concat prefix ".test")
+                           (expand-file-name "test/regress"
+                                             ledger-source-directory)))
+        (ledger-mode)
+        (if input
+            (insert input)
+          (insert "2012-03-17 Payee\n")
+          (insert "    Expenses:Food                $20\n")
+          (insert "    Assets:Cash\n"))
+        (insert "\ntest reg\n")
+        (if output
+            (insert output))
+        (insert "end test\n")))))
+
+(defun ledger-test-run ()
+  (interactive)
+  (save-excursion
+    (goto-char (point-min))
+    (when (re-search-forward "^test \\(.+?\\)\\( ->.*\\)?$" nil t)
+      (let ((command (expand-file-name ledger-test-binary))
+            (args (format "--args-only --columns=80 --no-color -f \"%s\" %s"
+                          buffer-file-name (match-string 1))))
+        (setq args (replace-regexp-in-string "\\$sourcepath"
+                                             ledger-source-directory args))
+        (kill-new args)
+        (message "Testing: ledger %s" args)
+        (let ((prev-directory default-directory))
+          (cd ledger-source-directory)
+          (unwind-protect
+              (async-shell-command (format "\"%s\" %s" command args))
+            (cd prev-directory)))))))
+
+(provide 'ledger-test)
+
+;;; ledger-test.el ends here