contrib/hg-test-mode.el
author Augie Fackler <augie@google.com>
Thu, 21 Feb 2019 23:07:54 -0500
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child 46819 d4ba4d51f85f
permissions -rw-r--r--
tests: add test for hg-test-mode emacs code This is just coverage for the compilation-mode support, but that was enough of a hassle that I wanted to have it covered somehow. Test methodology is _extremely_ cargo-culted from the test for compilation-mode in emacs, so I still have no idea what I'm doing. Differential Revision: https://phab.mercurial-scm.org/D6003
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;; hg-test-mode.el - Major mode for editing Mercurial tests
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;;
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;; Copyright 2014 Matt Mackall <mpm@selenic.com>
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;; "I have no idea what I'm doing"
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;;
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;; This software may be used and distributed according to the terms of the
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;; GNU General Public License version 2 or any later version.
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;;
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;; To enable, add something like the following to your .emacs:
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;;
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;; (if (file-exists-p "~/hg/contrib/hg-test-mode.el")
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;;    (load "~/hg/contrib/hg-test-mode.el"))
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(defvar hg-test-mode-hook nil)
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(defvar hg-test-mode-map
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  (let ((map (make-keymap)))
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    (define-key map "\C-j" 'newline-and-indent)
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    map)
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  "Keymap for hg test major mode")
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(add-to-list 'auto-mode-alist '("\\.t\\'" . hg-test-mode))
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(defconst hg-test-font-lock-keywords-1
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  (list
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   '("^  \\(\\$\\|>>>\\) " 1 font-lock-builtin-face)
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   '("^  \\(>\\|\\.\\.\\.\\) " 1 font-lock-constant-face)
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   '("^  \\([[][0-9]+[]]\\)$" 1 font-lock-warning-face)
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   '("^  \\(.*?\\)\\(\\( [(][-a-z]+[)]\\)*\\)$" 1 font-lock-string-face)
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   '("\\$?\\(HG\\|TEST\\)\\w+=?" . font-lock-variable-name-face)
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   '("^  \\(.*?\\)\\(\\( [(][-a-z]+[)]\\)+\\)$" 2 font-lock-type-face)
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   '("^#.*" . font-lock-preprocessor-face)
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   '("^\\([^ ].*\\)$" 1 font-lock-comment-face)
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   )
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  "Minimal highlighting expressions for hg-test mode")
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(defvar hg-test-font-lock-keywords hg-test-font-lock-keywords-1
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  "Default highlighting expressions for hg-test mode")
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(defvar hg-test-mode-syntax-table
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  (let ((st (make-syntax-table)))
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    (modify-syntax-entry ?\" "w" st) ;; disable standard quoting
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    st)
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"Syntax table for hg-test mode")
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(defun hg-test-mode ()
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  (interactive)
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  (kill-all-local-variables)
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  (use-local-map hg-test-mode-map)
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  (set-syntax-table hg-test-mode-syntax-table)
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  (set (make-local-variable 'font-lock-defaults) '(hg-test-font-lock-keywords))
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  (setq major-mode 'hg-test-mode)
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  (setq mode-name "hg-test")
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  (run-hooks 'hg-test-mode-hook))
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(with-eval-after-load "compile"
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  ;; Link to Python sources in tracebacks in .t failures.
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  (add-to-list 'compilation-error-regexp-alist-alist
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               '(hg-test-output-python-tb
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                 "^\\+ +File ['\"]\\([^'\"]+\\)['\"], line \\([0-9]+\\)," 1 2))
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  (add-to-list 'compilation-error-regexp-alist 'hg-test-output-python-tb)
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  ;; Link to source files in test-check-code.t violations.
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  (add-to-list 'compilation-error-regexp-alist-alist
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               '(hg-test-check-code-output
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                 "\\+  \\([^:\n]+\\):\\([0-9]+\\):$" 1 2))
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  (add-to-list 'compilation-error-regexp-alist 'hg-test-check-code-output))
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(defun hg-test-mode--test-one-error-line-regexp (test)
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  (erase-buffer)
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  (setq compilation-locs (make-hash-table))
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  (insert (car test))
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  (compilation-parse-errors (point-min) (point-max))
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  (let ((msg (get-text-property 1 'compilation-message)))
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    (should msg)
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    (let ((loc (compilation--message->loc msg))
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          (line (nth 1 test))
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          (file (nth 2 test)))
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      (should (equal (compilation--loc->line loc) line))
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      (should (equal (caar (compilation--loc->file-struct loc)) file)))
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      msg))
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(require 'ert)
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(ert-deftest hg-test-mode--compilation-mode-support ()
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  "Test hg-specific compilation-mode regular expressions"
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  (require 'compile)
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  (with-temp-buffer
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    (font-lock-mode -1)
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    (mapc 'hg-test-mode--test-one-error-line-regexp
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          '(
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            ("+  contrib/debugshell.py:37:" 37 "contrib/debugshell.py")
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            ("+    File \"/tmp/hg/mercurial/commands.py\", line 3115, in help_"
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             3115 "/tmp/hg/mercurial/commands.py")
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            ("+    File \"mercurial/dispatch.py\", line 225, in dispatch"
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             225 "mercurial/dispatch.py")))))
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(provide 'hg-test-mode)