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;;; test-org-drill-explain-and-language-cards.el --- Tests for explain helpers and language card info getters -*- lexical-binding: t; -*-
;;; Commentary:
;; Tests for:
;;
;; - `org-drill-explain-entry-p': checks the `explain' tag. Used by
;; `org-drill-get-explain-text' to walk up the outline collecting
;; explanation prose from parent headings.
;; - `org-drill-end-of-entry-pos': simple position helper.
;; - `org-drill-get-verb-conjugation-info': read VERB_* properties for
;; conjugate-style cards. Returns (INFINITIVE HINT TRANSLATION TENSE MOOD).
;; - `org-drill-get-noun-info': read NOUN_* properties for declension
;; cards. Returns (NOUN ROOT GENDER HINT TRANSLATION).
;;
;; Both info getters use `read-from-string' on property values, so the
;; properties must be stored as Lisp-readable strings (typically
;; quoted: `"house"' rather than `house').
;;; Code:
(require 'ert)
(require 'org)
(require 'org-drill)
;;;; Helpers
(defmacro with-org-buffer (content &rest body)
(declare (indent 1))
`(with-temp-buffer
(let ((org-startup-folded nil))
(insert ,content)
(org-mode)
(goto-char (point-min))
,@body)))
;;;; org-drill-explain-entry-p
(ert-deftest test-org-drill-explain-entry-p-with-explain-tag-returns-t ()
(with-org-buffer "* Entry :explain:\n"
(should (org-drill-explain-entry-p))))
(ert-deftest test-org-drill-explain-entry-p-without-tag-returns-nil ()
(with-org-buffer "* Entry :drill:\n"
(should-not (org-drill-explain-entry-p))))
(ert-deftest test-org-drill-explain-entry-p-no-tags-returns-nil ()
(with-org-buffer "* Plain entry\n"
(should-not (org-drill-explain-entry-p))))
(ert-deftest test-org-drill-explain-entry-p-no-inherit-flag-rejects-inherited ()
"When NO-INHERIT is non-nil, only direct tags count — inherited ones don't."
(with-org-buffer "* Parent :explain:\n** Child\n"
;; Move to the child heading
(goto-char (point-max))
(forward-line -1)
(org-back-to-heading t)
(should (org-drill-explain-entry-p)) ; default: inherit, finds parent's
(should-not (org-drill-explain-entry-p t)))) ; no-inherit: only direct, none
;;;; org-drill-end-of-entry-pos
(ert-deftest test-org-drill-end-of-entry-pos-returns-end-of-subtree ()
"On a single-heading buffer, returns the end of the only subtree.
`org-end-of-subtree' returns the position just before the trailing
newline, so the result lands at point-max or point-max - 1 depending
on whether the buffer ends with a newline."
(with-org-buffer "* Entry\nbody line\n"
(let ((got (org-drill-end-of-entry-pos)))
(should (or (= got (point-max))
(= got (1- (point-max))))))))
(ert-deftest test-org-drill-end-of-entry-pos-stops-at-next-sibling ()
"Returns the position just before the next same-level heading."
(with-org-buffer "* First\nbody A\n* Second\nbody B\n"
(goto-char (point-min))
(let ((end-pos (org-drill-end-of-entry-pos)))
(goto-char end-pos)
;; The end-pos should be at-or-before the start of the second heading.
(should (<= (point) (save-excursion
(goto-char (point-min))
(re-search-forward "^\\* Second" nil t)
(line-beginning-position)))))))
;;;; org-drill-get-verb-conjugation-info
(ert-deftest test-org-drill-get-verb-conjugation-info-reads-all-properties ()
"Returns (INFINITIVE HINT TRANSLATION TENSE MOOD) parsed from quoted strings."
(with-org-buffer "* Verb :drill:\n"
(org-set-property "VERB_INFINITIVE" "\"hablar\"")
(org-set-property "VERB_INFINITIVE_HINT" "\"talk\"")
(org-set-property "VERB_TRANSLATION" "\"to speak\"")
(org-set-property "VERB_TENSE" "\"present\"")
(org-set-property "VERB_MOOD" "\"indicative\"")
(let ((info (org-drill-get-verb-conjugation-info)))
(should (equal "hablar" (substring-no-properties (nth 0 info))))
(should (equal "talk" (substring-no-properties (nth 1 info))))
(should (equal "to speak" (substring-no-properties (nth 2 info))))
(should (equal "present" (substring-no-properties (nth 3 info))))
(should (equal "indicative" (substring-no-properties (nth 4 info)))))))
(ert-deftest test-org-drill-get-verb-conjugation-info-tense-only-no-mood ()
"TENSE alone is sufficient — MOOD is optional as long as one of the two is set."
(with-org-buffer "* Verb :drill:\n"
(org-set-property "VERB_INFINITIVE" "\"hablar\"")
(org-set-property "VERB_TRANSLATION" "\"to speak\"")
(org-set-property "VERB_TENSE" "\"present\"")
(let ((info (org-drill-get-verb-conjugation-info)))
(should (equal "present" (substring-no-properties (nth 3 info))))
(should (null (nth 4 info))))))
(ert-deftest test-org-drill-get-verb-conjugation-info-missing-required-errors ()
"Missing infinitive/translation/tense+mood → user-visible error."
(with-org-buffer "* Verb :drill:\n"
(org-set-property "VERB_INFINITIVE" "\"hablar\"")
;; missing translation → should error
(should-error (org-drill-get-verb-conjugation-info))))
(ert-deftest test-org-drill-get-verb-conjugation-info-applies-tense-color ()
"TENSE foreground color comes from `org-drill-verb-tense-alist'."
(with-org-buffer "* Verb :drill:\n"
(org-set-property "VERB_INFINITIVE" "\"hablar\"")
(org-set-property "VERB_TRANSLATION" "\"to speak\"")
(org-set-property "VERB_TENSE" "\"present\"")
(let* ((info (org-drill-get-verb-conjugation-info))
(face (get-text-property 0 'face (nth 0 info))))
;; Face should be a plist with :foreground set to a color string.
(should (plist-get face :foreground))
(should (stringp (plist-get face :foreground))))))
;;;; org-drill-get-noun-info
(ert-deftest test-org-drill-get-noun-info-reads-all-properties ()
"Returns (NOUN ROOT GENDER HINT TRANSLATION) parsed from quoted strings."
(with-org-buffer "* Noun :drill:\n"
(org-set-property "NOUN" "\"casa\"")
(org-set-property "NOUN_ROOT" "\"cas\"")
(org-set-property "NOUN_GENDER" "\"feminine\"")
(org-set-property "NOUN_HINT" "\"home\"")
(org-set-property "NOUN_TRANSLATION" "\"house\"")
(let ((info (org-drill-get-noun-info)))
(should (equal "casa" (substring-no-properties (nth 0 info))))
(should (equal "cas" (nth 1 info)))
(should (equal "feminine" (nth 2 info)))
(should (equal "home" (nth 3 info)))
(should (equal "house" (substring-no-properties (nth 4 info)))))))
(ert-deftest test-org-drill-get-noun-info-missing-noun-or-translation-errors ()
(with-org-buffer "* Noun :drill:\n"
(org-set-property "NOUN" "\"casa\"")
(org-set-property "NOUN_GENDER" "\"feminine\"")
;; missing NOUN_TRANSLATION
(should-error (org-drill-get-noun-info))))
(ert-deftest test-org-drill-get-noun-info-gender-color-from-alist ()
"Feminine gender → orchid foreground via `org-drill-noun-gender-alist'."
(with-org-buffer "* Noun :drill:\n"
(org-set-property "NOUN" "\"casa\"")
(org-set-property "NOUN_GENDER" "\"feminine\"")
(org-set-property "NOUN_TRANSLATION" "\"house\"")
(let* ((info (org-drill-get-noun-info))
(face (get-text-property 0 'face (nth 0 info))))
(should (equal "orchid" (plist-get face :foreground))))))
(ert-deftest test-org-drill-get-noun-info-unknown-gender-falls-back-to-red ()
"Unrecognized gender values get the default red foreground."
(with-org-buffer "* Noun :drill:\n"
(org-set-property "NOUN" "\"thing\"")
(org-set-property "NOUN_GENDER" "\"weirdkind\"")
(org-set-property "NOUN_TRANSLATION" "\"thing\"")
(let* ((info (org-drill-get-noun-info))
(face (get-text-property 0 'face (nth 0 info))))
(should (equal "red" (plist-get face :foreground))))))
;;;; org-drill--read-property-string
(ert-deftest test-org-drill-read-property-string-strips-one-read ()
"A Lisp-readable property string is read down to its datum."
(should (equal "hablar" (org-drill--read-property-string "\"hablar\""))))
(ert-deftest test-org-drill-read-property-string-nil-is-nil ()
"A nil property (absent) returns nil rather than erroring."
(should (null (org-drill--read-property-string nil))))
;;;; org-drill--face-from-alist
(ert-deftest test-org-drill-face-from-alist-hit-returns-colour ()
"A key present in the alist returns its mapped colour."
(should (equal "tomato"
(org-drill--face-from-alist "present" org-drill-verb-tense-alist "x"))))
(ert-deftest test-org-drill-face-from-alist-is-case-insensitive ()
"Lookup ignores case, matching the assoc-string call sites."
(should (equal "tomato"
(org-drill--face-from-alist "PRESENT" org-drill-verb-tense-alist "x"))))
(ert-deftest test-org-drill-face-from-alist-miss-returns-default ()
"A key absent from the alist falls back to the supplied default."
(should (equal "fallback"
(org-drill--face-from-alist "no-such-tense"
org-drill-verb-tense-alist "fallback"))))
(provide 'test-org-drill-explain-and-language-cards)
;;; test-org-drill-explain-and-language-cards.el ends here
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