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+;;; test-transcription-paths.el --- Tests for transcription file path logic -*- lexical-binding: t; -*-
+
+;;; Commentary:
+;; Tests for cj/--transcription-output-files and cj/--transcription-script-path
+;; Categories: Normal cases, Boundary cases, Error cases
+
+;;; Code:
+
+(require 'ert)
+(require 'transcription-config)
+
+;; ----------------------------- Normal Cases ----------------------------------
+
+(ert-deftest test-cj/--transcription-output-files-simple ()
+  "Test output file paths for simple filename."
+  (let ((result (cj/--transcription-output-files "meeting.m4a")))
+    (should (string= (car result) "meeting.txt"))
+    (should (string= (cdr result) "meeting.log"))))
+
+(ert-deftest test-cj/--transcription-output-files-with-path ()
+  "Test output file paths with full path."
+  (let ((result (cj/--transcription-output-files "/home/user/audio/podcast.mp3")))
+    (should (string= (car result) "/home/user/audio/podcast.txt"))
+    (should (string= (cdr result) "/home/user/audio/podcast.log"))))
+
+(ert-deftest test-cj/--transcription-output-files-different-extensions ()
+  "Test output files for various audio extensions."
+  (dolist (ext '("m4a" "mp3" "wav" "flac" "ogg"))
+    (let* ((input (format "audio.%s" ext))
+           (result (cj/--transcription-output-files input)))
+      (should (string= (car result) "audio.txt"))
+      (should (string= (cdr result) "audio.log")))))
+
+;; ----------------------------- Boundary Cases --------------------------------
+
+(ert-deftest test-cj/--transcription-output-files-multiple-dots ()
+  "Test output files for filename with multiple dots."
+  (let ((result (cj/--transcription-output-files "meeting.2025-11-04.final.m4a")))
+    (should (string= (car result) "meeting.2025-11-04.final.txt"))
+    (should (string= (cdr result) "meeting.2025-11-04.final.log"))))
+
+(ert-deftest test-cj/--transcription-output-files-no-extension ()
+  "Test output files for filename without extension."
+  (let ((result (cj/--transcription-output-files "meeting")))
+    (should (string= (car result) "meeting.txt"))
+    (should (string= (cdr result) "meeting.log"))))
+
+(ert-deftest test-cj/--transcription-output-files-spaces-in-name ()
+  "Test output files for filename with spaces."
+  (let ((result (cj/--transcription-output-files "team meeting 2025.m4a")))
+    (should (string= (car result) "team meeting 2025.txt"))
+    (should (string= (cdr result) "team meeting 2025.log"))))
+
+(ert-deftest test-cj/--transcription-output-files-special-chars ()
+  "Test output files for filename with special characters."
+  (let ((result (cj/--transcription-output-files "meeting_(final).m4a")))
+    (should (string= (car result) "meeting_(final).txt"))
+    (should (string= (cdr result) "meeting_(final).log"))))
+
+;; ----------------------------- Script Path Tests -----------------------------
+
+(ert-deftest test-cj/--transcription-script-path-local-whisper ()
+  "Test script path for local-whisper backend."
+  (let ((cj/transcribe-backend 'local-whisper))
+    (should (string-suffix-p "scripts/local-whisper"
+                             (cj/--transcription-script-path)))))
+
+(ert-deftest test-cj/--transcription-script-path-openai-api ()
+  "Test script path for openai-api backend."
+  (let ((cj/transcribe-backend 'openai-api))
+    (should (string-suffix-p "scripts/oai-transcribe"
+                             (cj/--transcription-script-path)))))
+
+(ert-deftest test-cj/--transcription-script-path-absolute ()
+  "Test that script path is absolute."
+  (let ((path (cj/--transcription-script-path)))
+    (should (file-name-absolute-p path))))
+
+(provide 'test-transcription-paths)
+;;; test-transcription-paths.el ends here