* test/lisp/bookmark-tests.el (bookmark-tests-data-dir):
* test/lisp/calendar/todo-mode-tests.el (todo-test-data-dir):
* test/lisp/net/dbus-tests.el (dbus--tests-dir):
* test/lisp/emacs-lisp/edebug-tests.el
(edebug-tests-sample-code-file):
* test/lisp/emacs-lisp/package-tests.el
(package-test-fake-contents-file):
* test/lisp/emacs-lisp/shadow-tests.el (shadow-tests-data-directory):
* test/lisp/emacs-lisp/testcover-tests.el
(testcover-tests-file-dir, testcover-tests-test-cases):
* test/lisp/mail/uudecode-tests.el (uudecode-tests-data-dir):
* test/lisp/net/tramp-archive-tests.el
(tramp-archive-test-resource-directory):
* test/lisp/pcmpl-linux-tests.el (pcmpl-linux-tests-data-dir):
* test/lisp/progmodes/cperl-mode-tests.el
(cperl-mode-tests-data-directory):
* test/lisp/progmodes/flymake-tests.el
(flymake-tests-data-directory):
* test/lisp/progmodes/ruby-mode-tests.el (ruby-mode-tests-data-dir):
* test/lisp/saveplace-tests.el (saveplace-tests-dir):
* test/lisp/textmodes/css-mode-tests.el (css-mode-tests-data-dir):
Remove.

* test/lisp/bookmark-tests.el (bookmark-tests-bookmark-file)
(bookmark-tests-example-file, bookmark-tests-bookmark-file-list):
* test/lisp/calendar/todo-mode-tests.el (todo-test-file-1)
(todo-test-archive-1, with-todo-test, todo-test--add-file):
* test/lisp/custom-tests.el (custom--test-theme-variables):
* test/lisp/net/dbus-tests.el (dbus--test-introspect):
* test/lisp/emacs-lisp/edebug-tests.el (edebug-tests-setup-code-file):
* test/lisp/emacs-lisp/package-tests.el (package-test-data-dir)
(package-test-desc-from-buffer, package-test-install-single)
(package-test-macro-compilation)
(package-test-install-prioritized)
(package-test-install-multifile, package-test-update-archives)
(package-test-update-archives-async)
(package-test-update-archives/ignore-nil-entry)
(package-test-signed, package-x-test-upload-buffer)
(package-x-test-upload-new-version):
* test/lisp/emacs-lisp/shadow-tests.el (shadow-case-insensitive):
* test/lisp/emacs-lisp/testcover-tests.el
(testcover-tests-build-test-cases):
* test/lisp/mail/uudecode-tests.el (uudecode-tests-encoded-str)
(uudecode-tests-decoded-str):
* test/lisp/net/tramp-archive-tests.el
(tramp-archive-test-file-archive)
(tramp-archive-test-directory):
* test/lisp/pcmpl-linux-tests.el (pcmpl-linux-test-fs-types)
(pcmpl-linux-test-mounted-directories):
* test/lisp/progmodes/cperl-mode-tests.el (cperl-mode-test-bug-10483)
(cperl-mode-test-indent-styles):
* test/lisp/progmodes/flymake-tests.el
(flymake-tests--call-with-fixture):
* test/lisp/progmodes/ruby-mode-tests.el
(ruby--indent/converted-from-manual-test):
* test/lisp/saveplace-tests.el
(saveplace-test-save-place-to-alist/dir)
(saveplace-test-load-alist-from-file):
* test/lisp/textmodes/css-mode-tests.el (css-mode-test-indent): Adjust
to use new resource directory macros.

* test/lisp/textmodes/css-mode-tests.el:
* test/lisp/progmodes/ruby-mode-tests.el: Remove TODO to convert test
files into unit tests.  The files are still useful for debugging.
Ref: https://lists.gnu.org/r/emacs-devel/2020-09/msg01906.html

* test/lisp/textmodes/css-mode-tests.el (css-mode-test-indent): New
test.
(css-mode-tests-data-dir): New variable.
* test/manual/indent/css-mode.css: Move from here...
* test/lisp/textmodes/css-mode-resources/test-indent.css: ...to here.

* test/lib-src/emacsclient-tests.el:
* test/lisp/emacs-lisp/hierarchy-tests.el:
* test/lisp/eshell/eshell-tests.el:
* test/lisp/gnus/gnus-util-tests.el:
* test/lisp/progmodes/js-tests.el:
* test/lisp/textmodes/bibtex-tests.el:
* test/src/editfns-tests.el:
* test/src/fns-tests.el: Use lexical-binding.

* test/lisp/emacs-lisp/hierarchy-tests.el
(hierarchy-leafs-includes-lonely-roots):
* test/src/editfns-tests.el (transpose-test-get-byte-positions):
* test/src/fns-tests.el (fns-tests-func-arity):
Adjust for lexical-binding.

* lisp/textmodes/bibtex.el (bibtex-mode): Call `bibtex-set-dialect'.
* test/automated/bibtex-tests.el: Add regression tests (bug#21764).

* test/lisp/textmodes/paragraphs-tests.el
(paragraphs-tests-mark-paragraph): Update for recent change.

* lisp/textmodes/po.el: Use lexical-binding.

* test/lisp/textmodes/po-tests.el: New file with tests for po.el.

* test/lisp/textmodes/mhtml-mode-tests.el:
* test/lisp/textmodes/sgml-mode-tests.el: Use lexical-binding.