15 files changed, 362 insertions, 42 deletions

diff --git a/test/lisp/cedet/srecode-utest-template.el b/test/lisp/cedet/srecode-utest-template.el
index 63c33a3c440..7c5bbc599a3 100644
--- a/test/lisp/cedet/srecode-utest-template.el
+++ b/test/lisp/cedet/srecode-utest-template.el
@@ -323,7 +323,6 @@ INSIDE SECTION: ARG HANDLER ONE")
 
 (ert-deftest srecode-utest-project ()
   "Test that project filtering works."
-  :expected-result (if (getenv "EMACS_HYDRA_CI") :failed :passed) ; fixme
   (save-excursion
     (let ((testbuff (find-file-noselect srecode-utest-testfile))
           (temp nil))
@@ -347,6 +346,10 @@ INSIDE SECTION: ARG HANDLER ONE")
       ;; Load the application templates, and make sure we can find them.
       (srecode-load-tables-for-mode major-mode 'tests)
 
+      (dolist (table (oref (srecode-table) tables))
+        (when (gethash "test" (oref table contexthash))
+          (oset table project default-directory)))
+
       (setq temp (srecode-template-get-table (srecode-table)
                                              "test-project"
                                              "test"
diff --git a/test/lisp/emacs-lisp/bytecomp-tests.el b/test/lisp/emacs-lisp/bytecomp-tests.el
index 894914300ae..834e3b6d914 100644
--- a/test/lisp/emacs-lisp/bytecomp-tests.el
+++ b/test/lisp/emacs-lisp/bytecomp-tests.el
@@ -365,24 +365,24 @@ bytecompiled code, and their results compared.")
 (defun bytecomp-check-1 (pat)
   "Return non-nil if PAT is the same whether directly evalled or compiled."
   (let ((warning-minimum-log-level :emergency)
-        (byte-compile-warnings nil)
-        (v0 (condition-case nil
+        (byte-compile-warnings nil)
+        (v0 (condition-case err
                 (eval pat)
-              (error 'bytecomp-check-error)))
-        (v1 (condition-case nil
+              (error (list 'bytecomp-check-error (car err)))))
+        (v1 (condition-case err
                 (funcall (byte-compile (list 'lambda nil pat)))
-              (error 'bytecomp-check-error))))
+              (error (list 'bytecomp-check-error (car err))))))
     (equal v0 v1)))
 
 (put 'bytecomp-check-1 'ert-explainer 'bytecomp-explain-1)
 
 (defun bytecomp-explain-1 (pat)
-  (let ((v0 (condition-case nil
+  (let ((v0 (condition-case err
                 (eval pat)
-              (error 'bytecomp-check-error)))
-        (v1 (condition-case nil
+              (error (list 'bytecomp-check-error (car err)))))
+        (v1 (condition-case err
                 (funcall (byte-compile (list 'lambda nil pat)))
-              (error 'bytecomp-check-error))))
+              (error (list 'bytecomp-check-error (car err))))))
     (format "Expression `%s' gives `%s' if directly evalled, `%s' if compiled."
             pat v0 v1)))
 
@@ -405,12 +405,12 @@ Subtests signal errors if something goes wrong."
         (print-quoted t)
         v0 v1)
     (dolist (pat byte-opt-testsuite-arith-data)
-      (condition-case nil
+      (condition-case err
           (setq v0 (eval pat))
-        (error (setq v0 'bytecomp-check-error)))
-      (condition-case nil
+        (error (setq v0 (list 'bytecomp-check-error (car err)))))
+      (condition-case err
           (setq v1 (funcall (byte-compile (list 'lambda nil pat))))
-        (error (setq v1 'bytecomp-check-error)))
+        (error (setq v1 (list 'bytecomp-check-error (car err)))))
       (insert (format "%s" pat))
       (indent-to-column 65)
       (if (equal v0 v1)
@@ -479,6 +479,7 @@ Subtests signal errors if something goes wrong."
 (ert-deftest bytecomp-tests--warnings ()
   (with-current-buffer (get-buffer-create "*Compile-Log*")
     (let ((inhibit-read-only t)) (erase-buffer)))
+  (mapc #'fmakunbound '(my-test0 my--test11 my--test12 my--test2))
   (test-byte-comp-compile-and-load t
     '(progn
        (defun my-test0 ()
@@ -564,25 +565,25 @@ bytecompiled code, and their results compared.")
   "Return non-nil if PAT is the same whether directly evalled or compiled."
   (let ((warning-minimum-log-level :emergency)
         (byte-compile-warnings nil)
-        (v0 (condition-case nil
+        (v0 (condition-case err
                 (eval pat t)
-              (error 'bytecomp-check-error)))
-        (v1 (condition-case nil
+              (error (list 'bytecomp-check-error (car err)))))
+        (v1 (condition-case err
                 (funcall (let ((lexical-binding t))
                            (byte-compile `(lambda nil ,pat))))
-              (error 'bytecomp-check-error))))
+              (error (list 'bytecomp-check-error (car err))))))
     (equal v0 v1)))
 
 (put 'bytecomp-lexbind-check-1 'ert-explainer 'bytecomp-lexbind-explain-1)
 
 (defun bytecomp-lexbind-explain-1 (pat)
-  (let ((v0 (condition-case nil
+  (let ((v0 (condition-case err
                 (eval pat t)
-              (error 'bytecomp-check-error)))
-        (v1 (condition-case nil
+              (error (list 'bytecomp-check-error (car err)))))
+        (v1 (condition-case err
                 (funcall (let ((lexical-binding t))
                            (byte-compile (list 'lambda nil pat))))
-              (error 'bytecomp-check-error))))
+              (error (list 'bytecomp-check-error (car err))))))
     (format "Expression `%s' gives `%s' if directly evalled, `%s' if compiled."
             pat v0 v1)))
 
diff --git a/test/lisp/emacs-lisp/cl-lib-tests.el b/test/lisp/emacs-lisp/cl-lib-tests.el
index 57b9d23efb0..40dd7e4eeb0 100644
--- a/test/lisp/emacs-lisp/cl-lib-tests.el
+++ b/test/lisp/emacs-lisp/cl-lib-tests.el
@@ -242,6 +242,22 @@
     (should (= (cl-the integer (cl-incf side-effect)) 1))
     (should (= side-effect 1))))
 
+(ert-deftest cl-lib-test-incf ()
+  (let ((var 0))
+    (should (= (cl-incf var) 1))
+    (should (= var 1)))
+  (let ((alist))
+    (should (= (cl-incf (alist-get 'a alist 0)) 1))
+    (should (= (alist-get 'a alist 0) 1))))
+
+(ert-deftest cl-lib-test-decf ()
+  (let ((var 1))
+    (should (= (cl-decf var) 0))
+    (should (= var 0)))
+  (let ((alist))
+    (should (= (cl-decf (alist-get 'a alist 0)) -1))
+    (should (= (alist-get 'a alist 0) -1))))
+
 (ert-deftest cl-lib-test-plusp ()
   (should-not (cl-plusp -1.0e+INF))
   (should-not (cl-plusp -1.5e2))
diff --git a/test/lisp/ffap-tests.el b/test/lisp/ffap-tests.el
index 30c8f794577..e8c12669c1a 100644
--- a/test/lisp/ffap-tests.el
+++ b/test/lisp/ffap-tests.el
@@ -77,6 +77,46 @@ left alone when opening a URL in an external browser."
     (should (compare-window-configurations (current-window-configuration) old))
     (should (equal urls '("https://www.gnu.org")))))
 
+(defun ffap-test-string (space string)
+  (let ((ffap-file-name-with-spaces space))
+    (with-temp-buffer
+      (insert string)
+      (goto-char (point-min))
+      (forward-char 10)
+      (ffap-string-at-point))))
+
+(ert-deftest ffap-test-with-spaces ()
+  (should
+   (equal
+    (ffap-test-string
+     t "c:/Program Files/Open Text Evaluation Media/Open Text Exceed 14 x86/Program here.txt")
+    "/Program Files/Open Text Evaluation Media/Open Text Exceed 14 x86/Program here.txt"))
+  (should
+   (equal
+    (ffap-test-string
+     nil "c:/Program Files/Open Text Evaluation Media/Open Text Exceed 14 x86/Program here.txt")
+    "c:/Program"))
+  (should
+   (equal
+    (ffap-test-string
+     t "c:/Program Files/Open Text Evaluation Media/Open Text Exceed 14 x86/Program Files/Hummingbird/")
+    "/Program Files/Open Text Evaluation Media/Open Text Exceed 14 x86/Program Files/Hummingbird/"))
+  (should
+   (equal
+    (ffap-test-string
+     t "c:\\Program Files\\Open Text Evaluation Media\\Open Text Exceed 14 x86\\Program Files\\Hummingbird\\")
+    "\\Program Files\\Open Text Evaluation Media\\Open Text Exceed 14 x86\\Program Files\\Hummingbird\\"))
+  (should
+   (equal
+    (ffap-test-string
+     t "c:\\Program Files\\Freescale\\CW for MPC55xx and MPC56xx 2.10\\PowerPC_EABI_Tools\\Command_Line_Tools\\CLT_Usage_Notes.txt")
+    "\\Program Files\\Freescale\\CW for MPC55xx and MPC56xx 2.10\\PowerPC_EABI_Tools\\Command_Line_Tools\\CLT_Usage_Notes.txt"))
+  (should
+   (equal
+    (ffap-test-string
+     t "C:\\temp\\program.log on Windows or /var/log/program.log on Unix.")
+    "\\temp\\program.log")))
+
 (provide 'ffap-tests)
 
 ;;; ffap-tests.el ends here
diff --git a/test/lisp/mail/flow-fill-tests.el b/test/lisp/mail/flow-fill-tests.el
index 4d435aeda71..c2e4178b7d4 100644
--- a/test/lisp/mail/flow-fill-tests.el
+++ b/test/lisp/mail/flow-fill-tests.el
@@ -35,7 +35,8 @@
           ">>> unmuzzled ratsbane!\n"
           ">>>> Henceforth, the coding style is to be strictly \n"
           ">>>> enforced, including the use of only upper case.\n"
-          ">>>>> I've noticed a lack of adherence to the coding \n"
+          ">>>>> I've noticed a lack of adherence to \n"
+          ">>>>> the coding \n"
           ">>>>> styles, of late.\n"
           ">>>>>> Any complaints?\n"))
         (output
diff --git a/test/lisp/progmodes/compile-tests.el b/test/lisp/progmodes/compile-tests.el
index cd736497e66..d566e7dd862 100644
--- a/test/lisp/progmodes/compile-tests.el
+++ b/test/lisp/progmodes/compile-tests.el
@@ -435,8 +435,8 @@ The test data is in `compile-tests--test-regexps-data'."
           (compilation-num-infos-found 0))
       (mapc #'compile--test-error-line compile-tests--test-regexps-data)
       (should (eq compilation-num-errors-found 94))
-      (should (eq compilation-num-warnings-found 37))
-      (should (eq compilation-num-infos-found 26)))))
+      (should (eq compilation-num-warnings-found 35))
+      (should (eq compilation-num-infos-found 28)))))
 
 (ert-deftest compile-test-grep-regexps ()
   "Test the `grep-regexp-alist' regexps.
diff --git a/test/lisp/progmodes/cperl-mode-tests.el b/test/lisp/progmodes/cperl-mode-tests.el
new file mode 100644
index 00000000000..be8b42d99a8
--- /dev/null
+++ b/test/lisp/progmodes/cperl-mode-tests.el
@@ -0,0 +1,51 @@
+;;; cperl-mode-tests --- Test for cperl-mode  -*- lexical-binding: t -*-
+
+;; Copyright (C) 2020 Free Software Foundation, Inc.
+
+;; Author: Harald Jörg <haj@posteo.de>
+;; Maintainer: Harald Jörg
+;; Keywords: internal
+;; Homepage: https://github.com/HaraldJoerg/cperl-mode
+
+;;; Commentary:
+
+;; This is a collection of tests for the fontification of CPerl-mode.
+
+;; Run these tests interactively:
+;; (ert-run-tests-interactively '(tag :fontification))
+
+;;; Code:
+
+(defvar cperl-test-mode #'cperl-mode)
+
+(defun cperl-test-ppss (text regexp)
+  "Return the `syntax-ppss' of the first character matched by REGEXP in TEXT."
+  (interactive)
+  (with-temp-buffer
+    (insert text)
+    (funcall cperl-test-mode)
+    (goto-char (point-min))
+    (re-search-forward regexp)
+    (syntax-ppss)))
+
+(ert-deftest cperl-mode-test-bug-42168 ()
+  "Verify that '/' is a division after ++ or --, not a regexp.
+Reported in https://github.com/jrockway/cperl-mode/issues/45.
+If seen as regular expression, then the slash is displayed using
+font-lock-constant-face.  If seen as a division, then it doesn't
+have a face property."
+  :tags '(:fontification)
+  ;; The next two Perl expressions have divisions.  Perl "punctuation"
+  ;; operators don't get a face.
+  (let ((code "{ $a++ / $b }"))
+    (should (equal (nth 8 (cperl-test-ppss code "/")) nil)))
+  (let ((code "{ $a-- / $b }"))
+    (should (equal (nth 8 (cperl-test-ppss code "/")) nil)))
+  ;; The next two Perl expressions have regular expressions.  The
+  ;; delimiter of a RE is fontified with font-lock-constant-face.
+  (let ((code "{ $a+ / $b } # /"))
+    (should (equal (nth 8 (cperl-test-ppss code "/")) 7)))
+  (let ((code "{ $a- / $b } # /"))
+    (should (equal (nth 8 (cperl-test-ppss code "/")) 7))))
+
+;;; cperl-mode-tests.el ends here
diff --git a/test/lisp/simple-tests.el b/test/lisp/simple-tests.el
index 4adcacb279b..63e504bbe17 100644
--- a/test/lisp/simple-tests.el
+++ b/test/lisp/simple-tests.el
@@ -39,6 +39,13 @@
      (with-no-warnings (simple-test--buffer-substrings))))
 
 
+;;; `count-words'
+(ert-deftest simple-test-count-words-bug-41761 ()
+  (with-temp-buffer
+    (dotimes (i 10) (insert (propertize "test " 'field (cons nil nil))))
+    (should (= (count-words (point-min) (point-max)) 10))))
+
+
 ;;; `transpose-sexps'
 (defmacro simple-test--transpositions (&rest body)
   (declare (indent 0)
diff --git a/test/lisp/textmodes/bibtex-tests.el b/test/lisp/textmodes/bibtex-tests.el
new file mode 100644
index 00000000000..b3858de9e61
--- /dev/null
+++ b/test/lisp/textmodes/bibtex-tests.el
@@ -0,0 +1,57 @@
+;;; bibtex-tests.el --- Test suite for bibtex.
+
+;; Copyright (C) 2013-2020 Free Software Foundation, Inc.
+
+;; Keywords: bibtex
+
+;; This file is part of GNU Emacs.
+
+;; GNU Emacs 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 3 of the License, or
+;; (at your option) any later version.
+
+;; GNU Emacs 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.  If not, see <http://www.gnu.org/licenses/>.
+
+;;; Commentary:
+
+;;; Code:
+
+(require 'ert)
+(require 'bibtex)
+
+(ert-deftest bibtex-test-set-dialect ()
+  "Tests if `bibtex-set-dialect' is executed."
+  (with-temp-buffer
+    (insert "@article{someID,
+  author = {some author},
+  title = {some title},
+}")
+    (bibtex-mode)
+    (should-not (null bibtex-dialect))
+    (should-not (null bibtex-entry-type))
+    (should-not (null bibtex-entry-head))
+    (should-not (null bibtex-reference-key))
+    (should-not (null bibtex-entry-head))
+    (should-not (null bibtex-entry-maybe-empty-head))
+    (should-not (null bibtex-any-valid-entry-type))))
+
+(ert-deftest bibtex-test-parse-buffers-stealthily ()
+  "Tests if `bibtex-parse-buffers-stealthily' can be executed."
+  (with-temp-buffer
+    (insert "@article{someID,
+  author = {some author},
+  title = {some title},
+}")
+    (bibtex-mode)
+    (should (progn (bibtex-parse-buffers-stealthily) t))))
+
+(provide 'bibtex-tests)
+
+;;; bibtex-tests.el ends here
diff --git a/test/lisp/textmodes/paragraphs-tests.el b/test/lisp/textmodes/paragraphs-tests.el
index fc839fe7d95..0b264e7e184 100644
--- a/test/lisp/textmodes/paragraphs-tests.el
+++ b/test/lisp/textmodes/paragraphs-tests.el
@@ -50,8 +50,8 @@
     (goto-char (point-min))
     (mark-paragraph)
     (should mark-active)
-    (should (equal (mark) 7)))
-  (should-error (mark-paragraph 0)))
+    (should (equal (mark) 7))))
+;;;  (should-error (mark-paragraph 0)))
 
 (ert-deftest paragraphs-tests-kill-paragraph ()
   (with-temp-buffer
diff --git a/test/lisp/url/url-expand-tests.el b/test/lisp/url/url-expand-tests.el
index 6e0ce869502..3b0b6fbd41a 100644
--- a/test/lisp/url/url-expand-tests.el
+++ b/test/lisp/url/url-expand-tests.el
@@ -100,6 +100,13 @@
   (should (equal (url-expand-file-name "foo#bar" "http://host/foobar") "http://host/foo#bar"))
   (should (equal (url-expand-file-name "foo#bar" "http://host/foobar/") "http://host/foobar/foo#bar")))
 
+(ert-deftest url-expand-file-name/relative-resolution-file-url ()
+  "RFC 3986, Section 5.4 Reference Resolution Examples / Section 5.4.1. Normal Examples"
+  (should (equal (url-expand-file-name "bar.html"          "file:///a/b/c/foo.html") "file:///a/b/c/bar.html"))
+  (should (equal (url-expand-file-name "bar.html"          "file:///a/b/c/")         "file:///a/b/c/bar.html"))
+  (should (equal (url-expand-file-name "../d/bar.html"     "file:///a/b/c/")         "file:///a/b/d/bar.html"))
+  (should (equal (url-expand-file-name "../d/bar.html"     "file:///a/b/c/foo.html") "file:///a/b/d/bar.html")))
+
 (provide 'url-expand-tests)
 
 ;;; url-expand-tests.el ends here
diff --git a/test/manual/etags/c-src/abbrev.c b/test/manual/etags/c-src/abbrev.c
index 03b9f0e65b8..44563d6046a 100644
--- a/test/manual/etags/c-src/abbrev.c
+++ b/test/manual/etags/c-src/abbrev.c
@@ -78,9 +78,6 @@ Lisp_Object Vlast_abbrev_text;
 
 int last_abbrev_point;
 
-/* Hook to run before expanding any abbrev.  */
-
-Lisp_Object Vpre_abbrev_expand_hook, Qpre_abbrev_expand_hook;
 
 DEFUN ("make-abbrev-table", Fmake_abbrev_table, Smake_abbrev_table, 0, 0, 0,
   "Create a new, empty abbrev table object.")
@@ -232,9 +229,6 @@ Returns the abbrev symbol, if expansion took place.")
 
   value = Qnil;
 
-  if (!NILP (Vrun_hooks))
-    call1 (Vrun_hooks, Qpre_abbrev_expand_hook);
-
   wordstart = 0;
   if (!(BUFFERP (Vabbrev_start_location_buffer)
         && XBUFFER (Vabbrev_start_location_buffer) == current_buffer))
@@ -595,14 +589,6 @@ This causes `save-some-buffers' to offer to save the abbrevs.");
     "*Set non-nil means expand multi-word abbrevs all caps if abbrev was so.");
   abbrev_all_caps = 0;
 
-  DEFVAR_LISP ("pre-abbrev-expand-hook", &Vpre_abbrev_expand_hook,
-    "Function or functions to be called before abbrev expansion is done.\n\
-This is the first thing that `expand-abbrev' does, and so this may change\n\
-the current abbrev table before abbrev lookup happens.");
-  Vpre_abbrev_expand_hook = Qnil;
-  Qpre_abbrev_expand_hook = intern ("pre-abbrev-expand-hook");
-  staticpro (&Qpre_abbrev_expand_hook);
-
   defsubr (&Smake_abbrev_table);
   defsubr (&Sclear_abbrev_table);
   defsubr (&Sdefine_abbrev);
diff --git a/test/manual/image-circular-tests.el b/test/manual/image-circular-tests.el
new file mode 100644
index 00000000000..33ea3ea9547
--- /dev/null
+++ b/test/manual/image-circular-tests.el
@@ -0,0 +1,144 @@
+;;; image-tests.el --- Test suite for image-related functions.
+
+;; Copyright (C) 2019 Free Software Foundation, Inc.
+
+;; Author: Pip Cet <pipcet@gmail.com>
+;; Keywords:       internal
+;; Human-Keywords: internal
+
+;; This file is part of GNU Emacs.
+
+;; GNU Emacs 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 3 of the License, or
+;; (at your option) any later version.
+
+;; GNU Emacs 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.  If not, see <https://www.gnu.org/licenses/>.
+
+;;; Commentary:
+
+;;; Code:
+
+(require 'ert)
+
+(ert-deftest image-test-duplicate-keywords ()
+  "Test that duplicate keywords in an image spec lead to rejection."
+  (should-error (image-size `(image :type xbm :type xbm :width 1 :height 1
+                                    :data ,(bool-vector t))
+                            t)))
+
+(ert-deftest image-test-circular-plist ()
+  "Test that a circular image spec is rejected."
+  (should-error
+   (let ((l `(image :type xbm :width 1 :height 1 :data ,(bool-vector t))))
+     (setcdr (last l) '#1=(:invalid . #1#))
+     (image-size l t))))
+
+(ert-deftest image-test-:type-property-value ()
+  "Test that :type is allowed as a property value in an image spec."
+  (should (equal (image-size `(image :dummy :type :type xbm :width 1 :height 1
+                                        :data ,(bool-vector t))
+                                t)
+                 (cons 1 1))))
+
+(ert-deftest image-test-circular-specs ()
+  "Test that circular image spec property values do not cause infinite recursion."
+  (should
+   (let* ((circ1 (cons :dummy nil))
+          (circ2 (cons :dummy nil))
+          (spec1 `(image :type xbm :width 1 :height 1
+                         :data ,(bool-vector 1) :ignored ,circ1))
+          (spec2 `(image :type xbm :width 1 :height 1
+                        :data ,(bool-vector 1) :ignored ,circ2)))
+     (setcdr circ1 circ1)
+     (setcdr circ2 circ2)
+     (and (equal (image-size spec1 t) (cons 1 1))
+          (equal (image-size spec2 t) (cons 1 1))))))
+
+(provide 'image-tests)
+;;; image-tests.el ends here.
+;;; image-tests.el --- tests for image.el -*- lexical-binding: t -*-
+
+;; Copyright (C) 2019-2020 Free Software Foundation, Inc.
+
+;; This file is part of GNU Emacs.
+
+;; GNU Emacs 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 3 of the License, or
+;; (at your option) any later version.
+
+;; GNU Emacs 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.  If not, see <https://www.gnu.org/licenses/>.
+
+;;; Code:
+
+(require 'ert)
+(require 'image)
+(eval-when-compile
+  (require 'cl-lib))
+
+(defconst image-tests--emacs-images-directory
+  (expand-file-name "../etc/images" (getenv "EMACS_TEST_DIRECTORY"))
+  "Directory containing Emacs images.")
+
+(ert-deftest image--set-property ()
+  "Test `image--set-property' behavior."
+  (let ((image (list 'image)))
+    ;; Add properties.
+    (setf (image-property image :scale) 1)
+    (should (equal image '(image :scale 1)))
+    (setf (image-property image :width) 8)
+    (should (equal image '(image :scale 1 :width 8)))
+    (setf (image-property image :height) 16)
+    (should (equal image '(image :scale 1 :width 8 :height 16)))
+    ;; Delete properties.
+    (setf (image-property image :type) nil)
+    (should (equal image '(image :scale 1 :width 8 :height 16)))
+    (setf (image-property image :scale) nil)
+    (should (equal image '(image :width 8 :height 16)))
+    (setf (image-property image :height) nil)
+    (should (equal image '(image :width 8)))
+    (setf (image-property image :width) nil)
+    (should (equal image '(image)))))
+
+(ert-deftest image-type-from-file-header-test ()
+  "Test image-type-from-file-header."
+  (should (eq (if (image-type-available-p 'svg) 'svg)
+              (image-type-from-file-header
+               (expand-file-name "splash.svg"
+                                 image-tests--emacs-images-directory)))))
+
+(ert-deftest image-rotate ()
+  "Test `image-rotate'."
+  (cl-letf* ((image (list 'image))
+             ((symbol-function 'image--get-imagemagick-and-warn)
+              (lambda () image)))
+    (let ((current-prefix-arg '(4)))
+      (call-interactively #'image-rotate))
+    (should (equal image '(image :rotation 270.0)))
+    (call-interactively #'image-rotate)
+    (should (equal image '(image :rotation 0.0)))
+    (image-rotate)
+    (should (equal image '(image :rotation 90.0)))
+    (image-rotate 0)
+    (should (equal image '(image :rotation 90.0)))
+    (image-rotate 1)
+    (should (equal image '(image :rotation 91.0)))
+    (image-rotate 1234.5)
+    (should (equal image '(image :rotation 245.5)))
+    (image-rotate -154.5)
+    (should (equal image '(image :rotation 91.0)))))
+
+;;; image-tests.el ends here
diff --git a/test/src/comp-tests.el b/test/src/comp-tests.el
index 092504565a6..33b307b1c6e 100644
--- a/test/src/comp-tests.el
+++ b/test/src/comp-tests.el
@@ -54,7 +54,8 @@ Check that the resulting binaries do not differ."
          (comp-debug 0))
     (copy-file comp-src comp1-src t)
     (copy-file comp-src comp2-src t)
-    (load (concat comp-src "c") nil nil t t)
+    (let ((load-no-native t))
+      (load (concat comp-src "c") nil nil t t))
     (should-not (subr-native-elisp-p (symbol-function #'native-compile)))
     (message "Compiling stage1...")
     (let ((comp1-eln (native-compile comp1-src)))
diff --git a/test/src/fns-tests.el b/test/src/fns-tests.el
index f1faf58659a..400e9126486 100644
--- a/test/src/fns-tests.el
+++ b/test/src/fns-tests.el
@@ -895,3 +895,9 @@
   ;; This does not test randomness; it's merely a format check.
   (should (string-match "\\`[0-9a-f]\\{128\\}\\'"
                         (secure-hash 'sha512 'iv-auto 100))))
+
+(ert-deftest test-vector-delete ()
+  (let ((v1 (make-vector 1000 1)))
+    (should (equal (delete t [nil t]) [nil]))
+    (should (equal (delete 1 v1) (vector)))
+    (should (equal (delete 2 v1) v1))))