1 files changed, 56 insertions, 0 deletions
diff --git a/test/src/eval-tests.el b/test/src/eval-tests.el
index b62178d9e8b..e4b18ec7849 100644
--- a/test/src/eval-tests.el
+++ b/test/src/eval-tests.el
@@ -247,4 +247,60 @@ expressions works for identifiers starting with period."
             (should (equal (string-trim (buffer-string))
                            expected-messages))))))))
 
+(defvar-local eval-test--local-var 'global)
+
+(ert-deftest eval-test--bug62419 ()
+  (with-temp-buffer
+    (setq eval-test--local-var 'first-local)
+    (let ((eval-test--local-var t))
+      (kill-local-variable 'eval-test--local-var)
+      (setq eval-test--local-var 'second-local)
+      (should (eq eval-test--local-var 'second-local)))
+    ;; FIXME: It's not completely clear if exiting the above `let'
+    ;; should restore the buffer-local binding to `first-local'
+    ;; (i.e. reset the value of the second buffer-local binding to the
+    ;; first's initial value) or should do nothing (on the principle that
+    ;; the first buffer-local binding doesn't exists any more so there's
+    ;; nothing to restore).  I think both semantics make sense.
+    ;;(should (eq eval-test--local-var 'first-local))
+    )
+  (should (eq eval-test--local-var 'global)))
+
+(ert-deftest eval-tests-defvaralias ()
+  (defvar eval-tests--my-var 'coo)
+  (defvaralias 'eval-tests--my-var1 'eval-tests--my-var)
+  (defvar eval-tests--my-var1)
+  (should (equal eval-tests--my-var 'coo))
+  (should (equal eval-tests--my-var1 'coo))
+
+  (defvaralias 'eval-tests--my-a 'eval-tests--my-b)
+  (defvaralias 'eval-tests--my-b 'eval-tests--my-c)
+
+  (should-error (defvaralias 'eval-tests--my-c 'eval-tests--my-c)
+                :type 'cyclic-variable-indirection)
+  (defvaralias 'eval-tests--my-d 'eval-tests--my-a)
+  (should-error (defvaralias 'eval-tests--my-c 'eval-tests--my-d)
+                :type 'cyclic-variable-indirection))
+
+(defvar eval-tests/global-var 'value)
+(defvar-local eval-tests/buffer-local-var 'value)
+(ert-deftest eval-tests/default-value ()
+  ;; `let' overrides the default value for global variables.
+  (should (default-boundp 'eval-tests/global-var))
+  (should (eq 'value (default-value 'eval-tests/global-var)))
+  (should (eq 'value eval-tests/global-var))
+  (let ((eval-tests/global-var 'bar))
+    (should (eq 'bar (default-value 'eval-tests/global-var)))
+    (should (eq 'bar eval-tests/global-var)))
+  ;; `let' overrides the default value everywhere, but leaves
+  ;; buffer-local values unchanged in current buffer and in the
+  ;; buffers where there is no explicitly set buffer-local value.
+  (should (default-boundp 'eval-tests/buffer-local-var))
+  (should (eq 'value (default-value 'eval-tests/buffer-local-var)))
+  (should (eq 'value eval-tests/buffer-local-var))
+  (with-temp-buffer
+    (let ((eval-tests/buffer-local-var 'bar))
+      (should (eq 'bar (default-value 'eval-tests/buffer-local-var)))
+      (should (eq 'bar eval-tests/buffer-local-var)))))
+
 ;;; eval-tests.el ends here