Check in tramp-tests.el, that environment variables are set correctly

* test/lisp/net/tramp-tests.el (tramp--test-check-files):
Check also, that environment variables are set correctly.

1 files changed, 28 insertions, 1 deletions

diff --git a/test/lisp/net/tramp-tests.el b/test/lisp/net/tramp-tests.el
index e80af422244..893dc543f3e 100644
--- a/test/lisp/net/tramp-tests.el
+++ b/test/lisp/net/tramp-tests.el
@@ -2283,7 +2283,34 @@ Several special characters do not work properly there."
                 (delete-file file2)
                 (should-not (file-exists-p file2))
                 (delete-directory file1)
-                (should-not (file-exists-p file1)))))
+                (should-not (file-exists-p file1))))
+
+            ;; Check, that environment variables are set correctly.
+            (when (and tramp--test-expensive-test (tramp--test-sh-p))
+              (dolist (elt files)
+                ;; Tramp does not support environment variables with
+                ;; leading or trailing spaces.  It also does not
+                ;; support the tab character.
+                (setq elt (replace-regexp-in-string "\t" " " elt)
+                      elt (replace-regexp-in-string "^\\s-+\\|\\s-+$" "" elt))
+                (let* ((default-directory tramp-test-temporary-file-directory)
+                       (shell-file-name "/bin/sh")
+                       (envvar
+                        (concat "VAR_" (upcase (md5 (current-time-string)))))
+                       (tramp-remote-process-environment
+                        (cons
+                         (format "%s=%s" envvar elt)
+                         tramp-remote-process-environment)))
+                  ;; We force a reconnect, in order to have a clean
+                  ;; environment.
+                  (tramp-cleanup-connection
+                   (tramp-dissect-file-name tramp-test-temporary-file-directory)
+                   'keep-debug 'keep-password)
+                  (should
+                   (string-equal
+                    elt
+                    (shell-command-to-string
+                     (format "echo -n $%s" envvar))))))))
 
         ;; Cleanup.
         (ignore-errors (delete-directory tmp-name1 'recursive))