diff --git a/tests/core/core-configuration-layer-ftest.el b/tests/core/core-configuration-layer-ftest.el
index 752a99167..be460860f 100644
--- a/tests/core/core-configuration-layer-ftest.el
+++ b/tests/core/core-configuration-layer-ftest.el
@@ -46,5 +46,48 @@
     (should (eq 'spacemacs-base (third configuration-layer--used-layers)))))
 
 ;; ---------------------------------------------------------------------------
-;; Lazy installation of layers
+;; configuration-layer//stable-elpa-verify-archive
 ;; ---------------------------------------------------------------------------
+
+(ert-deftest test-stable-elpa-verify-archive--verification-ok ()
+  (cl-letf (((symbol-function 'configuration-layer//stable-elpa-tarball-local-file)
+             (lambda ()
+               (concat spacemacs-test-directory
+                       "core/data/signed-test-stable-elpa.tar.gz")))
+            ((symbol-function 'configuration-layer//stable-elpa-tarball-local-sign-file)
+             (lambda ()
+               (concat spacemacs-test-directory
+                       "core/data/signed-test-stable-elpa.tar.gz.sig")))
+            ((symbol-function 'configuration-layer//stable-elpa-ask-to-continue)
+             (lambda (x)
+               (message "Verification Error: %s" x)
+               nil))
+            ((symbol-function 'configuration-layer//error)
+             (lambda (x)
+               (message "Fatal Error: %s" x)
+               nil))
+            ((symbol-function 'message) 'ignore))
+    (should (equal t (configuration-layer//stable-elpa-verify-archive)))))
+
+(ert-deftest test-stable-elpa-verify-archive--verification-failed ()
+  (let (verification-error)
+    (cl-letf (((symbol-function 'configuration-layer//stable-elpa-tarball-local-file)
+               (lambda ()
+                 (concat spacemacs-test-directory
+                         "core/data/test-stable-elpa.tar.gz")))
+              ((symbol-function 'configuration-layer//stable-elpa-tarball-local-sign-file)
+               (lambda ()
+                 (concat spacemacs-test-directory
+                         "core/data/signed-test-stable-elpa.tar.gz.sig")))
+              ((symbol-function 'configuration-layer//stable-elpa-ask-to-continue)
+               (lambda (x)
+                 (setq verification-error x)
+                 nil))
+              ((symbol-function 'configuration-layer//error)
+               (lambda (x)
+                 (message "Fatal Error: %s" x)
+                 nil))
+              ((symbol-function 'message) 'ignore))
+      (should (and (null (configuration-layer//stable-elpa-verify-archive))
+                   (string-match-p "^Verification failed!.*"
+                                   verification-error))))))
diff --git a/tests/core/core-configuration-layer-utest.el b/tests/core/core-configuration-layer-utest.el
index 0d300142b..df8a94fda 100644
--- a/tests/core/core-configuration-layer-utest.el
+++ b/tests/core/core-configuration-layer-utest.el
@@ -3016,3 +3016,44 @@
                                   :reqs '((foo 7)))))
     (let ((patched-pkg (configuration-layer//package-install-org 'identity pkg)))
       (should (equal pkg patched-pkg)))))
+
+;; ---------------------------------------------------------------------------
+;; configuration-layer//stable-elpa-verify-archive
+;; ---------------------------------------------------------------------------
+
+(ert-deftest test-stable-elpa-verify-archive--archive-not-found-is-fatal-error ()
+  (mocker-let
+   ((configuration-layer//stable-elpa-tarball-local-file
+     nil ((:record-cls 'mocker-stub-record
+                       :output
+                       (concat spacemacs-test-directory
+                               "core/data/not-found.tar.gz")
+                       :occur 1)))
+    (configuration-layer//stable-elpa-tarball-local-sign-file
+     nil ((:record-cls 'mocker-stub-record
+                       :output
+                       (concat spacemacs-test-directory
+                               "core/data/stable-elpa.sig")
+                       :occur 1)))
+    (configuration-layer//error
+     (msg &rest args) ((:record-cls 'mocker-stub-record :occur 1))))
+   (should (null (configuration-layer//stable-elpa-verify-archive)))))
+
+
+(ert-deftest test-stable-elpa-verify-archive--signature-not-found-is-fatal-error ()
+  (mocker-let
+   ((configuration-layer//stable-elpa-tarball-local-file
+     nil ((:record-cls 'mocker-stub-record
+                       :output
+                       (concat spacemacs-test-directory
+                               "core/data/signed-stable-elpa.tar.gz")
+                       :occur 1)))
+    (configuration-layer//stable-elpa-tarball-local-sign-file
+     nil ((:record-cls 'mocker-stub-record
+                       :output
+                       (concat spacemacs-test-directory
+                               "core/data/not-found.sig")
+                       :occur 1)))
+    (configuration-layer//error
+     (msg &rest args) ((:record-cls 'mocker-stub-record :occur 1))))
+   (should (null (configuration-layer//stable-elpa-verify-archive)))))
diff --git a/tests/core/data/signed-test-stable-elpa.tar.gz b/tests/core/data/signed-test-stable-elpa.tar.gz
new file mode 100644
index 000000000..f08c7c8e1
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diff --git a/tests/core/data/signed-test-stable-elpa.tar.gz.sig b/tests/core/data/signed-test-stable-elpa.tar.gz.sig
new file mode 100644
index 000000000..d4e507368
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diff --git a/tests/core/data/test-stable-elpa.tar.gz b/tests/core/data/test-stable-elpa.tar.gz
new file mode 100644
index 000000000..7609213fb
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