feat(test): add basic magit tests

So we can be sure the status buffer opens without errors

test/magit-file-icons-tests.el

@@ -4,9 +4,28 @@
 (require 'el-patch)
 (require 'magit-file-icons)
 
-(ert-deftest magit-file-icons-should-have-no-invalid-templates ()
+(ert-deftest magit-file-icons-test-has-no-invalid-templates ()
   (el-patch-validate-all-templates))
 
+(ert-deftest magit-file-icons-test-can-open-magit-status-buffer-while-in-minor-mode ()
+  (magit-file-icons-mode +1)
+  (magit-status-setup-buffer))
+
+(ert-deftest magit-file-icons-test-can-enable-minor-mode-in-magit-status-buffer ()
+  (magit-status-setup-buffer)
+  (magit-file-icons-mode +1))
+
+(ert-deftest magit-file-icons-test-can-disable-minor-mode-in-magit-status-buffer ()
+  (magit-file-icons-mode +1)
+  (magit-status-setup-buffer)
+  (magit-file-icons-mode -1))
+
+(ert-deftest magit-file-icons-test-can-toggle-minor-mode-in-magit-status-buffer ()
+  (magit-file-icons-mode +1)
+  (magit-status-setup-buffer)
+  (magit-file-icons-mode 'toggle)
+  (magit-file-icons-mode 'toggle))
+
 ;; Local Variables:
 ;; flycheck-disabled-checkers: (emacs-lisp-checkdoc)
 ;; End: