Test that `notmuch-hello-refresh-hook' is called once when
`notmuch-hello' is called and twice when calling
`notmuch-hello-update' after that.

The tests are very similar to tests for `notmuch-hello-mode-hook'.
---
 test/emacs       |   19 +++++++++++++++++++
 test/test-lib.el |    1 +
 2 files changed, 20 insertions(+), 0 deletions(-)

diff --git a/test/emacs b/test/emacs
index dffad0f..ca82445 100755
--- a/test/emacs
+++ b/test/emacs
@@ -495,4 +495,23 @@ counter=$(test_emacs \
 )
 test_expect_equal "$counter" 1
 
+test_begin_subtest "notmuch-hello-refresh hook is called"
+counter=$(test_emacs \
+    '(let ((notmuch-hello-refresh-hook-counter 0))
+       (kill-buffer "*notmuch-hello*")
+       (notmuch-hello)
+       notmuch-hello-refresh-hook-counter)'
+)
+test_expect_equal "$counter" 1
+
+test_begin_subtest "notmuch-hello-refresh hook is called on updates"
+counter=$(test_emacs \
+    '(let ((notmuch-hello-refresh-hook-counter 0))
+       (kill-buffer "*notmuch-hello*")
+       (notmuch-hello)
+       (notmuch-hello-update)
+       notmuch-hello-refresh-hook-counter)'
+)
+test_expect_equal "$counter" 2
+
 test_done
diff --git a/test/test-lib.el b/test/test-lib.el
index 83b8a65..3b817c3 100644
--- a/test/test-lib.el
+++ b/test/test-lib.el
@@ -75,3 +75,4 @@ nothing."
   (add-hook hook (apply-partially 'hook-counter hook)))
 
 (add-hook-counter 'notmuch-hello-mode-hook)
+(add-hook-counter 'notmuch-hello-refresh-hook)
-- 
1.7.7.3