[PATCH] test: use `princ' instead of `message' calls in emacs tests

[Dmitry Kurochkin <dmitry.kurochkin@gmail.com>]

The patch replaces all (message (buffer-string)) calls in emacs
tests with (princ (buffer-string)).  This avoids accidentally
interpreting '%' as format specifiers and makes code simpler
because we do not need to capture stderr.

Also, the patch works around an Emacs (23.3+1-1 on current Debian
Unstable) segfault in "Ensure that emacs doesn't drop results"
test.  Note: the segfault does not happen on every test run.
Though, it seems to be consistently reproducible if the test uses
300 messages instead of 30.  Hopefully, it is the crash described
in Emacs bug #8545 [1] which is already fixed.

[1] http://debbugs.gnu.org/cgi/bugreport.cgi?bug=8545
---

The patch applies to the release-candidate/0.6 branch.  This is a
rewrite of
id:"1305006007-26445-1-git-send-email-dmitry.kurochkin@gmail.com"
following Austin's suggestion.

Regards,
  Dmitry


 test/emacs                     |   18 +++++++++---------
 test/emacs-large-search-buffer |    5 +++--
 2 files changed, 12 insertions(+), 11 deletions(-)

diff --git a/test/emacs b/test/emacs
index b376033..2e85b0c 100755
--- a/test/emacs
+++ b/test/emacs
@@ -7,38 +7,38 @@ EXPECTED=../emacs.expected-output
 add_email_corpus
 
 test_begin_subtest "Basic notmuch-hello view in emacs"
-output=$(test_emacs '(notmuch-hello) (message (buffer-string))' 2>&1)
+output=$(test_emacs '(notmuch-hello) (princ (buffer-string))')
 expected=$(cat $EXPECTED/notmuch-hello)
 test_expect_equal "$output" "$expected"
 
 test_begin_subtest "Saved search with 0 results"
-output=$(test_emacs '(setq notmuch-show-empty-saved-searches t) (setq notmuch-saved-searches '\''(("inbox" . "tag:inbox") ("unread" . "tag:unread") ("empty" . "tag:doesnotexist"))) (notmuch-hello) (message (buffer-string))' 2>&1)
+output=$(test_emacs '(setq notmuch-show-empty-saved-searches t) (setq notmuch-saved-searches '\''(("inbox" . "tag:inbox") ("unread" . "tag:unread") ("empty" . "tag:doesnotexist"))) (notmuch-hello) (princ (buffer-string))')
 expected=$(cat $EXPECTED/notmuch-hello-with-empty)
 test_expect_equal "$output" "$expected"
 
 test_begin_subtest "No saved searches displayed (all with 0 results)"
-output=$(test_emacs '(setq notmuch-saved-searches '\''(("empty" . "tag:doesnotexist"))) (notmuch-hello) (message (buffer-string))' 2>&1)
+output=$(test_emacs '(setq notmuch-saved-searches '\''(("empty" . "tag:doesnotexist"))) (notmuch-hello) (princ (buffer-string))')
 expected=$(cat $EXPECTED/notmuch-hello-no-saved-searches)
 test_expect_equal "$output" "$expected"
 
 test_begin_subtest "Basic notmuch-search view in emacs"
-output=$(test_emacs '(notmuch-search "tag:inbox") (notmuch-test-wait) (message (buffer-string))' 2>&1)
+output=$(test_emacs '(notmuch-search "tag:inbox") (notmuch-test-wait) (princ (buffer-string))')
 expected=$(cat $EXPECTED/notmuch-search-tag-inbox)
 test_expect_equal "$output" "$expected"
 
 test_begin_subtest "Navigation of notmuch-hello to search results"
-output=$(test_emacs '(notmuch-hello) (goto-char (point-min)) (re-search-forward "inbox") (widget-button-press (point)) (notmuch-test-wait) (message (buffer-string))' 2>&1)
+output=$(test_emacs '(notmuch-hello) (goto-char (point-min)) (re-search-forward "inbox") (widget-button-press (point)) (notmuch-test-wait) (princ (buffer-string))')
 expected=$(cat $EXPECTED/notmuch-hello-view-inbox)
 test_expect_equal "$output" "$expected"
 
 test_begin_subtest "Basic notmuch-show view in emacs"
 maildir_storage_thread=$(notmuch search --output=threads id:20091117190054.GU3165@dottiness.seas.harvard.edu)
-output=$(test_emacs "(notmuch-show \"$maildir_storage_thread\") (message (buffer-string))" 2>&1)
+output=$(test_emacs "(notmuch-show \"$maildir_storage_thread\") (princ (buffer-string))")
 expected=$(cat $EXPECTED/notmuch-show-thread-maildir-storage)
 test_expect_equal "$output" "$expected"
 
 test_begin_subtest "Navigation of notmuch-search to thread view"
-output=$(test_emacs '(notmuch-search "tag:inbox") (notmuch-test-wait) (goto-char (point-min)) (re-search-forward "Working with Maildir") (notmuch-search-show-thread) (notmuch-test-wait) (message (buffer-string))' 2>&1)
+output=$(test_emacs '(notmuch-search "tag:inbox") (notmuch-test-wait) (goto-char (point-min)) (re-search-forward "Working with Maildir") (notmuch-search-show-thread) (notmuch-test-wait) (princ (buffer-string))')
 test_expect_equal "$output" "$expected"
 
 test_begin_subtest "Add tag from search view"
@@ -102,7 +102,7 @@ test_expect_equal "$output" "thread:XXX   1974-03-29 [1/1] Notmuch Test Suite; T
 test_begin_subtest "Reply within emacs"
 # We sed away everything before the ^From in the output to avoid getting
 # confused by messages such as "Parsing /home/cworth/.mailrc... done"
-output=$(test_emacs '(notmuch-search "subject:\"testing message sent via SMTP\"") (notmuch-test-wait) (notmuch-search-reply-to-thread) (message (buffer-string))' 2>&1 | sed -ne '/^From/,$ p' | sed -e 's/^In-Reply-To: <.*>$/In-Reply-To: <XXX>/')
+output=$(test_emacs '(notmuch-search "subject:\"testing message sent via SMTP\"") (notmuch-test-wait) (notmuch-search-reply-to-thread) (princ (buffer-string))' | sed -ne '/^From/,$ p' | sed -e 's/^In-Reply-To: <.*>$/In-Reply-To: <XXX>/')
 test_expect_equal "$output" "From: Notmuch Test Suite <test_suite@notmuchmail.org>
 To: user@example.com
 Subject: Re: Testing message sent via SMTP
@@ -125,7 +125,7 @@ test_expect_equal_file "$EXPECTED/attachment" attachment2.gz
 test_begin_subtest "View raw message within emacs"
 expected=$(cat $EXPECTED/raw-message-cf0c4d-52ad0a)
 first_line=$(echo "$expected" | head -n1)
-output=$(test_emacs '(notmuch-show "id:cf0c4d610911171136h1713aa59w9cf9aa31f052ad0a@mail.gmail.com") (notmuch-show-view-raw-message) (message (buffer-string))' 2>&1 | sed -ne "/$first_line/,\$ p")
+output=$(test_emacs '(notmuch-show "id:cf0c4d610911171136h1713aa59w9cf9aa31f052ad0a@mail.gmail.com") (notmuch-show-view-raw-message) (princ (buffer-string))' | sed -ne "/$first_line/,\$ p")
 test_expect_equal "$output" "$expected"
 
 test_done
diff --git a/test/emacs-large-search-buffer b/test/emacs-large-search-buffer
index a3b5c79..2751a32 100755
--- a/test/emacs-large-search-buffer
+++ b/test/emacs-large-search-buffer
@@ -21,11 +21,12 @@ notmuch new > /dev/null
 test_begin_subtest "Ensure that emacs doesn't drop results"
 expected="$(notmuch search '*' | sed -e 's/^thread:[0-9a-f]*  //' -e 's/;//' -e  's/xx*/[BLOB]/')
 End of search results."
-output=$(test_emacs '(notmuch-search "*") (notmuch-test-wait) (message (buffer-string))' 2>&1 | sed -e s',  *, ,g' -e 's/xxx*/[BLOB]/g')
+
+output=$(test_emacs '(notmuch-search "*") (notmuch-test-wait) (princ (buffer-string))' | sed -e s',  *, ,g' -e 's/xxx*/[BLOB]/g')
 test_expect_equal "$output" "$expected"
 
 test_begin_subtest "Ensure that emacs doesn't drop error messages"
-output=$(test_emacs '(notmuch-search "--this-option-does-not-exist") (notmuch-test-wait) (message (buffer-string))' 2>&1)
+output=$(test_emacs '(notmuch-search "--this-option-does-not-exist") (notmuch-test-wait) (princ (buffer-string))')
 test_expect_equal "$output" "Error: Unexpected output from notmuch search:
 Unrecognized option: --this-option-does-not-exist
 End of search results. (process returned 1)"
-- 
1.7.5.1