test: add emacs_fcc_message that does not use smtp-dummy

Most of the tests previously using emacs_deliver_message do not use
the actual transmitted message, so we replace it with a simpler (and
presumably more reliable function) that only saves (and indexes) an
fcc copy of the message.

test/crypto

@@ -28,12 +28,8 @@ add_gnupg_home
 # get key fingerprint
 FINGERPRINT=$(gpg --no-tty --list-secret-keys --with-colons --fingerprint | grep '^fpr:' | cut -d: -f10)
 
-# for some reason this is needed for emacs_deliver_message to work,
-# although I can't figure out why
-add_email_corpus
-
 test_expect_success 'emacs delivery of signed message' \
-'emacs_deliver_message \
+'emacs_fcc_message \
     "test signed message 001" \
     "This is a test signed message." \
     "(mml-secure-message-sign)"'
@@ -143,7 +139,7 @@ cat <<EOF >TESTATTACHMENT
 This is a test file.
 EOF
 test_expect_success 'emacs delivery of encrypted message with attachment' \
-'emacs_deliver_message \
+'emacs_fcc_message \
     "test encrypted message 001" \
     "This is a test encrypted message.\n" \
     "(mml-attach-file \"TESTATTACHMENT\") (mml-secure-message-encrypt)"'
@@ -270,7 +266,7 @@ test_expect_equal_json \
 mv "${GNUPGHOME}"{.bak,}
 
 test_expect_success 'emacs delivery of encrypted + signed message' \
-'emacs_deliver_message \
+'emacs_fcc_message \
     "test encrypted message 002" \
     "This is another test encrypted message.\n" \
     "(mml-secure-message-sign-encrypt)"'

test/emacs

@@ -771,7 +771,7 @@ test_expect_equal_file OUTPUT EXPECTED
 
 test_begin_subtest "Do not call notmuch for non-inlinable application/mpeg parts"
 id='message-with-application/mpeg-attachment@notmuchmail.org'
-emacs_deliver_message \
+emacs_fcc_message \
     'Message with application/mpeg attachment' \
     '' \
     "(message-goto-eoh)
@@ -786,7 +786,7 @@ test_expect_equal $(notmuch_counter_value) 1
 
 test_begin_subtest "Do not call notmuch for non-inlinable audio/mpeg parts"
 id='message-with-audio/mpeg-attachment@notmuchmail.org'
-emacs_deliver_message \
+emacs_fcc_message \
     'Message with audio/mpeg attachment' \
     '' \
     "(message-goto-eoh)

test/json

@@ -38,7 +38,7 @@ test_expect_equal_json "$output" "[[[{\"id\": \"${gen_msg_id}\", \"match\": true
 test_begin_subtest "Show message: json, inline attachment filename"
 subject='json-show-inline-attachment-filename'
 id="json-show-inline-attachment-filename@notmuchmail.org"
-emacs_deliver_message \
+emacs_fcc_message \
     "$subject" \
     'This is a test message with inline attachment with a filename' \
     "(mml-attach-file \"$TEST_DIRECTORY/README\" nil nil \"inline\")

test/sexp

@@ -29,7 +29,7 @@ test_expect_equal "$output" "((((:id \"${gen_msg_id}\" :match t :excluded nil :f
 test_begin_subtest "Show message: sexp, inline attachment filename"
 subject='sexp-show-inline-attachment-filename'
 id="sexp-show-inline-attachment-filename@notmuchmail.org"
-emacs_deliver_message \
+emacs_fcc_message \
     "$subject" \
     'This is a test message with inline attachment with a filename' \
     "(mml-attach-file \"$TEST_DIRECTORY/README\" nil nil \"inline\")

test/test-lib.sh

@@ -470,6 +470,36 @@ emacs_deliver_message ()
     notmuch new >/dev/null
 }
 
+# Pretend to deliver a message with emacs. Really save it to a file
+# and add it to the database
+#
+# Uses emacs to generate and deliver a message to the mail store.
+# Accepts arbitrary extra emacs/elisp functions to modify the message
+# before sending, which is useful to doing things like attaching files
+# to the message and encrypting/signing.
+emacs_fcc_message ()
+{
+    local subject="$1"
+    local body="$2"
+    shift 2
+    # before we can send a message, we have to prepare the FCC maildir
+    mkdir -p "$MAIL_DIR"/sent/{cur,new,tmp}
+
+    test_emacs \
+	"(let ((message-send-mail-function (lambda () t))
+               (mail-host-address \"example.com\"))
+	   (notmuch-mua-mail)
+	   (message-goto-to)
+	   (insert \"test_suite@notmuchmail.org\nDate: 01 Jan 2000 12:00:00 -0000\")
+	   (message-goto-subject)
+	   (insert \"${subject}\")
+	   (message-goto-body)
+	   (insert \"${body}\")
+	   $@
+	   (message-send-and-exit))" || return 1
+    notmuch new >/dev/null
+}
+
 # Generate a corpus of email and add it to the database.
 #
 # This corpus is fixed, (it happens to be 50 messages from early in