test: sanitize dates in emacs, raw, and text output

add a new function notmuch_date_sanitize for rfc822-ish things. Add
date sanitization to notmuch_show_sanitize_all and use it more places.

This is all in aid of a transition to unique timestamps on messages.

test/emacs

@@ -86,15 +86,16 @@ add_message "[subject]=\"message-with-invalid-from\"" \
 	    "[from]=\"\\\"Invalid \\\" From\\\" <test_suite@notmuchmail.org>\""
 thread=$(notmuch search --output=threads subject:message-with-invalid-from)
 test_emacs "(notmuch-show \"$thread\")
-	    (test-output)"
+	    (test-output \"OUTPUT.raw\")"
 cat <<EOF >EXPECTED
 "Invalid " (2001-01-05) (inbox)
 Subject: message-with-invalid-from
 To: Notmuch Test Suite <test_suite@notmuchmail.org>
-Date: Fri, 05 Jan 2001 15:43:57 +0000
+Date: GENERATED_DATE
 
 This is just a test message (#1)
 EOF
+notmuch_date_sanitize < OUTPUT.raw > OUTPUT
 test_expect_equal_file OUTPUT EXPECTED
 
 test_begin_subtest "Navigation of notmuch-search to thread view"
@@ -605,11 +606,11 @@ Q: Why is top-posting such a bad thing?
 A: Top-posting.
 Q: What is the most annoying thing in e-mail?"'
 test_emacs "(notmuch-show \"top-posting\")
-	    (test-visible-output)"
+	    (test-visible-output \"OUTPUT.raw\")"
 echo "Notmuch Test Suite <test_suite@notmuchmail.org> (2001-01-05) (inbox)
 Subject: The problem with top-posting
 To: Notmuch Test Suite <test_suite@notmuchmail.org>
-Date: Fri, 05 Jan 2001 15:43:57 +0000
+Date: GENERATED_DATE
 
 A: Because it messes up the order in which people normally read text.
 Q: Why is top-posting such a bad thing?
@@ -618,13 +619,14 @@ Q: What is the most annoying thing in e-mail?
 Top Poster <top@poster.com> (2001-01-05) (inbox unread)
 Subject: Re: The problem with top-posting
 To: Notmuch Test Suite <test_suite@notmuchmail.org>
-Date: Fri, 05 Jan 2001 15:43:57 +0000
+Date: GENERATED_DATE
 
 Thanks for the advice! I will be sure to put it to good use.
 
 -Top Poster
 
 [ 9-line hidden original message. Click/Enter to show. ]" > EXPECTED
+notmuch_date_sanitize < OUTPUT.raw > OUTPUT
 test_expect_equal_file OUTPUT EXPECTED
 
 test_begin_subtest "Hiding message in notmuch-show view"

test/emacs-show

@@ -19,13 +19,14 @@ cat <<EOF >EXPECTED
 Notmuch Test Suite <test_suite@notmuchmail.org> (2001-01-05) (inbox)
 Subject: Hiding Original Message region at beginning of a message
 To: Notmuch Test Suite <test_suite@notmuchmail.org>
-Date: Fri, 05 Jan 2001 15:43:57 +0000
+Date: GENERATED_DATE
 
 [ 2-line hidden original message. Click/Enter to show. ]
 EOF
 
 test_emacs "(notmuch-show \"id:$message_id\")
-	    (test-visible-output)"
+	    (test-visible-output \"OUTPUT.raw\")"
+notmuch_date_sanitize < OUTPUT.raw > OUTPUT
 test_expect_equal_file OUTPUT EXPECTED
 
 test_begin_subtest "Bare subject #1"
@@ -130,12 +131,12 @@ mid:abc%20def
 mid:abc. mid:abc, mid:abc;"'
 test_emacs '(notmuch-show "id:'$gen_msg_id'")
 	(notmuch-test-mark-links)
-	(test-visible-output)'
+	(test-visible-output "OUTPUT.raw")'
 cat <<EOF >EXPECTED
 Notmuch Test Suite <test_suite@notmuchmail.org> (2001-01-05) (inbox)
 Subject: id buttonization
 To: Notmuch Test Suite <test_suite@notmuchmail.org>
-Date: Fri, 05 Jan 2001 15:43:57 +0000
+Date: GENERATED_DATE
 
 <<id:abc>>
 <<id:abc.def>>. <<id:abc,def>>, <<id:abc;def>>; <<id:abc:def>>:
@@ -159,6 +160,7 @@ cid:xxx
 <<mid:abc%20def>>
 <<mid:abc>>. <<mid:abc>>, <<mid:abc>>;
 EOF
+notmuch_date_sanitize < OUTPUT.raw > OUTPUT
 test_expect_equal_file OUTPUT EXPECTED
 
 

test/encoding

@@ -5,14 +5,14 @@ test_description="encoding issues"
 test_begin_subtest "Message with text of unknown charset"
 add_message '[content-type]="text/plain; charset=unknown-8bit"' \
 	    "[body]=irrelevant"
-output=$(notmuch show id:${gen_msg_id} 2>&1 | notmuch_show_sanitize)
+output=$(notmuch show id:${gen_msg_id} 2>&1 | notmuch_show_sanitize_all)
-test_expect_equal "$output" "message{ id:msg-001@notmuch-test-suite depth:0 match:1 excluded:0 filename:/XXX/mail/msg-001
+test_expect_equal "$output" "message{ id:XXXXX depth:0 match:1 excluded:0 filename:XXXXX
 header{
 Notmuch Test Suite <test_suite@notmuchmail.org> (2001-01-05) (inbox unread)
 Subject: Message with text of unknown charset
 From: Notmuch Test Suite <test_suite@notmuchmail.org>
 To: Notmuch Test Suite <test_suite@notmuchmail.org>
-Date: Fri, 05 Jan 2001 15:43:57 +0000
+Date: GENERATED_DATE
 header}
 body{
 part{ ID: 1, Content-type: text/plain
@@ -26,7 +26,7 @@ add_message '[content-type]="text/plain; charset=iso-8859-2"' \
             '[content-transfer-encoding]=8bit' \
             '[subject]="ISO-8859-2 encoded message"' \
             "[body]=$'Czech word tu\350\362\341\350\350\355 means pinguin\'s.'" # ISO-8859-2 characters are generated by shell's escape sequences
-output=$(notmuch search tučňáččí 2>&1 | notmuch_show_sanitize)
+output=$(notmuch search tučňáččí 2>&1 | notmuch_show_sanitize_all)
 test_expect_equal "$output" "thread:0000000000000002   2001-01-05 [1/1] Notmuch Test Suite; ISO-8859-2 encoded message (inbox unread)"
 
 test_begin_subtest "RFC 2047 encoded word with spaces"

test/raw

@@ -11,22 +11,22 @@ output=$(notmuch show --format=raw "*" 2>&1)
 test_expect_equal "$output" "Error: search term did not match precisely one message."
 
 test_begin_subtest "Show a raw message"
-output=$(notmuch show --format=raw id:msg-001@notmuch-test-suite)
+output=$(notmuch show --format=raw id:msg-001@notmuch-test-suite | notmuch_date_sanitize)
 test_expect_equal "$output" "From: Notmuch Test Suite <test_suite@notmuchmail.org>
 To: Notmuch Test Suite <test_suite@notmuchmail.org>
 Message-Id: <msg-001@notmuch-test-suite>
 Subject: Test message #1
-Date: Fri, 05 Jan 2001 15:43:57 +0000
+Date: GENERATED_DATE
 
 This is just a test message (#1)"
 
 test_begin_subtest "Show another raw message"
-output=$(notmuch show --format=raw id:msg-002@notmuch-test-suite)
+output=$(notmuch show --format=raw id:msg-002@notmuch-test-suite | notmuch_date_sanitize)
 test_expect_equal "$output" "From: Notmuch Test Suite <test_suite@notmuchmail.org>
 To: Notmuch Test Suite <test_suite@notmuchmail.org>
 Message-Id: <msg-002@notmuch-test-suite>
 Subject: Test message #2
-Date: Fri, 05 Jan 2001 15:43:57 +0000
+Date: GENERATED_DATE
 
 This is just a test message (#2)"
 

test/test-lib.sh

@@ -618,7 +618,8 @@ notmuch_show_sanitize_all ()
 {
     sed \
 	-e 's| filename:.*| filename:XXXXX|' \
-	-e 's| id:[^ ]* | id:XXXXX |'
+	-e 's| id:[^ ]* | id:XXXXX |' | \
+	notmuch_date_sanitize
 }
 
 notmuch_json_show_sanitize ()
@@ -641,6 +642,12 @@ notmuch_emacs_error_sanitize ()
 	-e 's/^\[.*\]$/[XXX]/' \
 	-e "s|^\(command: \)\{0,1\}/.*/$command|\1YYY/$command|"
 }
+
+notmuch_date_sanitize ()
+{
+    sed \
+	-e 's/^Date: Fri, 05 Jan 2001 .*0000/Date: GENERATED_DATE/'
+}
 # End of notmuch helper functions
 
 # Use test_set_prereq to tell that a particular prerequisite is available.