On Sun, Feb 23 2014, Jani Nikula <jani at nikula.org> wrote:

> On Sun, 23 Feb 2014, Mark Walters <markwalters1009 at gmail.com> wrote:
>> I was experimenting with letting notmuch new take an argument to tell it
>> to scan only a particular directory (and sub-directories) for new
>> messages. I came across the following strange behaviour which is also
>> present in master (with a fresh database)
>>
>> I have a bunch of maildirs in /home/mail: so folders .mail.foo/
>> .mail.bar/ each of which has cur/new/tmp and all the messages are in
>> cur.
>>
>> If I do mv .mail.foo .mail.bar/ and run notmuch new I get the expected
>> lots of renames (900 or so in the case I was trying). But if I then do
>> mv .mail.bar/.mail.foo . and run notmuch new almost all the messages get
>> removed (but 30 renames do get detected). If I then do touch .mail.foo/*
>> the messages get found again
>>
>> I am guessing the 30 renames might be because those 30 have duplicates
>> somewhere else.
>>
>> But the other behaviour has me puzzled.
>
> This test reproduces the problem for me, but it's not
> deterministic. With the loop, I get roughly one fail per test run:
>
>  FAIL   Rename folder back
>  --- T051-new-renames.27.expected     2014-02-23 21:37:10.121774241 +0000
>  +++ T051-new-renames.27.output               2014-02-23 21:37:10.121774241 
> +0000
>  @@ -1 +1 @@
>  -No new mail. Detected 10 file renames.
>  +No new mail. Removed 10 messages.
>  FAIL   Files remain the same
>  --- T051-new-renames.28.expected     2014-02-23 21:37:10.133774652 +0000
>  +++ T051-new-renames.28.output               2014-02-23 21:37:10.133774652 
> +0000
>  @@ -1,13 +1,3 @@
>  -/path/to/test/tmp.T051-new-renames/mail/foo/msg-121
>  -/path/to/test/tmp.T051-new-renames/mail/foo/msg-122
>  -/path/to/test/tmp.T051-new-renames/mail/foo/msg-123
>  -/path/to/test/tmp.T051-new-renames/mail/foo/msg-124
>  -/path/to/test/tmp.T051-new-renames/mail/foo/msg-125
>  -/path/to/test/tmp.T051-new-renames/mail/foo/msg-126
>  -/path/to/test/tmp.T051-new-renames/mail/foo/msg-127
>  -/path/to/test/tmp.T051-new-renames/mail/foo/msg-128
>  -/path/to/test/tmp.T051-new-renames/mail/foo/msg-129
>  -/path/to/test/tmp.T051-new-renames/mail/foo/msg-130
>   /path/to/test/tmp.T051-new-renames/mail/bar/msg-131
>   /path/to/test/tmp.T051-new-renames/mail/bar/msg-132
>   /path/to/test/tmp.T051-new-renames/mail/bar/msg-133
>
> I'm as puzzled as you are.

find /path/to/test/tmp.T051-new-renames/ might show what is the order
or 'foo' and 'bar' directories there. the order might be arbitrary
-- it surely is not alphabetical and it might not be the order
created...

The order should not matter -- and maybe it didn't and some change
made that matter... 

I'd test now but I should be ZZZ :D

>
> BR,
> Jani.

Tomi

> ---
>  test/T051-new-renames.sh | 40 ++++++++++++++++++++++++++++++++++++++++
>  1 file changed, 40 insertions(+)
>  create mode 100755 test/T051-new-renames.sh
>
> diff --git a/test/T051-new-renames.sh b/test/T051-new-renames.sh
> new file mode 100755
> index 000000000000..febe006f5888
> --- /dev/null
> +++ b/test/T051-new-renames.sh
> @@ -0,0 +1,40 @@
> +#!/usr/bin/env bash
> +test_description='"notmuch new" with directory renames'
> +. ./test-lib.sh
> +
> +for loop in `seq 10`; do
> +
> +rm -rf ${MAIL_DIR}
> +
> +for i in `seq 10`; do
> +    generate_message '[dir]=foo' '[subject]="Message foo $i"'
> +done
> +
> +for i in `seq 10`; do
> +    generate_message '[dir]=bar' '[subject]="Message bar $i"'
> +done
> +
> +test_begin_subtest "Index the messages, round $loop"
> +output=$(NOTMUCH_NEW)
> +test_expect_equal "$output" "Added 20 new messages to the database."
> +
> +all_files=$(notmuch search --output=files \*)
> +count_foo=$(notmuch count folder:foo)
> +
> +test_begin_subtest "Rename folder"
> +mv ${MAIL_DIR}/foo ${MAIL_DIR}/baz
> +output=$(NOTMUCH_NEW)
> +test_expect_equal "$output" "No new mail. Detected $count_foo file renames."
> +
> +test_begin_subtest "Rename folder back"
> +mv ${MAIL_DIR}/baz ${MAIL_DIR}/foo
> +output=$(NOTMUCH_NEW)
> +test_expect_equal "$output" "No new mail. Detected $count_foo file renames."
> +
> +test_begin_subtest "Files remain the same"
> +output=$(notmuch search --output=files \*)
> +test_expect_equal "$output" "$all_files"
> +
> +done
> +
> +test_done
> -- 
> 1.8.5.3
>
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