# [PATCH 0/2] git-p4: New test cases for branch detection

8 messages from 2012-05-22 to 2012-05-25. Participants: Vitor Antunes, Pete Wyckoff, Junio C Hamano.
Thread: https://gitlist.dev/t/30596

## Vitor Antunes, 2012-05-22 23:38

Subject: [PATCH 0/2] git-p4: New test cases for branch detection
Message-ID: <1337729891-27648-1-git-send-email-vitor.hda@gmail.com>
URL: https://gitlist.dev/e/1337729891-27648-1-git-send-email-vitor.hda%40gmail.com

```
Two new test cases to verify branch detection functionality. The first
is working properly and I think it is a good idea to make sure this is
not broken in the future. The second test case shows a limitation in the
current algorithm for new branch detection.

Vitor Antunes (2):
  git-p4: Test changelists touching two branches
  git-p4: Verify detection of "empty" branch creation

 t/t9801-git-p4-branch.sh |  110 ++++++++++++++++++++++++++++++++++++++++++++++
 1 files changed, 110 insertions(+), 0 deletions(-)

-- 
1.7.7.rc2.14.g5e044.dirty

```

## Vitor Antunes, 2012-05-22 23:38

Subject: [PATCH 1/2] git-p4: Test changelists touching two branches
Message-ID: <1337729891-27648-2-git-send-email-vitor.hda@gmail.com>
URL: https://gitlist.dev/e/1337729891-27648-2-git-send-email-vitor.hda%40gmail.com
In-Reply-To: <1337729891-27648-1-git-send-email-vitor.hda@gmail.com>

```
It is possible to modify two different branches in P4 in a single
changelist. git-p4 correctly detects this and commits the relevant
changes to the different branches separately. This test proves that and
avoid future regressions in this behavior.

Signed-off-by: Vitor Antunes <vitor.hda@gmail.com>
---
 t/t9801-git-p4-branch.sh |   54 ++++++++++++++++++++++++++++++++++++++++++++++
 1 files changed, 54 insertions(+), 0 deletions(-)

diff --git a/t/t9801-git-p4-branch.sh b/t/t9801-git-p4-branch.sh
index 2859256..89d8c59 100755
--- a/t/t9801-git-p4-branch.sh
+++ b/t/t9801-git-p4-branch.sh
@@ -306,6 +306,60 @@ test_expect_success 'git p4 clone complex branches' '
 	)
 '
 
+# Move branch3/file3 to branch4/file3 in a single changelist
+test_expect_success 'git p4 submit to two branches in a single changelist' '
+	test_when_finished cleanup_git &&
+	test_create_repo "$git" &&
+	(
+		cd "$cli" &&
+		p4 integrate //depot/branch3/file3 //depot/branch4/file3 &&
+		p4 delete //depot/branch3/file3 &&
+		p4 submit -d "Move branch3/file3 to branch4/file3"
+	)
+'
+
+# Confirm that changes to two branches done in a single changelist
+# are correctly imported by git p4
+test_expect_success 'git p4 sync changes to two branches in the same changelist' '
+	test_when_finished cleanup_git &&
+	test_create_repo "$git" &&
+	(
+		cd "$git" &&
+		git config git-p4.branchList branch1:branch2 &&
+		git config --add git-p4.branchList branch1:branch3 &&
+		git config --add git-p4.branchList branch1:branch4 &&
+		git config --add git-p4.branchList branch1:branch5 &&
+		git p4 clone --dest=. --detect-branches //depot@all &&
+		git log --all --graph --decorate --stat &&
+		git reset --hard p4/depot/branch1 &&
+		test_path_is_file file1 &&
+		test_path_is_file file2 &&
+		test_path_is_file file3 &&
+		grep update file2 &&
+		git reset --hard p4/depot/branch2 &&
+		test_path_is_file file1 &&
+		test_path_is_file file2 &&
+		test_path_is_missing file3 &&
+		! grep update file2 &&
+		git reset --hard p4/depot/branch3 &&
+		test_path_is_file file1 &&
+		test_path_is_file file2 &&
+		test_path_is_missing file3 &&
+		grep update file2 &&
+		git reset --hard p4/depot/branch4 &&
+		test_path_is_file file1 &&
+		test_path_is_file file2 &&
+		test_path_is_file file3 &&
+		! grep update file2 &&
+		git reset --hard p4/depot/branch5 &&
+		test_path_is_file file1 &&
+		test_path_is_file file2 &&
+		test_path_is_file file3 &&
+		! grep update file2 &&
+		test_path_is_missing .git/git-p4-tmp
+	)
+'
+
 test_expect_success 'kill p4d' '
 	kill_p4d
 '
-- 
1.7.7.rc2.14.g5e044.dirty

```

## Vitor Antunes, 2012-05-22 23:38

Subject: [PATCH 2/2] git-p4: Verify detection of "empty" branch creation
Message-ID: <1337729891-27648-3-git-send-email-vitor.hda@gmail.com>
URL: https://gitlist.dev/e/1337729891-27648-3-git-send-email-vitor.hda%40gmail.com
In-Reply-To: <1337729891-27648-1-git-send-email-vitor.hda@gmail.com>

```
Current implementation of new branch parent detection works on the
principle that the new branch is a complete integration, with no
changes, of the original files.
This test shows this deficiency in the particular case when the new
branch is created from a subset of the original files.

Signed-off-by: Vitor Antunes <vitor.hda@gmail.com>
---
 t/t9801-git-p4-branch.sh |   56 ++++++++++++++++++++++++++++++++++++++++++++++
 1 files changed, 56 insertions(+), 0 deletions(-)

diff --git a/t/t9801-git-p4-branch.sh b/t/t9801-git-p4-branch.sh
index 89d8c59..c8e4d86 100755
--- a/t/t9801-git-p4-branch.sh
+++ b/t/t9801-git-p4-branch.sh
@@ -360,6 +360,62 @@ test_expect_success 'git p4 sync changes to two branches in the same changelist'
 	)
 '
 
+# Create a branch by integrating a single file
+test_expect_success 'git p4 file subset branch' '
+	test_when_finished cleanup_git &&
+	test_create_repo "$git" &&
+	(
+		cd "$cli" &&
+		p4 integrate //depot/branch1/file1 //depot/branch6/file1 &&
+		p4 submit -d "Integrate file1 alone from branch1 to branch6"
+	)
+'
+
+# Check if git -p4 creates a new branch containing a single file,
+# instead of keeping the old files from the original branch
+test_expect_failure 'git p4 clone file subset branch' '
+	test_when_finished cleanup_git &&
+	test_create_repo "$git" &&
+	(
+		cd "$git" &&
+		git config git-p4.branchList branch1:branch2 &&
+		git config --add git-p4.branchList branch1:branch3 &&
+		git config --add git-p4.branchList branch1:branch4 &&
+		git config --add git-p4.branchList branch1:branch5 &&
+		git config --add git-p4.branchList branch1:branch6 &&
+		"$GITP4" clone --dest=. --detect-branches //depot@all &&
+		git log --all --graph --decorate --stat &&
+		git reset --hard p4/depot/branch1 &&
+		test_path_is_file file1 &&
+		test_path_is_file file2 &&
+		test_path_is_file file3 &&
+		grep update file2 &&
+		git reset --hard p4/depot/branch2 &&
+		test_path_is_file file1 &&
+		test_path_is_file file2 &&
+		test_path_is_missing file3 &&
+		! grep update file2 &&
+		git reset --hard p4/depot/branch3 &&
+		test_path_is_file file1 &&
+		test_path_is_file file2 &&
+		test_path_is_missing file3 &&
+		grep update file2 &&
+		git reset --hard p4/depot/branch4 &&
+		test_path_is_file file1 &&
+		test_path_is_file file2 &&
+		test_path_is_file file3 &&
+		! grep update file2 &&
+		git reset --hard p4/depot/branch5 &&
+		test_path_is_file file1 &&
+		test_path_is_file file2 &&
+		test_path_is_file file3 &&
+		! grep update file2 &&
+		git reset --hard p4/depot/branch6 &&
+		test_path_is_file file1 &&
+		! test_path_is_file file2 &&
+		! test_path_is_file file3
+	)
+'
 test_expect_success 'kill p4d' '
 	kill_p4d
 '
-- 
1.7.7.rc2.14.g5e044.dirty

```

## Pete Wyckoff, 2012-05-24 01:08

Subject: Re: [PATCH 1/2] git-p4: Test changelists touching two branches
Message-ID: <20120524010805.GA26443@padd.com>
URL: https://gitlist.dev/e/20120524010805.GA26443%40padd.com
In-Reply-To: <1337729891-27648-2-git-send-email-vitor.hda@gmail.com>

```
vitor.hda@gmail.com wrote on Wed, 23 May 2012 00:38 +0100:
> It is possible to modify two different branches in P4 in a single
> changelist. git-p4 correctly detects this and commits the relevant
> changes to the different branches separately. This test proves that and
> avoid future regressions in this behavior.
> 
> Signed-off-by: Vitor Antunes <vitor.hda@gmail.com>
> ---
>  t/t9801-git-p4-branch.sh |   54 ++++++++++++++++++++++++++++++++++++++++++++++
>  1 files changed, 54 insertions(+), 0 deletions(-)
> 
> diff --git a/t/t9801-git-p4-branch.sh b/t/t9801-git-p4-branch.sh
> index 2859256..89d8c59 100755
> --- a/t/t9801-git-p4-branch.sh
> +++ b/t/t9801-git-p4-branch.sh
> @@ -306,6 +306,60 @@ test_expect_success 'git p4 clone complex branches' '
>  	)
>  '
>  
> +# Move branch3/file3 to branch4/file3 in a single changelist
> +test_expect_success 'git p4 submit to two branches in a single changelist' '
> +	test_when_finished cleanup_git &&
> +	test_create_repo "$git" &&

You can skip the git bits here.  This is just setup for the next
test.

Ack everything else.  Nice to have the extra tests.

		-- Pete

> +	(
> +		cd "$cli" &&
> +		p4 integrate //depot/branch3/file3 //depot/branch4/file3 &&
> +		p4 delete //depot/branch3/file3 &&
> +		p4 submit -d "Move branch3/file3 to branch4/file3"
> +	)
> +'
> +
> +# Confirm that changes to two branches done in a single changelist
> +# are correctly imported by git p4
> +test_expect_success 'git p4 sync changes to two branches in the same changelist' '
> +	test_when_finished cleanup_git &&
> +	test_create_repo "$git" &&
> +	(
> +		cd "$git" &&
> +		git config git-p4.branchList branch1:branch2 &&
> +		git config --add git-p4.branchList branch1:branch3 &&
> +		git config --add git-p4.branchList branch1:branch4 &&
> +		git config --add git-p4.branchList branch1:branch5 &&
> +		git p4 clone --dest=. --detect-branches //depot@all &&
> +		git log --all --graph --decorate --stat &&
> +		git reset --hard p4/depot/branch1 &&
> +		test_path_is_file file1 &&
> +		test_path_is_file file2 &&
> +		test_path_is_file file3 &&
> +		grep update file2 &&
> +		git reset --hard p4/depot/branch2 &&
> +		test_path_is_file file1 &&
> +		test_path_is_file file2 &&
> +		test_path_is_missing file3 &&
> +		! grep update file2 &&
> +		git reset --hard p4/depot/branch3 &&
> +		test_path_is_file file1 &&
> +		test_path_is_file file2 &&
> +		test_path_is_missing file3 &&
> +		grep update file2 &&
> +		git reset --hard p4/depot/branch4 &&
> +		test_path_is_file file1 &&
> +		test_path_is_file file2 &&
> +		test_path_is_file file3 &&
> +		! grep update file2 &&
> +		git reset --hard p4/depot/branch5 &&
> +		test_path_is_file file1 &&
> +		test_path_is_file file2 &&
> +		test_path_is_file file3 &&
> +		! grep update file2 &&
> +		test_path_is_missing .git/git-p4-tmp
> +	)
> +'
> +
>  test_expect_success 'kill p4d' '
>  	kill_p4d
>  '
> -- 
> 1.7.7.rc2.14.g5e044.dirty
> 

```

## Pete Wyckoff, 2012-05-24 01:13

Subject: Re: [PATCH 2/2] git-p4: Verify detection of "empty" branch creation
Message-ID: <20120524011338.GB26443@padd.com>
URL: https://gitlist.dev/e/20120524011338.GB26443%40padd.com
In-Reply-To: <1337729891-27648-3-git-send-email-vitor.hda@gmail.com>

```
vitor.hda@gmail.com wrote on Wed, 23 May 2012 00:38 +0100:
> Current implementation of new branch parent detection works on the
> principle that the new branch is a complete integration, with no
> changes, of the original files.
> This test shows this deficiency in the particular case when the new
> branch is created from a subset of the original files.
> 
> Signed-off-by: Vitor Antunes <vitor.hda@gmail.com>
> ---
>  t/t9801-git-p4-branch.sh |   56 ++++++++++++++++++++++++++++++++++++++++++++++
>  1 files changed, 56 insertions(+), 0 deletions(-)
> 
> diff --git a/t/t9801-git-p4-branch.sh b/t/t9801-git-p4-branch.sh
> index 89d8c59..c8e4d86 100755
> --- a/t/t9801-git-p4-branch.sh
> +++ b/t/t9801-git-p4-branch.sh
> @@ -360,6 +360,62 @@ test_expect_success 'git p4 sync changes to two branches in the same changelist'
>  	)
>  '
>  
> +# Create a branch by integrating a single file
> +test_expect_success 'git p4 file subset branch' '
> +	test_when_finished cleanup_git &&
> +	test_create_repo "$git" &&

Ditto; no need for git here.

> +	(
> +		cd "$cli" &&
> +		p4 integrate //depot/branch1/file1 //depot/branch6/file1 &&
> +		p4 submit -d "Integrate file1 alone from branch1 to branch6"
> +	)
> +'
> +
> +# Check if git -p4 creates a new branch containing a single file,

Stray "-"  -------^

> +# instead of keeping the old files from the original branch
> +test_expect_failure 'git p4 clone file subset branch' '
> +	test_when_finished cleanup_git &&
> +	test_create_repo "$git" &&
> +	(
> +		cd "$git" &&
> +		git config git-p4.branchList branch1:branch2 &&
> +		git config --add git-p4.branchList branch1:branch3 &&
> +		git config --add git-p4.branchList branch1:branch4 &&
> +		git config --add git-p4.branchList branch1:branch5 &&
> +		git config --add git-p4.branchList branch1:branch6 &&
> +		"$GITP4" clone --dest=. --detect-branches //depot@all &&

Rebase error?  It fails because this should be "git p4".

> +		git log --all --graph --decorate --stat &&
> +		git reset --hard p4/depot/branch1 &&
> +		test_path_is_file file1 &&
> +		test_path_is_file file2 &&
> +		test_path_is_file file3 &&
> +		grep update file2 &&
> +		git reset --hard p4/depot/branch2 &&
> +		test_path_is_file file1 &&
> +		test_path_is_file file2 &&
> +		test_path_is_missing file3 &&
> +		! grep update file2 &&
> +		git reset --hard p4/depot/branch3 &&
> +		test_path_is_file file1 &&
> +		test_path_is_file file2 &&
> +		test_path_is_missing file3 &&
> +		grep update file2 &&
> +		git reset --hard p4/depot/branch4 &&
> +		test_path_is_file file1 &&
> +		test_path_is_file file2 &&
> +		test_path_is_file file3 &&
> +		! grep update file2 &&
> +		git reset --hard p4/depot/branch5 &&
> +		test_path_is_file file1 &&
> +		test_path_is_file file2 &&
> +		test_path_is_file file3 &&
> +		! grep update file2 &&
> +		git reset --hard p4/depot/branch6 &&
> +		test_path_is_file file1 &&
> +		! test_path_is_file file2 &&

But then it fails here too because the code is indeed buggy.
Nice to have this test too, to document the problem and maybe
prod someone to fix it someday.

> +		! test_path_is_file file3

Do use "test_path_is_missing" for these non-existant file
tests, though, please.

		-- Pete

> +	)
> +'
>  test_expect_success 'kill p4d' '
>  	kill_p4d
>  '
> -- 
> 1.7.7.rc2.14.g5e044.dirty
> 

```

## Vitor Antunes, 2012-05-24 22:42

Subject: Re: [PATCH 1/2] git-p4: Test changelists touching two branches
Message-ID: <CAOpHH-U+cG2DvTtWD25JNgLYKrNcwXgqysA0G-wr5DFhLG-DAg@mail.gmail.com>
URL: https://gitlist.dev/e/CAOpHH-U%2BcG2DvTtWD25JNgLYKrNcwXgqysA0G-wr5DFhLG-DAg%40mail.gmail.com
In-Reply-To: <20120524010805.GA26443@padd.com>

```
On Thu, May 24, 2012 at 2:08 AM, Pete Wyckoff <pw@padd.com> wrote:
> vitor.hda@gmail.com wrote on Wed, 23 May 2012 00:38 +0100:
>> It is possible to modify two different branches in P4 in a single
>> changelist. git-p4 correctly detects this and commits the relevant
>> changes to the different branches separately. This test proves that and
>> avoid future regressions in this behavior.
>>
>> Signed-off-by: Vitor Antunes <vitor.hda@gmail.com>
>> ---
>>  t/t9801-git-p4-branch.sh |   54 ++++++++++++++++++++++++++++++++++++++++++++++
>>  1 files changed, 54 insertions(+), 0 deletions(-)
>>
>> diff --git a/t/t9801-git-p4-branch.sh b/t/t9801-git-p4-branch.sh
>> index 2859256..89d8c59 100755
>> --- a/t/t9801-git-p4-branch.sh
>> +++ b/t/t9801-git-p4-branch.sh
>> @@ -306,6 +306,60 @@ test_expect_success 'git p4 clone complex branches' '
>>       )
>>  '
>>
>> +# Move branch3/file3 to branch4/file3 in a single changelist
>> +test_expect_success 'git p4 submit to two branches in a single changelist' '
>> +     test_when_finished cleanup_git &&
>> +     test_create_repo "$git" &&
>
> You can skip the git bits here.  This is just setup for the next
> test.

What about the parentheses in the next line, is it necessary? Or can I
simply remove that pair of parentheses and unindent the code in
between?

Thanks,
Vitor

> Ack everything else.  Nice to have the extra tests.
>
>                -- Pete
>
>> +     (
>> +             cd "$cli" &&
>> +             p4 integrate //depot/branch3/file3 //depot/branch4/file3 &&
>> +             p4 delete //depot/branch3/file3 &&
>> +             p4 submit -d "Move branch3/file3 to branch4/file3"
>> +     )
>> +'
>> +
>> +# Confirm that changes to two branches done in a single changelist
>> +# are correctly imported by git p4
>> +test_expect_success 'git p4 sync changes to two branches in the same changelist' '
>> +     test_when_finished cleanup_git &&
>> +     test_create_repo "$git" &&
>> +     (
>> +             cd "$git" &&
>> +             git config git-p4.branchList branch1:branch2 &&
>> +             git config --add git-p4.branchList branch1:branch3 &&
>> +             git config --add git-p4.branchList branch1:branch4 &&
>> +             git config --add git-p4.branchList branch1:branch5 &&
>> +             git p4 clone --dest=. --detect-branches //depot@all &&
>> +             git log --all --graph --decorate --stat &&
>> +             git reset --hard p4/depot/branch1 &&
>> +             test_path_is_file file1 &&
>> +             test_path_is_file file2 &&
>> +             test_path_is_file file3 &&
>> +             grep update file2 &&
>> +             git reset --hard p4/depot/branch2 &&
>> +             test_path_is_file file1 &&
>> +             test_path_is_file file2 &&
>> +             test_path_is_missing file3 &&
>> +             ! grep update file2 &&
>> +             git reset --hard p4/depot/branch3 &&
>> +             test_path_is_file file1 &&
>> +             test_path_is_file file2 &&
>> +             test_path_is_missing file3 &&
>> +             grep update file2 &&
>> +             git reset --hard p4/depot/branch4 &&
>> +             test_path_is_file file1 &&
>> +             test_path_is_file file2 &&
>> +             test_path_is_file file3 &&
>> +             ! grep update file2 &&
>> +             git reset --hard p4/depot/branch5 &&
>> +             test_path_is_file file1 &&
>> +             test_path_is_file file2 &&
>> +             test_path_is_file file3 &&
>> +             ! grep update file2 &&
>> +             test_path_is_missing .git/git-p4-tmp
>> +     )
>> +'
>> +
>>  test_expect_success 'kill p4d' '
>>       kill_p4d
>>  '
>> --
>> 1.7.7.rc2.14.g5e044.dirty
>>

```

## Junio C Hamano, 2012-05-25 00:02

Subject: Re: [PATCH 1/2] git-p4: Test changelists touching two branches
Message-ID: <7vmx4xunzr.fsf@alter.siamese.dyndns.org>
URL: https://gitlist.dev/e/7vmx4xunzr.fsf%40alter.siamese.dyndns.org
In-Reply-To: <CAOpHH-U+cG2DvTtWD25JNgLYKrNcwXgqysA0G-wr5DFhLG-DAg@mail.gmail.com>

```
Vitor Antunes <vitor.hda@gmail.com> writes:

> What about the parentheses in the next line, is it necessary? Or can I
> simply remove that pair of parentheses and unindent the code in
> between?
>
>> ...
>>> +     (
>>> +             cd "$cli" &&
>>> +             p4 integrate //depot/branch3/file3 //depot/branch4/file3 &&
>>> +             p4 delete //depot/branch3/file3 &&
>>> +             p4 submit -d "Move branch3/file3 to branch4/file3"
>>> +     )
>>> +'

If you mean this part, the parentheses to throw you into a subprocess are
required.  Otherwise, a failure in any of these three p4 commands will
leave you in $cli directory, causing the next test to start in a directory
that it does not expect.

```

## Vitor Antunes, 2012-05-25 08:32

Subject: Re: [PATCH 1/2] git-p4: Test changelists touching two branches
Message-ID: <CAOpHH-U5dRaMsMPn3X6KujSb=pnw+voaOLaEntGhi+4x1uboGA@mail.gmail.com>
URL: https://gitlist.dev/e/CAOpHH-U5dRaMsMPn3X6KujSb%3Dpnw%2BvoaOLaEntGhi%2B4x1uboGA%40mail.gmail.com
In-Reply-To: <7vmx4xunzr.fsf@alter.siamese.dyndns.org>

```
On Fri, May 25, 2012 at 1:02 AM, Junio C Hamano <gitster@pobox.com> wrote:
> Vitor Antunes <vitor.hda@gmail.com> writes:
>
>> What about the parentheses in the next line, is it necessary? Or can I
>> simply remove that pair of parentheses and unindent the code in
>> between?
>>
>>> ...
>>>> +     (
>>>> +             cd "$cli" &&
>>>> +             p4 integrate //depot/branch3/file3 //depot/branch4/file3 &&
>>>> +             p4 delete //depot/branch3/file3 &&
>>>> +             p4 submit -d "Move branch3/file3 to branch4/file3"
>>>> +     )
>>>> +'
>
> If you mean this part, the parentheses to throw you into a subprocess are
> required.  Otherwise, a failure in any of these three p4 commands will
> leave you in $cli directory, causing the next test to start in a directory
> that it does not expect.

That makes sense and is quite obvious now that I _see_ it.

Thanks for your help Junio.

Vitor

```
