Fix warnings about unchecked conversion of MergeResult

Change-Id: I1490b2209fa7b39676849c624adbc262a672f6df
Signed-off-by: David Pursehouse <david.pursehouse@sonymobile.com>

MockServletConfig: Fix warning about unchecked conversion of Enumeration

Change-Id: Ic5ce6d220e3b644032819ce4b2f31c669be1cdb9
Signed-off-by: David Pursehouse <david.pursehouse@sonymobile.com>

HugeFileTest: Make Git a class member and open in try-with-resource

There's only one test method in this module and it's quite long, so
rather than using a try-with-resource and having to indent a huge
block of existing code, make the Git a member variable that gets
initialised and closed in @Before and @After annotated methods.

The methods are named 'before' and 'after' rather than the conventional
'setUp' and 'tearDown' so as not to conflict with the names of the
existing methods in LocalDiskRepositoryTestCase.

Change-Id: I5a4a9b59f244c450dbcae9fdde7d9e0f0cd24e6f
Signed-off-by: David Pursehouse <david.pursehouse@sonymobile.com>

Suppress "unchecked cast" warnings related to UploadPackFactory.DISABLED

Change-Id: Id74694e18fec326df2b04eb796b46ccc6484b23f
Signed-off-by: David Pursehouse <david.pursehouse@sonymobile.com>

DiffAlgorithms: Fix warnings about variable hiding

Local variables/parameters named 'db' and 'cmp' were hiding class
member variables of the same name.

Change-Id: I98b770587aaf73744a93e6a3ee33d131a9fa91e9
Signed-off-by: David Pursehouse <david.pursehouse@sonymobile.com>

DirCacheBasicTest: Open ObjectInserter.Formatter in try-with-resource

Change-Id: Ie4b3e5ad9616bc56b6d8d2476d1e6c6319c1a0aa
Signed-off-by: David Pursehouse <david.pursehouse@sonymobile.com>

DirCacheBuilderIteratorTest: Open TreeWalk in try-with-resource

Change-Id: I94836315918924cba9a2b5be6b9ae417cb2ad215
Signed-off-by: David Pursehouse <david.pursehouse@sonymobile.com>

DirCacheCGitCompatabilityTest: Open TreeWalk in try-with-resource

Change-Id: I81a8bd2aba7eb0a6efaea5d6f7720aa725052157
Signed-off-by: David Pursehouse <david.pursehouse@sonymobile.com>

DirCacheCheckoutMaliciousPathTest: Open Git and RevWalk in t-w-r

Change-Id: Iacb4e25f0ada74b1a01e448216cb02c7ec18b2d7
Signed-off-by: David Pursehouse <david.pursehouse@sonymobile.com>

DirCacheIteratorTest: Open TreeWalk instances in try-with-resource

Change-Id: If23597acaebf2295b85411bf87bc0292d5dc789e
Signed-off-by: David Pursehouse <david.pursehouse@sonymobile.com>

ForPathTest: Open TreeWalk in try-with-resource

Change-Id: Ie4d0eb9c0fe1d8b8f41da161e701137cd7dd178f
Signed-off-by: David Pursehouse <david.pursehouse@sonymobile.com>

GitConstructionTest: Open Git instance in try-with-resource

Change-Id: Iddf658acd1c78161d6028cfcfb7e5c73534ae40b
Signed-off-by: David Pursehouse <david.pursehouse@sonymobile.com>

IndexDiffTest: Open Git instances in try-with-resources

Change-Id: I7fa2d16561982ddfde053f2fe78135c114b66b1d
Signed-off-by: David Pursehouse <david.pursehouse@sonymobile.com>

ManifestParserTest: Don't use deprecated StringBufferInputStream

Replace it with ByteArrayInputStream as suggested in [1].

[1] http://stackoverflow.com/a/2219543/381622

Change-Id: I5ca8d721a756a82ea5f5687a20555303eb1dfc18
Signed-off-by: David Pursehouse <david.pursehouse@sonymobile.com>

InMemoryRepository: Remove unused RevWalk from batch method signature

The RevWalk given in the arguments is not used. According to the
comment at the top of the method, a new RevWalk is intentionally
used in the implementation.

Remove the unused argument.

Change-Id: Iec81a1341d5bf377801475845b96a465753096ef
Signed-off-by: David Pursehouse <david.pursehouse@sonymobile.com>

IndexModificationTimesTest: Open Git instances in try-with-resource

Change-Id: If52c071b71f5df822b1ac276a6f665515f6c9d00
Signed-off-by: David Pursehouse <david.pursehouse@sonymobile.com>

InterIndexDiffFilterTest: Open TreeWalk in try-with-resource

Change-Id: Ie0046771b1ab1c9784d9a3bb597a9d76c6c3017d
Signed-off-by: David Pursehouse <david.pursehouse@sonymobile.com>

LockFileTest: Open Git instance in try-with-resource

Change-Id: Ie2b0e55e606f50c46e21227f23de74dbea8388e5
Signed-off-by: David Pursehouse <david.pursehouse@sonymobile.com>

Merge branch 'stable-4.1' into stable-4.2

* stable-4.1:
  JGit v4.1.2.201602141800-r

Change-Id: I4156fd539da989c989aabce68d20dd9f8b5ad47c
Signed-off-by: David Pursehouse <david.pursehouse@sonymobile.com>

JGit v4.1.2.201602141800-r

Change-Id: If0721109f389835a3a00b1a97559fd8f8c156556
Signed-off-by: Matthias Sohn <matthias.sohn@sap.com>

NoteMapTest: Open TreeWalk instances in try-with-resource

Change-Id: I70da0140fe087e7e69c28e9ddd125495d916ec1b
Signed-off-by: David Pursehouse <david.pursehouse@sonymobile.com>

ObjectDirectoryTest: Fix warnings about variable hiding

The variable and parameter named 'db' were hiding class members
with the same name.

Change-Id: I27017afdc5f49c38c6f5be494e7a21239ea601a7
Signed-off-by: David Pursehouse <david.pursehouse@sonymobile.com>

PackWriterTest: Open RevWalk in try-with-resource

Change-Id: Ic8ed941d096718e81c7ffeb166bcf7faaa2ff57d
Signed-off-by: David Pursehouse <david.pursehouse@sonymobile.com>

PatchIdDiffFormatterTest: Open Git and PatchIdDiffFormatter in try-with-resource

Change-Id: I39e898e52c3d9dffaba9dabf11c085503fbc1acf
Signed-off-by: David Pursehouse <david.pursehouse@sonymobile.com>

PathSuffixFilterTest: Open TreeWalk in try-with-resource

Change-Id: If0ee71f09a5464e27f0496dac364f8f9bb015eb6
Signed-off-by: David Pursehouse <david.pursehouse@sonymobile.com>

PostOrderTreeWalkTest: Open TreeWalk in try-with-resource

Also remove unnecessary nesting in test methods.

Change-Id: Id59f8403c0a7b38ebb6b3a24814257cd59ea575d
Signed-off-by: David Pursehouse <david.pursehouse@sonymobile.com>

PullCommandWithRebaseTest: Open RevWalk in try-with-resource

Change-Id: I16f4d219e8b103d30149b2a94d3484424f3de84b
Signed-off-by: David Pursehouse <david.pursehouse@sonymobile.com>

PushCommandTest: Open Git instances in try-with-resource

Change-Id: I3a8e28a4097e868a34ee1b23256c7f28d570cd75
Signed-off-by: David Pursehouse <david.pursehouse@sonymobile.com>

RacyGitTests: Open NameConflictTreeWalk in try-with-resource

Change-Id: Ic17b05fd7d056761b352168de97efb607a289276
Signed-off-by: David Pursehouse <david.pursehouse@sonymobile.com>

RecursiveMergerTest: Open TreeWalk and BufferedReader in try-with-resource

Change-Id: I381d535eb4ed7535ba8541c5320f81ce11d5b173
Signed-off-by: David Pursehouse <david.pursehouse@sonymobile.com>

ReflogConfigTest: refactor commit method to avoid variable hiding

The author and committer parameters were hiding class members of
the same name.

Since the passed in PersonIdent instances were being created from
the class members anyway, remove the parameters and instead create
the PersonIdent instances inline in the method.

Change-Id: I66b057df388835d57f332fdcbadb8a9f4e1094a4
Signed-off-by: David Pursehouse <david.pursehouse@sonymobile.com>

Update .mailmap

- List names alphabetically by Firstname Surname
- Replace tabs with spaces
- Add missing name

Change-Id: Ib320dad316e0f6e3e95363c4d6a64744032db857
Signed-off-by: David Pursehouse <david.pursehouse@sonymobile.com>

RefDirectoryTest: Fix warning about member variable hiding

The parameter name 'totalWork' was hiding a class member variable
of the same name.

Change-Id: I646525e82900e23ffabfc756bcf5052ef873656a
Signed-off-by: David Pursehouse <david.pursehouse@sonymobile.com>

ReflogResolveTest: Open Git instances in try-with-resource

Change-Id: I11ee38bfcf4951bf05a1632df08b1d074d38338b
Signed-off-by: David Pursehouse <david.pursehouse@sonymobile.com>

ReflogTest: Open Git instances in try-with-resource

Change-Id: I950b6f16148cfe11de729b04904f88d6e4c28b9a
Signed-off-by: David Pursehouse <david.pursehouse@sonymobile.com>

RepoCommandTest: Open Git instances in try-with-resource

Change-Id: I171e84eeb7862e74761ba6c961f14c86beaba9e7
Signed-off-by: David Pursehouse <david.pursehouse@sonymobile.com>

Merge branch 'stable-4.1' into stable-4.2

* stable-4.1:
  Fix diff for added and removed submodule

Change-Id: I37dd71ed19b06e9bbcffe37370081ab875c6d8d4
Signed-off-by: Matthias Sohn <matthias.sohn@sap.com>

RepoProject: Fix warnings about variable hiding

Method parameter names were hiding class members of the same
name.

Change-Id: I182f2715894ac4259b09a371cb4e0eb24f52518a
Signed-off-by: David Pursehouse <david.pursehouse@sonymobile.com>

RepoTest: Open Git in try-with-resources

Allocate a new Git for each part of the test, rather than
reassigning to the same variable.

Change-Id: Ic83778bbff0b2f57d37b95aef70324859d42cd58
Signed-off-by: David Pursehouse <david.pursehouse@sonymobile.com>

RepositoryResolveTest: Open Git in try-with-resource

Change-Id: Ibb612f3d8fd0f9913291430474311d9da62f4e6f
Signed-off-by: David Pursehouse <david.pursehouse@sonymobile.com>

RepositoryTestCase: Open autocloseable types in try-with-resource

ObjectInserter.Formatter and Git are autocloseable and can be
opened in try-with-resource to prevent a resource leak warning.

Change-Id: I48c4001aaa7d9c1e36369e9799bfbb7c3bb46d8b
Signed-off-by: David Pursehouse <david.pursehouse@sonymobile.com>

ResetCommandTest: Use Git member in testHardResetAfterSquashMerge

Use the class member instance of the Git rather than creating
a new one in the test. This makes it consistent with the other
tests in the module.

Change-Id: Ibe822ded76a80b94922e92bbc6f5d90bcc52f8a3
Signed-off-by: David Pursehouse <david.pursehouse@sonymobile.com>

ResolveMergerTest: Open Git in try-with-resource

Change-Id: Ic378ec25c4a3ea4354ee643029f87e46b6449ed4
Signed-off-by: David Pursehouse <david.pursehouse@sonymobile.com>

RevCommitListTest: Open Git and RevWalk in try-with-resource

Change-Id: I4ba273a364a12f82a3b3b06ba050bc633411daf6
Signed-off-by: David Pursehouse <david.pursehouse@sonymobile.com>

RevCommitParseTest: Open ObjectInserter.Formatter in try-with-resource

Change-Id: Iaa87c51bc19b4fa832393c11db20b69865d30d48
Signed-off-by: David Pursehouse <david.pursehouse@sonymobile.com>

RevObjectTest: Open RevWalk in try-with-resource

Change-Id: I19bcbb2f12036c5043436f3d544ccefbb7385b8d
Signed-off-by: David Pursehouse <david.pursehouse@sonymobile.com>

RevTagParseTest: Open ObjectInserter.Formatter in try-with-resource

Change-Id: I2341977223be1dc5252492f4775626122f56496b
Signed-off-by: David Pursehouse <david.pursehouse@sonymobile.com>

RevertCommandTest: Open Git in try-with-resource

Change-Id: I659adbb0a6f741c4c6f615c8a24b4603c3f6681e
Signed-off-by: David Pursehouse <david.pursehouse@sonymobile.com>

SquashMessageFormatterTest: Open git in try-with-resource

Change-Id: Ife94d1f0279ed3671a9bca79fb26c0403549fa17
Signed-off-by: David Pursehouse <david.pursehouse@sonymobile.com>

StatusCommandTest: Open Git in try-with-resource

Change-Id: Id13ad9fa3157d0479da12fb8184437be3ca8c948
Signed-off-by: David Pursehouse <david.pursehouse@sonymobile.com>

SubmoduleAddTest: Open Git in try-with-resource

Change-Id: I1276ce206e891729adfa681e00952ca0ba6ffc53
Signed-off-by: David Pursehouse <david.pursehouse@sonymobile.com>

SymlinksTest: Open git and TreeWalk in try-with-resource

Change-Id: I0fd1933e843375029fa795447b688f23a893f84b
Signed-off-by: David Pursehouse <david.pursehouse@sonymobile.com>

T0003_BasicTest: Open autocloseable types in try-with-resource

FileRepository and ObjectInserter.Formatter are autocloseable, so
use try-with-resource for these.

Remove suppression of unused variable warning that is no longer
necessary.

Change-Id: I270829f0a4030083c9599eb5785b0145dc590ed8
Signed-off-by: David Pursehouse <david.pursehouse@sonymobile.com>

TextHashFunctions: Fix warnings about variable hiding

The local variables/arguments named 'db' were hiding the member
variable of the same name in the superclass TextBuiltin.

Change-Id: Ic49dcb7cc2a1b3fb46ad78450042c8c8fb464a80
Signed-off-by: David Pursehouse <david.pursehouse@sonymobile.com>

TreeFilterTest: Open TreeWalk in try-with-resource

Change-Id: If100a66e544926bcffe9a9a0b31bfd4806902864
Signed-off-by: David Pursehouse <david.pursehouse@sonymobile.com>

TreeWalkJava7Test: Open TreeWalk in try-with-resource

Change-Id: I99a483c482b5395653b0d57b368ec1b5fdba450c
Signed-off-by: David Pursehouse <david.pursehouse@sonymobile.com>

Fix diff for added and removed submodule

Since If13f7b406, submodule difference are shown as a hunk. The issue
was that added and removed submodule were considered as Edit.REPLACE
instead of Edit.INSERT and Edit.DELETE in the DiffFormatter result.

Change-Id: I4330c2aa3f10e29d7d6b0b2e5286e59293a06239
Signed-off-by: Hugo Arès <hugo.ares@ericsson.com>

DirCacheCheckoutTest: Open Git and TreeWalk in try-with-resource

Change-Id: Icc8eda841e6a437e1acf3438525014e7c46d5eb2
Signed-off-by: David Pursehouse <david.pursehouse@sonymobile.com>

CommitCommand: Remove declaration of unthrown exception

Change-Id: I1795b1e510ab170f062ee6c5988d7a7567abe260
Signed-off-by: David Pursehouse <david.pursehouse@sonymobile.com>

Branch: Fix variable hiding warning

The Branch class has a member named 'branch', which was being
hidden by the local variable of the same name used in a for-loop.

Change-Id: I334092010a9c80686fb79713852d4bfa166ce12f
Signed-off-by: David Pursehouse <david.pursehouse@sonymobile.com>

ApplyCommandTest: Open Git in try-with-resource

Also, add missing braces around if-block.

Change-Id: I9390b2c7d5c4507923b6f06271a070dc868534e5
Signed-off-by: David Pursehouse <david.pursehouse@sonymobile.com>

PackFileTest: Open ObjectInserter.Formatter in try-with-resource

Change-Id: I9c56b5efdb9c13b929073a786092a707fca21281
Signed-off-by: David Pursehouse <david.pursehouse@sonymobile.com>

FileTreeIteratorTest: Open Git and RevWalk in try-with-resource

Change-Id: I6e68c4b028e0aa01964eace10307372060371df7
Signed-off-by: David Pursehouse <david.pursehouse@sonymobile.com>

RebaseCommandTest: Open RevWalk in try-with-resource

Change-Id: If7b7a90171d1349d634a84f135471ebac29e3210
Signed-off-by: David Pursehouse <david.pursehouse@sonymobile.com>

PullCommandTest: Open RevWalk in try-with-resource

Change-Id: I676cd7ef4bb29f980a313acd77506dd070e6c98f
Signed-off-by: David Pursehouse <david.pursehouse@sonymobile.com>

BlameGeneratorTest: Create Git instances in try-with-resource

Change-Id: I2dc4191603fbd6c3214763b869882c51b0e53284
Signed-off-by: David Pursehouse <david.pursehouse@sonymobile.com>

Remove unnecessary suppression of deprecation warnings in tests

Change-Id: I722f8c2e80129e0129349b55a53b29626e2af21c
Signed-off-by: David Pursehouse <david.pursehouse@sonymobile.com>

DiffEntryTest: Open Git and TreeWalk in try-with-resource

Change-Id: If4a49268b9b7ec3a44ed1508ed78db365b0c9e5b
Signed-off-by: David Pursehouse <david.pursehouse@sonymobile.com>

DiffCommandTest: Open Git and RevWalk in try-with-resource

Change-Id: I966f7e5053651661abc7de63c968e1f5bf2de464
Signed-off-by: David Pursehouse <david.pursehouse@sonymobile.com>

CommitCommandTest: Open Git and TreeWalk in try-with-resource

Change-Id: I65a6fd7028e209c300d992c2756100c09ab4dc19
Signed-off-by: David Pursehouse <david.pursehouse@sonymobile.com>

Merge changes Ifdb33501,Idc7b7bbd,Ia3db8696,I4ef82311,I3ad58d4c, ... into stable-4.2

* changes:
  ConcurrentRepackTest: Don't use deprecated WindowCache.reconfigure
  ConcurrentRepackTest: Open RevWalk in try-with-resource
  CommitOnlyTest: Open RevWalk in try-with-resource
  UnpackedObjectTest: Create ObjectInserter.Formatter in try-with-resource
  FileRepositoryBuilderTest: Use try-with-resource for auto-closeables
  RepositorySetupWorkDirTest: Fix "resource leak" warnings

ConcurrentRepackTest: Don't use deprecated WindowCache.reconfigure

Replace with calls to WindowCacheConfig.install() as mentioned in
WindowCache.reconfigure's deprecation notice.

Change-Id: Ifdb33501a2209239029c815b1e4e844ea5b56075
Signed-off-by: David Pursehouse <david.pursehouse@sonymobile.com>

ConcurrentRepackTest: Open RevWalk in try-with-resource

Change-Id: Idc7b7bbdc1df05372b873cbe4c495474f3ffd64b
Signed-off-by: David Pursehouse <david.pursehouse@sonymobile.com>

CommitOnlyTest: Open RevWalk in try-with-resource

Change-Id: Ia3db8696f66f8d294e1d443fb54e716d26d517b1
Signed-off-by: David Pursehouse <david.pursehouse@sonymobile.com>

UnpackedObjectTest: Create ObjectInserter.Formatter in try-with-resource

The ObjectInserter.Formatter instance is only used to call idFor.

Factor out a utility method to do that.

Change-Id: I4ef823110c2152ac7905681df3217eb8001f5bd9
Signed-off-by: David Pursehouse <david.pursehouse@sonymobile.com>

FileRepositoryBuilderTest: Use try-with-resource for auto-closeables

Use try-with-resource to create instances of FileRepository and
FileWriter.

"resource" and "unused" warnings no longer occur, so remove the
suppression annotations.

Change-Id: I3ad58d4cc2d4c019cd8edda7cb401e9d9f3fb790
Signed-off-by: David Pursehouse <david.pursehouse@sonymobile.com>

RepositorySetupWorkDirTest: Fix "resource leak" warnings

Use FileRepositoryBuilder to create the Repository, except in cases
where the creation was already in a try-block. Convert those to use
a try-with-resource.

Change-Id: I7d7adeee81bda6e80d91a119c7d690de3d00dc2b
Signed-off-by: David Pursehouse <david.pursehouse@sonymobile.com>

Remove java7 bundle from Maven central scripts

The bundle org.eclipse.jgit.java7 was deleted in 4.0

Change-Id: I57dbc0b18eaf164c8f53cc2b776ecb80481a993d
Signed-off-by: Matthias Sohn <matthias.sohn@sap.com>

Prepare 4.2.1-SNAPSHOT builds

Change-Id: Ic9eac53b10ac97b2038b334d388ae3d21393f993
Signed-off-by: Matthias Sohn <matthias.sohn@sap.com>

JGit v4.2.0.201601211800-r

Change-Id: I89f33b0da81ff499315baa5311f95f31724fa510
Signed-off-by: Matthias Sohn <matthias.sohn@sap.com>

Add progress monitor to Merger

Monitoring progress of merges can be useful for users for large
repositories or complex merge processes that take some time.

This enables setting a monitor. Existing merge implementations in jgit
do not yet report progress if a monitor is set. This will be added in a
later change.

Change-Id: I17b978b3fc91750dd88649638b90a46820a0877c
Signed-off-by: Laurent Delaigue <laurent.delaigue@obeo.fr>
Signed-off-by: Matthias Sohn <matthias.sohn@sap.com>

Fix TransportException when reading bundle

When reading a bundle file, commit messages who's oneline format is
longer than 982 characters caused JGit to treat subsequent text in
the commit as a SHA, then throw a TransportException because it's
not a valid SHA.

Now the readLine method will read all the way to the end of the
line, not just the first 1024 characters of it.

Change-Id: If15b491aa9a1e4fd9b8bbed2dd9e6be47a64ccb7
Signed-off-by: Chris Gavin <chris@chrisgavin.me>

Fix unused throws CorruptObjectException from addTree

2262a794b48ea removed throws CorruptObjectException, but was not
compiled under Eclipse and did not see errors generated by Eclipse.
Maven build silently ignored the unnecessary code.

Change-Id: I6e9014adcc604588e10e5963d13d0c6ef0e1c617

Merge branch 'master' into stable-4.2

Change-Id: Ieec4f51aedadf5734ae0e3f4e8713248a3c4fc52
Signed-off-by: Matthias Sohn <matthias.sohn@sap.com>

BundleWriterTest: Open RevWalk in try-with-resource

Change-Id: Ie25770a73b19d6522bad9fdc0966f48370f96265
Signed-off-by: David Pursehouse <david.pursehouse@sonymobile.com>

DiffFormatterTest: Remove accidentally added trailing whitespace

Change-Id: Ia7a3b05b79c3a5530a4445e6e48ceae445425224
Signed-off-by: David Pursehouse <david.pursehouse@sonymobile.com>

CherryPickCommandTest: Create Git instances in try-with-resource

Change-Id: I9d49258bdf12f3221013c37cfb8a21ea27f28860
Signed-off-by: David Pursehouse <david.pursehouse@sonymobile.com>

DiffFormatterTest: Create auto-closeable instances in try-with-resource

Git, ByteArrayOutputStream, and DiffFormatter are auto-closeable and
should be managed in try-with-resource.

Change-Id: I83395116acb4b4f7cd4300fd69564355bc07e4bb
Signed-off-by: David Pursehouse <david.pursehouse@sonymobile.com>

ConfigTest: Create Git instance in try-with-resource

Change-Id: Ie65c69e0f1aed95bcdf68ebd68d21b3e2590b41c
Signed-off-by: David Pursehouse <david.pursehouse@sonymobile.com>

CommitAndLogCommandTest: Use assumeFalse to skip test on Windows

Use JUnit's assumeFalse method to cause the test to skip when
run on Windows.

Change-Id: I3f59440cfe62c37c127e381052b60471fbe8ec5e
Signed-off-by: David Pursehouse <david.pursehouse@sonymobile.com>

CommitAndLogCommandTest: Create Git instances in try-with-resource

Change-Id: Id06417f1d3914cd3addacdbe9b5801a06cc3955f
Signed-off-by: David Pursehouse <david.pursehouse@sonymobile.com>

AddCommandTest: Create Git instances in try-with-resource

Change-Id: Idf42f03099eeb9975fef9492ea8a75776afc2a3c
Signed-off-by: David Pursehouse <david.pursehouse@sonymobile.com>

ArchiveCommandTest: Create Git instances in try-with-resource

Change-Id: Icbfd92395db85818736142fd3fb3432385e89ca9
Signed-off-by: David Pursehouse <david.pursehouse@sonymobile.com>

Merge "TreeWalk: Remove CorruptObjectException from addTree(AbstractTreeIterator)"

TreeWalk: Remove CorruptObjectException from addTree(AbstractTreeIterator)

This form of addTree() does not parse any objects and cannot throw the
declared checked exception.  Callers are being forced to try-catch
CorruptObjectException that cannot occur when the iterator instance
has already been constructed.

Change-Id: Id338035302903bab81569d1576eab063eee0885a

Fix ResetCommand to return the resulting ref

ResetCommand was not returning the updated ref as a result of the call()
method. Since the ResetCommand is always updating the same ref (HEAD)
this should always be the HEAD ref.

Bug: 440750
Change-Id: I7974975c3ab05e68c208384e69cf0692ded6e8db
Signed-off-by: Matthias Sohn <matthias.sohn@sap.com>

Add option to allow empty commits to CommitCommand

CommitCommand should allow to specify whether empty commits (commits
having the same tree as the sole predecessor commit) are allowed or not.
Similar to native git's "--allow-empty" flag.

The defaults differ between JGit and native git even after this change.
When not specifying paths then by default JGit allows to create empty
commits while native git does not. It would be API breaking to change
this now.

Bug: 460301
Change-Id: I88feb0c3ffb2c686b1d0594e669729b065cda4cb
Signed-off-by: Matthias Sohn <matthias.sohn@sap.com>

TagCommandTest: Instantiate Git and RevWalk objects in try-with-resource

Change-Id: I08959650e2970e964bc864dc6d120d7bddfd8232
Signed-off-by: David Pursehouse <david.pursehouse@sonymobile.com>

BlameCommandTest: Instantiate Git objects in try-with-resource

Change-Id: Icb9e6bb9ee99589fa2e0388c8b305a8a1f5954db
Signed-off-by: David Pursehouse <david.pursehouse@sonymobile.com>

SideBandOutputStreamTest: Use try-with-resource

Factor out the creation of the SideBandOutputStream objects into
a utility method that wraps it in a try-with-resource.

Remove the "unused" suppression that is now unnecessary, and add
declaration that the tests methods can throw Exception.

Change-Id: Iff02e4e3532bd6ab6e423f197e70d44c4f328d0b
Signed-off-by: David Pursehouse <david.pursehouse@sonymobile.com>