Fix up the tests.

Author: Rob Rix

ObjectiveGitTests/GTBranchSpec.m

@@ -122,7 +122,7 @@
 		static NSString * const originalSHA = @"a4bca6b67a5483169963572ee3da563da33712f7";
 		static NSString * const updatedSHA = @"6b0c1c8b8816416089c534e474f4c692a76ac14f";
 		expect([masterBranch targetCommitAndReturnError:NULL].SHA).to(equal(originalSHA));
-		[masterBranch.reference referenceByUpdatingTarget:updatedSHA committer:nil message:nil error:NULL];
+		[masterBranch.reference referenceByUpdatingTarget:updatedSHA message:nil error:NULL];
 
 		GTBranch *reloadedBranch = [masterBranch reloadedBranchWithError:NULL];
 		expect(reloadedBranch).notTo(beNil());
@@ -158,7 +158,7 @@
 		GTOID *OID = [[GTOID alloc] initWithSHA:@"6b0c1c8b8816416089c534e474f4c692a76ac14f"];
 
 		NSError *error = nil;
-		GTReference *otherRef = [repository createReferenceNamed:@"refs/heads/yet-another-branch" fromOID:OID committer:nil message:nil error:&error];
+		GTReference *otherRef = [repository createReferenceNamed:@"refs/heads/yet-another-branch" fromOID:OID message:nil error:&error];
 		expect(otherRef).notTo(beNil());
 		expect(error).to(beNil());
 

ObjectiveGitTests/GTReferenceSpec.m

@@ -62,7 +62,7 @@
 		expect(repository).notTo(beNil());
 
 		NSError *error;
-		reference = [repository createReferenceNamed:testRefName fromOID:testRefOID committer:nil message:nil error:&error];
+		reference = [repository createReferenceNamed:testRefName fromOID:testRefOID message:nil error:&error];
 		expect(reference).notTo(beNil());
 		expect(reference.name).to(equal(testRefName));
 		expect(reference.targetSHA).to(equal(testRefOID.SHA));
@@ -80,7 +80,7 @@
 	it(@"should be able to change the target", ^{
 		NSString *newRefTarget = @"5b5b025afb0b4c913b4c338a42934a3863bf3644";
 
-		GTReference *updatedRef = [reference referenceByUpdatingTarget:newRefTarget committer:nil message:nil error:NULL];
+		GTReference *updatedRef = [reference referenceByUpdatingTarget:newRefTarget message:nil error:NULL];
 		expect(updatedRef).notTo(beNil());
 		expect(updatedRef.name).to(equal(testRefName));
 		expect(updatedRef.targetSHA).to(equal(newRefTarget));
@@ -154,7 +154,7 @@
 		expect(target).notTo(beNil());
 
 		NSError *error = nil;
-		GTReference *ref = [bareRepository createReferenceNamed:@"refs/heads/unit_test" fromReference:target committer:nil message:nil error:&error];
+		GTReference *ref = [bareRepository createReferenceNamed:@"refs/heads/unit_test" fromReference:target message:nil error:&error];
 		expect(error).to(beNil());
 		expect(ref).notTo(beNil());
 
@@ -166,7 +166,7 @@
 		GTOID *target = [[GTOID alloc] initWithSHA:@"36060c58702ed4c2a40832c51758d5344201d89a"];
 
 		NSError *error = nil;
-		GTReference *ref = [bareRepository createReferenceNamed:@"refs/heads/unit_test" fromOID:target committer:nil message:nil error:&error];
+		GTReference *ref = [bareRepository createReferenceNamed:@"refs/heads/unit_test" fromOID:target message:nil error:&error];
 		expect(error).to(beNil());
 		expect(ref).notTo(beNil());
 
@@ -179,7 +179,7 @@
 		GTOID *target = [[GTOID alloc] initWithSHA:@"36060c58702ed4c2a40832c51758d5344201d89a"];
 
 		NSError *error = nil;
-		GTReference *ref = [bareRepository createReferenceNamed:@"refs/heads/unit_test" fromOID:target committer:nil message:nil error:&error];
+		GTReference *ref = [bareRepository createReferenceNamed:@"refs/heads/unit_test" fromOID:target message:nil error:&error];
 
 		expect(error).to(beNil());
 		expect(ref).notTo(beNil());

ObjectiveGitTests/GTRemotePushSpec.m

@@ -186,7 +186,7 @@
 			GTBranch *branch1 = localBranchWithName(@"master", localRepo);
 
 			// Create refs/heads/new_master on local
-			[localRepo createReferenceNamed:@"refs/heads/new_master" fromReference:branch1.reference committer:localRepo.userSignatureForNow message:@"Create new_master branch" error:&error];
+			[localRepo createReferenceNamed:@"refs/heads/new_master" fromReference:branch1.reference message:@"Create new_master branch" error:&error];
 			GTBranch *branch2 = localBranchWithName(@"new_master", localRepo);
 
 			BOOL result = [localRepo pushBranches:@[ branch1, branch2 ] toRemote:remote withOptions:nil error:&error progress:NULL];

ObjectiveGitTests/GTRepositorySpec.m

@@ -276,7 +276,7 @@
 		NSString *branchName = @"new-test-branch";
 
 		NSError *error = nil;
-		GTBranch *newBranch = [repository createBranchNamed:branchName fromOID:[[GTOID alloc] initWithSHA:currentBranch.SHA] committer:nil message:nil error:&error];
+		GTBranch *newBranch = [repository createBranchNamed:branchName fromOID:[[GTOID alloc] initWithSHA:currentBranch.SHA] message:nil error:&error];
 		expect(newBranch).notTo(beNil());
 		expect(error).to(beNil());