Enable version vector

* Updated LiteCore to 7c777bf4df301746433445d785fc2de78b97af15.
* Enabled version vector.
* Updated default conflict resolution logic to use timestamp instead of generation. This would make the default logic to be last write wins instead of most frequent update wins.
* Disabled tests that uses the previous default conflict resolution logic.
* Fixed XCode 15 build issues

src/CBLDatabase_Internal.hh

@@ -298,7 +298,7 @@ private:
         }
         C4DatabaseConfig2 c4Config = {};
         c4Config.parentDirectory = effectiveDir(config->directory);
-        c4Config.flags = kC4DB_Create;
+        c4Config.flags = kC4DB_Create | kC4DB_VersionVectors;
 #ifdef COUCHBASE_ENTERPRISE
         c4Config.encryptionKey = asC4Key(&config->encryptionKey);
 #endif

src/CBLDocument_Internal.hh

@@ -88,6 +88,7 @@ public:
     slice docID() const                         {return _docID;}
     slice revisionID() const                    {return _revID;}
     unsigned generation() const                 {return C4Document::getRevIDGeneration(_revID);}
+    uint64_t timestamp() const                  {return C4Document::getRevIDTimestamp(_revID);}
 
     uint64_t sequence() const {
         auto c4doc = _c4doc.useLocked();

src/ConflictResolver.cc

@@ -36,9 +36,9 @@ static const CBLDocument* defaultConflictResolver(void *context,
     const CBLDocument* resolved;
     if (remoteDoc == nullptr || localDoc == nullptr)
         resolved = nullptr;
-    else if (remoteDoc->generation() > localDoc->generation())
+    else if (remoteDoc->timestamp() > localDoc->timestamp())
         resolved = remoteDoc;
-    else if (localDoc->generation() > remoteDoc->generation())
+    else if (localDoc->timestamp() > remoteDoc->timestamp())
         resolved = localDoc;
     else if (FLSlice_Compare(localDoc->revisionID(), remoteDoc->revisionID()) > 0)
         resolved = localDoc;

test/DocumentTest.cc

@@ -343,7 +343,9 @@ TEST_CASE_METHOD(DocumentTest, "Save Empty Document", "[Document]") {
 
     doc = CBLCollection_GetMutableDocument(col, "foo"_sl, &error);
     CHECK(CBLDocument_ID(doc) == "foo"_sl);
-    CHECK(CBLDocument_RevisionID(doc) == "1-581ad726ee407c8376fc94aad966051d013893c4"_sl);
+
+    auto str = slice(CBLDocument_RevisionID(doc)).asString();
+    CHECK(CBLDocument_RevisionID(doc).buf);
     CHECK(CBLDocument_Sequence(doc) == 1);
     CHECK(alloc_slice(CBLDocument_CreateJSON(doc)) == "{}"_sl);
     CBLDocument_Release(doc);

test/LogTest.cc

@@ -260,7 +260,7 @@ TEST_CASE_METHOD(LogTest, "File Logging : Set Log Level", "[Log][FileLog]") {
     }
 
     // Verify:
-    int lineCount = 1; // Header:
+    int lineCount = 2; // Header (2 lines):
     for (CBLLogLevel level : kLogLevels) {
         if (level == kCBLLogNone)
             continue;

test/QueryTest.cc

@@ -528,7 +528,6 @@ TEST_CASE_METHOD(QueryTest, "Query Listener", "[Query][LiveQuery]") {
     // Remove listener token and sleep to ensure async cleanup in LiteCore's LiveQuerier's _stop()
     // functions is done before checking instance leaking in CBLTest's destructor:
     CBLListener_Remove(listenerToken);
-    listenerToken = nullptr;
     cerr << "Sleeping to ensure async cleanup ..." << endl;
     this_thread::sleep_for(500ms);
 }
@@ -566,7 +565,6 @@ TEST_CASE_METHOD(QueryTest, "Remove Query Listener", "[Query][LiveQuery]") {
     CHECK(state.resultCount() == 3);
 
     // Cleanup:
-    listenerToken = nullptr;
     cerr << "Sleeping to ensure async cleanup ..." << endl;
     this_thread::sleep_for(500ms);
 }
@@ -604,7 +602,6 @@ TEST_CASE_METHOD(QueryTest, "Query Listener and Changing parameters", "[Query][L
     CHECK(state.resultCount() == 2);
 
     CBLListener_Remove(listenerToken);
-    listenerToken = nullptr;
     cerr << "Sleeping to ensure async cleanup ..." << endl;
     this_thread::sleep_for(500ms);
 }
@@ -666,10 +663,6 @@ TEST_CASE_METHOD(QueryTest, "Multiple Query Listeners", "[Query][LiveQuery]") {
     CBLListener_Remove(token2);
     CBLListener_Remove(token3);
 
-    token1 = nullptr;
-    token2 = nullptr;
-    token3 = nullptr;
-
     cerr << "Sleeping to ensure async cleanup ..." << endl;
     this_thread::sleep_for(500ms);
 }
@@ -706,7 +699,6 @@ TEST_CASE_METHOD(QueryTest, "Query Listener and Coalescing notification", "[Quer
     // Remove listener token and sleep to ensure async cleanup in LiteCore's LiveQuerier's _stop()
     // functions is done before checking instance leaking in CBLTest's destructor:
     CBLListener_Remove(listenerToken);
-    listenerToken = nullptr;
     cerr << "Sleeping to ensure async cleanup ..." << endl;
     this_thread::sleep_for(500ms);
 }

test/ReplicatorCollectionTest.cc

@@ -448,7 +448,7 @@ TEST_CASE_METHOD(ReplicatorCollectionTest, "Document Replication Event", "[Repli
     CHECK(replicatedDocs[bar2].error.code == 0);
 }
 
-TEST_CASE_METHOD(ReplicatorCollectionTest, "Default Conflict Resolver with Collections", "[Replicator]") {
+TEST_CASE_METHOD(ReplicatorCollectionTest, "Default Conflict Resolver with Collections", "[.failed-version-vector][Replicator]") {
     createDocWithJSON(cx[0], "foo1", kDefaultDocContent);
     createDocWithJSON(cx[1], "bar1", kDefaultDocContent);
 

test/ReplicatorEETest.cc

@@ -212,7 +212,7 @@ TEST_CASE_METHOD(ReplicatorLocalTest, "Default Resolver : Deleted Wins", "[Repli
 }
 
 
-TEST_CASE_METHOD(ReplicatorLocalTest, "Default Resolver : Higher Gen Wins", "[Replicator][Conflict]") {
+TEST_CASE_METHOD(ReplicatorLocalTest, "Default Resolver : Higher Gen Wins", "[.failed-version-vector][Replicator][Conflict]") {
     SECTION("No conflict resolved specified") {
         config.conflictResolver = nullptr;
     }
@@ -264,7 +264,7 @@ TEST_CASE_METHOD(ReplicatorLocalTest, "Default Resolver : Higher Gen Wins", "[Re
 }
 
 
-TEST_CASE_METHOD(ReplicatorLocalTest, "Default Resolver : Higher RevID Wins", "[Replicator][Conflict]") {
+TEST_CASE_METHOD(ReplicatorLocalTest, "Default Resolver : Higher RevID Wins", "[.failed-version-vector][Replicator][Conflict]") {
     SECTION("No conflict resolved specified") {
         config.conflictResolver = nullptr;
     }