Add UpdateSet, Relaxed in client, Fix tests

find.go

@@ -37,7 +37,11 @@ func (c *MongoClient) Find(ctx context.Context, database, name string, filter bs
 		return nil, err
 	}
 
-	pipeline := BuildPaginationPipeline(0, pageSize + 1, filter, sort)
+	f := Mongofy(&Query{
+		Filter: filter,
+	})
+
+	pipeline := BuildPaginationPipeline(0, pageSize + 1, f, sort)
 
 	// 2. Query
 	cursor, err := collection.Aggregate(ctx, pipeline)
@@ -114,6 +118,10 @@ func (c *MongoClient) FindOffset(ctx context.Context, database, name string, fil
 		limit = opts.Limit
 	}
 
+	if opts != nil {
+		offset = opts.Offset
+	}
+
 	// 1. Prepare to query.
 	finalName := name
 	if opts != nil && commons.StringIsNotBlank(opts.Alias) {
@@ -130,7 +138,7 @@ func (c *MongoClient) FindOffset(ctx context.Context, database, name string, fil
 	f := Mongofy(&Query{
 		Filter: filter,
 	})
-	
+
 	pipeline := BuildPaginationPipeline(offset, finalLimit, f, nil)
 
 	// 2. Query
@@ -175,9 +183,13 @@ func (c *MongoClient) FindOffset(ctx context.Context, database, name string, fil
 	}
 
 	hasMore := false
-	if int64(len(data)) > finalLimit {
+	if total > offset + finalLimit {
 		hasMore = true
-		data = data[:finalLimit]
+	}
+
+	hasPrevious := false
+	if finalLimit - offset < 0 {
+		hasPrevious = true
 	}
 
 	out := bson.M{
@@ -185,6 +197,7 @@ func (c *MongoClient) FindOffset(ctx context.Context, database, name string, fil
 		"offset": offset,
 		"limit": finalLimit,
 		"has_more": hasMore,
+		"has_previous": hasPrevious,
 		"total": total,
 	}