diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index 39c328b..1368738 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -31,7 +31,7 @@ jobs:
           mongodb-version: ${{ matrix.mongodb-version }}
 
       - name: Run tests
-        run: go test -v -covermode=count -coverprofile=coverage.out
+        run: go test `go list ./... | grep -v ./cmd` -v -covermode=count -coverprofile=coverage.out
 
       - name: Convert coverage.out to coverage.lcov
         uses: jandelgado/gcov2lcov-action@v1
diff --git a/collection.go b/collection.go
index 81c6f6e..fd8222c 100644
--- a/collection.go
+++ b/collection.go
@@ -8,6 +8,7 @@ import (
 	"go.mongodb.org/mongo-driver/mongo/options"
 )
 
+
 type Collection[T Document] struct {
 	collection *mongo.Collection
 }
@@ -95,6 +96,24 @@ func (repo *Collection[T]) CountDocuments(filter interface{}) (int64, error) {
 	return count, err
 }
 
+func (repo *Collection[T]) Aggregate(pipeline mongo.Pipeline, opts ...*options.AggregateOptions) ([]bson.M, error) {
+	csr, err := repo.collection.Aggregate(DefaultContext(), pipeline, opts...)
+
+	var result = []bson.M{}
+	if err = csr.All(DefaultContext(), &result); err != nil {
+		return nil, err
+	}
+
+	return result, nil
+}
+
+func (repo *Collection[T]) Drop() error {
+	err := repo.collection.Drop(DefaultContext())
+	return err
+}
+
+
 func (repo *Collection[T]) NewId() primitive.ObjectID {
 	return primitive.NewObjectID()
 }
+
diff --git a/collection_test.go b/collection_test.go
index 1a0d742..bdb57c6 100644
--- a/collection_test.go
+++ b/collection_test.go
@@ -5,6 +5,7 @@ import (
 	"github.com/stretchr/testify/assert"
 	"go.mongodb.org/mongo-driver/bson"
 	"go.mongodb.org/mongo-driver/bson/primitive"
+	"go.mongodb.org/mongo-driver/mongo"
 	"math/rand"
 	"strings"
 	"testing"
@@ -231,8 +232,27 @@ func TestCollection_UpdateMany(t *testing.T) {
 
 // TODO
 func TestCollection_DeleteById(t *testing.T) {
+	rand.Seed(time.Now().UnixNano())
+	mockDb.Connect("mongodb://localhost:27017/colt?readPreference=primary&directConnection=true&ssl=false", "colt")
+
+	collection := GetCollection[*testdoc](&mockDb, "testdocs")
+
+	title := fmt.Sprint(rand.Int())
+	doc := testdoc{Title: title}
+
+	collection.Insert(&doc)
+	err := collection.DeleteById(doc.ID)
+	assert.Nil(t, err)
 
+	result, err := collection.FindById(doc.ID)
+	assert.Nil(t, result)
+	assert.NotNil(t, err)
+
+	collection.Drop()
+	mockDb.Disconnect()
 }
+
+
 func TestCollection_CountDocuments(t *testing.T) {
 	rand.Seed(time.Now().UnixNano())
 	mockDb.Connect("mongodb://localhost:27017/colt?readPreference=primary&directConnection=true&ssl=false", "colt")
@@ -260,3 +280,34 @@ func TestCollection_CountDocuments(t *testing.T) {
 
 	mockDb.Disconnect()
 }
+
+
+
+func TestCollection_Aggregate(t *testing.T) {
+	rand.Seed(time.Now().UnixNano())
+	mockDb.Connect("mongodb://localhost:27017/colt?readPreference=primary&directConnection=true&ssl=false", "colt")
+
+	collection := GetCollection[*testdoc](&mockDb, "aggregatetest")
+
+	title := fmt.Sprint(rand.Int())
+	doc := testdoc{Title: title}
+	doc2 := testdoc{Title: title}
+
+	collection.Insert(&doc)
+	collection.Insert(&doc2)
+
+	result, err := collection.Aggregate(mongo.Pipeline{
+		bson.D{
+			{"$group", bson.D{
+				{"_id", "$title"},
+				{"count", bson.D{{"$sum", 1}}},
+			}}}})
+
+	assert.Nil(t, err)
+	assert.NotNil(t, result)
+	assert.Equal(t, result[0]["_id"], title)
+	assert.Equal(t, result[0]["count"], int32(2))
+
+	collection.Drop()
+	mockDb.Disconnect()
+}