diff --git a/.gitmodules b/.gitmodules
index 210b35240..a183fc28f 100644
--- a/.gitmodules
+++ b/.gitmodules
@@ -2,3 +2,7 @@
 	path = tests/mongo-go-driver
 	url = https://github.com/mongodb/mongo-go-driver.git
 	branch = master
+[submodule "mongoose"]
+	path = tests/mongoose
+	url = https://github.com/Automattic/mongoose.git
+	branch = master
diff --git a/tests/.mocharc.json b/tests/.mocharc.json
new file mode 100644
index 000000000..bfbd9b3ed
--- /dev/null
+++ b/tests/.mocharc.json
@@ -0,0 +1,3 @@
+{
+    "reporter": "json-stream"
+}
diff --git a/tests/ferret.yml b/tests/ferret.yml
index f003f1e50..580ad5da3 100644
--- a/tests/ferret.yml
+++ b/tests/ferret.yml
@@ -5,7 +5,7 @@ results:
   common:
     stats:
       expected_skip: 1
-      expected_pass: 27
+      expected_pass: 30
 
     skip:
       - github.com/FerretDB/dance/tests/ferret/TestCore/InsertMany # https://github.com/FerretDB/FerretDB/issues/200
diff --git a/tests/ferret/core_test.go b/tests/ferret/core_test.go
index 6852ca7dc..0f3d52375 100644
--- a/tests/ferret/core_test.go
+++ b/tests/ferret/core_test.go
@@ -102,6 +102,23 @@ func TestCore(t *testing.T) {
 
 			"array":       primitive.A{"array", int32(42)},
 			"array-empty": primitive.A{},
+			"array-embedded": primitive.A{
+				primitive.D{
+					primitive.E{Key: "score", Value: 42.13},
+					primitive.E{Key: "age", Value: int32(1000)},
+					primitive.E{Key: "document", Value: "abc"},
+				},
+				primitive.D{
+					primitive.E{Key: "document", Value: "def"},
+					primitive.E{Key: "score", Value: 42.13},
+					primitive.E{Key: "age", Value: int32(1000)},
+				},
+				primitive.D{
+					primitive.E{Key: "score", Value: int32(24)},
+					primitive.E{Key: "age", Value: int32(1002)},
+					primitive.E{Key: "document", Value: "jkl"},
+				},
+			},
 
 			"binary":       primitive.Binary{Subtype: 0x80, Data: []byte{42, 0, 13}},
 			"binary-empty": primitive.Binary{},
@@ -217,6 +234,36 @@ func TestCore(t *testing.T) {
 			// documents
 			// TODO
 
+			// $elemMatch
+			{
+				name: "elemMatchGtScalar",
+				q: bson.D{{"value", bson.M{
+					"$elemMatch": bson.M{
+						"age":   bson.D{{"$gt", int32(999)}},
+						"score": int32(24),
+					},
+				}}},
+				IDs: []string{"array-embedded"},
+			},
+			{
+				name: "elemMatchLtScalarEmpty",
+				q: bson.D{{"value", bson.M{
+					"$elemMatch": bson.M{
+						"age":   bson.D{{"$lt", int32(999)}},
+						"score": int32(24),
+					},
+				}}},
+				IDs: []string{},
+			},
+			{
+				name: "elemMatchScalar",
+				q: bson.D{{"value", bson.M{
+					"$elemMatch": bson.M{
+						"score": int32(24),
+					},
+				}}},
+				IDs: []string{"array-embedded"},
+			},
 			// arrays
 			// $size
 			{
diff --git a/tests/mongoose b/tests/mongoose
new file mode 160000
index 000000000..3c7ae7a37
--- /dev/null
+++ b/tests/mongoose
@@ -0,0 +1 @@
+Subproject commit 3c7ae7a37aa5f663f080e624d2074f636d709f81