diff --git a/web/pgadmin/browser/server_groups/servers/databases/extensions/tests/default/alter_extension_schema.sql b/web/pgadmin/browser/server_groups/servers/databases/extensions/tests/default/alter_extension_schema.sql
new file mode 100644
index 0000000..28fb182
--- /dev/null
+++ b/web/pgadmin/browser/server_groups/servers/databases/extensions/tests/default/alter_extension_schema.sql
@@ -0,0 +1,7 @@
+-- Extension: timetravel
+
+-- DROP EXTENSION timetravel;
+
+CREATE EXTENSION timetravel
+    SCHEMA test_extension_schema
+    VERSION "1.0";
diff --git a/web/pgadmin/browser/server_groups/servers/databases/extensions/tests/default/alter_extension_version.sql b/web/pgadmin/browser/server_groups/servers/databases/extensions/tests/default/alter_extension_version.sql
new file mode 100644
index 0000000..6d193fb
--- /dev/null
+++ b/web/pgadmin/browser/server_groups/servers/databases/extensions/tests/default/alter_extension_version.sql
@@ -0,0 +1,7 @@
+-- Extension: adminpack
+
+-- DROP EXTENSION adminpack;
+
+CREATE EXTENSION adminpack
+    SCHEMA pg_catalog
+    VERSION "1.1";
diff --git a/web/pgadmin/browser/server_groups/servers/databases/extensions/tests/default/create_extension_with_all_options.sql b/web/pgadmin/browser/server_groups/servers/databases/extensions/tests/default/create_extension_with_all_options.sql
new file mode 100644
index 0000000..0617532
--- /dev/null
+++ b/web/pgadmin/browser/server_groups/servers/databases/extensions/tests/default/create_extension_with_all_options.sql
@@ -0,0 +1,7 @@
+-- Extension: timetravel
+
+-- DROP EXTENSION timetravel;
+
+CREATE EXTENSION timetravel
+    SCHEMA public
+    VERSION "1.0";
diff --git a/web/pgadmin/browser/server_groups/servers/databases/extensions/tests/default/create_extension_with_default_schema.sql b/web/pgadmin/browser/server_groups/servers/databases/extensions/tests/default/create_extension_with_default_schema.sql
new file mode 100644
index 0000000..a9a61d4
--- /dev/null
+++ b/web/pgadmin/browser/server_groups/servers/databases/extensions/tests/default/create_extension_with_default_schema.sql
@@ -0,0 +1,7 @@
+-- Extension: adminpack
+
+-- DROP EXTENSION adminpack;
+
+CREATE EXTENSION adminpack
+    SCHEMA pg_catalog
+    VERSION "1.0";
diff --git a/web/pgadmin/browser/server_groups/servers/databases/extensions/tests/default/tests.json b/web/pgadmin/browser/server_groups/servers/databases/extensions/tests/default/tests.json
new file mode 100644
index 0000000..fff75f8
--- /dev/null
+++ b/web/pgadmin/browser/server_groups/servers/databases/extensions/tests/default/tests.json
@@ -0,0 +1,59 @@
+{
+  "scenarios": [
+    {
+      "type": "create",
+      "name": "Create Extension with all options",
+      "endpoint": "NODE-extension.obj",
+      "sql_endpoint": "NODE-extension.sql_id",
+      "data": {
+        "name": "timetravel",
+        "schema": "public",
+        "version": "1.0"
+      },
+      "expected_sql_file": "create_extension_with_all_options.sql"
+    },
+    {
+      "type": "alter",
+      "name": "Alter Extension version",
+      "endpoint": "NODE-extension.obj_id",
+      "sql_endpoint": "NODE-extension.sql_id",
+      "data": {
+        "schema": "test_extension_schema"
+      },
+      "expected_sql_file": "alter_extension_schema.sql"
+    },
+    {
+      "type": "delete",
+      "name": "Drop Extension with all options",
+      "endpoint": "NODE-extension.obj_id",
+      "data": {}
+    },
+    {
+      "type": "create",
+      "name": "Create Extension with default(pg_catalog) schema",
+      "endpoint": "NODE-extension.obj",
+      "sql_endpoint": "NODE-extension.sql_id",
+      "data": {
+        "name": "adminpack",
+        "version": "1.0"
+      },
+      "expected_sql_file": "create_extension_with_default_schema.sql"
+    },
+    {
+      "type": "alter",
+      "name": "Alter Extension version",
+      "endpoint": "NODE-extension.obj_id",
+      "sql_endpoint": "NODE-extension.sql_id",
+      "data": {
+        "version": "1.1"
+      },
+      "expected_sql_file": "alter_extension_version.sql"
+    },
+    {
+      "type": "delete",
+      "name": "Drop Extension default(pg_catalog) schema",
+      "endpoint": "NODE-extension.obj_id",
+      "data": {}
+    }
+  ]
+}