1 files changed, 76 insertions, 0 deletions
diff --git a/nixpkgs/nixos/tests/pgvecto-rs.nix b/nixpkgs/nixos/tests/pgvecto-rs.nix
new file mode 100644
index 000000000000..cd871dab6a0f
--- /dev/null
+++ b/nixpkgs/nixos/tests/pgvecto-rs.nix
@@ -0,0 +1,76 @@
+# mostly copied from ./timescaledb.nix which was copied from ./postgresql.nix
+# as it seemed unapproriate to test additional extensions for postgresql there.
+
+{ system ? builtins.currentSystem
+, config ? { }
+, pkgs ? import ../.. { inherit system config; }
+}:
+
+with import ../lib/testing-python.nix { inherit system pkgs; };
+with pkgs.lib;
+
+let
+  postgresql-versions = import ../../pkgs/servers/sql/postgresql pkgs;
+  # Test cases from https://docs.pgvecto.rs/use-cases/hybrid-search.html
+  test-sql = pkgs.writeText "postgresql-test" ''
+    CREATE EXTENSION vectors;
+
+    CREATE TABLE items (
+      id bigserial PRIMARY KEY,
+      content text NOT NULL,
+      embedding vectors.vector(3) NOT NULL -- 3 dimensions
+    );
+
+    INSERT INTO items (content, embedding) VALUES
+      ('a fat cat sat on a mat and ate a fat rat', '[1, 2, 3]'),
+      ('a fat dog sat on a mat and ate a fat rat', '[4, 5, 6]'),
+      ('a thin cat sat on a mat and ate a thin rat', '[7, 8, 9]'),
+      ('a thin dog sat on a mat and ate a thin rat', '[10, 11, 12]');
+  '';
+  make-postgresql-test = postgresql-name: postgresql-package: makeTest {
+    name = postgresql-name;
+    meta = with pkgs.lib.maintainers; {
+      maintainers = [ diogotcorreia ];
+    };
+
+    nodes.machine = { ... }:
+      {
+        services.postgresql = {
+          enable = true;
+          package = postgresql-package;
+          extraPlugins = ps: with ps; [
+            pgvecto-rs
+          ];
+          settings.shared_preload_libraries = "vectors";
+        };
+      };
+
+    testScript = ''
+      def check_count(statement, lines):
+          return 'test $(sudo -u postgres psql postgres -tAc "{}"|wc -l) -eq {}'.format(
+              statement, lines
+          )
+
+
+      machine.start()
+      machine.wait_for_unit("postgresql")
+
+      with subtest("Postgresql with extension vectors is available just after unit start"):
+          machine.succeed(check_count("SELECT * FROM pg_available_extensions WHERE name = 'vectors' AND default_version = '${postgresql-package.pkgs.pgvecto-rs.version}';", 1))
+
+      machine.succeed("sudo -u postgres psql -f ${test-sql}")
+
+      machine.succeed(check_count("SELECT content, embedding FROM items WHERE to_tsvector('english', content) @@ 'cat & rat'::tsquery;", 2))
+
+      machine.shutdown()
+    '';
+
+  };
+  applicablePostgresqlVersions = filterAttrs (_: value: versionAtLeast value.version "12") postgresql-versions;
+in
+mapAttrs'
+  (name: package: {
+    inherit name;
+    value = make-postgresql-test name package;
+  })
+  applicablePostgresqlVersions