cargo-pgx/timescaledb_toolkit: add nixos test

nixos/tests/all-tests.nix

@@ -683,6 +683,7 @@ in {
   terminal-emulators = handleTest ./terminal-emulators.nix {};
   tiddlywiki = handleTest ./tiddlywiki.nix {};
   tigervnc = handleTest ./tigervnc.nix {};
+  timescaledb = handleTest ./timescaledb.nix {};
   timezone = handleTest ./timezone.nix {};
   tinc = handleTest ./tinc {};
   tinydns = handleTest ./tinydns.nix {};

nixos/tests/timescaledb.nix

@@ -0,0 +1,93 @@
+# mostly 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-sql = pkgs.writeText "postgresql-test" ''
+    CREATE EXTENSION timescaledb;
+    CREATE EXTENSION timescaledb_toolkit;
+
+    CREATE TABLE sth (
+      time TIMESTAMPTZ NOT NULL,
+      value DOUBLE PRECISION
+    );
+
+    SELECT create_hypertable('sth', 'time');
+
+    INSERT INTO sth (time, value) VALUES
+    ('2003-04-12 04:05:06 America/New_York', 1.0),
+    ('2003-04-12 04:05:07 America/New_York', 2.0),
+    ('2003-04-12 04:05:08 America/New_York', 3.0),
+    ('2003-04-12 04:05:09 America/New_York', 4.0),
+    ('2003-04-12 04:05:10 America/New_York', 5.0)
+    ;
+
+    WITH t AS (
+      SELECT
+        time_bucket('1 day'::interval, time) AS dt,
+        stats_agg(value) AS stats
+      FROM sth
+      GROUP BY time_bucket('1 day'::interval, time)
+    )
+    SELECT
+      average(stats)
+    FROM t;
+  '';
+  make-postgresql-test = postgresql-name: postgresql-package: makeTest {
+    name = postgresql-name;
+    meta = with pkgs.lib.maintainers; {
+      maintainers = [ typetetris ];
+    };
+
+    nodes.machine = { ... }:
+      {
+        services.postgresql = {
+          enable = true;
+          package = postgresql-package;
+          extraPlugins = with postgresql-package.pkgs; [
+            timescaledb
+            timescaledb_toolkit
+          ];
+          settings = { shared_preload_libraries = "timescaledb, timescaledb_toolkit"; };
+        };
+      };
+
+    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 extensions timescaledb and timescaledb_toolkit is available just after unit start"):
+          machine.succeed(
+              "sudo -u postgres psql -f ${test-sql}"
+          )
+
+      machine.fail(check_count("SELECT * FROM sth;", 3))
+      machine.succeed(check_count("SELECT * FROM sth;", 5))
+      machine.fail(check_count("SELECT * FROM sth;", 4))
+
+      machine.shutdown()
+    '';
+
+  };
+  applicablePostgresqlVersions = filterAttrs (_: value: versionAtLeast value.version "12") postgresql-versions;
+in
+mapAttrs'
+  (name: package: {
+    inherit name;
+    value = make-postgresql-test name package;
+  })
+  applicablePostgresqlVersions

pkgs/servers/sql/postgresql/ext/timescaledb_toolkit.nix

@@ -3,6 +3,7 @@
 , buildPgxExtension
 , postgresql
 , stdenv
+, nixosTests
 }:
 
 buildPgxExtension rec {
@@ -21,6 +22,10 @@ buildPgxExtension rec {
   cargoSha256 = "sha256-ukjJ11LmfG+k8D20rj68i43gOWUN80nf3hIAjUWXihI=";
   buildAndTestSubdir = "extension";
 
+  passthru.tests = {
+    timescaledb_toolkit = nixosTests.timescaledb;
+  };
+
   # tests take really long
   doCheck = false;