diff --git a/tests/helm/simple.nix b/tests/helm/simple.nix
index 2765e77..7070b0e 100644
--- a/tests/helm/simple.nix
+++ b/tests/helm/simple.nix
@@ -1,10 +1,33 @@
-{ config, test, kubenix, k8s, helm, ... }:
+{ config, lib, test, pkgs, kubenix, k8s, helm, ... }:
 
+with lib;
 with k8s;
+with pkgs.dockerTools;
 
 let
   corev1 = config.kubernetes.api.core.v1;
   appsv1beta2 = config.kubernetes.api.apps.v1beta2;
+
+  postgresql = pullImage {
+    imageName = "docker.io/bitnami/postgresql";
+    imageDigest = "sha256:16485a9b19696958ab7259e0d2c3efa0ef7f300b6fd1beb13a6643e120970a05";
+    sha256 = "0hqdkpk7s3wcy5qsy6dzgzqc0rbpavpghly350p97j1janxbyhc7";
+    finalImageTag = "10.7.0";
+  };
+
+  postgresqlExporter = pullImage {
+    imageName = "docker.io/wrouesnel/postgres_exporter";
+    imageDigest = "sha256:dd8051322ceb8995d3d7f116041a2116815e01e88232a90f635ebde8dcc4d3f4";
+    sha256 = "09mva5jx1g4v47s4lr1pkpfzzmxc7z9dnajfizffm3rxwl0qzjji";
+    finalImageTag = "v0.4.7";
+  };
+
+  minideb = pullImage {
+    imageName = "docker.io/bitnami/minideb";
+    imageDigest = "sha256:363011b4ad5308e7f2aee505b80730cbaadf9d41ff87879403f567dd98cfb5cf";
+    sha256 = "1vfyfdhmgidi7hc8kjflpq91vkzdqi9sj78g51ci8nyarclr808q";
+    finalImageTag = "latest";
+  };
 in {
   imports = [
     kubenix.helm
@@ -27,14 +50,21 @@ in {
     } {
       message = "should have namespace defined";
       assertion =
-        appsv1beta2.StatefulSet.app-psql-postgresql-master.metadata.namespace == "test-namespace";
+        appsv1beta2.StatefulSet.app-psql-postgresql-master.metadata.namespace == "test";
     }];
+    testScript = ''
+      $kube->waitUntilSucceeds("docker load < ${postgresql}");
+      $kube->waitUntilSucceeds("docker load < ${postgresqlExporter}");
+      $kube->waitUntilSucceeds("docker load < ${minideb}");
+      $kube->waitUntilSucceeds("kubectl apply -f ${toYAML config.kubernetes.generated}");
+      $kube->waitUntilSucceeds("PGPASSWORD=postgres ${pkgs.postgresql}/bin/psql -h app-psql-postgresql.test.svc.cluster.local -U postgres -l");
+    '';
   };
 
-  kubernetes.api.namespaces.test-namespace = {};
+  kubernetes.api.namespaces.test = {};
 
   kubernetes.helm.instances.app-psql = {
-    namespace = "test-namespace";
+    namespace = "test";
     chart = helm.fetch {
       chart = "stable/postgresql";
       version = "3.0.0";
@@ -42,8 +72,25 @@ in {
     };
 
     values = {
+      image = {
+        repository = "bitnami/postgresql";
+        tag = "10.7.0";
+        pullPolicy = "IfNotPresent";
+      };
+      volumePermissions.image = {
+        repository = "bitnami/minideb";
+        tag = "latest";
+        pullPolicy = "IfNotPresent";
+      };
+      metrics.image = {
+        repository = "wrouesnel/postgres_exporter";
+        tag = "v0.4.7";
+        pullPolicy = "IfNotPresent";
+      };
       replication.enabled = true;
       replication.slaveReplicas = 2;
+      postgresqlPassword = "postgres";
+      persistence.enabled = false;
     };
   };
 }