fix: postgres implementation

Patches a regression with our Kong addon Postgres
that came around due to a typo in helm values.
Adds integration tests for it so we're less likely
to run into that again.

pkg/clusters/addons/kong/kong.go

@@ -114,10 +114,10 @@ func (a *Addon) Deploy(ctx context.Context, cluster clusters.Cluster) error {
 	if a.dbmode == PostgreSQL {
 		a.deployArgs = append(a.deployArgs,
 			"--set", "env.database=postgres",
-			"--set", "PostgreSQL.enabled=true",
-			"--set", "PostgreSQL.PostgreSQLUsername=kong",
-			"--set", "PostgreSQL.PostgreSQLDatabase=kong",
-			"--set", "PostgreSQL.service.port=5432",
+			"--set", "postgresql.enabled=true",
+			"--set", "postgresql.postgresqlUsername=kong",
+			"--set", "postgresql.postgresqlDatabase=kong",
+			"--set", "postgresql.service.port=5432",
 		)
 	}
 
@@ -171,7 +171,7 @@ func (a *Addon) Ready(ctx context.Context, cluster clusters.Cluster) (waitForObj
 	}
 
 	for _, service := range services.Items {
-		if len(service.Status.LoadBalancer.Ingress) < 1 {
+		if service.Spec.Type == corev1.ServiceTypeLoadBalancer && len(service.Status.LoadBalancer.Ingress) < 1 {
 			waitForObjects = append(waitForObjects, &service)
 		}
 	}

test/integration/kind_cluster_test.go

@@ -16,7 +16,7 @@ import (
 	"github.com/kong/kubernetes-testing-framework/pkg/utils/kubernetes/generators"
 )
 
-func TestEnvironmentWithKindCluster(t *testing.T) {
+func TestEnvWithKindCluster(t *testing.T) {
 	ctx, cancel := context.WithTimeout(context.Background(), time.Minute*10)
 	defer cancel()
 

test/integration/postgres_test.go

@@ -0,0 +1,55 @@
+//+build integration_tests
+
+package integration
+
+import (
+	"context"
+	"net/http"
+	"testing"
+	"time"
+
+	"github.com/stretchr/testify/require"
+
+	kongaddon "github.com/kong/kubernetes-testing-framework/pkg/clusters/addons/kong"
+	metallbaddon "github.com/kong/kubernetes-testing-framework/pkg/clusters/addons/metallb"
+	environment "github.com/kong/kubernetes-testing-framework/pkg/environments"
+)
+
+func TestKongWithPostgresDBMode(t *testing.T) {
+	ctx, cancel := context.WithTimeout(context.Background(), time.Minute*10)
+	defer cancel()
+
+	t.Log("configuring the testing environment")
+	metallb := metallbaddon.New()
+	kong := kongaddon.NewBuilder().WithPostgreSQL().Build()
+	builder := environment.NewBuilder().WithAddons(kong, metallb)
+
+	t.Log("building the testing environment and Kubernetes cluster")
+	env, err := builder.Build(ctx)
+	require.NoError(t, err)
+
+	t.Logf("setting up the environment cleanup for environment %s and cluster %s", env.Name(), env.Cluster().Name())
+	defer func() {
+		t.Logf("cleaning up environment %s and cluster %s", env.Name(), env.Cluster().Name())
+		require.NoError(t, env.Cleanup(ctx))
+	}()
+
+	t.Log("waiting for environment to be ready")
+	require.NoError(t, <-env.WaitForReady(ctx))
+
+	t.Logf("verifying that the kong proxy admin service %s gets provisioned an IP address by metallb", kongaddon.DefaultAdminServiceName)
+	adminURL, err := kong.ProxyAdminURL(ctx, env.Cluster())
+	require.NoError(t, err)
+	require.NotNil(t, adminURL)
+
+	t.Logf("found url %s for proxy admin, now verifying it is routable", adminURL)
+	httpc := http.Client{Timeout: time.Second * 3}
+	require.Eventually(t, func() bool {
+		resp, err := httpc.Get(adminURL.String())
+		if err != nil {
+			return false
+		}
+		defer resp.Body.Close()
+		return resp.StatusCode == http.StatusOK
+	}, time.Minute*1, time.Second*1)
+}