Postgresql database testing.

database_test.go

	ExpectedStatus := "success"
	status := retry.DoWithRetry(t, "Waiting for DB connection validation...", 5, time.Duration(time.Second*5),
		func() (string, error) {
			output, err := k8s.RunKubectlAndGetOutputE(t, kubernetesOptions, "exec", psqlClientPodName, "--", "/bin/sh", "-c", fmt.Sprintf("PGPASSWORD=\"%s\" psql \"sslmode=require host=%s.postgres.database.azure.com dbname=%s user=%s@%s\";echo $?;", config.PGPassword, config.HostName, config.DBName, config.UserName, config.HostName))
			if err != nil {
				return "", err
			}

			t.Log("PostgresClient:", output)
			if output == "0" {
				return ExpectedStatus, nil
			} else {
				return "", fmt.Errorf("fail")
			}
		})
	assert.Equal(t, ExpectedStatus, status)