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<h1 id="end-to-end-tests">End-to-End Tests</h1>
<p>CloudNativePG operator is automatically tested after each
commit via a suite of <strong>End-to-end (E2E) tests</strong>. It ensures that
the operator correctly deploys and manages the PostgreSQL clusters.</p>
<p>Moreover, the following Kubernetes versions are tested for each commit,
ensuring failure and bugs detection at an early stage of the development
process:</p>
<ul>
<li>1.24</li>
<li>1.23</li>
<li>1.22</li>
<li>1.21</li>
<li>1.20</li>
<li>1.19</li>
</ul>
<p>The following PostgreSQL versions are tested:</p>
<ul>
<li>PostgreSQL 15 beta (<strong>not for production!!!</strong>)</li>
<li>PostgreSQL 14</li>
<li>PostgreSQL 13</li>
<li>PostgreSQL 12</li>
<li>PostgreSQL 11</li>
<li>PostgreSQL 10</li>
</ul>
<p>For each tested version of Kubernetes and PostgreSQL, a Kubernetes
cluster is created using <a href="https://kind.sigs.k8s.io/">kind</a>,
and the following suite of E2E tests are performed on that cluster:</p>
<ul>
<li>Installation of the operator;</li>
<li>Creation of a <code>Cluster</code>;</li>
<li>Usage of a persistent volume for data storage;</li>
<li>Connection via services, including read-only;</li>
<li>Connection via user-provided server and/or client certificates;</li>
<li>Scale-up and scale-down of a <code>Cluster</code>;</li>
<li>Failover;</li>
<li>Switchover;</li>
<li>Manage PostgreSQL configuration changes;</li>
<li>Rolling updates when changing PostgreSQL images;</li>
<li>Backup and ScheduledBackups execution;</li>
<li>Backup and ScheduledBackups execution using Barman Cloud on Azure blob storage;</li>
<li>Synchronous replication;</li>
<li>Restore from backup;</li>
<li>Restore from backup using Barman Cloud on Azure blob storage;</li>
<li>Pod affinity using <code>NodeSelector</code>;</li>
<li>Metrics collection;</li>
<li>JSON log format;</li>
<li>Operator configuration via ConfigMap;</li>
<li>Operator pod deletion;</li>
<li>Operator pod eviction;</li>
<li>Operator upgrade;</li>
<li>Operator High Availability;</li>
<li>Node drain;</li>
<li>Primary endpoint switch in case of failover in less than 10 seconds;</li>
<li>Primary endpoint switch in case of switchover in less than 20 seconds;</li>
<li>Recover from a degraded state in less than 60 seconds;</li>
<li>Physical replica clusters;</li>
<li>Storage expansion;</li>
<li>Data corruption;</li>
</ul>
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