Abstract

Documentation of the unit tests for this repository.

PostgreSQL Unit Tests

Tests Usage

To run these tests you need to install the unittest plugin.

1. Install the plugin.

   helm plugin install https://github.com/helm-unittest/helm-unittest
   

2. Run the tests.

   helm unittest -f 'tests/*.yaml' .
   

Service Test

suite

PostgreSQL Service Test Suite

---

Tests for the Service template.

tests/service_test_suite.yaml

suite: PostgreSQL Service Test Suite
release:
  name: postgresql
templates:
- "templates/service.yaml"
values:
- ../values.yaml

tests:
- it: "should render Service with correct metadata"
  asserts:
  - isKind:
      of: Service
  - matchRegex:
      path: metadata.name
      pattern: "^postgresql.*$"
  - equal:
      path: metadata.labels
      value:
        app.kubernetes.io/component: database
        app.kubernetes.io/instance: postgresql
        app.kubernetes.io/managed-by: Helm
        app.kubernetes.io/name: postgresql
        app.kubernetes.io/version: "16.3"
        helm.sh/chart: postgresql-0.0.3

- it: "should render Service with correct spec configurations"
  asserts:
  - equal:
      path: spec.type
      value: "LoadBalancer"
  - equal:
      path: spec.ports[0].port
      value: 5432
  - equal:
      path: spec.ports[0].targetPort
      value: 5432
  - equal:
      path: spec.ports[0].protocol
      value: "TCP"
  - equal:
      path: spec.ports[0].name
      value: "postgresql"
  - equal:
      path: spec.selector
      value:
        app.kubernetes.io/component: database
        app.kubernetes.io/instance: postgresql
        app.kubernetes.io/name: postgresql

ServiceAccount Test

suite

ServiceAccount Test Suite

---

Tests for the PostgreSQL ServiceAccount.

tests/serviceaccount_test_suite.yaml

# :start-at: "suite: PostgreSQL ServiceAccount Test Suite"
# ```
suite: PostgreSQL ServiceAccount Test Suite
release:
  name: postgresql
templates:
- "templates/serviceaccount.yaml"
values:
- ../values.yaml

tests:
- it: "should render ServiceAccount with correct metadata"
  asserts:
  - isKind:
      of: ServiceAccount
  - equal:
      path: metadata.name
      value: postgresql
  - equal:
      path: metadata.labels
      value:
        app.kubernetes.io/component: database
        app.kubernetes.io/instance: postgresql
        app.kubernetes.io/name: postgresql
  - equal:
      path: metadata.annotations
      value:
        app.kubernetes.io/name: postgresql

- it: "should render ServiceAccount with correct spec configurations"
  asserts:
  - equal:
      path: automountServiceAccountToken
      value: true

StatefulSet Test

suite

StatefulSet Test

---

Tests the StatefulSet template values.

tests/statefulset_test.yaml

# :start-at: "suite: PostgreSQL StatefulSet Test Suite"
# ```
suite: PostgreSQL StatefulSet Test Suite
release:
  name: postgresql
templates:
- "templates/statefulset.yaml"
set:
  type: StatefulSet
values:
- ../values.yaml

tests:
- it: "should render StatefulSet with correct metadata"
  asserts:
  - isKind:
      of: StatefulSet
  - equal:
      path: metadata.name
      value: postgresql

- it: "should render StatefulSet with correct selector and serviceName"
  asserts:
  - equal:
      path: spec.serviceName
      value: postgresql
  - equal:
      path: spec.replicas
      value: 1
  - equal:
      path: spec.selector.matchLabels
      value:
        app.kubernetes.io/component: database
        app.kubernetes.io/instance: postgresql
        app.kubernetes.io/name: postgresql

- it: "should render StatefulSet with correct pod template metadata"
  asserts:
  - equal:
      path: spec.template.metadata.labels
      value:
        app.kubernetes.io/component: database
        app.kubernetes.io/instance: postgresql
        app.kubernetes.io/managed-by: Helm
        app.kubernetes.io/name: postgresql
        app.kubernetes.io/version: "16.3"
        helm.sh/chart: postgresql-0.0.3
  documentSelector:
    path: kind
    value: StatefulSet

- it: "should render StatefulSet with correct container configurations"
  asserts:
  - equal:
      path: spec.template.spec.containers[0].name
      value: "postgres"
  - equal:
      path: spec.template.spec.containers[0].image
      value: "postgres:16-alpine"
  - equal:
      path: spec.template.spec.containers[0].imagePullPolicy
      value: "IfNotPresent"
  - equal:
      path: spec.template.spec.containers[0].ports[0].containerPort
      value: 5432
  - equal:
      path: spec.template.spec.containers[0].ports[0].name
      value: "postgres"
  - equal:
      path: spec.template.spec.containers[0].env[0].name
      value: "POSTGRES_DB"
  - equal:
      path: spec.template.spec.containers[0].env[0].value
      value: "postgres"
  - equal:
      path: spec.template.spec.containers[0].env[1].name
      value: "POSTGRES_USER"
  - equal:
      path: spec.template.spec.containers[0].env[1].value
      value: "postgres"
  - equal:
      path: spec.template.spec.containers[0].env[2].name
      value: "POSTGRES_PASSWORD"
  - equal:
      path: spec.template.spec.containers[0].env[2].valueFrom.secretKeyRef.name
      value: "postgresql"
  - equal:
      path: spec.template.spec.containers[0].env[2].valueFrom.secretKeyRef.key
      value: "password"
  - equal:
      path: spec.template.spec.containers[0].volumeMounts[0].name
      value: "postgresql"
  - equal:
      path: spec.template.spec.containers[0].volumeMounts[0].mountPath
      value: "/var/lib/postgresql/"

- it: "should render StatefulSet with correct volumeClaimTemplates"
  asserts:
  - equal:
      path: spec.volumeClaimTemplates[0].metadata.name
      value: postgresql
  - equal:
      path: spec.volumeClaimTemplates[0].spec.accessModes[0]
      value: "ReadWriteMany"
  - equal:
      path: spec.volumeClaimTemplates[0].spec.resources.requests.storage
      value: "50Gi"
  - equal:
      path: spec.volumeClaimTemplates[0].spec.storageClassName
      value: "csi-lvm-linear"
  - equal:
      path: spec.volumeClaimTemplates[0].spec.volumeMode
      value: "Filesystem"
  documentSelector:
    path: kind
    value: StatefulSet