add test for dnsConfig and dnsPolicy

Author: cognifloyd

CHANGELOG.md

@@ -4,7 +4,7 @@
 * Advanced Feature: Make securityContext (on Deployments/Jobs) and podSecurityContext (on Pods) configurable. This allows dropping all capabilities, for example. You can override the securityContext for `st2actionrunner`, `st2sensorcontainer`, and `st2client` if your actions or sensors need, for example, additional capabilites that the rest of StackStorm does not need. (#271) (by @cognifloyd)
 * Prefix template helpers with chart name and format helper comments as template comments. (#272) (by @cognifloyd)
 * New feature: Add `extra_volumes` to all python-based st2 deployments. This can facilitate changing log levels by loading logging conf file(s) from a custom ConfigMap. (#276) (by @cognifloyd)
-* Initialize basic unittest infrastructure using `helm-unittest`. Added tests for labels, custom annotations, SecurityContext, pullSecrets, pullPolicy, Resources, nodeSelector, tolerations, and affinity. (#284, #288)
+* Initialize basic unittest infrastructure using `helm-unittest`. Added tests for labels, custom annotations, SecurityContext, pullSecrets, pullPolicy, Resources, nodeSelector, tolerations, affinity, dnsPolicy, and dnsConfig. (#284, #288)
 
 ## v0.80.0
 * Switch st2 to `v3.6` as a new default stable version (#274)

tests/unit/dns_test.yaml

@@ -0,0 +1,64 @@
+---
+suite: DNS
+templates:
+  # primary template files
+  - deployments.yaml
+  - jobs.yaml
+
+  # included templates must also be listed
+  - configmaps_packs.yaml
+  - configmaps_rbac.yaml
+  - configmaps_st2-conf.yaml
+  - configmaps_st2-urls.yaml
+  - configmaps_st2web.yaml
+  - secrets_datastore_crypto_key.yaml
+  - secrets_ssh.yaml
+  - secrets_st2apikeys.yaml
+  - secrets_st2auth.yaml
+  - secrets_st2chatops.yaml
+
+# relevant values:
+#   dnsPolicy:
+#   dnsConfig:
+
+tests:
+  - it: Deployments and Jobs default to no dnsPolicy or dnsConfig
+    templates:
+      - deployments.yaml
+      - jobs.yaml
+    set:
+      st2: 
+        packs: { sensors: [] } # ensure only 1 sensor
+        rbac: { enabled: true } # enable rbac job
+    asserts:
+      - isNull:
+          path: spec.template.spec.dnsPolicy
+      - isNull:
+          path: spec.template.spec.dnsConfig
+
+  - it: Deployments and Jobs accept custom dnsPolicy or dnsConfig
+    templates:
+      - deployments.yaml
+      - jobs.yaml
+    set:
+      dnsPolicy: &dnsPolicy ClusterFirstWithHostNet
+      dnsConfig: &dnsConfig
+        nameservers:
+          - 1.2.3.4
+        searches:
+          - ns1.svc.cluster-domain.example
+          - my.dns.search.suffix
+        options:
+          - name: ndots
+            value: "2"
+          - name: edns0
+      st2: 
+        packs: { sensors: [] } # ensure only 1 sensor
+        rbac: { enabled: true } # enable rbac job
+    asserts:
+      - equal:
+          path: spec.template.spec.dnsPolicy
+          value: *dnsPolicy
+      - equal:
+          path: spec.template.spec.dnsConfig
+          value: *dnsConfig