Add unit tests (#601)

unittests/deployment/storage-class-configuration.yaml

@@ -0,0 +1,52 @@
+# File: tests/gitea-storageclass-tests.yaml
+
+suite: storage class configuration tests
+
+release:
+  name: gitea-storageclass-tests
+  namespace: testing
+
+templates:
+  - templates/gitea/deployment.yaml
+  - templates/gitea/config.yaml
+  - templates/gitea/pvc.yaml
+
+tests:
+  - it: should set storageClassName when persistence.storageClass is defined
+    template: templates/gitea/deployment.yaml
+    set:
+      persistence.storageClass: "my-storage-class"
+    asserts:
+      - contains:
+          path: spec.template.spec.volumes[0].persistentVolumeClaim.storageClassName
+          content: "my-storage-class"
+
+  - it: should not set storageClassName when persistence.storageClass is not defined
+    template: templates/gitea/deployment.yaml
+    set:
+      persistence.storageClass: null
+    asserts:
+      - notContains:
+          path: spec.template.spec.volumes[0].persistentVolumeClaim.storageClassName
+          any: true
+          content: ".*"
+
+  - it: should set global.storageClass when persistence.storageClass is not defined
+    template: templates/gitea/deployment.yaml
+    set:
+      persistence.storageClass: null
+      global.storageClass: "default-storage-class"
+    asserts:
+      - contains:
+          path: spec.template.spec.volumes[0].persistentVolumeClaim.storageClassName
+          content: "default-storage-class"
+
+  - it: should set storageClassName when persistence.storageClass is defined and global.storageClass is defined
+    template: templates/gitea/deployment.yaml
+    set:
+      global.storageClass: "default-storage-class"
+      persistence.storageClass: "my-storage-class"
+    asserts:
+      - contains:
+          path: spec.template.spec.volumes[0].persistentVolumeClaim.storageClassName
+          content: "my-storage-class"