Add chart testing workflow

.github/workflows/charts-lint-test.yaml

@@ -0,0 +1,32 @@
+name: Lint and Test Charts
+
+on: pull_request
+
+jobs:
+  lint-test:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v2
+
+      - name: Fetch history
+        run: git fetch --prune --unshallow
+
+      - name: Run chart-testing (lint)
+        id: lint
+        uses: helm/chart-testing-action@v1.1.0
+        with:
+          command: lint
+          config: ct.yaml
+
+      - name: Create kind cluster
+        uses: helm/kind-action@v1.0.0
+        # Only build a kind cluster if there are chart changes to test.
+        if: steps.lint.outputs.changed == 'true'
+
+      - name: Install charts
+        uses: helm/chart-testing-action@v1.1.0
+        if: steps.lint.outputs.changed == 'true'
+        with:
+          command: install
+          config: ct.yaml

chart_schema.yaml

@@ -0,0 +1,37 @@
+name: str()
+home: str(required=False)
+version: str()
+apiVersion: str()
+appVersion: any(str(), num(), required=False)
+description: str()
+keywords: list(str(), required=False)
+sources: list(str(), required=False)
+maintainers: list(include('maintainer'), required=False)
+dependencies: list(include('dependency'), required=False)
+icon: str(required=False)
+engine: str(required=False)
+condition: str(required=False)
+tags: str(required=False)
+deprecated: bool(required=False)
+kubeVersion: str(required=False)
+annotations: map(str(), str(), required=False)
+type: str(required=False)
+---
+maintainer:
+  name: str()
+  email: str(required=False)
+  url: str(required=False)
+---
+dependency:
+  name: str()
+  version: str()
+  repository: str()
+  condition: str(required=False)
+  tags: list(str(), required=False)
+  enabled: bool(required=False)
+  import-values: any(list(str()), list(include('import-value')), required=False)
+  alias: str(required=False)
+---
+import-value:
+  child: str()
+  parent: str()

contrib/chart/backstage/Chart.yaml

@@ -22,7 +22,7 @@ dependencies:
     repository: https://charts.bitnami.com/bitnami
 
 maintainers:
-  - name: Martina Iglesias Fernandez
+  - name: Martina Iglesias Fernández
     email: martina@roadie.io
     url: https://roadie.io
   - name: David Tuite

ct.yaml

@@ -0,0 +1,8 @@
+charts:
+  - contrib/chart/backstage
+
+validate-maintainers: false
+debug: true
+target-branch: master
+chart-repos:
+  - bitnami=https://charts.bitnami.com/bitnami

lintconf.yaml

@@ -0,0 +1,42 @@
+---
+rules:
+  braces:
+    min-spaces-inside: 0
+    max-spaces-inside: 0
+    min-spaces-inside-empty: -1
+    max-spaces-inside-empty: -1
+  brackets:
+    min-spaces-inside: 0
+    max-spaces-inside: 0
+    min-spaces-inside-empty: -1
+    max-spaces-inside-empty: -1
+  colons:
+    max-spaces-before: 0
+    max-spaces-after: 1
+  commas:
+    max-spaces-before: 0
+    min-spaces-after: 1
+    max-spaces-after: 1
+  comments:
+    require-starting-space: true
+    min-spaces-from-content: 2
+  document-end: disable
+  document-start: disable # No --- to start a file
+  empty-lines:
+    max: 2
+    max-start: 0
+    max-end: 0
+  hyphens:
+    max-spaces-after: 1
+  indentation:
+    spaces: consistent
+    indent-sequences: whatever # - list indentation will handle both indentation and without
+    check-multi-line-strings: false
+  key-duplicates: enable
+  line-length: disable # Lines can be any length
+  new-line-at-end-of-file: enable
+  new-lines:
+    type: unix
+  trailing-spaces: enable
+  truthy:
+    level: warning