Add tests for multi-level dependencies.

Closes #9940

Signed-off-by: Aram Zegerius <aram@zegeri.us>
Signed-off-by: Ankita Bhopatkar <ankitabhopatkar13@gmail.com>
(cherry picked from commit 4b49f35)

pkg/chartutil/dependencies_test.go

@@ -239,6 +239,37 @@ func TestProcessDependencyImportValues(t *testing.T) {
 	}
 }
 
+func TestProcessDependencyImportValuesMultiLevelPrecedence(t *testing.T) {
+	c := loadChart(t, "testdata/three-level-dependent-chart/umbrella")
+
+	e := make(map[string]string)
+
+	e["app1.service.port"] = "3456"
+	e["app2.service.port"] = "8080"
+
+	if err := processDependencyImportValues(c); err != nil {
+		t.Fatalf("processing import values dependencies %v", err)
+	}
+	cc := Values(c.Values)
+	for kk, vv := range e {
+		pv, err := cc.PathValue(kk)
+		if err != nil {
+			t.Fatalf("retrieving import values table %v %v", kk, err)
+		}
+
+		switch pv := pv.(type) {
+		case float64:
+			if s := strconv.FormatFloat(pv, 'f', -1, 64); s != vv {
+				t.Errorf("failed to match imported float value %v with expected %v", s, vv)
+			}
+		default:
+			if pv != vv {
+				t.Errorf("failed to match imported string value %q with expected %q", pv, vv)
+			}
+		}
+	}
+}
+
 func TestProcessDependencyImportValuesForEnabledCharts(t *testing.T) {
 	c := loadChart(t, "testdata/import-values-from-enabled-subchart/parent-chart")
 	nameOverride := "parent-chart-prod"

pkg/chartutil/testdata/three-level-dependent-chart/README.md

@@ -0,0 +1,16 @@
+# Three Level Dependent Chart
+
+This chart is for testing the processing of multi-level dependencies.
+
+Consists of the following charts:
+
+- Library Chart
+- App Chart (Uses Library Chart as dependecy, 2x: app1/app2)
+- Umbrella Chart (Has all the app charts as dependencies)
+
+The precendence is as follows: `library < app < umbrella`
+
+Catches two use-cases:
+
+- app overwriting library (app2)
+- umbrella overwriting app and library (app1)

pkg/chartutil/testdata/three-level-dependent-chart/umbrella/Chart.yaml

@@ -0,0 +1,33 @@
+apiVersion: v2
+name: umbrella
+description: A Helm chart for Kubernetes
+
+# A chart can be either an 'application' or a 'library' chart.
+#
+# Application charts are a collection of templates that can be packaged into versioned archives
+# to be deployed.
+#
+# Library charts provide useful utilities or functions for the chart developer. They're included as
+# a dependency of application charts to inject those utilities and functions into the rendering
+# pipeline. Library charts do not define any templates and therefore cannot be deployed.
+type: application
+
+# This is the chart version. This version number should be incremented each time you make changes
+# to the chart and its templates, including the app version.
+# Versions are expected to follow Semantic Versioning (https://semver.org/)
+version: 0.1.0
+
+# This is the version number of the application being deployed. This version number should be
+# incremented each time you make changes to the application. Versions are not expected to
+# follow Semantic Versioning. They should reflect the version the application is using.
+# It is recommended to use it with quotes.
+
+dependencies:
+- name: app1
+  version: 0.1.0
+  repository: file://../app1
+  condition: app1.enabled
+- name: app2
+  version: 0.1.0
+  repository: file://../app2
+  condition: app2.enabled

pkg/chartutil/testdata/three-level-dependent-chart/umbrella/charts/app1/Chart.yaml

@@ -0,0 +1,12 @@
+apiVersion: v2
+appVersion: 1.16.0
+dependencies:
+- import-values:
+  - defaults
+  name: library
+  repository: file://../library
+  version: 0.1.0
+description: A Helm chart for Kubernetes
+name: app1
+type: application
+version: 0.1.0

pkg/chartutil/testdata/three-level-dependent-chart/umbrella/charts/app1/charts/library/Chart.yaml

@@ -0,0 +1,6 @@
+apiVersion: v2
+appVersion: 1.16.0
+description: A Helm chart for Kubernetes
+name: library
+type: library
+version: 0.1.0

pkg/chartutil/testdata/three-level-dependent-chart/umbrella/charts/app1/charts/library/templates/NOTES.txt

@@ -0,0 +1,22 @@
+1. Get the application URL by running these commands:
+{{- if .Values.ingress.enabled }}
+{{- range $host := .Values.ingress.hosts }}
+  {{- range .paths }}
+  http{{ if $.Values.ingress.tls }}s{{ end }}://{{ $host.host }}{{ .path }}
+  {{- end }}
+{{- end }}
+{{- else if contains "NodePort" .Values.service.type }}
+  export NODE_PORT=$(kubectl get --namespace {{ .Release.Namespace }} -o jsonpath="{.spec.ports[0].nodePort}" services {{ include "library.fullname" . }})
+  export NODE_IP=$(kubectl get nodes --namespace {{ .Release.Namespace }} -o jsonpath="{.items[0].status.addresses[0].address}")
+  echo http://$NODE_IP:$NODE_PORT
+{{- else if contains "LoadBalancer" .Values.service.type }}
+     NOTE: It may take a few minutes for the LoadBalancer IP to be available.
+           You can watch the status of by running 'kubectl get --namespace {{ .Release.Namespace }} svc -w {{ include "library.fullname" . }}'
+  export SERVICE_IP=$(kubectl get svc --namespace {{ .Release.Namespace }} {{ include "library.fullname" . }} --template "{{"{{ range (index .status.loadBalancer.ingress 0) }}{{.}}{{ end }}"}}")
+  echo http://$SERVICE_IP:{{ .Values.service.port }}
+{{- else if contains "ClusterIP" .Values.service.type }}
+  export POD_NAME=$(kubectl get pods --namespace {{ .Release.Namespace }} -l "app.kubernetes.io/name={{ include "library.name" . }},app.kubernetes.io/instance={{ .Release.Name }}" -o jsonpath="{.items[0].metadata.name}")
+  export CONTAINER_PORT=$(kubectl get pod --namespace {{ .Release.Namespace }} $POD_NAME -o jsonpath="{.spec.containers[0].ports[0].containerPort}")
+  echo "Visit http://127.0.0.1:8080 to use your application"
+  kubectl --namespace {{ .Release.Namespace }} port-forward $POD_NAME 8080:$CONTAINER_PORT
+{{- end }}

pkg/chartutil/testdata/three-level-dependent-chart/umbrella/charts/app1/charts/library/templates/_helpers.tpl

@@ -0,0 +1,62 @@
+{{/*
+Expand the name of the chart.
+*/}}
+{{- define "library.name" -}}
+{{- default .Chart.Name .Values.nameOverride | trunc 63 | trimSuffix "-" }}
+{{- end }}
+
+{{/*
+Create a default fully qualified app name.
+We truncate at 63 chars because some Kubernetes name fields are limited to this (by the DNS naming spec).
+If release name contains chart name it will be used as a full name.
+*/}}
+{{- define "library.fullname" -}}
+{{- if .Values.fullnameOverride }}
+{{- .Values.fullnameOverride | trunc 63 | trimSuffix "-" }}
+{{- else }}
+{{- $name := default .Chart.Name .Values.nameOverride }}
+{{- if contains $name .Release.Name }}
+{{- .Release.Name | trunc 63 | trimSuffix "-" }}
+{{- else }}
+{{- printf "%s-%s" .Release.Name $name | trunc 63 | trimSuffix "-" }}
+{{- end }}
+{{- end }}
+{{- end }}
+
+{{/*
+Create chart name and version as used by the chart label.
+*/}}
+{{- define "library.chart" -}}
+{{- printf "%s-%s" .Chart.Name .Chart.Version | replace "+" "_" | trunc 63 | trimSuffix "-" }}
+{{- end }}
+
+{{/*
+Common labels
+*/}}
+{{- define "library.labels" -}}
+helm.sh/chart: {{ include "library.chart" . }}
+{{ include "library.selectorLabels" . }}
+{{- if .Chart.AppVersion }}
+app.kubernetes.io/version: {{ .Chart.AppVersion | quote }}
+{{- end }}
+app.kubernetes.io/managed-by: {{ .Release.Service }}
+{{- end }}
+
+{{/*
+Selector labels
+*/}}
+{{- define "library.selectorLabels" -}}
+app.kubernetes.io/name: {{ include "library.name" . }}
+app.kubernetes.io/instance: {{ .Release.Name }}
+{{- end }}
+
+{{/*
+Create the name of the service account to use
+*/}}
+{{- define "library.serviceAccountName" -}}
+{{- if .Values.serviceAccount.create }}
+{{- default (include "library.fullname" .) .Values.serviceAccount.name }}
+{{- else }}
+{{- default "default" .Values.serviceAccount.name }}
+{{- end }}
+{{- end }}

pkg/chartutil/testdata/three-level-dependent-chart/umbrella/charts/app1/charts/library/templates/_service.yaml

@@ -0,0 +1,17 @@
+{{- define "library.service" -}}
+apiVersion: v1
+kind: Service
+metadata:
+  name: {{ include "library.fullname" . }}
+  labels:
+    {{- include "library.labels" . | nindent 4 }}
+spec:
+  type: {{ .Values.service.type }}
+  ports:
+    - port: {{ .Values.service.port }}
+      targetPort: http
+      protocol: TCP
+      name: http
+  selector:
+    {{- include "library.selectorLabels" . | nindent 4 }}
+{{- end -}}

pkg/chartutil/testdata/three-level-dependent-chart/umbrella/charts/app1/charts/library/values.yaml

@@ -0,0 +1,83 @@
+# Default values for library.
+# This is a YAML-formatted file.
+# Declare variables to be passed into your templates.
+exports:
+  defaults:
+    replicaCount: 1
+
+    image:
+      repository: nginx
+      pullPolicy: IfNotPresent
+      # Overrides the image tag whose default is the chart appVersion.
+      tag: ""
+
+    imagePullSecrets: []
+    nameOverride: ""
+    fullnameOverride: ""
+
+    serviceAccount:
+      # Specifies whether a service account should be created
+      create: false
+      # Annotations to add to the service account
+      annotations: {}
+      # The name of the service account to use.
+      # If not set and create is true, a name is generated using the fullname template
+      name: ""
+
+    podAnnotations: {}
+
+    podSecurityContext: {}
+      # fsGroup: 2000
+
+    securityContext: {}
+      # capabilities:
+      #   drop:
+      #   - ALL
+      # readOnlyRootFilesystem: true
+      # runAsNonRoot: true
+      # runAsUser: 1000
+
+    service:
+      type: ClusterIP
+      port: 9090
+
+    ingress:
+      enabled: false
+      className: ""
+      annotations: {}
+        # kubernetes.io/ingress.class: nginx
+        # kubernetes.io/tls-acme: "true"
+      hosts:
+        - host: chart-example.local
+          paths:
+            - path: /
+              pathType: ImplementationSpecific
+      tls: []
+      #  - secretName: chart-example-tls
+      #    hosts:
+      #      - chart-example.local
+
+    resources: {}
+      # We usually recommend not to specify default resources and to leave this as a conscious
+      # choice for the user. This also increases chances charts run on environments with little
+      # resources, such as Minikube. If you do want to specify resources, uncomment the following
+      # lines, adjust them as necessary, and remove the curly braces after 'resources:'.
+      # limits:
+      #   cpu: 100m
+      #   memory: 128Mi
+      # requests:
+      #   cpu: 100m
+      #   memory: 128Mi
+
+    autoscaling:
+      enabled: false
+      minReplicas: 1
+      maxReplicas: 100
+      targetCPUUtilizationPercentage: 80
+      # targetMemoryUtilizationPercentage: 80
+
+    nodeSelector: {}
+
+    tolerations: []
+
+    affinity: {}

pkg/chartutil/testdata/three-level-dependent-chart/umbrella/charts/app1/templates/service.yaml

@@ -0,0 +1 @@
+{{- include "library.service" . }}

pkg/chartutil/testdata/three-level-dependent-chart/umbrella/charts/app1/values.yaml

@@ -0,0 +1,7 @@
+# Default values for app1.
+# This is a YAML-formatted file.
+# Declare variables to be passed into your templates.
+
+service:
+  type: ClusterIP
+  port: 1234

pkg/chartutil/testdata/three-level-dependent-chart/umbrella/charts/app2/Chart.yaml

@@ -0,0 +1,12 @@
+apiVersion: v2
+appVersion: 1.16.0
+dependencies:
+- import-values:
+  - defaults
+  name: library
+  repository: file://../library
+  version: 0.1.0
+description: A Helm chart for Kubernetes
+name: app2
+type: application
+version: 0.1.0

pkg/chartutil/testdata/three-level-dependent-chart/umbrella/charts/app2/charts/library/Chart.yaml

@@ -0,0 +1,6 @@
+apiVersion: v2
+appVersion: 1.16.0
+description: A Helm chart for Kubernetes
+name: library
+type: library
+version: 0.1.0

pkg/chartutil/testdata/three-level-dependent-chart/umbrella/charts/app2/charts/library/templates/NOTES.txt

@@ -0,0 +1,22 @@
+1. Get the application URL by running these commands:
+{{- if .Values.ingress.enabled }}
+{{- range $host := .Values.ingress.hosts }}
+  {{- range .paths }}
+  http{{ if $.Values.ingress.tls }}s{{ end }}://{{ $host.host }}{{ .path }}
+  {{- end }}
+{{- end }}
+{{- else if contains "NodePort" .Values.service.type }}
+  export NODE_PORT=$(kubectl get --namespace {{ .Release.Namespace }} -o jsonpath="{.spec.ports[0].nodePort}" services {{ include "library.fullname" . }})
+  export NODE_IP=$(kubectl get nodes --namespace {{ .Release.Namespace }} -o jsonpath="{.items[0].status.addresses[0].address}")
+  echo http://$NODE_IP:$NODE_PORT
+{{- else if contains "LoadBalancer" .Values.service.type }}
+     NOTE: It may take a few minutes for the LoadBalancer IP to be available.
+           You can watch the status of by running 'kubectl get --namespace {{ .Release.Namespace }} svc -w {{ include "library.fullname" . }}'
+  export SERVICE_IP=$(kubectl get svc --namespace {{ .Release.Namespace }} {{ include "library.fullname" . }} --template "{{"{{ range (index .status.loadBalancer.ingress 0) }}{{.}}{{ end }}"}}")
+  echo http://$SERVICE_IP:{{ .Values.service.port }}
+{{- else if contains "ClusterIP" .Values.service.type }}
+  export POD_NAME=$(kubectl get pods --namespace {{ .Release.Namespace }} -l "app.kubernetes.io/name={{ include "library.name" . }},app.kubernetes.io/instance={{ .Release.Name }}" -o jsonpath="{.items[0].metadata.name}")
+  export CONTAINER_PORT=$(kubectl get pod --namespace {{ .Release.Namespace }} $POD_NAME -o jsonpath="{.spec.containers[0].ports[0].containerPort}")
+  echo "Visit http://127.0.0.1:8080 to use your application"
+  kubectl --namespace {{ .Release.Namespace }} port-forward $POD_NAME 8080:$CONTAINER_PORT
+{{- end }}