Adding helm test hooks for mongodb-replicaset (#609)

* Adding helm test hooks for mongodb-replicaset

* Fix truncation 24->63, whitespace and merge conflicts

* Removed wrapper and cleaned up

* Use image from template

* Remove dockerfile and custom image

* Moved to new locatio

stable/mongodb-replicaset/templates/mongo-up-test.yaml

@@ -0,0 +1,37 @@
+apiVersion: v1
+kind: Pod
+metadata:
+  name: {{ template "fullname" . }}-test
+  annotations:
+    "helm.sh/hook": test-success
+    "pod.beta.kubernetes.io/init-containers": '[
+      {
+        "name": "test-framework",
+        "image": "dduportal/bats:0.4.0",
+        "command": ["bash", "-c", "
+          set -ex\n
+          # copy bats to tools dir\n
+          cp -R /usr/local/libexec/ /tools/bats/\n
+        "],
+        "volumeMounts": [
+          {"name": "tools", "mountPath": "/tools"}
+        ]
+      }
+    ]'
+spec:
+  containers:
+    - name: mongo
+      image: "{{ .Values.image.name }}:{{ .Values.image.tag }}"
+      command: ["/tools/bats/bats", "-t", "/tests/mongo-up-test.sh"]
+      volumeMounts:
+        - name: tools
+          mountPath: /tools
+        - name: tests
+          mountPath: /tests
+  volumes:
+  - name: tools
+    emptyDir: {}
+  - name: tests
+    configMap:
+      name: {{ template "fullname" . }}-tests
+  restartPolicy: Never

stable/mongodb-replicaset/templates/mongodb-up-test-config.yaml

@@ -0,0 +1,85 @@
+apiVersion: v1
+kind: ConfigMap
+metadata:
+  name: {{ template "fullname" . }}-tests
+  labels:
+    app: {{ template "fullname" . }}-tests
+data:
+  mongo-up-test.sh: |
+    pod_name() {
+      echo {{ template "fullname" . }}-$1.{{ template "fullname" . }}.default.svc.cluster.local
+    }
+
+    master_pod() {
+      for i in {0..2}
+      do
+        response=$(mongo \
+            --host=$(pod_name $i) \
+            --eval="rs.isMaster().ismaster")
+        if [[ $response =~ "true" ]]; then
+          echo $(pod_name $i)
+          break
+        fi
+      done
+    }
+
+    setup() {
+        ready=0
+        until [[ $ready -eq 3 ]];
+        do
+         echo "Waiting for application to become ready" >&2
+         sleep 1
+         ready=0
+
+         for i in {0..2}
+          do
+            response=$(mongo \
+                --host=$(pod_name $i) \
+                --eval="rs.status()") || true
+            if [[ $response =~ .*ok.* ]]; then
+              ready=$((ready+1))
+            fi
+          done
+        done
+    }
+
+    @test "Testing mongodb client is accessible" {
+      mongo -h
+      [ "$?" -eq 0 ]
+    }
+
+    @test "Connect mongodb client to mongodb pods" {
+      for i in {0..2}
+      do
+        response=$(mongo \
+            --host=$(pod_name $i) \
+            --eval="rs.status()")
+        if [[ ! $response =~ .*ok.* ]]; then
+          exit 1
+        fi
+      done
+    }
+
+    @test "Write key to master" {
+      response=$(mongo \
+          --host=$(master_pod) \
+          --eval="db.test.insert({\"abc\": \"def\"}).nInserted")
+      if [[ ! $response =~ "1" ]]; then
+        exit 1
+      fi
+    }
+
+    @test "Read key from slaves" {
+      # wait for slaves to catch up
+      sleep 10
+
+      for i in {0..2}
+      do
+        response=$(mongo \
+          --host=$(pod_name $i) \
+          --eval="rs.slaveOk(); db.test.find({\"abc\":\"def\"})")
+        if [[ ! $response =~ .*def.* ]]; then
+          exit 1
+        fi
+      done
+    }