hacky fix for render task, add test for partial naming collision

lib/kubernetes-deploy/render_task.rb

@@ -29,7 +29,7 @@ def run!(stream, only_filenames = [])
       @logger.phase_heading("Initializing render task")
 
       filenames = if only_filenames.empty?
-        TemplateDiscovery.new(@template_dir).templates
+        TemplateDiscovery.new([@template_dir]).templates[@template_dir]
       else
         only_filenames
       end

test/fixtures/test-partials2/deployment.yml.erb

@@ -0,0 +1,4 @@
+---
+apiVersion: extensions/v1beta1
+kind: Deployment
+<<: <%= partial 'pod' %>  # Use same partial name as `test-partials` dir to ensure no naming collision

test/fixtures/test-partials2/partials/pod.yaml.erb

@@ -0,0 +1,15 @@
+metadata:
+  name: web-from-partial
+spec:
+  replicas: 1
+  template:
+    metadata:
+      labels:
+        name: web-from-partial
+        app: test-partials
+    spec: 
+      containers:
+      - name: partial-pod
+        image: busybox
+        imagePullPolicy: IfNotPresent
+        command: ["sleep", "8000"]

test/integration/kubernetes_deploy_test.rb

@@ -803,11 +803,15 @@ def test_deploy_successful_with_partial_availability
   end
 
   def test_deploy_successful_with_multiple_template_dirs
-    deploy_dir(fixture_path("hello-cloud"), fixture_path("cronjobs"))
-    assert_logs_match_all([
-            %r{Service/web\s+Doesn't require any endpoint},
-            %r{Deployment/web\s+0 replicas},
-          ])
+    result = deploy_dir(fixture_path("test-partials"), fixture_path("cronjobs"),
+      bindings: { 'supports_partials' => 'yep' })
+    assert_deploy_success(result)
+  end
+
+  def test_deploy_successful_with_multiple_template_dirs_multiple_partials
+    result = deploy_dir(fixture_path("test-partials"), fixture_path("test-partials2"),
+      bindings: { 'supports_partials' => 'yep' })
+    assert_deploy_success(false)
   end
 
   def test_deploy_aborts_immediately_if_metadata_name_missing