Test that YAML anchors work (#96)

bundle/config/tests/yaml_anchors/bundle.yml

@@ -0,0 +1,13 @@
+bundle:
+  name: yaml_anchors
+
+resources:
+  jobs:
+    my_job:
+      _: &common_cluster
+        spark_version: "10.4.x-scala2.12"
+      tasks:
+        - task_key: "t1"
+          new_cluster: *common_cluster
+        - task_key: "t2"
+          new_cluster: *common_cluster

bundle/config/tests/yaml_anchors_test.go

@@ -0,0 +1,24 @@
+package config_tests
+
+import (
+	"testing"
+
+	"github.com/stretchr/testify/assert"
+	"github.com/stretchr/testify/require"
+)
+
+func TestYAMLAnchors(t *testing.T) {
+	root := load(t, "./yaml_anchors")
+	assert.Len(t, root.Resources.Jobs, 1)
+
+	j := root.Resources.Jobs["my_job"]
+	require.Len(t, j.Tasks, 2)
+
+	t0 := j.Tasks[0]
+	t1 := j.Tasks[1]
+	require.NotNil(t, t0)
+	require.NotNil(t, t1)
+
+	assert.Equal(t, "10.4.x-scala2.12", t0.NewCluster.SparkVersion)
+	assert.Equal(t, "10.4.x-scala2.12", t1.NewCluster.SparkVersion)
+}