Manifest inheritance merge

map_test.go

package generic_test

import (
	. "github.com/cloudfoundry/cli/generic"
	. "github.com/onsi/ginkgo"
	. "github.com/onsi/gomega"
)

func init() {
	Describe("generic maps", func() {
		It("deep merges, with the last map taking precedence in conflicts", func() {
			map1 := NewMap(map[interface{}]interface{}{
				"key1": "val1",
				"key2": "val2",
				"nest1": map[interface{}]interface{}{
					"nestKey1": "nest1Val1",
					"nestKey2": "nest1Val2",
				},
				"nest2": []interface{}{
					"nest2Val1",
				},
				"nest3": []interface{}{
					map[interface{}]interface{}{
						"nestKey1": "nest3Val1",
						"nestKey2": "nest3Val2",
					},
				},
			})

			map2 := NewMap(map[interface{}]interface{}{
				"key1": "newVal1",
				"nest1": map[interface{}]interface{}{
					"nestKey1": "newNest1Val1",
				},
				"nest2": []interface{}{
					"something",
				},
				"nest3": []interface{}{
					map[interface{}]interface{}{
						"nestKey2": "nest3newval",
					},
				},
			})

			expectedMap := NewMap(map[interface{}]interface{}{
				"key1": "newVal1",
				"key2": "val2",
				"nest1": NewMap(map[interface{}]interface{}{
					"nestKey1": "newNest1Val1",
					"nestKey2": "nest1Val2",
				}),
				"nest2": []interface{}{
					"nest2Val1",
					"something",
				},
				"nest3": []interface{}{
					map[interface{}]interface{}{
						"nestKey1": "nest3Val1",
						"nestKey2": "nest3newval",
					},
				},
			})

			mergedMap := DeepMerge(map1, map2)
			Expect(mergedMap).To(Equal(expectedMap))
		})
	})
}