OpenSearch/rest-api-spec/test/update/20_doc_upsert.yaml

---
"Doc upsert":

  - do:
      update:
          index:    test_1
          type:     test
          id:       1
          body:
            doc:    { foo: bar, count: 1 }
            upsert: { foo: baz }

  - do:
      get:
          index:  test_1
          type:   test
          id:     1

  - match:  { _source.foo:        baz }
  - is_false:   _source.count


  - do:
      update:
          index:    test_1
          type:     test
          id:       1
          body:
            doc:    { foo: bar, count: 1 }
            upsert: { foo: baz }

  - do:
      get:
          index:  test_1
          type:   test
          id:     1

  - match:  { _source.foo:        bar }
  - match:  { _source.count:      1   }