OpenSearch/rest-api-spec/test/search/40_search_request_template.yaml

---
"Template search request":

  - do:
      index:
        index:  test
        type:   testtype
        id:     1
        body:   { "text": "value1" }
  - do:
      index:
        index:  test
        type:   testtype
        id:     2
        body:   { "text": "value2" }
  - do:
      indices.refresh: {}

  - do:
      search_template:
        body: { "template" : { "query": { "term": { "text": { "value": "{{template}}" } } } }, "params": { "template": "value1" } }

  - match: { hits.total: 1 }

  - do:
      search_template:
        body: { "template" : { "query": { "match_{{template}}": {} } }, "params" : { "template" : "all" } }

  - match: { hits.total: 2 }