--- schema_version: "1" id: 6fe11a91e24af1918e6b816ef17cfcaa4434959630087a9a615f917ffb50e1f7 title: Core Matchers Reference collection: mulesoft version: current locale: en-us portal_url: https://docs.salesforce.com/mulesoft/current/en-us/munit/2.3/core-matchers-reference.md canonical_url: https://docs.mulesoft.com/munit/2.3/core-matchers-reference source_site: docs.mulesoft.com content_type: documentation content_hash: 47e203a5660353edcbbfddc5e83452e3a2f7b8c28c08e3d1393f3d304f5017f3 description: MuleSoft Documentation Site release: "2.3" latest: false --- --- product: MUnit version: 2.3 --- # Core Matchers Reference > For the full documentation index, see: https://docs.mulesoft.com/llms.txt ## nullValue() Checks that the expression is null. Example ```xml ``` ## notNullValue() Checks that the expression is not null. Example ```xml ``` ## withMediaType(String) Checks that the expression’s media type is the one specified. Example ```xml ``` ## withEncoding(String) Checks that the expression encoding is the one specified. Example ```xml ``` ## both(Matcher, Matcher) Checks that both provided matchers are successful. Example ```xml ``` ## either(Matcher,Matcher) Checks that at least one of the matchers is successful. Example ```xml ``` ## not(Object) Checks if the provided matcher is not successful. Example ```xml ``` Example ```xml ``` ## anyOf(Array) Checks if any of the matchers are successful. Example ```xml ``` ## allOf(Array) Checks if all of the matchers are successful. Example ```xml ``` ## See Also - [MUnit Matchers](https://docs.mulesoft.com/munit/2.3/munit-matchers) - [String Matchers Reference](https://docs.mulesoft.com/munit/2.3/string-matchers-reference) - [Comparable Matchers Reference](https://docs.mulesoft.com/munit/2.3/comparable-matchers-reference) - [Iterable and Map Matchers Reference](https://docs.mulesoft.com/munit/2.3/iterable-map-matchers-reference)