@@ -201,6 +201,39 @@ describe(useEmbeddedMetadata.name, () => {
201201cleanupTags ( ) ;
202202} ) ;
203203
204+ it ( "Will delete the original metadata node when you try deleting a metadata state value" , ( ) => {
205+ const key = "aardvark" ;
206+ const tagToDelete :MetadataKey = "user" ;
207+
208+ const cleanupTags = seedInitialMetadata ( key ) ;
209+ const { result} = renderMetadataHook ( key ) ;
210+
211+ const query = `meta[${ key } ${ tagToDelete } ;
212+ let userNode = document . querySelector ( query ) ;
213+ expect ( userNode ) . not . toBeNull ( ) ;
214+
215+ act ( ( ) => result . current . clearMetadataByKey ( tagToDelete ) ) ;
216+ userNode = document . querySelector ( query ) ;
217+ expect ( userNode ) . toBeNull ( ) ;
218+
219+ cleanupTags ( ) ;
220+ } ) ;
221+
222+ it ( "Will not notify subscribers if you try deleting a metadata value that does not exist (or has already been deleted)" , ( ) => {
223+ const key = "giraffe" ;
224+ const tagToDelete :MetadataKey = "entitlements" ;
225+
226+ const cleanupTags = seedInitialMetadata ( key ) ;
227+ const { result} = renderMetadataHook ( key ) ;
228+ act ( ( ) => result . current . clearMetadataByKey ( tagToDelete ) ) ;
229+
230+ const resultBeforeNoOp = result . current . metadata ;
231+ act ( ( ) => result . current . clearMetadataByKey ( tagToDelete ) ) ;
232+ expect ( result . current . metadata ) . toBe ( resultBeforeNoOp ) ;
233+
234+ cleanupTags ( ) ;
235+ } ) ;
236+
204237// Need to guarantee this, or else we could have a good number of bugs in the
205238// React UI
206239it ( "Always treats metadata as immutable values during all deletions" , ( ) => {