Apply workaround to Chroma query (#890)

* Apply workaround to Chroma query

* Update test for Chroma similarity_search_by_vector

---------

Co-authored-by: Andrei Bondarev <[email protected]>

Author: justi

lib/langchain/vectorsearch/chroma.rb

@@ -116,7 +116,8 @@ def similarity_search_by_vector(
       count = collection.count
       n_results = [count, k].min
 
-      collection.query(query_embeddings: [embedding], results: n_results)
+      # workaround mentioned here: https://github.com/mariochavez/chroma/issues/29
+      collection.query(query_embeddings: [embedding], results: n_results, where: nil, where_document: nil)
     end
 
     # Ask a question and return the answer

spec/langchain/vectorsearch/chroma_spec.rb

@@ -123,7 +123,7 @@
   describe "#similarity_search_by_vector" do
     before do
       allow_any_instance_of(Chroma::Resources::Collection).to receive(:count).and_return(count)
-      allow_any_instance_of(Chroma::Resources::Collection).to receive(:query).with(query_embeddings: [embedding], results: count).and_return(results)
+      allow_any_instance_of(Chroma::Resources::Collection).to receive(:query).with(query_embeddings: [embedding], results: count, where: nil, where_document: nil).and_return(results)
     end
 
     it "searches for similar texts" do