diff --git a/.github/workflows/coverage.yml b/.github/workflows/coverage.yml
index b8f431ba..7bfbc007 100644
--- a/.github/workflows/coverage.yml
+++ b/.github/workflows/coverage.yml
@@ -32,7 +32,7 @@ jobs:
           tool: cargo-tarpaulin
       - name: Generate code coverage
         run: |
-          cargo +nightly tarpaulin --workspace --all-features --tests --timeout 1200 --coveralls ${{ secrets.COVERALLS_REPO_TOKEN }}
+          cargo +nightly tarpaulin --workspace --all-features --timeout 1200 --coveralls ${{ secrets.COVERALLS_REPO_TOKEN }}
 
       # - name: Coveralls
       #   uses: coverallsapp/github-action@v2
diff --git a/Cargo.toml b/Cargo.toml
index 6e0ed49c..e434aae2 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -71,6 +71,7 @@ insta = { version = "1.39.0", features = ["yaml"] }
 
 [workspace.lints.rust]
 unsafe_code = "forbid"
+unexpected_cfgs = { level = "allow", check-cfg = ['cfg(tarpaulin_include)'] }
 
 [workspace.lints.clippy]
 cargo = { level = "warn", priority = -1 }
diff --git a/swiftide-core/src/query.rs b/swiftide-core/src/query.rs
index 62ed1af1..fa170c67 100644
--- a/swiftide-core/src/query.rs
+++ b/swiftide-core/src/query.rs
@@ -18,7 +18,7 @@ type Document = String;
 /// `states::Pending`: No documents have been retrieved
 /// `states::Retrieved`: Documents have been retrieved
 /// `states::Answered`: The query has been answered
-#[derive(Clone, Default, Builder)]
+#[derive(Clone, Default, Builder, PartialEq)]
 #[builder(setter(into))]
 pub struct Query<State> {
     original: String,
@@ -81,6 +81,10 @@ impl<T: Clone> Query<T> {
 }
 
 impl Query<states::Pending> {
+    pub fn new() -> Self {
+        Self::default()
+    }
+
     /// Transforms the current query
     pub fn transformed_query(&mut self, new_query: impl Into<String>) {
         let new_query = new_query.into();
@@ -111,6 +115,10 @@ impl Query<states::Pending> {
 }
 
 impl Query<states::Retrieved> {
+    pub fn new() -> Self {
+        Self::default()
+    }
+
     /// Transforms the current response
     pub fn transformed_response(&mut self, new_response: impl Into<String>) {
         let new_response = new_response.into();
@@ -140,6 +148,10 @@ impl Query<states::Retrieved> {
 }
 
 impl Query<states::Answered> {
+    pub fn new() -> Self {
+        Self::default()
+    }
+
     /// Returns the answer of the query
     pub fn answer(&self) -> &str {
         &self.state.answer
@@ -155,13 +167,13 @@ pub mod states {
     /// The query is pending and has not been used
     pub struct Pending;
 
-    #[derive(Debug, Default, Clone, Builder)]
+    #[derive(Debug, Default, Clone, Builder, PartialEq)]
     #[builder(setter(into))]
     /// Documents have been retrieved
     pub struct Retrieved {
         pub(crate) documents: Vec<Document>,
     }
-    #[derive(Debug, Default, Clone, Builder)]
+    #[derive(Debug, Default, Clone, Builder, PartialEq)]
     #[builder(setter(into))]
     /// The query has been answered
     pub struct Answered {
diff --git a/swiftide-core/src/query_evaluation.rs b/swiftide-core/src/query_evaluation.rs
index 9060fc49..80cdd143 100644
--- a/swiftide-core/src/query_evaluation.rs
+++ b/swiftide-core/src/query_evaluation.rs
@@ -38,3 +38,52 @@ impl QueryEvaluation {
         }
     }
 }
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+
+    #[test]
+    fn test_from_retrieved() {
+        let query = Query::<states::Retrieved>::new(); // Assuming Query has a new() method
+        let evaluation = QueryEvaluation::from(query.clone());
+
+        match evaluation {
+            QueryEvaluation::RetrieveDocuments(q) => assert_eq!(q, query),
+            QueryEvaluation::AnswerQuery(_) => panic!("Unexpected QueryEvaluation variant"),
+        }
+    }
+
+    #[test]
+    fn test_from_answered() {
+        let query = Query::<states::Answered>::new(); // Assuming Query has a new() method
+        let evaluation = QueryEvaluation::from(query.clone());
+
+        match evaluation {
+            QueryEvaluation::AnswerQuery(q) => assert_eq!(q, query),
+            QueryEvaluation::RetrieveDocuments(_) => panic!("Unexpected QueryEvaluation variant"),
+        }
+    }
+
+    #[test]
+    fn test_retrieve_documents_query() {
+        let query = Query::<states::Retrieved>::new(); // Assuming Query has a new() method
+        let evaluation = QueryEvaluation::RetrieveDocuments(query.clone());
+
+        match evaluation.retrieve_documents_query() {
+            Some(q) => assert_eq!(q, query),
+            None => panic!("Expected a query, got None"),
+        }
+    }
+
+    #[test]
+    fn test_answer_query() {
+        let query = Query::<states::Answered>::new(); // Assuming Query has a new() method
+        let evaluation = QueryEvaluation::AnswerQuery(query.clone());
+
+        match evaluation.answer_query() {
+            Some(q) => assert_eq!(q, query),
+            None => panic!("Expected a query, got None"),
+        }
+    }
+}
diff --git a/swiftide-core/src/query_traits.rs b/swiftide-core/src/query_traits.rs
index f650c1b5..1242ef2a 100644
--- a/swiftide-core/src/query_traits.rs
+++ b/swiftide-core/src/query_traits.rs
@@ -9,7 +9,12 @@ use crate::{
     querying::QueryEvaluation,
 };
 
+#[cfg(feature = "test-utils")]
+#[doc(hidden)]
+use mockall::{automock, predicate::str};
+
 /// Can transform queries before retrieval
+#[cfg_attr(feature = "test-utils", automock)]
 #[async_trait]
 pub trait TransformQuery: Send + Sync {
     async fn transform_query(
@@ -81,6 +86,7 @@ where
 }
 
 /// Can transform a response after retrieval
+#[cfg_attr(feature = "test-utils", automock)]
 #[async_trait]
 pub trait TransformResponse: Send + Sync {
     async fn transform_response(&self, query: Query<Retrieved>)
@@ -105,6 +111,7 @@ impl TransformResponse for Box<dyn TransformResponse> {
 }
 
 /// Can answer the original query
+#[cfg_attr(feature = "test-utils", automock)]
 #[async_trait]
 pub trait Answer: Send + Sync {
     async fn answer(&self, query: Query<states::Retrieved>) -> Result<Query<states::Answered>>;
@@ -130,6 +137,7 @@ impl Answer for Box<dyn Answer> {
 /// Evaluates a query
 ///
 /// An evaluator needs to be able to respond to each step in the query pipeline
+#[cfg_attr(feature = "test-utils", automock)]
 #[async_trait]
 pub trait EvaluateQuery: Send + Sync {
     async fn evaluate(&self, evaluation: QueryEvaluation) -> Result<()>;
diff --git a/swiftide-core/src/type_aliases.rs b/swiftide-core/src/type_aliases.rs
index 86c86d52..dc4190c4 100644
--- a/swiftide-core/src/type_aliases.rs
+++ b/swiftide-core/src/type_aliases.rs
@@ -1,3 +1,5 @@
+#![cfg(not(tarpaulin_include))]
+
 use serde::{Deserialize, Serialize};
 
 pub type Embedding = Vec<f32>;
diff --git a/swiftide-indexing/src/pipeline.rs b/swiftide-indexing/src/pipeline.rs
index fe1b8941..8e127305 100644
--- a/swiftide-indexing/src/pipeline.rs
+++ b/swiftide-indexing/src/pipeline.rs
@@ -825,4 +825,42 @@ mod tests {
             2
         );
     }
+
+    #[tokio::test]
+    async fn test_all_steps_should_work_as_dyn_box() {
+        let mut loader = MockLoader::new();
+        loader
+            .expect_into_stream_boxed()
+            .returning(|| vec![Ok(Node::default())].into());
+
+        let mut transformer = MockTransformer::new();
+        transformer.expect_transform_node().returning(Ok);
+        transformer.expect_concurrency().returning(|| None);
+
+        let mut batch_transformer = MockBatchableTransformer::new();
+        batch_transformer
+            .expect_batch_transform()
+            .returning(std::convert::Into::into);
+        batch_transformer.expect_concurrency().returning(|| None);
+        let mut chunker = MockChunkerTransformer::new();
+        chunker
+            .expect_transform_node()
+            .returning(|node| vec![node].into());
+        chunker.expect_concurrency().returning(|| None);
+
+        let mut storage = MockPersist::new();
+        storage.expect_setup().returning(|| Ok(()));
+        storage.expect_store().returning(Ok);
+        storage.expect_batch_size().returning(|| None);
+
+        let pipeline = Pipeline::from_loader(Box::new(loader) as Box<dyn Loader>)
+            .then(Box::new(transformer) as Box<dyn Transformer>)
+            .then_in_batch(
+                1,
+                Box::new(batch_transformer) as Box<dyn BatchableTransformer>,
+            )
+            .then_chunk(Box::new(chunker) as Box<dyn ChunkerTransformer>)
+            .then_store_with(Box::new(storage) as Box<dyn Persist>);
+        pipeline.run().await.unwrap();
+    }
 }
diff --git a/swiftide-macros/src/lib.rs b/swiftide-macros/src/lib.rs
index 65539411..4ee6f7ff 100644
--- a/swiftide-macros/src/lib.rs
+++ b/swiftide-macros/src/lib.rs
@@ -6,6 +6,7 @@ mod indexing_transformer;
 use indexing_transformer::indexing_transformer_impl;
 
 /// Generates boilerplate for an indexing transformer.
+#[cfg(not(tarpaulin_include))]
 #[proc_macro_attribute]
 pub fn indexing_transformer(args: TokenStream, item: TokenStream) -> TokenStream {
     indexing_transformer_impl(args, item)
diff --git a/swiftide-query/src/query/pipeline.rs b/swiftide-query/src/query/pipeline.rs
index 11bf86e8..348203b7 100644
--- a/swiftide-query/src/query/pipeline.rs
+++ b/swiftide-query/src/query/pipeline.rs
@@ -80,22 +80,19 @@ where
 {
     /// Evaluate queries with an evaluator
     #[must_use]
-    pub fn evaluate_with<T: ToOwned<Owned = impl EvaluateQuery + 'stream>>(
-        mut self,
-        evaluator: T,
-    ) -> Self {
-        self.evaluator = Some(Arc::new(Box::new(evaluator.to_owned())));
+    pub fn evaluate_with<T: EvaluateQuery + 'stream>(mut self, evaluator: T) -> Self {
+        self.evaluator = Some(Arc::new(Box::new(evaluator)));
 
         self
     }
 
     /// Transform a query into something else, see [`crate::query_transformers`]
     #[must_use]
-    pub fn then_transform_query<T: ToOwned<Owned = impl TransformQuery + 'stream>>(
+    pub fn then_transform_query<T: TransformQuery + 'stream>(
         self,
         transformer: T,
     ) -> Pipeline<'stream, S, states::Pending> {
-        let transformer = Arc::new(transformer.to_owned());
+        let transformer = Arc::new(transformer);
 
         let Pipeline {
             stream,
@@ -177,11 +174,11 @@ impl<'stream: 'static, S: SearchStrategy + 'stream> Pipeline<'stream, S, states:
 impl<'stream: 'static, S: SearchStrategy> Pipeline<'stream, S, states::Retrieved> {
     /// Transforms a retrieved query into something else
     #[must_use]
-    pub fn then_transform_response<T: ToOwned<Owned = impl TransformResponse + 'stream>>(
+    pub fn then_transform_response<T: TransformResponse + 'stream>(
         self,
         transformer: T,
     ) -> Pipeline<'stream, S, states::Retrieved> {
-        let transformer = Arc::new(transformer.to_owned());
+        let transformer = Arc::new(transformer);
         let Pipeline {
             stream,
             query_sender,
@@ -211,11 +208,11 @@ impl<'stream: 'static, S: SearchStrategy> Pipeline<'stream, S, states::Retrieved
 impl<'stream: 'static, S: SearchStrategy> Pipeline<'stream, S, states::Retrieved> {
     /// Generates an answer based on previous transformations
     #[must_use]
-    pub fn then_answer<T: ToOwned<Owned = impl Answer + 'stream>>(
+    pub fn then_answer<T: Answer + 'stream>(
         self,
         answerer: T,
     ) -> Pipeline<'stream, S, states::Answered> {
-        let answerer = Arc::new(answerer.to_owned());
+        let answerer = Arc::new(answerer);
         let Pipeline {
             stream,
             query_sender,
@@ -305,7 +302,9 @@ impl<S: SearchStrategy> Pipeline<'_, S, states::Answered> {
 
 #[cfg(test)]
 mod test {
-    use swiftide_core::querying::search_strategies;
+    use swiftide_core::{
+        querying::search_strategies, MockAnswer, MockTransformQuery, MockTransformResponse,
+    };
 
     use super::*;
 
@@ -324,4 +323,32 @@ mod test {
         let response = pipeline.query("What").await.unwrap();
         assert_eq!(response.answer(), "Ok");
     }
+
+    #[tokio::test]
+    async fn test_all_steps_should_accept_dyn_box() {
+        let mut query_transformer = MockTransformQuery::new();
+        query_transformer.expect_transform_query().returning(Ok);
+
+        let mut response_transformer = MockTransformResponse::new();
+        response_transformer
+            .expect_transform_response()
+            .returning(Ok);
+        let mut answer_transformer = MockAnswer::new();
+        answer_transformer
+            .expect_answer()
+            .returning(|query| Ok(query.answered("OK")));
+
+        let pipeline = Pipeline::default()
+            .then_transform_query(Box::new(query_transformer) as Box<dyn TransformQuery>)
+            .then_retrieve(
+                |_: &search_strategies::SimilaritySingleEmbedding,
+                 query: Query<states::Pending>| {
+                    Ok(query.retrieved_documents(vec![]))
+                },
+            )
+            .then_transform_response(Box::new(response_transformer) as Box<dyn TransformResponse>)
+            .then_answer(Box::new(answer_transformer) as Box<dyn Answer>);
+        let response = pipeline.query("What").await.unwrap();
+        assert_eq!(response.answer(), "OK");
+    }
 }