diff --git a/test/test_chunks_write.rb b/test/test_chunks_write.rb
index a7988d40b..4f0a86762 100644
--- a/test/test_chunks_write.rb
+++ b/test/test_chunks_write.rb
@@ -71,7 +71,6 @@ def test_put_delete_data
     end
 
     def test_reentrant_queries
-      skip "TODO: why does this test fail?"
       ntriples_file_path = "./test/data/nemo_ontology.ntriples"
 
       # Bypass in chunks
@@ -87,8 +86,8 @@ def test_reentrant_queries
 
       tput = Thread.new {
         Goo.sparql_data_client.put_triples(ONT_ID_EXTRA, ntriples_file_path, mime_type="application/x-turtle")
+        sleep(1.5)
       }
-      sleep(1.5)
       count_queries = 0
       tq = Thread.new {
        5.times do
@@ -112,8 +111,8 @@ def test_reentrant_queries
 
       tdelete = Thread.new {
         Goo.sparql_data_client.delete_graph(ONT_ID_EXTRA)
+        sleep(1.5)
       }
-      sleep(1.5)
       count_queries = 0
       tq = Thread.new {
        5.times do
diff --git a/test/test_collections.rb b/test/test_collections.rb
index 390ad349c..2177c6690 100644
--- a/test/test_collections.rb
+++ b/test/test_collections.rb
@@ -91,18 +91,18 @@ def test_unique_per_collection
   def test_inverse_on_collection
     skip "Not supported inverse on collection"
 
-    john = User.find("John").include(:name).first || 
-      User.new(name: "John").save()
+    john = User.find("John").include(:name).first || User.new(name: "John").save
+
     5.times do |i|
-      Issue.new(description: "issue_#{i}", owner: john).save
+      Issue.find("issue_#{i}").in(john) || Issue.new(description: "issue_#{i}", owner: john).save
     end
-    
-    binding.pry
-    User.find("John",include: [:issues]).first.issues
-    User.find("John",include: [issues: [:desciption]]).first.issues
 
-    5.times do |i|
-      Issue.find("issue_#{i}", collection: john).delete
+    issues = User.find("John").include(:issues).first.issues
+    assert_equal 5, issues.size
+
+    issues.each do |issue|
+      assert_equal "issue_#{i}", issue.description
+      assert_equal john, issue.collection
     end
   end
 
diff --git a/test/test_read_only.rb b/test/test_read_only.rb
index 4496c463e..268f7c862 100644
--- a/test/test_read_only.rb
+++ b/test/test_read_only.rb
@@ -39,11 +39,17 @@ def test_struct_find
     end
 
     def test_embed_struct
-      skip "not yet"
+
       students = Student.where(enrolled: [university: [name: "Stanford"]])
                 .include(:name)
-                .include(enrolled: [:name, university: [ :address ]])
+                .include(enrolled: [:name, university: [ :address, :name ]])
                 .read_only.all
+
+      assert_equal 3, students.size
+      students.each do |st|
+        assert st.enrolled.any? {|e| e.is_a?(Struct) && e.university.name.eql?('Stanford')}
+      end
+
     end
   end
 end