diff --git a/spec/factories/classifications.rb b/spec/factories/classifications.rb
index d2fde4b9e..d75d90d3e 100644
--- a/spec/factories/classifications.rb
+++ b/spec/factories/classifications.rb
@@ -38,5 +38,13 @@ FactoryBot.define do
   end
 
   factory :related_content do
+    association :author, factory: :user
+    association :parent_relationable, factory: [:proposal, :debate].sample
+    association :child_relationable, factory: [:proposal, :debate].sample
+  end
+
+  factory :related_content_score do
+    association :user
+    association :related_content
   end
 end
diff --git a/spec/models/related_content_score_spec.rb b/spec/models/related_content_score_spec.rb
new file mode 100644
index 000000000..8e84b2a7f
--- /dev/null
+++ b/spec/models/related_content_score_spec.rb
@@ -0,0 +1,23 @@
+require "rails_helper"
+
+describe RelatedContentScore do
+  it "is valid" do
+    expect(build(:related_content_score)).to be_valid
+  end
+
+  it "is not valid with empty user or empty related_content" do
+    expect(build(:related_content_score, user: nil)).not_to be_valid
+    expect(build(:related_content_score, related_content: nil)).not_to be_valid
+  end
+
+  it "is not valid with repeated related content scores" do
+    user = create(:user)
+    related_content = build(:related_content)
+
+    create(:related_content_score, related_content: related_content, user: user)
+
+    new_score = build(:related_content_score, related_content: related_content, user: user)
+
+    expect(new_score).not_to be_valid
+  end
+end
diff --git a/spec/models/related_content_spec.rb b/spec/models/related_content_spec.rb
index e0ddefc01..5ed206ef0 100644
--- a/spec/models/related_content_spec.rb
+++ b/spec/models/related_content_spec.rb
@@ -5,6 +5,10 @@ describe RelatedContent do
   let(:parent_relationable) { create([:proposal, :debate].sample) }
   let(:child_relationable) { create([:proposal, :debate].sample) }
 
+  it "is valid" do
+    expect(build(:related_content)).to be_valid
+  end
+
   it "allows relationables from various classes" do
     expect(build(:related_content, parent_relationable: parent_relationable, child_relationable: child_relationable)).to be_valid
     expect(build(:related_content, parent_relationable: parent_relationable, child_relationable: child_relationable)).to be_valid
@@ -12,9 +16,8 @@ describe RelatedContent do
   end
 
   it "does not allow empty relationables" do
-    expect(build(:related_content)).not_to be_valid
-    expect(build(:related_content, parent_relationable: parent_relationable)).not_to be_valid
-    expect(build(:related_content, child_relationable: child_relationable)).not_to be_valid
+    expect(build(:related_content, parent_relationable: nil)).not_to be_valid
+    expect(build(:related_content, child_relationable: nil)).not_to be_valid
   end
 
   it "does not allow repeated related contents" do