diff --git a/spec/models/arabic_transliteration_spec.rb b/spec/models/arabic_transliteration_spec.rb
new file mode 100644
index 00000000..5ea58207
--- /dev/null
+++ b/spec/models/arabic_transliteration_spec.rb
@@ -0,0 +1,9 @@
+# frozen_string_literal: true
+
+require 'rails_helper'
+
+RSpec.describe ArabicTransliteration, type: :model do
+  describe 'associations' do
+    it { is_expected.to belong_to(:word) }
+  end
+end
diff --git a/spec/models/author_spec.rb b/spec/models/author_spec.rb
index a98590f6..29474b69 100644
--- a/spec/models/author_spec.rb
+++ b/spec/models/author_spec.rb
@@ -18,9 +18,15 @@
   context 'with associations' do
     it { is_expected.to have_many(:translated_names) }
     it { is_expected.to have_many(:resource_contents) }
+
+    it { is_expected.to have_one(:translated_name) }
   end
 
   context 'with columns and indexes' do
     it_behaves_like 'modal with column', name: :string, url: :string
   end
+
+  context 'with modules' do
+    it { is_expected.to include_module(NameTranslateable) }
+  end
 end
diff --git a/spec/models/chapter_info_spec.rb b/spec/models/chapter_info_spec.rb
index d43d2c27..f6027232 100644
--- a/spec/models/chapter_info_spec.rb
+++ b/spec/models/chapter_info_spec.rb
@@ -25,6 +25,11 @@
 require 'rails_helper'
 
 RSpec.describe ChapterInfo do
+  describe 'modules' do
+    it { is_expected.to include_module(LanguageFilterable) }
+    it { is_expected.to include_module(Resourceable) }
+  end
+
   context 'with associations' do
     it { is_expected.to belong_to :language }
     it { is_expected.to belong_to :chapter }
diff --git a/spec/models/chapter_spec.rb b/spec/models/chapter_spec.rb
index f7b0f76e..927bbcab 100644
--- a/spec/models/chapter_spec.rb
+++ b/spec/models/chapter_spec.rb
@@ -29,10 +29,13 @@
 
 RSpec.describe Chapter do
   context 'with associations and scopes' do
-    it { is_expected.to have_many :verses }
-    it { is_expected.to have_many :translated_names }
     it { is_expected.to have_many :chapter_infos }
+    it { is_expected.to have_many :navigation_search_records }
     it { is_expected.to have_many :slugs }
+    it { is_expected.to have_many :translated_names }
+    it { is_expected.to have_many :verses }
+
+    it { is_expected.to have_one(:default_slug).class_name('Slug') }
     it { is_expected.to have_one :translated_name }
 
     it { is_expected.to serialize :pages }
@@ -59,4 +62,10 @@
     it_behaves_like 'modal with column', columns
     it_behaves_like 'modal have indexes on column', ['chapter_number']
   end
+
+  context 'with modules' do
+    [NameTranslateable, QuranNavigationSearchable, Slugable].each do |module_name|
+      it { is_expected.to include_module module_name }
+    end
+  end
 end
diff --git a/spec/models/char_type_spec.rb b/spec/models/char_type_spec.rb
index 2ee5ccb0..05cd3b43 100644
--- a/spec/models/char_type_spec.rb
+++ b/spec/models/char_type_spec.rb
@@ -20,14 +20,9 @@
 
 RSpec.describe CharType do
   context 'with associations' do
-    it { expect(subject).to belong_to(:parent)
-                          .class_name('CharType')
-    }
+    it { is_expected.to belong_to(:parent).class_name('CharType') }
 
-    it { expect(subject).to have_many(:children)
-                          .class_name('CharType')
-                          .with_foreign_key('parent_id')
-    }
+    it { is_expected.to have_many(:children).class_name('CharType').with_foreign_key('parent_id') }
   end
 
   context 'with columns and indexes' do
diff --git a/spec/models/data_source_spec.rb b/spec/models/data_source_spec.rb
index e6ff1b84..7dcafd41 100644
--- a/spec/models/data_source_spec.rb
+++ b/spec/models/data_source_spec.rb
@@ -15,7 +15,7 @@
 
 RSpec.describe DataSource do
   context 'with associations' do
-   it { should have_many(:resource_contents) }
+   it { is_expected.to have_many(:resource_contents) }
  end
 
   context 'columns and indexes' do
diff --git a/spec/models/foot_note_spec.rb b/spec/models/foot_note_spec.rb
index 16fcbdfd..2a817245 100644
--- a/spec/models/foot_note_spec.rb
+++ b/spec/models/foot_note_spec.rb
@@ -24,7 +24,6 @@
 
 RSpec.describe FootNote do
   context 'with associations' do
-    it { is_expected.to belong_to :resource }
     it { is_expected.to belong_to :language }
     it { is_expected.to belong_to :resource_content }
   end
@@ -42,7 +41,7 @@
     indexes = [
       ['language_id'],
       ['resource_content_id'],
-      ['resource_type', 'resource_id']
+      %w[resource_type resource_id]
     ]
 
     it_behaves_like 'modal with column', columns
diff --git a/spec/support/matchers/include_module.rb b/spec/support/matchers/include_module.rb
new file mode 100644
index 00000000..fc7ed122
--- /dev/null
+++ b/spec/support/matchers/include_module.rb
@@ -0,0 +1,27 @@
+# Define a custom RSpec matcher called `include_module`.
+# This matcher checks if a model includes a specified module.
+RSpec::Matchers.define :include_module do |expected_module|
+  match do |model|
+    # @param expected_module [Module] The module that should be included in the model.
+    # @return [Boolean] True if the model's ancestors include the expected module, false otherwise.
+    model.class.included_modules.include?(expected_module)
+  end
+
+  # Failure message when the matcher fails.
+  failure_message do |model|
+    # @return [String] The failure message to be displayed if the model does not include the expected module.
+    "expected #{model.class} to include the module #{expected_module}"
+  end
+
+  # Failure message when the matcher is negated.
+  failure_message_when_negated do |model|
+    # @return [String] The failure message to be displayed if the model includes the module unexpectedly.
+    "expected #{model.class} not to include the module #{expected_module}"
+  end
+
+  # Provide a description of the matcher for documentation or output.
+  description do
+    # @return [String] A description of the matcher.
+    "include the module #{expected_module}"
+  end
+end