diff --git a/app/components/matey/active_users_component.rb b/app/components/matey/active_users_component.rb
index 6477594..a773d71 100644
--- a/app/components/matey/active_users_component.rb
+++ b/app/components/matey/active_users_component.rb
@@ -2,8 +2,7 @@
 
 class Matey::ActiveUsersComponent < Matey::ApplicationComponent
   def initialize(events:, time_window: 1.week, color_scheme: "neutral")
-    raise ArgumentError unless events.is_a?(ActiveRecord::Relation)
-    raise ArgumentError unless time_window.is_a?(Integer)
+    super(records: events, time_window: time_window)
 
     @current_period = events.where(time: time_window.ago..Time.current).pluck(:user_id).uniq.count
     previous_period = events.where(time: (2 * time_window).ago..time_window.ago).pluck(:user_id).uniq.count
diff --git a/app/components/matey/application_component.rb b/app/components/matey/application_component.rb
index de90959..b900bee 100644
--- a/app/components/matey/application_component.rb
+++ b/app/components/matey/application_component.rb
@@ -6,6 +6,12 @@ class Matey::ApplicationComponent < ViewComponent::Base
   include ActiveModel::Validations
   include ColorSchemeHelper
 
+  def initialize(records:, time_window:)
+    super
+    raise ArgumentError unless records.is_a?(ActiveRecord::Relation)
+    raise ArgumentError unless time_window.is_a?(Integer)
+  end
+
   def before_render
     validate!
   end
diff --git a/app/components/matey/browser_os_breakdown_component.rb b/app/components/matey/browser_os_breakdown_component.rb
index bc3d856..b8d3bf6 100644
--- a/app/components/matey/browser_os_breakdown_component.rb
+++ b/app/components/matey/browser_os_breakdown_component.rb
@@ -1,5 +1,7 @@
 class Matey::BrowserOsBreakdownComponent < Matey::ApplicationComponent
   def initialize(visits:, time_window:, color_scheme: "neutral")
+    super(records: visits, time_window: time_window)
+
     visits_in_time_window = visits.where(started_at: time_window.ago..)
     @visits_in_time_window = visits_in_time_window.count
     @browsers = visits_in_time_window.group(:browser).count
diff --git a/app/components/matey/daily_active_users_component.rb b/app/components/matey/daily_active_users_component.rb
index 8bcbbcb..0c58975 100644
--- a/app/components/matey/daily_active_users_component.rb
+++ b/app/components/matey/daily_active_users_component.rb
@@ -1,5 +1,7 @@
 class Matey::DailyActiveUsersComponent < Matey::ApplicationComponent
   def initialize(visits:, time_window:, color_scheme: "neutral")
+    super(records: visits, time_window: time_window)
+
     @visits = visits
     @time_window = time_window
     visits_in_time_window = visits.where(started_at: time_window.ago..)
diff --git a/app/components/matey/new_activity_component.rb b/app/components/matey/new_activity_component.rb
index e2a3e56..88ca3f4 100644
--- a/app/components/matey/new_activity_component.rb
+++ b/app/components/matey/new_activity_component.rb
@@ -1,7 +1,6 @@
 class Matey::NewActivityComponent < Matey::ApplicationComponent
   def initialize(events:, time_window: 1.week, color_scheme: "neutral")
-    raise ArgumentError unless events.is_a?(ActiveRecord::Relation)
-    raise ArgumentError unless time_window.is_a?(Integer)
+    super(records: events, time_window: time_window)
 
     @current_period = events.where(time: time_window.ago..Time.current).count
     previous_period = events.where(time: (2 * time_window).ago..time_window.ago).pluck(:user_id).count
diff --git a/app/components/matey/new_users_component.rb b/app/components/matey/new_users_component.rb
index 44ae75d..04f3fc2 100644
--- a/app/components/matey/new_users_component.rb
+++ b/app/components/matey/new_users_component.rb
@@ -1,5 +1,7 @@
 class Matey::NewUsersComponent < Matey::ApplicationComponent
   def initialize(users:, time_window: 1.week, color_scheme: "neutral")
+    super(records: users, time_window: time_window)
+
     @current_period = users.where(created_at: time_window.ago..Time.current).count
     previous_period = users.where(created_at: (2 * time_window).ago..time_window.ago).count
 
diff --git a/app/components/matey/top_events_component.rb b/app/components/matey/top_events_component.rb
index 097915d..29a3d5e 100644
--- a/app/components/matey/top_events_component.rb
+++ b/app/components/matey/top_events_component.rb
@@ -2,8 +2,7 @@
 
 class Matey::TopEventsComponent < Matey::ApplicationComponent
   def initialize(events:, time_window: 1.week, limit: 5, color_scheme: "neutral")
-    raise ArgumentError unless events.is_a?(ActiveRecord::Relation)
-    raise ArgumentError unless time_window.is_a?(Integer)
+    super(records: events, time_window: time_window)
 
     @events = events.where(time: time_window.ago..Time.current).limit(limit).order("count(name) DESC").group(:name).count
     @time_window = time_window
diff --git a/app/components/matey/top_visited_pages_table_component.rb b/app/components/matey/top_visited_pages_table_component.rb
index 3d12482..fb0af0c 100644
--- a/app/components/matey/top_visited_pages_table_component.rb
+++ b/app/components/matey/top_visited_pages_table_component.rb
@@ -1,5 +1,7 @@
 class Matey::TopVisitedPagesTableComponent < Matey::ApplicationComponent
   def initialize(events:, time_window: 1.week, limit: 10, color_scheme: "neutral")
+    super(records: events, time_window: time_window)
+
     # Group events by controller (:name) and action. Aggregate number of unique user actions
     @user_count_by_event = events.where(started_at: time_window.ago..).pluck(:landing_page).tally
 
diff --git a/app/components/matey/user_engagement_component.rb b/app/components/matey/user_engagement_component.rb
index f2f8e3f..5b7a8ad 100644
--- a/app/components/matey/user_engagement_component.rb
+++ b/app/components/matey/user_engagement_component.rb
@@ -2,6 +2,8 @@
 
 class Matey::UserEngagementComponent < Matey::ApplicationComponent
   def initialize(events:, user_id:, time_window: 1.week, limit: 10, color_scheme: "neutral")
+    super(records: events, time_window: time_window)
+
     @events_for_user = events.where_props(user_id: user_id).where(time: time_window.ago..Time.current).group(:name).count
     @count_by_event = @events_for_user.sort_by { |event, count| count }.last(limit).reverse
     @time_window = time_window
diff --git a/app/components/matey/visits_by_day_of_week_component.rb b/app/components/matey/visits_by_day_of_week_component.rb
index f92db79..2c04883 100644
--- a/app/components/matey/visits_by_day_of_week_component.rb
+++ b/app/components/matey/visits_by_day_of_week_component.rb
@@ -3,6 +3,8 @@
 
 class Matey::VisitsByDayOfWeekComponent < Matey::ApplicationComponent
   def initialize(visits:, time_window: 1.month, exclude_days: [], color_scheme: "neutral")
+    super(records: visits, time_window: time_window)
+
     @visits = visits
     @time_window = time_window
     @exclude_days = exclude_days
diff --git a/spec/matey/bounce_rate_component_spec.rb b/spec/matey/bounce_rate_component_spec.rb
new file mode 100644
index 0000000..a81261e
--- /dev/null
+++ b/spec/matey/bounce_rate_component_spec.rb
@@ -0,0 +1,28 @@
+# frozen_string_literal: true
+
+require "spec_helper"
+
+RSpec.describe Matey::BounceRateComponent, type: :component do
+  context "renders component" do
+    let(:color_scheme) { "bg-light text-dark border-dark" }
+    it "with a card element" do
+      subject = render_inline(Matey::BounceRateComponent.new(events: Ahoy::Event.all, visits: Ahoy::Visit.all))
+
+      expect(subject.css("div[class='card #{color_scheme}']").to_html).not_to be_empty
+    end
+  end
+
+  context "raises an exception when" do
+    it "events are missing" do
+      expect { Matey::BounceRateComponent.new }.to raise_error(ArgumentError)
+    end
+
+    it "events are invalid" do
+      expect { Matey::BounceRateComponent.new(events: nil) }.to raise_error(ArgumentError)
+    end
+
+    it "time_window is invalid" do
+      expect { Matey::BounceRateComponent.new(events: [], time_window: nil) }.to raise_error(ArgumentError)
+    end
+  end
+end
diff --git a/spec/matey/browser_os_breakdown_component_spec.rb b/spec/matey/browser_os_breakdown_component_spec.rb
new file mode 100644
index 0000000..5f5a65f
--- /dev/null
+++ b/spec/matey/browser_os_breakdown_component_spec.rb
@@ -0,0 +1,28 @@
+# frozen_string_literal: true
+
+require "spec_helper"
+
+RSpec.describe Matey::BrowserOsBreakdownComponent, type: :component do
+  context "renders component" do
+    let(:color_scheme) { "bg-light text-dark border-dark" }
+    it "with a card element" do
+      subject = render_inline(Matey::BrowserOsBreakdownComponent.new(visits: Ahoy::Visit.all, time_window: 1.week))
+
+      expect(subject.css("div[class='card #{color_scheme}']").to_html).not_to be_empty
+    end
+  end
+
+  context "raises an exception when" do
+    it "visits are missing" do
+      expect { Matey::BrowserOsBreakdownComponent.new }.to raise_error(ArgumentError)
+    end
+
+    it "visits are invalid" do
+      expect { Matey::BrowserOsBreakdownComponent.new(visits: nil) }.to raise_error(ArgumentError)
+    end
+
+    it "time_window is invalid" do
+      expect { Matey::BrowserOsBreakdownComponent.new(visits: [], time_window: nil) }.to raise_error(ArgumentError)
+    end
+  end
+end
diff --git a/spec/matey/daily_active_users_component_spec.rb b/spec/matey/daily_active_users_component_spec.rb
new file mode 100644
index 0000000..bb5c35b
--- /dev/null
+++ b/spec/matey/daily_active_users_component_spec.rb
@@ -0,0 +1,28 @@
+# frozen_string_literal: true
+
+require "spec_helper"
+
+RSpec.describe Matey::DailyActiveUsersComponent, type: :component do
+  context "renders component" do
+    let(:color_scheme) { "bg-light text-dark border-dark" }
+    it "with a card element" do
+      subject = render_inline(Matey::DailyActiveUsersComponent.new(visits: Ahoy::Visit.all, time_window: 1.month))
+
+      expect(subject.css("div[class='card #{color_scheme}']").to_html).not_to be_empty
+    end
+  end
+
+  context "raises an exception when" do
+    it "visits are missing" do
+      expect { Matey::DailyActiveUsersComponent.new }.to raise_error(ArgumentError)
+    end
+
+    it "visits are invalid" do
+      expect { Matey::DailyActiveUsersComponent.new(visits: nil) }.to raise_error(ArgumentError)
+    end
+
+    it "time_window is invalid" do
+      expect { Matey::DailyActiveUsersComponent.new(visits: [], time_window: nil) }.to raise_error(ArgumentError)
+    end
+  end
+end
diff --git a/spec/matey/new_activity_component_spec.rb b/spec/matey/new_activity_component_spec.rb
new file mode 100644
index 0000000..273c5e0
--- /dev/null
+++ b/spec/matey/new_activity_component_spec.rb
@@ -0,0 +1,28 @@
+# frozen_string_literal: true
+
+require "spec_helper"
+
+RSpec.describe Matey::NewActivityComponent, type: :component do
+  context "when ahoy events are present" do
+    let(:color_scheme) { "bg-light text-dark border-dark" }
+    it "renders the card element" do
+      subject = render_inline(Matey::NewActivityComponent.new(events: Ahoy::Event.all))
+
+      expect(subject.css("div[class='card #{color_scheme}']").to_html).not_to be_empty
+    end
+  end
+
+  context "raises an exception when" do
+    it "events are missing" do
+      expect { Matey::NewActivityComponent.new }.to raise_error(ArgumentError)
+    end
+
+    it "events are invalid" do
+      expect { Matey::NewActivityComponent.new(events: nil) }.to raise_error(ArgumentError)
+    end
+
+    it "time_window is invalid" do
+      expect { Matey::NewActivityComponent.new(events: [], time_window: nil) }.to raise_error(ArgumentError)
+    end
+  end
+end
diff --git a/spec/matey/new_users_component_spec.rb b/spec/matey/new_users_component_spec.rb
new file mode 100644
index 0000000..c9904f4
--- /dev/null
+++ b/spec/matey/new_users_component_spec.rb
@@ -0,0 +1,28 @@
+# frozen_string_literal: true
+
+require "spec_helper"
+
+RSpec.describe Matey::NewUsersComponent, type: :component do
+  context "renders component" do
+    let(:color_scheme) { "bg-light text-dark border-dark" }
+    it "with a card element" do
+      subject = render_inline(Matey::NewUsersComponent.new(users: User.all))
+
+      expect(subject.css("div[class='card #{color_scheme}']").to_html).not_to be_empty
+    end
+  end
+
+  context "raises an exception when" do
+    it "users are missing" do
+      expect { Matey::NewUsersComponent.new }.to raise_error(ArgumentError)
+    end
+
+    it "users are invalid" do
+      expect { Matey::NewUsersComponent.new(users: nil) }.to raise_error(ArgumentError)
+    end
+
+    it "time_window is invalid" do
+      expect { Matey::NewUsersComponent.new(users: [], time_window: nil) }.to raise_error(ArgumentError)
+    end
+  end
+end
diff --git a/spec/matey/top_visited_pages_table_component_spec.rb b/spec/matey/top_visited_pages_table_component_spec.rb
new file mode 100644
index 0000000..fc1a07c
--- /dev/null
+++ b/spec/matey/top_visited_pages_table_component_spec.rb
@@ -0,0 +1,28 @@
+# frozen_string_literal: true
+
+require "rails_helper"
+
+RSpec.describe Matey::TopVisitedPagesTableComponent, type: :component do
+  context "renders component" do
+    let(:color_scheme) { "bg-light text-dark border-dark" }
+    it "with a card element" do
+      subject = render_inline(Matey::TopVisitedPagesTableComponent.new(events: Ahoy::Visit.all))
+
+      expect(subject.css("div[class='card #{color_scheme}']").to_html).not_to be_empty
+    end
+  end
+
+  context "raises an exception when" do
+    it "events are missing" do
+      expect { Matey::TopVisitedPagesTableComponent.new }.to raise_error(ArgumentError)
+    end
+
+    it "events are invalid" do
+      expect { Matey::TopVisitedPagesTableComponent.new(events: nil) }.to raise_error(ArgumentError)
+    end
+
+    it "time_window is invalid" do
+      expect { Matey::TopVisitedPagesTableComponent.new(events: [], time_window: nil) }.to raise_error(ArgumentError)
+    end
+  end
+end
diff --git a/spec/matey/user_engagement_component_spec.rb b/spec/matey/user_engagement_component_spec.rb
new file mode 100644
index 0000000..b25cc55
--- /dev/null
+++ b/spec/matey/user_engagement_component_spec.rb
@@ -0,0 +1,29 @@
+# frozen_string_literal: true
+
+require "spec_helper"
+
+RSpec.describe Matey::UserEngagementComponent, type: :component do
+  context "when ahoy events are present" do
+    let(:user) { create(:user) }
+    let(:color_scheme) { "bg-light text-dark border-dark" }
+    it "renders the card element" do
+      subject = render_inline(Matey::UserEngagementComponent.new(events: Ahoy::Event.all, user_id: user.id))
+
+      expect(subject.css("div[class='card #{color_scheme}']").to_html).not_to be_empty
+    end
+  end
+
+  context "raises an exception when" do
+    it "events are missing" do
+      expect { Matey::UserEngagementComponent.new }.to raise_error(ArgumentError)
+    end
+
+    it "events are invalid" do
+      expect { Matey::UserEngagementComponent.new(events: nil) }.to raise_error(ArgumentError)
+    end
+
+    it "time_window is invalid" do
+      expect { Matey::UserEngagementComponent.new(events: [], time_window: nil) }.to raise_error(ArgumentError)
+    end
+  end
+end
diff --git a/spec/matey/visits_by_day_of_week_component_spec.rb b/spec/matey/visits_by_day_of_week_component_spec.rb
new file mode 100644
index 0000000..b6689d4
--- /dev/null
+++ b/spec/matey/visits_by_day_of_week_component_spec.rb
@@ -0,0 +1,28 @@
+# frozen_string_literal: true
+
+require "spec_helper"
+
+RSpec.describe Matey::VisitsByDayOfWeekComponent, type: :component do
+  context "when ahoy visits are present" do
+    let(:color_scheme) { "bg-light text-dark border-dark" }
+    it "renders the card element" do
+      subject = render_inline(Matey::VisitsByDayOfWeekComponent.new(visits: Ahoy::Visit.all, exclude_days: ["Monday", "Tuesday"]))
+
+      expect(subject.css("div[class='card #{color_scheme}']").to_html).not_to be_empty
+    end
+  end
+
+  context "raises an exception when" do
+    it "visits are missing" do
+      expect { Matey::VisitsByDayOfWeekComponent.new }.to raise_error(ArgumentError)
+    end
+
+    it "visits are invalid" do
+      expect { Matey::VisitsByDayOfWeekComponent.new(visits: nil) }.to raise_error(ArgumentError)
+    end
+
+    it "time_window is invalid" do
+      expect { Matey::VisitsByDayOfWeekComponent.new(visits: [], time_window: nil) }.to raise_error(ArgumentError)
+    end
+  end
+end