diff --git a/spec/fabricators/custom_emoji_category_fabricator.rb b/spec/fabricators/custom_emoji_category_fabricator.rb
new file mode 100644
index 000000000..af41c9722
--- /dev/null
+++ b/spec/fabricators/custom_emoji_category_fabricator.rb
@@ -0,0 +1,5 @@
+# frozen_string_literal: true
+
+Fabricator(:custom_emoji_category) do
+  name { sequence(:name) { |i| "name_#{i}" } }
+end
diff --git a/spec/models/form/custom_emoji_batch_spec.rb b/spec/models/form/custom_emoji_batch_spec.rb
new file mode 100644
index 000000000..abeada5d5
--- /dev/null
+++ b/spec/models/form/custom_emoji_batch_spec.rb
@@ -0,0 +1,118 @@
+# frozen_string_literal: true
+
+require 'rails_helper'
+
+describe Form::CustomEmojiBatch do
+  describe '#save' do
+    subject { described_class.new({ current_account: account }.merge(options)) }
+
+    let(:options) { {} }
+    let(:account) { Fabricate(:user, role: UserRole.find_by(name: 'Admin')).account }
+
+    context 'with empty custom_emoji_ids' do
+      let(:options) { { custom_emoji_ids: [] } }
+
+      it 'does nothing if custom_emoji_ids is empty' do
+        expect(subject.save).to be_nil
+      end
+    end
+
+    describe 'the update action' do
+      let(:custom_emoji) { Fabricate(:custom_emoji, category: Fabricate(:custom_emoji_category)) }
+      let(:custom_emoji_category) { Fabricate(:custom_emoji_category) }
+
+      context 'without anything to change' do
+        let(:options) { { action: 'update' } }
+
+        it 'silently exits without updating any custom emojis' do
+          expect { subject.save }.to_not change(Admin::ActionLog, :count)
+        end
+      end
+
+      context 'with a category_id' do
+        let(:options) { { action: 'update', custom_emoji_ids: [custom_emoji.id], category_id: custom_emoji_category.id } }
+
+        it 'updates the category of the emoji' do
+          subject.save
+
+          expect(custom_emoji.reload.category).to eq(custom_emoji_category)
+        end
+      end
+
+      context 'with a category_name' do
+        let(:options) { { action: 'update', custom_emoji_ids: [custom_emoji.id], category_name: custom_emoji_category.name } }
+
+        it 'updates the category of the emoji' do
+          subject.save
+
+          expect(custom_emoji.reload.category).to eq(custom_emoji_category)
+        end
+      end
+    end
+
+    describe 'the list action' do
+      let(:custom_emoji) { Fabricate(:custom_emoji, visible_in_picker: false) }
+      let(:options) { { action: 'list', custom_emoji_ids: [custom_emoji.id] } }
+
+      it 'updates the picker visibility of the emoji' do
+        subject.save
+
+        expect(custom_emoji.reload.visible_in_picker).to be(true)
+      end
+    end
+
+    describe 'the unlist action' do
+      let(:custom_emoji) { Fabricate(:custom_emoji, visible_in_picker: true) }
+      let(:options) { { action: 'unlist', custom_emoji_ids: [custom_emoji.id] } }
+
+      it 'updates the picker visibility of the emoji' do
+        subject.save
+
+        expect(custom_emoji.reload.visible_in_picker).to be(false)
+      end
+    end
+
+    describe 'the enable action' do
+      let(:custom_emoji) { Fabricate(:custom_emoji, disabled: true) }
+      let(:options) { { action: 'enable', custom_emoji_ids: [custom_emoji.id] } }
+
+      it 'updates the disabled value of the emoji' do
+        subject.save
+
+        expect(custom_emoji.reload).to_not be_disabled
+      end
+    end
+
+    describe 'the disable action' do
+      let(:custom_emoji) { Fabricate(:custom_emoji, visible_in_picker: false) }
+      let(:options) { { action: 'disable', custom_emoji_ids: [custom_emoji.id] } }
+
+      it 'updates the disabled value of the emoji' do
+        subject.save
+
+        expect(custom_emoji.reload).to be_disabled
+      end
+    end
+
+    describe 'the copy action' do
+      let(:custom_emoji) { Fabricate(:custom_emoji) }
+      let(:options) { { action: 'copy', custom_emoji_ids: [custom_emoji.id] } }
+
+      it 'makes a copy of the emoji' do
+        expect { subject.save }
+          .to change(CustomEmoji, :count).by(1)
+      end
+    end
+
+    describe 'the delete action' do
+      let(:custom_emoji) { Fabricate(:custom_emoji) }
+      let(:options) { { action: 'delete', custom_emoji_ids: [custom_emoji.id] } }
+
+      it 'destroys the emoji' do
+        subject.save
+
+        expect { custom_emoji.reload }.to raise_error(ActiveRecord::RecordNotFound)
+      end
+    end
+  end
+end