Initial commit

spec/lib/duplicate_remover_spec.rb

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+require 'rails_helper'
+require 'duplicate_remover'
+
+describe DuplicateRemover do
+  before(:all) do
+    Temping.create :person do
+      validates :name, uniqueness: true
+
+      with_columns do |t|
+        t.string :name
+      end
+    end
+  end
+  
+  after(:all) do
+    Temping.teardown
+  end
+
+  context 'when record attribute is unique' do
+    it 'does not update the record' do
+      person = create_person("Jane")
+
+      DuplicateRemover.new(person, :name).perform!
+
+      expect(person.name).to eq("Jane")
+    end
+  end
+
+  context 'when record attribute is a duplicate' do
+    it 'updates the record with a unique name' do
+      create_person("Jane")
+      person = create_person("Jane")
+
+      DuplicateRemover.new(person, :name).perform!
+
+      expect(person.name).to eq("Jane (2)")
+    end
+  end
+
+  context 'when record attribute is a duplicate multiple times' do
+    it 'updates the record with a unique name' do
+      create_person("Jane")
+      create_person("Jane (2)")
+      create_person("Jane (3)")
+      person = create_person("Jane")
+
+      DuplicateRemover.new(person, :name).perform!
+
+      expect(person.name).to eq("Jane (4)")
+    end
+  end
+
+  private
+
+  def create_person(name)
+    Person.new(name: name) do |person|
+      person.save(validate: false)
+    end
+  end
+end