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Testing Document Version Management in Paper Trail

This test suite validates the versioning functionality in the Document model using PaperTrail gem integration with RSpec. It focuses on version tracking, retrieval, and custom version associations to ensure proper document history management.

Test Coverage Overview

The test suite provides comprehensive coverage of PaperTrail’s versioning capabilities in the Document model.

Custom version association testing
Next and previous version retrieval validation
Version record creation verification
Association naming convention checks

Implementation Analysis

The testing approach employs RSpec’s describe/it blocks with focused test cases for each versioning feature. It utilizes PaperTrail’s versioning: true flag and custom paper_trail_versions association, demonstrating proper isolation of version tracking functionality.

The implementation leverages RSpec matchers and expectations to verify version creation, retrieval, and association behavior.

Technical Details

RSpec testing framework
PaperTrail gem integration
Custom version association configuration
Model-level versioning setup
Spec helper integration

Best Practices Demonstrated

The test suite exemplifies strong testing practices through isolated test cases, clear naming conventions, and comprehensive feature coverage.

Isolated test scenarios
Explicit version state verification
Clear test case organization
Proper setup and teardown management

paper-trail-gem/paper_trail

spec/models/document_spec.rb

            
# frozen_string_literal: true

require "spec_helper"

RSpec.describe Document, type: :model, versioning: true do
  describe "have_a_version_with matcher" do
    it "works with custom versions association" do
      document = described_class.create!(name: "Foo")
      document.update!(name: "Bar")
      expect(document).to have_a_version_with(name: "Foo")
    end
  end

  describe "#paper_trail.next_version" do
    it "returns the expected document" do
      doc = described_class.create
      doc.update(name: "Doc 1")
      reified = doc.paper_trail_versions.last.reify
      expect(doc.name).to(eq(reified.paper_trail.next_version.name))
    end
  end

  describe "#paper_trail.previous_version" do
    it "returns the expected document" do
      doc = described_class.create
      doc.update(name: "Doc 1")
      doc.update(name: "Doc 2")
      expect(doc.paper_trail_versions.length).to(eq(3))
      expect(doc.paper_trail.previous_version.name).to(eq("Doc 1"))
    end
  end

  describe "#paper_trail_versions" do
    it "returns the expected version records" do
      doc = described_class.create
      doc.update(name: "Doc 1")
      expect(doc.paper_trail_versions.length).to(eq(2))
      expect(doc.paper_trail_versions.map(&:event)).to(
        match_array(%w[create update])
      )
    end
  end

  describe "#versions" do
    it "does not respond to versions method" do
      doc = described_class.create
      doc.update(name: "Doc 1")
      expect(doc).not_to respond_to(:versions)
    end
  end
end