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Testing Export Formatter Validation in ddollar/foreman

This test suite evaluates the export functionality in Foreman, focusing on formatter validation and error handling. It verifies how the system responds to invalid formatter scenarios and ensures proper error messaging when incorrect export formats are specified.

Test Coverage Overview

The test suite provides comprehensive coverage of Foreman’s export formatter validation mechanisms.

Key areas tested include:

Invalid formatter class declarations
Non-existent formatter handling
Error message accuracy for different failure scenarios

Integration points focus on the formatter loading system and error reporting infrastructure.

Implementation Analysis

The testing approach utilizes RSpec’s behavior-driven development patterns to validate export formatter functionality. The implementation leverages mock expectations to verify error handling paths and proper class loading behavior.

Technical patterns include:

Subject-based testing structure
Expectation mocking for file requirements
Error message validation

Technical Details

Testing tools and configuration:

RSpec testing framework
Mock helpers for export error simulation
Custom formatter validation methods
Spec helper integration for common setup

Best Practices Demonstrated

The test suite exemplifies several testing best practices for Ruby applications. It demonstrates effective use of RSpec’s subject syntax, proper error scenario coverage, and isolated test cases.

Notable practices include:

Descriptive context organization
Focused test scenarios
Clear error expectation handling
Modular test structure

ddollar/foreman

spec/foreman/export_spec.rb

            
require "spec_helper"
require "foreman/export"

describe "Foreman::Export" do
  subject { Foreman::Export }

  describe "with a formatter that doesn't declare the appropriate class" do
    it "prints an error" do
      expect(subject).to receive(:require).with("foreman/export/invalidformatter")
      mock_export_error("Unknown export format: invalidformatter (no class Foreman::Export::Invalidformatter).") do
        subject.formatter("invalidformatter") 
      end
    end
  end

  describe "with an invalid formatter" do

    it "prints an error" do
      mock_export_error("Unknown export format: invalidformatter (unable to load file 'foreman/export/invalidformatter').") do
        subject.formatter("invalidformatter")
      end
    end
  end
end