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Testing PostgreSQL Connection Management Implementation in PgHero

This test suite validates the PostgreSQL connection management functionality in PgHero, focusing on core connection handling capabilities and state tracking. The tests verify essential connection-related methods including connections listing, total count, state management, and source tracking.

Test Coverage Overview

The test suite provides comprehensive coverage of PgHero’s connection management functionality. It validates four critical aspects of database connections:

Connection list retrieval and array formatting
Total connection count calculation
Connection state tracking and hash storage
Connection source identification and listing

Implementation Analysis

The testing approach employs Minitest’s assertion framework to verify PostgreSQL connection management features. Each test method focuses on validating specific return types and data structures, ensuring proper implementation of connection-related functionality.

The suite uses type-checking assertions to verify data structure integrity, following Ruby’s standard testing patterns.

Technical Details

Testing Infrastructure:

Framework: Minitest
Test Helper Integration: Custom test_helper.rb
Database Interface: PgHero database wrapper
Assertion Types: kind_of for type checking

Best Practices Demonstrated

The test suite exemplifies clean testing practices with focused, atomic test methods. Each test validates a single connection management aspect, maintaining clear separation of concerns.

Single responsibility principle in test methods
Consistent naming conventions
Type-safety verification
Modular test organization

ankane/pghero

test/connections_test.rb

            
require_relative "test_helper"

class ConnectionsTest < Minitest::Test
  def test_connections
    assert_kind_of Array, database.connections
  end

  def test_total_connections
    assert_kind_of Integer, database.total_connections
  end

  def test_connection_states
    assert_kind_of Hash, database.connection_states
  end

  def test_connection_sources
    assert_kind_of Array, database.connection_sources
  end
end