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Testing Database Table Operations in PgHero

This test suite validates core table functionality in PgHero, focusing on database table metrics and caching mechanisms. The tests verify essential table operations including hit rates, caching effectiveness, unused table detection, and statistical analysis.

Test Coverage Overview

The test suite provides comprehensive coverage of PgHero’s table management capabilities.

Key areas tested include:

Table hit rate calculation and verification
Table caching mechanism validation
Unused table detection functionality
Table statistics gathering and reporting

The suite ensures basic functionality while validating core database operations.

Implementation Analysis

The implementation uses Minitest’s assertion-based testing approach with focused unit tests for each table operation. Each test method validates a specific database table functionality using straightforward assertions, following Ruby’s testing conventions.

The testing pattern emphasizes individual method verification with direct database interaction calls.

Technical Details

Testing infrastructure includes:

Minitest as the testing framework
Custom test helper integration
Database connection management
Assert-based validation methods

Configuration relies on a test helper file for common setup and database connectivity.

Best Practices Demonstrated

The test suite exemplifies several testing best practices for database operations.

Notable practices include:

Single responsibility principle in test methods
Clear test naming conventions
Isolated test cases for each table operation
Consistent assertion patterns
Modular test organization

ankane/pghero

test/tables_test.rb

            
require_relative "test_helper"

class TablesTest < Minitest::Test
  def test_table_hit_rate
    database.table_hit_rate
    assert true
  end

  def test_table_caching
    assert database.table_caching
  end

  def test_unused_tables
    assert database.unused_tables
  end

  def test_table_stats
    assert database.table_stats
  end
end