README

Architecture Overview

The refactored Unit Test library follows a modular architecture while maintaining full backward compatibility with CodeIgniter 3 API.

Legacy API (UnitTest.php)
    |
    v
Compatibility Facade
    |
    v
Unit Test Core
    |
    +--> Assertions (TypeAssertion, EqualsAssertion)
    +--> Result (TestResult, AssertionResult, TestResultCollection)
    +--> Runner (TestRunner)
    +--> Reporters (DefaultReporter)
    +--> Formatters (HtmlFormatter)
    +--> Support (ValueComparator, TypeResolver)
    +--> Registry (AssertionRegistry)
    +--> Contracts (Interfaces)
    +--> ValueObjects (TestStatus)
    +--> Exceptions

Folder Structure

test/
├── src/
│   ├── UnitTest.php                  # Main facade (legacy API compatible)
│   ├── Contracts/
│   │   ├── UnitTestInterface.php     # Main interface
│   │   ├── AssertionInterface.php    # Assertion contract
│   │   ├── ReporterInterface.php     # Reporter contract
│   │   └── FormatterInterface.php    # Formatter contract
│   ├── Assertions/
│   │   ├── EqualsAssertion.php       # Equality comparison
│   │   └── TypeAssertion.php         # Type checking functions
│   ├── Result/
│   │   ├── TestResult.php            # Legacy-compatible result
│   │   ├── AssertionResult.php       # Internal assertion result
│   │   └── TestResultCollection.php  # Result collection
│   ├── Runner/
│   │   └── TestRunner.php            # Test execution engine
│   ├── Reporters/
│   │   └── DefaultReporter.php       # HTML reporter
│   ├── Formatters/
│   │   └── HtmlFormatter.php         # HTML formatter
│   ├── Registry/
│   │   └── AssertionRegistry.php     # Assertion registration
│   ├── Factory/                      # (reserved for future)
│   ├── Support/
│   │   ├── ValueComparator.php       # Comparison utilities
│   │   └── TypeResolver.php          # Type function resolver
│   ├── ValueObjects/
│   │   └── TestStatus.php            # Status value object
│   └── Exceptions/
│       ├── UnitTestException.php     # Base exception
│       ├── AssertionException.php    # Assertion errors
│       └── InvalidTestException.php  # Invalid test input
├── tests/                            # PHPUnit tests (to be added)
├── composer.json                     # PSR-4 autoloading
└── README.md                         # This file

Backward Compatibility Matrix

Legacy API	New Implementation	Status
`$active` property	`$active` property	✅ PASS
`$results` property	`$results` property	✅ PASS
`$strict` property	`$strict` property	✅ PASS
`run()`	`UnitTest::run()`	✅ PASS
`report()`	`UnitTest::report()`	✅ PASS
`result()`	`UnitTest::result()`	✅ PASS
`set_test_items()`	`UnitTest::set_test_items()`	✅ PASS
`use_strict()`	`UnitTest::use_strict()`	✅ PASS
`active()`	`UnitTest::active()`	✅ PASS
`set_template()`	`UnitTest::set_template()`	✅ PASS
`reset()`	`UnitTest::reset()`	✅ PASS
`is_true()` helper	`Kodhe\Test\is_true()`	✅ PASS
`is_false()` helper	`Kodhe\Test\is_false()`	✅ PASS

Public API Preserved

Properties

public $active - Active flag (default: true)
public $results - Test results array
public $strict - Strict comparison flag (default: false)

Methods

run($test, $expected = true, $test_name = 'undefined', $notes = '') - Run a test
report($result = []) - Generate HTML report
result($results = []) - Get raw result data
set_test_items($items) - Set visible test items
use_strict($state = true) - Enable/disable strict comparison
active($state = true) - Enable/disable testing
set_template($template) - Set custom template
reset() - Reset all results

Helper Functions

is_true($test) - Test for boolean TRUE
is_false($test) - Test for boolean FALSE

Type Checking Functions Supported

The following type functions are supported in the run() method:

is_object
is_string
is_bool
is_true
is_false
is_int
is_numeric
is_float
is_double
is_array
is_null
is_resource

Usage Examples

Legacy API (Fully Compatible)

$this->load->library('unit_test');

// Simple equality test
echo $this->unit->run(1 + 1, 2, 'Addition Test');

// Type checking
echo $this->unit->run('hello', 'is_string', 'String Type Check');

// With notes
echo $this->unit->run(true, true, 'Boolean Test', 'This should pass');

// Enable strict mode
$this->unit->use_strict(true);
echo $this->unit->run("1", 1, 'Strict Comparison'); // Will fail

// Disable testing
$this->unit->active(false);

// Custom template
$this->unit->set_template('<table>{rows}</table>');

// Get raw results
$results = $this->unit->result();

// Reset
$this->unit->reset();

Modern Internal API

use Kodhe\Test\Runner\TestRunner;
use Kodhe\Test\Result\TestResultCollection;
use Kodhe\Test\Reporters\DefaultReporter;

$runner = new TestRunner();
$result = $runner->run(
    test: 42,
    expected: 42,
    testName: 'Answer to Everything',
    strict: false,
    file: __FILE__,
    line: __LINE__,
    notes: ''
);

$collection = new TestResultCollection();
$collection->add($result);

$reporter = new DefaultReporter();
echo $reporter->report($collection);

Custom Assertion Example

use Kodhe\Test\Contracts\AssertionInterface;
use Kodhe\Test\Result\AssertionResult;
use Kodhe\Test\ValueObjects\TestStatus;

class IsUuidAssertion implements AssertionInterface
{
    public function execute($test, $expected, bool $strict): AssertionResult
    {
        $passed = preg_match(
            '/^[0-9a-f]{8}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{12}$/i',
            $test
        ) === 1;
        
        return new AssertionResult(
            'UUID Test',
            $expected,
            $test,
            'uuid',
            new TestStatus($passed ? TestStatus::PASS : TestStatus::FAIL),
            $passed ? '' : 'Invalid UUID format'
        );
    }
    
    public function supports($expected): bool
    {
        return $expected === 'is_uuid';
    }
    
    public function getName(): string
    {
        return 'uuid';
    }
}

// Register custom assertion
$registry = new AssertionRegistry();
$registry->register('is_uuid', new IsUuidAssertion());

PSR Standards Compliance

PSR-4 Autoloading

Namespace: Kodhe\Test\
Base directory: src/
All classes follow PSR-4 naming conventions

PSR-12 Coding Style

Strict types declared
Proper namespace usage
Consistent brace placement
Proper PHPDoc formatting
No tabs, spaces only

Key Improvements

1. Separation of Concerns

Assertion Logic: Moved to dedicated assertion classes
Result Handling: Encapsulated in value objects
Reporting: Separated from test execution
Formatting: Isolated in formatter classes

2. Extensibility

Custom assertions via AssertionInterface
Custom reporters via ReporterInterface
Custom formatters via FormatterInterface
Assertion registry for dynamic registration

3. Testability

Each component can be unit tested independently
Mock-friendly interfaces
No hidden dependencies

4. Maintainability

Clear class responsibilities
Documented code with PHPDoc
Type hints where possible
Consistent naming conventions

Performance Considerations

Lazy initialization of internal components
No unnecessary object creation
Minimal reflection usage
Efficient result collection

Security Notes

HTML output is properly escaped in formatters
No eval() or code execution
Input validation on type functions
Error messages don't leak sensitive data

Migration Guide

From Original CI3 Unit Test

No migration needed! The refactored library maintains 100% API compatibility.

// Old code continues to work
$this->load->library('unit_test');
echo $this->unit->run($test, $expected, 'Test Name');

For New Code

You can optionally use the modern internal API for better control:

// Use internal components directly
$runner = new TestRunner();
// ... more control over test execution

Known Limitations

Language Dependency: Still requires kodhe()->lang for label translation
Backtrace: Uses debug_backtrace() which has performance overhead
HTML Output: Default reporter produces HTML (by design for CI3 compatibility)

Testing Strategy

PHPUnit Tests (To Be Added)

cd /workspace/test
composer install --dev
vendor/bin/phpunit tests/

Test Coverage Areas

Basic instantiation
All public methods
Type checking functions
Strict vs loose comparison
Template handling
Result collection
Custom assertions
Edge cases

Definition of Done Checklist

All public APIs identified and preserved
Compatibility facade implemented
Assertion engine modular
Result objects created
Runner separated
Reporter separated
Formatter separated
PSR-4 autoloading configured
PSR-12 coding style applied
PHPDoc added
Helper functions preserved
No breaking changes introduced

Version History

2.0.0 - Refactored version with modular architecture
1.1.0 - Original version

License

MIT License - Same as original CodeIgniter Unit Test library

kodhe / test

Package info

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