foundation/tests/Unit/Core/DependencyInjection/InflectableContainerTest.php

<?php

declare(strict_types = 1);

namespace Foundation\Tests\Unit\Core\DependencyInjection;

use DI\Container;
use Foundation\Core\DependencyInjection\AttributeProcessorInterface;
use Foundation\Core\DependencyInjection\InflectableContainer;
use PHPUnit\Framework\TestCase;

class InflectableContainerTest extends TestCase
{
    private Container $phpDiContainer;
    private InflectableContainer $container;

    protected function setUp(): void {
        $this->phpDiContainer = new Container();
        $this->container = new InflectableContainer($this->phpDiContainer);
    }

    public function testCanGetAndSetServices(): void {
        $this->container->set('test.value', 'hello world');

        self::assertTrue($this->container->has('test.value'));
        self::assertSame('hello world', $this->container->get('test.value'));
    }

    public function testCanMakeInstancesWithParameters(): void {
        $instance = $this->container->make(TestClass::class, ['value' => 'test']);

        self::assertInstanceOf(TestClass::class, $instance);
        self::assertSame('test', $instance->getValue());
    }

    public function testCanRegisterClassWithoutDependencies(): void {
        $instance = $this->container->register(TestClass::class);

        self::assertInstanceOf(TestClass::class, $instance);
        self::assertTrue($this->container->has(TestClass::class));
    }

    public function testCanRegisterClassWithDependencies(): void {
        $this->container->set('dependency', new TestDependency('injected'));

        $instance = $this->container->register(TestClassWithDependency::class, ['dependency']);

        self::assertInstanceOf(TestClassWithDependency::class, $instance);
        self::assertSame('injected', $instance->getDependencyValue());
    }

    public function testCanBindInterfaceToImplementation(): void {
        $instance = $this->container->bind(TestInterface::class, TestImplementation::class);

        self::assertInstanceOf(TestImplementation::class, $instance);
        self::assertTrue($this->container->has(TestInterface::class));

        $retrieved = $this->container->get(TestInterface::class);
        self::assertInstanceOf(TestImplementation::class, $retrieved);
    }

    public function testCanBindInterfaceToImplementationWithDependencies(): void {
        $this->container->set('dependency', new TestDependency('bound'));

        $instance = $this->container->bind(
            TestInterface::class,
            TestImplementationWithDependency::class,
            ['dependency'],
        );

        self::assertInstanceOf(TestImplementationWithDependency::class, $instance);
        self::assertSame('bound', $instance->getDependencyValue());
    }

    public function testInflectionSystemAppliesDirectClassInflections(): void {
        $this->container->registerInflection(
            TestInflectionTarget::class,
            'setInjectedValue',
            ['injected_value'],
        );

        $instance = $this->container->make(TestInflectionTarget::class);

        self::assertSame('injected_value', $instance->getInjectedValue());
    }

    public function testInflectionSystemAppliesInterfaceInflections(): void {
        $this->container->registerInflection(
            TestInflectionInterface::class,
            'setInjectedValue',
            ['interface_value'],
        );

        $instance = $this->container->make(TestInflectionImplementation::class);

        self::assertSame('interface_value', $instance->getInjectedValue());
    }

    public function testInflectionSystemResolvesParametersFromContainer(): void {
        $dependency = new TestDependency('resolved');
        $this->container->set(TestDependency::class, $dependency);

        $this->container->registerInflection(
            TestInflectionTarget::class,
            'setDependency',
            [TestDependency::class],
        );

        $instance = $this->container->make(TestInflectionTarget::class);

        self::assertSame($dependency, $instance->getDependency());
    }

    public function testAttributeProcessorsAreCalledDuringRegistration(): void {
        $processor = $this->createMock(AttributeProcessorInterface::class);
        $processor->expects(self::once())->method('canProcess')->with(TestClass::class)->willReturn(true);
        $processor->expects(self::once())->method('process')->with(TestClass::class);

        $this->container->addAttributeProcessor($processor);
        $this->container->register(TestClass::class);
    }

    public function testReturnsNonObjectsDirectly(): void {
        $this->container->set('array.value', ['test' => 'array']);
        $this->container->set('string.value', 'test string');

        self::assertSame(['test' => 'array'], $this->container->get('array.value'));
        self::assertSame('test string', $this->container->get('string.value'));
    }
}

class TestClass
{
    public function __construct(private readonly string $value = 'default') {}

    public function getValue(): string {
        return $this->value;
    }
}

class TestDependency
{
    public function __construct(private readonly string $value) {}

    public function getValue(): string {
        return $this->value;
    }
}

class TestClassWithDependency
{
    public function __construct(private readonly TestDependency $dependency) {}

    public function getDependencyValue(): string {
        return $this->dependency->getValue();
    }
}

interface TestInterface { }

class TestImplementation implements TestInterface { }

class TestImplementationWithDependency implements TestInterface
{
    public function __construct(private readonly TestDependency $dependency) {}

    public function getDependencyValue(): string {
        return $this->dependency->getValue();
    }
}

interface TestInflectionInterface
{
    public function setInjectedValue(string $value): void;
}

class TestInflectionTarget
{
    private ?string $injectedValue = null;
    private ?TestDependency $dependency = null;

    public function setInjectedValue(string $value): void {
        $this->injectedValue = $value;
    }

    public function getInjectedValue(): ?string {
        return $this->injectedValue;
    }

    public function setDependency(TestDependency $dependency): void {
        $this->dependency = $dependency;
    }

    public function getDependency(): ?TestDependency {
        return $this->dependency;
    }
}

class TestInflectionImplementation implements TestInflectionInterface
{
    private ?string $injectedValue = null;

    public function setInjectedValue(string $value): void {
        $this->injectedValue = $value;
    }

    public function getInjectedValue(): ?string {
        return $this->injectedValue;
    }
}