michaelschiemer/tests/Unit/Framework/Config/EnumResolverTest.php

<?php

declare(strict_types=1);

use App\Framework\Config\EnumResolver;
use BackedEnum;

describe('EnumResolver', function () {
    beforeEach(function () {
        $this->resolver = new EnumResolver();
    });

    describe('resolve()', function () {
        it('converts string value to enum', function () {
            // Create a test enum
            if (!enum_exists('TestEnum')) {
                eval('enum TestEnum: string { case FOO = "foo"; case BAR = "bar"; }');
            }

            $default = TestEnum::BAR;
            $result = $this->resolver->resolve('foo', TestEnum::class, $default);

            expect($result)->toBe(TestEnum::FOO);
        });

        it('converts int value to enum', function () {
            // Create a test enum with int backing
            if (!enum_exists('IntTestEnum')) {
                eval('enum IntTestEnum: int { case ONE = 1; case TWO = 2; }');
            }

            $default = IntTestEnum::TWO;
            $result = $this->resolver->resolve(1, IntTestEnum::class, $default);

            expect($result)->toBe(IntTestEnum::ONE);
        });

        it('returns default when value cannot be converted', function () {
            if (!enum_exists('TestEnum')) {
                eval('enum TestEnum: string { case FOO = "foo"; case BAR = "bar"; }');
            }

            $default = TestEnum::BAR;
            $result = $this->resolver->resolve('invalid', TestEnum::class, $default);

            expect($result)->toBe($default);
        });

        it('returns default when value is null', function () {
            if (!enum_exists('TestEnum')) {
                eval('enum TestEnum: string { case FOO = "foo"; case BAR = "bar"; }');
            }

            $default = TestEnum::BAR;
            $result = $this->resolver->resolve(null, TestEnum::class, $default);

            expect($result)->toBe($default);
        });

        it('throws exception when default is not instance of enum class', function () {
            if (!enum_exists('TestEnum')) {
                eval('enum TestEnum: string { case FOO = "foo"; case BAR = "bar"; }');
            }
            if (!enum_exists('AnotherEnum')) {
                eval('enum AnotherEnum: string { case BAZ = "baz"; }');
            }

            $wrongDefault = AnotherEnum::BAZ;

            expect(function () use ($wrongDefault) {
                $this->resolver->resolve('foo', TestEnum::class, $wrongDefault);
            })->toThrow(\InvalidArgumentException::class);
        });
    });

    describe('caching', function () {
        it('caches enum conversion results', function () {
            if (!enum_exists('TestEnum')) {
                eval('enum TestEnum: string { case FOO = "foo"; case BAR = "bar"; }');
            }

            $default = TestEnum::BAR;

            // First call - should convert
            $enum1 = $this->resolver->resolve('foo', TestEnum::class, $default);
            expect($enum1)->toBe(TestEnum::FOO);

            // Second call to same resolver instance should use cache
            // (We can't directly verify cache, but we can verify it returns the same instance)
            $enum2 = $this->resolver->resolve('foo', TestEnum::class, $default);
            expect($enum2)->toBe(TestEnum::FOO);
            expect($enum1)->toBe($enum2);
        });

        it('caches different enum classes separately', function () {
            if (!enum_exists('TestEnum')) {
                eval('enum TestEnum: string { case FOO = "foo"; case BAR = "bar"; }');
            }
            if (!enum_exists('AnotherTestEnum')) {
                eval('enum AnotherTestEnum: string { case FOO = "foo"; case BAR = "bar"; }');
            }

            $default1 = TestEnum::BAR;
            $default2 = AnotherTestEnum::BAR;

            $enum1 = $this->resolver->resolve('foo', TestEnum::class, $default1);
            $enum2 = $this->resolver->resolve('foo', AnotherTestEnum::class, $default2);

            expect($enum1)->toBe(TestEnum::FOO);
            expect($enum2)->toBe(AnotherTestEnum::FOO);
            expect($enum1)->not->toBe($enum2); // Different enum classes
        });

        it('caches different values separately', function () {
            if (!enum_exists('TestEnum')) {
                eval('enum TestEnum: string { case FOO = "foo"; case BAR = "bar"; }');
            }

            $default = TestEnum::BAR;

            $enum1 = $this->resolver->resolve('foo', TestEnum::class, $default);
            $enum2 = $this->resolver->resolve('bar', TestEnum::class, $default);

            expect($enum1)->toBe(TestEnum::FOO);
            expect($enum2)->toBe(TestEnum::BAR);
        });

        it('caches default values', function () {
            if (!enum_exists('TestEnum')) {
                eval('enum TestEnum: string { case FOO = "foo"; case BAR = "bar"; }');
            }

            $default = TestEnum::BAR;

            // First call with null
            $enum1 = $this->resolver->resolve(null, TestEnum::class, $default);
            expect($enum1)->toBe($default);

            // Second call with null should return cached default
            $enum2 = $this->resolver->resolve(null, TestEnum::class, $default);
            expect($enum2)->toBe($default);
            expect($enum1)->toBe($enum2);
        });
    });
});