<?php

namespace Filter;

use ExampleDocumentAccess;
use PHPUnit\Framework\TestCase;
use TypeError;

/**
 * @covers \Filter\GenericFilter
 */
class GenericFilterTest extends TestCase
{
    use ExampleDocumentAccess;

    public function testAllowsWhenMatchBasenameOfFile(): void
    {
        $filter = new GenericFilter('example');
        $document = $this->exampleDocument();

        self::assertTrue($filter->allows($document));
    }

    public function testAllowsWhenMatchesPathToFile(): void
    {
        $filter = new GenericFilter('resources');
        $document = $this->exampleDocument();

        self::assertTrue($filter->allows($document));
    }

    public function testAllowsWhenMatchesAnyMetadataField(): void
    {
        $filter = new GenericFilter('John Snow');
        $document = $this->exampleDocumentWithMetadata([
            'title'  => 'some title',
            'author' => 'John Snow',
        ]);

        self::assertTrue($filter->allows($document));
    }

    public function testDisallowsWhenNotMatchingBasenameOfFile(): void
    {
        $filter = new GenericFilter('not-an-example');
        $document = $this->exampleDocument();

        self::assertFalse($filter->allows($document));
    }

    public function testDisallowsWhenNotMatchingPathToFile(): void
    {
        $filter = new GenericFilter('this-is-definitely-not-in-the-path' . md5(time()));
        $document = $this->exampleDocument();

        self::assertFalse($filter->allows($document));
    }

    public function testDisallowsWhenNotMatchingAnyMetadataField(): void
    {
        $filter = new GenericFilter('peepee');
        $document = $this->exampleDocumentWithMetadata([
            'title'  => 'some title',
            'author' => 'John Snow',
        ]);

        self::assertFalse($filter->allows($document));
    }

    public function testStringRepresentation(): void
    {
        $filter = new GenericFilter('i-am-a-field');
        self::assertEquals(
            '[*] contains \'i-am-a-field\'',
            (string)$filter
        );
    }

    public function testDoesNotAcceptNull(): void
    {
        $this->expectException(TypeError::class);
        new GenericFilter(null);
    }
}