Filename Fieldmapper & unit tests

Signed-off-by: Tom Van Herreweghe <[email protected]>

Author: Miljar

src/Reader/Mapper/Exif/FilenameFieldMapper.php

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+<?php
+/**
+ * Mapper for mapping data between raw input and a Filename VO
+ *
+ * @category    PHPExif
+ * @copyright   Copyright (c) 2016 Tom Van Herreweghe <[email protected]>
+ * @license     http://github.com/PHPExif/php-exif-exiftool/blob/master/LICENSE MIT License
+ * @link        http://github.com/PHPExif/php-exif-exiftool for the canonical source repository
+ * @package     Exiftool
+ */
+
+namespace PHPExif\Adapter\Exiftool\Reader\Mapper\Exif;
+
+use PHPExif\Common\Data\ExifInterface;
+use PHPExif\Common\Data\ValueObject\Filename;
+use PHPExif\Common\Mapper\FieldMapper;
+use PHPExif\Common\Mapper\GuardInvalidArgumentsForExifTrait;
+
+/**
+ * Mapper
+ *
+ * @category    PHPExif
+ * @package     Exiftool
+ */
+class FilenameFieldMapper implements FieldMapper
+{
+    use GuardInvalidArgumentsForExifTrait;
+    use ValidKeysTrait;
+
+    /**
+     * @var array
+     */
+    private $validKeys = [
+        'sourcefile',
+        'system:filename',
+    ];
+
+    /**
+     * {@inheritDoc}
+     */
+    public function getSupportedFields()
+    {
+        return array(
+            Filename::class,
+        );
+    }
+
+    /**
+     * {@inheritDoc}
+     */
+    public function mapField($field, array $input, &$output)
+    {
+        $this->guardInvalidArguments($field, $input, $output);
+
+        foreach ($this->validKeys as $key) {
+            if (!array_key_exists($key, $input)) {
+                continue;
+            }
+
+            $filename = new Filename($input[$key]);
+            $output = $output->withFilename($filename);
+            break;
+        }
+    }
+}

tests/unit/Reader/Mapper/Exif/FilenameFieldMapperTest.php

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+<?php
+
+namespace Tests\PHPExif\Adapter\Exiftool\Reader\Mapper\Exif;
+
+use Mockery as m;
+use PHPExif\Adapter\Exiftool\Reader\Mapper\Exif\FilenameFieldMapper;
+use PHPExif\Common\Data\Exif;
+use PHPExif\Common\Data\ValueObject\Filename;
+
+/**
+ * Class: FilenameFieldMapperTest
+ *
+ * @see \PHPUnit_Framework_TestCase
+ * @coversDefaultClass \PHPExif\Adapter\Exiftool\Reader\Mapper\Exif\FilenameFieldMapper
+ * @covers ::<!public>
+ */
+class FilenameFieldMapperTest extends BaseFieldMapperTest
+{
+    /**
+     * {@inheritdoc}
+     */
+    protected $fieldMapperClass = FilenameFieldMapper::class;
+
+    /**
+     * {@inheritdoc}
+     */
+    protected $supportedFields = [
+        Filename::class,
+    ];
+
+    /**
+     * {@inheritdoc}
+     */
+    protected $validInput = [
+        'sourcefile' => 'IMG_0001.JPG',
+        'system:filename' => 'IMG_0002.JPG',
+    ];
+
+    /**
+     * {@inheritdoc}
+     */
+    protected $outputAccessor = 'getFilename';
+
+    /**
+     * @covers ::mapField
+     * @group mapper
+     *
+     * @return void
+     */
+    public function testMapFieldHasDataInOutput()
+    {
+        $field = reset($this->supportedFields);
+        $output = new Exif;
+        $mapper = new $this->fieldMapperClass();
+
+        $originalData = $output->{$this->outputAccessor}();
+        $mapper->mapField($field, $this->validInput, $output);
+        $newData = $output->{$this->outputAccessor}();
+
+        $this->assertNotSame($originalData, $newData);
+
+        $this->assertInstanceOf(
+            Filename::class,
+            $newData
+        );
+
+        $this->assertEquals(
+            $this->validInput['sourcefile'],
+            $newData
+        );
+    }
+}