--- /dev/null
+<?php
+
+namespace Drupal\Tests\field\Unit\Plugin\migrate\process;
+
+use Drupal\Component\Plugin\Exception\PluginNotFoundException;
+use Drupal\field\Plugin\migrate\process\ProcessField;
+use Drupal\migrate\MigrateException;
+use Drupal\migrate\MigrateExecutable;
+use Drupal\migrate\Plugin\MigrationInterface;
+use Drupal\migrate\Row;
+use Drupal\migrate_drupal\Plugin\MigrateCckFieldPluginManagerInterface;
+use Drupal\migrate_drupal\Plugin\MigrateFieldInterface;
+use Drupal\migrate_drupal\Plugin\MigrateFieldPluginManagerInterface;
+use Drupal\Tests\migrate\Unit\MigrateTestCase;
+
+/**
+ * Tests the ProcessField migrate process plugin.
+ *
+ * @coversDefaultClass \Drupal\field\Plugin\migrate\process\ProcessField
+ * @group field
+ * @group legacy
+ */
+class ProcessFieldTest extends MigrateTestCase {
+
+ /**
+ * {@inheritdoc}
+ */
+ protected function setUp() {
+ $this->cckFieldManager = $this->prophesize(MigrateCckFieldPluginManagerInterface::class);
+ $this->fieldManager = $this->prophesize(MigrateFieldPluginManagerInterface::class);
+ $this->fieldPlugin = $this->prophesize(MigrateFieldInterface::class);
+ $this->migrateExecutable = $this->prophesize(MigrateExecutable::class);
+ $this->migration = $this->prophesize(MigrationInterface::class);
+ $this->row = $this->prophesize(Row::class);
+
+ $this->fieldManager->getPluginIdFromFieldType('foo', [], $this->migration->reveal())->willReturn('foo');
+ $this->fieldManager->createInstance('foo', [], $this->migration->reveal())->willReturn($this->fieldPlugin);
+
+ parent::setUp();
+ }
+
+ /**
+ * Tests the transform method.
+ *
+ * @param string $method
+ * The method to call.
+ * @param string $value
+ * The value to process.
+ * @param mixed $expected_value
+ * The expected transformed value.
+ * @param string $migrate_exception
+ * The MigrateException message to expect.
+ * @param bool $plugin_not_found
+ * Whether the field plugin is not found.
+ *
+ * @covers ::transform
+ * @dataProvider providerTestTransform
+ */
+ public function testTransform($method, $value, $expected_value, $migrate_exception = '', $plugin_not_found = FALSE) {
+ if ($method) {
+ $this->fieldPlugin->$method($this->row->reveal())->willReturn($expected_value);
+ }
+ $this->plugin = new ProcessField(['method' => $method], $value, [], $this->cckFieldManager->reveal(), $this->fieldManager->reveal(), $this->migration->reveal());
+
+ if ($migrate_exception) {
+ $this->setExpectedException(MigrateException::class, $migrate_exception);
+ }
+
+ if ($plugin_not_found) {
+ $exception = new PluginNotFoundException('foo');
+ $this->cckFieldManager->getPluginIdFromFieldType()->willThrow($exception);
+ $this->fieldManager->getPluginIdFromFieldType()->willThrow($exception);
+ }
+
+ $transformed_value = $this->plugin->transform($value, $this->migrateExecutable->reveal(), $this->row->reveal(), 'foo');
+ $this->assertSame($transformed_value, $expected_value);
+ }
+
+ /**
+ * Provides data for the transform method test.
+ *
+ * @return array
+ * - The method to call.
+ * - The value to process.
+ * - The expected transformed value.
+ * - The MigrateException message to expect.
+ * - Whether the field plugin is not found.
+ */
+ public function providerTestTransform() {
+ return [
+ // Tests the getFieldType() method.
+ [
+ 'method' => 'getFieldType',
+ 'value' => 'foo',
+ 'expected_value' => 'bar',
+ ],
+ // Tests the getFieldFormatterMap() method.
+ [
+ 'method' => 'getFieldFormatterMap',
+ 'value' => 'foo',
+ 'expected_value' => ['foo' => 'bar'],
+ ],
+ // Tests the getFieldWidgetMap() method.
+ [
+ 'method' => 'getFieldWidgetMap',
+ 'value' => 'foo',
+ 'expected_value' => ['foo' => 'bar'],
+ ],
+ // Tests that an exception is thrown if the value is not a string.
+ [
+ 'method' => 'getFieldType',
+ 'value' => ['foo'],
+ 'expected_value' => '',
+ 'migrate_exception' => 'The input value must be a string.',
+ ],
+ // Tests that an exception is thrown if no method name is provided.
+ [
+ 'method' => '',
+ 'value' => '',
+ 'expected_value' => '',
+ 'migrate_exception' => 'You need to specify the name of a method to be called on the Field plugin.',
+ ],
+ // Tests that NULL is returned if no field plugin is found.
+ [
+ 'method' => 'getFieldType',
+ 'value' => 'foo',
+ 'expected_value' => NULL,
+ 'migrate_exception' => '',
+ 'plugin_not_found' => TRUE,
+ ],
+ ];
+ }
+
+}