Issue #3055245 by Pancho: Add a PdfParseTest for locally installed backends

tests/src/Functional/PdfParseTest.php

+<?php
+
+namespace Drupal\Tests\fillpdf\Functional;
+
+use Drupal\Tests\BrowserTestBase;
+use Drupal\Tests\fillpdf\Traits\TestFillPdfTrait;
+use Drupal\fillpdf\Component\Utility\FillPdf;
+use Drupal\fillpdf\Entity\FillPdfForm;
+
+/**
+ * Tests PDF parsing.
+ *
+ * @group fillpdf
+ */
+class PdfParseTest extends BrowserTestBase {
+
+  use TestFillPdfTrait;
+
+  static public $modules = ['fillpdf_test'];
+  protected $profile = 'minimal';
+
+  /**
+   * {@inheritdoc}
+   */
+  protected function setUp() {
+    parent::setUp();
+
+    $this->initializeUser();
+  }
+
+  /**
+   * Tests PDF population using local service.
+   *
+   * @throws \PHPUnit_Framework_SkippedTestError
+   *   Thrown when test had to be skipped as FillPDF LocalServer is not
+   *   available.
+   */
+  public function testParseLocalService() {
+    // For local container testing, we require the Docker container to be
+    // running on port 8085. If http://127.0.0.1:8085/ping does not return a
+    // 200, we assume that we're not in an environment where we can run this
+    // test.
+    $this->configureLocalServiceBackend();
+    $config = $this->container->get('config.factory')->get('fillpdf.settings');
+    if (!FillPdf::checkLocalServiceEndpoint($this->container->get('http_client'), $config)) {
+      throw new \PHPUnit_Framework_SkippedTestError('FillPDF LocalServer unavailable, so skipping test.');
+    }
+    $this->backendTest();
+  }
+
+  /**
+   * Tests PDF population using a local install of pdftk.
+   *
+   * @throws \PHPUnit_Framework_SkippedTestError
+   *   Thrown when test had to be skipped as local pdftk install is not
+   *   available.
+   *
+   * @todo Implementation missing.
+   */
+  public function testParsePdftk() {
+    $this->configureFillPdf(['backend' => 'pdftk']);
+    if (!FillPdf::checkPdftkPath()) {
+      throw new \PHPUnit_Framework_SkippedTestError('pdftk not available, so skipping test.');
+    }
+    $this->backendTest();
+  }
+
+  /**
+   * Tests a backend.
+   */
+  protected function backendTest() {
+    $this->uploadTestPdf('fillpdf_test_v3.pdf');
+    $this->assertSession()->pageTextNotContains('No fields detected in PDF.');
+
+    $fillpdf_form = FillPdfForm::load($this->getLatestFillPdfForm());
+    $fields = $fillpdf_form->getFormFields();
+    $this->assertCount(11, $fields);
+  }
+
+}