Add feature tests

.gitignore

@@ -1,4 +1,3 @@
 /vendor
 /composer.phar
 /composer.lock
-*.tmp.pdf

.travis.yml

@@ -13,6 +13,5 @@ install:
   - bob install_dev_tools
 
 script:
-
-TODO:
   - phpunit
+  - behat

bob_config.php

@@ -15,9 +15,8 @@
 
 desc('Run behat feature tests');
 task('behat', function() {
-    println('SKIPPED Behat feature tests!!');
-    #shell('behat --stop-on-failure');
-    #println('Behat feature tests passed');
+    shell('behat --stop-on-failure');
+    println('Behat feature tests passed');
 });
 
 desc('Run statical analysis using phpstan');

features/bootstrap/FeatureContext.php

@@ -0,0 +1,103 @@
+<?php
+
+declare(strict_types = 1);
+
+use Behat\Behat\Context\Context;
+use Behat\Gherkin\Node\PyStringNode;
+use Behat\Gherkin\Node\TableNode;
+use Behat\Behat\Tester\Exception\PendingException;
+use iio\libmergepdf\Merger;
+use iio\libmergepdf\Pages;
+use setasign\Fpdi\Tcpdf\Fpdi;
+use setasign\Fpdi\PdfParser\StreamReader;
+
+final class FeatureContext implements Context
+{
+    /**
+     * @var Merger
+     */
+    private $merger;
+
+    /**
+     * @var string
+     */
+    private $generatedPdf;
+
+    /**
+     * @var Fpdi
+     */
+    private $fpdi;
+
+    public function __construct()
+    {
+        $this->fpdi = new Fpdi;
+    }
+
+    /**
+     * @Given the :driver driver
+     */
+    public function theDriver(string $driver)
+    {
+        $driverClass = "iio\libmergepdf\Driver\\$driver";
+        $this->merger = new Merger(new $driverClass);
+    }
+
+    /**
+     * @Given a pdf
+     */
+    public function aPdf()
+    {
+        $this->aPdfOfVersion('1.4');
+    }
+
+    /**
+     * @Given a pdf with pages :pages
+     */
+    public function aPdfWithPages($pages)
+    {
+        $this->aPdfOfVersionWithPages('1.4', $pages);
+    }
+
+    /**
+     * @Given a pdf of version :version
+     */
+    public function aPdfOfVersion(string $version)
+    {
+        $this->aPdfOfVersionWithPages($version, '');
+    }
+
+    /**
+     * @Given a pdf of version :version with pages :pages
+     */
+    public function aPdfOfVersionWithPages(string $version, string $pages)
+    {
+        $this->merger->addFile(__DIR__ . "/../files/$version.pdf", new Pages($pages));
+    }
+
+    /**
+     * @When I merge
+     */
+    public function iMerge()
+    {
+        $this->generatedPdf = $this->merger->merge();
+    }
+
+    /**
+     * @Then a pdf is generated
+     */
+    public function aPdfIsGenerated()
+    {
+        $this->fpdi->setSourceFile(StreamReader::createByString($this->generatedPdf));
+    }
+
+    /**
+     * @Then a pdf with :expectedCount pages is generated
+     */
+    public function aPdfWithPagesIsGenerated(string $expectedCount)
+    {
+        $pageCount = $this->fpdi->setSourceFile(StreamReader::createByString($this->generatedPdf));
+        if ($pageCount != $expectedCount) {
+            throw new Exception("A pdf with $pageCount pages was created, expected $expectedCount pages.");
+        }
+    }
+}

features/merge.feature

@@ -0,0 +1,41 @@
+Feature: Mergeing pdfs
+  In order to use lib
+  As a user
+  I need to be able to merge pdfs
+
+  Scenario: I merge two pdfs using the fpdi driver
+    Given the "Fpdi2Driver" driver
+    And a pdf
+    And a pdf
+    When I merge
+    Then a pdf is generated
+
+  Scenario: I merge selected pages using the fpdi driver
+    Given the "Fpdi2Driver" driver
+    And a pdf with pages "1"
+    And a pdf with pages "1-2"
+    When I merge
+    Then a pdf with "3" pages is generated
+
+  Scenario: I merge two pdfs using the tcpdi driver
+    Given the "TcpdiDriver" driver
+    And a pdf
+    And a pdf
+    When I merge
+    Then a pdf is generated
+
+  Scenario: I merge selected pages using the tcpdi driver
+    Given the "TcpdiDriver" driver
+    And a pdf with pages "1"
+    And a pdf with pages "1-2"
+    When I merge
+    Then a pdf with "3" pages is generated
+
+  Scenario: I merge pdfs of versions later than 1.4
+    Given the "TcpdiDriver" driver
+    And a pdf of version "1.4" with pages "1"
+    And a pdf of version "1.5" with pages "1"
+    And a pdf of version "1.6" with pages "1"
+    And a pdf of version "1.7" with pages "1"
+    When I merge
+    Then a pdf with "4" pages is generated

src/Driver/TcpdiDriver.php

@@ -16,6 +16,9 @@ final class TcpdiDriver implements DriverInterface
 
     public function __construct(\TCPDI $tcpdi = null)
     {
+        // TODO A stupid hack to hide deprecation notice
+        @each($arr = []);
+
         $this->tcpdi = $tcpdi ?: new \TCPDI;
     }