added tests for user functions

Author: Alexsey-VR

src/Differ.php

@@ -2,26 +2,26 @@
 
 namespace Differ\Differ;
 
+use Differ\CommandFactory;
 use Differ\CommandLineParser;
 use Differ\FilesDiffCommand;
 use Differ\FileReader;
 use Differ\DisplayCommand;
 
 function genDiff(string $pathToFile1, string $pathToFile2)
 {
-    $parserCommand = new CommandLineParser();
+    $commandFactory = new CommandFactory();
+    $parserCommand = $commandFactory->getCommand('parse');
     $fileNames = [
         "FILE1" => $pathToFile1,
         "FILE2" => $pathToFile2
     ];
     $nextCommand = $parserCommand->setFileNames($fileNames);
 
-    $currentCommand = new FilesDiffCommand();
-    $nextCommand = $currentCommand->setFileNames($nextCommand)
-                                  ->setFileReader(new FileReader())
-                                  ->execute();
+    $currentCommand = $commandFactory->getCommand('difference');
+    $nextCommand = $currentCommand->setFileReader(new FileReader())
+                                  ->execute($nextCommand);
 
-    $currentCommand = new DisplayCommand();
-    return $currentCommand->execute($nextCommand)
-                          ->getDiffs();
+    $currentCommand = $commandFactory->getCommand('show');
+    return $currentCommand->execute($nextCommand);
 }

tests/GendiffTest.php

@@ -2,10 +2,7 @@
 
 namespace Differ;
 
-//require_once __DIR__ . '/../vendor/autoload.php';
-
 use PHPUnit\Framework\TestCase;
-use PHPUnit\Framework\Attributes\CoversFunction;
 use PHPUnit\Framework\Attributes\CoversNothing;
 use function Differ\runGendiff;
 

tests/genDiffUserTest.php

@@ -0,0 +1,30 @@
+<?php
+
+namespace Differ;
+
+use PHPUnit\Framework\TestCase;
+use PHPUnit\Framework\Attributes\CoversNothing;
+use function Differ\Differ\genDiff as genDiff;
+use Differ\CommandLineParser;
+use Differ\FilesDiffCommand;
+use Differ\FileReader;
+use Differ\DisplayCommand;
+
+#[CoversNothing]
+class genDiffUserTest extends TestCase
+{
+    function testFilesDiffer()
+    {
+        $outputString = "{\n" .
+        "    hexlet.io\n" .
+        "  - 50\n" .
+        "  + 20\n" .
+        "  - 123.234.53.22\n" .
+        "  - \n" .
+        "}\n";
+
+        $this->expectOutputString($outputString);
+
+        genDiff(__DIR__ . "/../file1.json", __DIR__ . "/../file2.json");
+    }
+}