Add unit testing to prevent regressions

Author: duncan3dc

composer.json

@@ -14,6 +14,9 @@
     "require": {
         "php": "^5.6|^7.0"
     },
+    "require-dev": {
+        "phpunit/phpunit": "^5.7"
+    },
     "autoload": {
         "classmap": ["lib/"],
         "files": ["lib/common/customFunctions.php"]

index.php

@@ -0,0 +1,10 @@
+<phpunit bootstrap="tests/bootstrap.php">
+    <testsuite>
+        <directory suffix="Test.php">tests</directory>
+    </testsuite>
+    <filter>
+        <whitelist processUncoveredFilesFromWhitelist="true">
+            <directory suffix=".php">src</directory>
+        </whitelist>
+    </filter>
+</phpunit>

phpunit.xml.dist

@@ -0,0 +1,15 @@
+<?php
+
+namespace Khanamiryan\QrCodeTests;
+
+class QrReaderTest extends \PHPUnit_Framework_TestCase
+{
+
+    public function testText1()
+    {
+        $image = __DIR__ . "/qrcodes/hello_world.png";
+
+        $qrcode = new \QrReader($image);
+        $this->assertSame("Hello world!", $qrcode->text());
+    }
+}

tests/QrReaderTest.php

@@ -0,0 +1,3 @@
+<?php
+
+require __DIR__ . "/../vendor/autoload.php";