add unit tests to php-graphql

Author: joonlabs

phpunit.xml.dist

@@ -0,0 +1,19 @@
+<?xml version="1.0" encoding="utf-8"?>
+<phpunit
+    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+    xsi:noNamespaceSchemaLocation="vendor/phpunit/phpunit/phpunit.xsd"
+    bootstrap="tests/bootstrap.php">
+    <coverage>
+        <include>
+            <directory suffix=".php">./src</directory>
+        </include>
+    </coverage>
+    <php>
+        <ini name="error_reporting" value="E_ALL"/>
+    </php>
+    <testsuites>
+        <testsuite name="joonlabs/php-graphql">
+            <directory>./tests/</directory>
+        </testsuite>
+    </testsuites>
+</phpunit>

tests/Errors/ErrorTest.php

@@ -0,0 +1,24 @@
+<?php
+
+use \PHPUnit\Framework\TestCase;
+use \GraphQL\Errors\GraphQLError;
+
+class ErrorTest extends TestCase {
+
+    /**
+     * check if node can be converted into location correctly
+     */
+    public function testConvertNodeToPosition(){
+        $node = [
+            // ... more properties of node
+            "loc" => [
+                "line" => 1,
+                "column" => 1,
+            ]
+        ];
+        $Error = new GraphQLError("message", $node);
+        self::assertSame($Error->getLocations(), $node["loc"]);
+    }
+
+
+}