Fix test for Laravel 5.5

Author: etrepat

composer.json

@@ -13,14 +13,16 @@
   ],
   "require": {
     "php": ">=7.0.0",
-    "illuminate/database": "~5.5.0|~5.6.0|~5.7.0|~5.8.0",
-    "illuminate/events": "~5.5.0|~5.6.0|~5.7.0|~5.8.0"
+    "illuminate/database": "~5.5.0|~5.6.0|~5.7.0|~5.8.0|~5.9.0",
+    "illuminate/events": "~5.5.0|~5.6.0|~5.7.0|~5.8.0|~5.9.0",
+    "illuminate/support": "~5.5.0|~5.6.0|~5.7.0|~5.8.0|~5.9.0"
   },
   "require-dev": {
+    "d11wtq/boris": "~1.0.10",
+    "doctrine/dbal": "*",
     "mockery/mockery": "^1.0",
     "phpunit/phpunit": "^7.0",
-    "d11wtq/boris": "~1.0.10",
-    "doctrine/dbal": "^2.9"
+    "squizlabs/php_codesniffer": "^3.4"
   },
   "autoload": {
     "psr-4": {

tests/suite/Category/CategoryRelationsTest.php

@@ -17,9 +17,14 @@ public function testParentRelationIsSelfReferential() {
   public function testParentRelationRefersToCorrectField() {
     $category = new Category;
 
-    $this->assertEquals($category->getParentColumnName(), $category->parent()->getForeignKeyName());
-
-    $this->assertEquals($category->getQualifiedParentColumnName(), $category->parent()->getQualifiedForeignKeyName());
+    if (method_exists($category->parent(), 'getForeignKeyName')) {
+        // For Laravel 5.6+
+        $this->assertEquals($category->getParentColumnName(), $category->parent()->getForeignKeyName());
+        $this->assertEquals($category->getQualifiedParentColumnName(), $category->parent()->getQualifiedForeignKeyName());
+    } else {
+        $this->assertEquals($category->getParentColumnName(), $category->parent()->getForeignKey());
+        $this->assertEquals($category->getQualifiedParentColumnName(), $category->parent()->getQualifiedForeignKey());
+    }
   }
 
   public function testParentRelation() {