Update phpunit library version.

composer.json

@@ -12,15 +12,15 @@
     }
   ],
   "require": {
-    "php": ">=7.1.0",
-    "illuminate/database": "5.5.*|5.6.*|5.7.*|5.8.*|5.9.*",
-    "illuminate/events": "5.5.*|5.6.*|5.7.*|5.8.*|5.9.*",
-    "doctrine/dbal": "^2.9"
+    "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"
   },
   "require-dev": {
-    "phpunit/phpunit": "~4.0",
-    "mockery/mockery": "~0.9",
-    "d11wtq/boris": "~1.0.10"
+    "mockery/mockery": "^1.0",
+    "phpunit/phpunit": "^7.0",
+    "d11wtq/boris": "~1.0.10",
+    "doctrine/dbal": "^2.9"
   },
   "autoload": {
     "psr-4": {

phpunit.xml

@@ -1,20 +1,21 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <phpunit backupGlobals="false"
          backupStaticAttributes="false"
-         bootstrap="bootstrap.php"
+         beStrictAboutTestsThatDoNotTestAnything="false"
+         bootstrap="./bootstrap.php"
          colors="true"
          convertErrorsToExceptions="true"
          convertNoticesToExceptions="true"
          convertWarningsToExceptions="true"
+         failOnRisky="true"
+         failOnWarning="true"
          processIsolation="false"
+         stopOnError="false"
          stopOnFailure="false"
-         syntaxCheck="false">
+         verbose="true">
   <testsuites>
     <testsuite name="Baum Test Suite">
-      <file>tests/suite/QueryBuilderExtensionTest.php</file>
-      <file>tests/suite/NodeModelExtensionsTest.php</file>
-      <directory>tests/suite/Category</directory>
-      <directory>tests/suite/Cluster</directory>
+      <directory suffix="Test.php">./tests</directory>
     </testsuite>
   </testsuites>
 </phpunit>

tests/suite/BaumTestCase.php

@@ -1,6 +1,8 @@
 <?php
 
-class BaumTestCase extends PHPUnit_Framework_TestCase {
+use PHPUnit\Framework\TestCase;
+
+class BaumTestCase extends TestCase {
 
   public function assertArraysAreEqual($expected, $actual, $message = '') {
     $ex = var_export($expected, true);

tests/suite/NodeModelExtensionsTest.php

@@ -2,8 +2,9 @@
 
 use Mockery as m;
 use Illuminate\Database\Capsule\Manager as DB;
+use PHPUnit\Framework\TestCase;
 
-class NodeModelExtensionsTest extends PHPUnit_Framework_TestCase {
+class NodeModelExtensionsTest extends TestCase {
 
   public static function setUpBeforeClass() {
     with(new CategoryMigrator)->up();

tests/suite/QueryBuilderExtensionTest.php

@@ -5,8 +5,9 @@
 use Illuminate\Database\Query\Grammars\Grammar;
 use Illuminate\Database\Query\Processors\Processor;
 use Baum\Extensions\Query\Builder;
+use PHPUnit\Framework\TestCase;
 
-class QueryBuilderExtensionTest extends PHPUnit_Framework_TestCase {
+class QueryBuilderExtensionTest extends TestCase {
 
   public function tearDown() {
     m::close();