init

sample/tests/CalculatorTest.php

@@ -0,0 +1,18 @@
+<?php
+
+use PHPUnit\Framework\TestCase;
+
+require_once 'vendor/autoload.php';
+
+class CalculatorTest extends TestCase {
+    private $calculator;
+
+    protected function setUp(): void {
+        $this->calculator = new App\Calculator();
+    }
+
+    public function testAdd() {
+        $this->assertEquals(4, $this->calculator->add(2, 2));
+        $this->assertEquals(0, $this->calculator->add(-1, 1));
+    }
+}