Coding standards.

tests/Numerics/RangeTest.php

@@ -0,0 +1,29 @@
+<?php
+
+namespace DNW\Skills\Tests\Numerics;
+
+use DNW\Skills\Numerics\Range;
+use DNW\Skills\Tests\TestCase;
+use Exception;
+
+class RangeTest extends TestCase
+{
+    public function testConstructInvalidParam(): void
+    {
+        $this->expectException(Exception::class);
+        $range = new Range(10, 5);
+    }
+
+    public function testFactoryInclusiveInvalidParam(): void
+    {
+        $this->expectException(Exception::class);
+        $range = Range::inclusive(10, 5);
+    }
+
+    public function testNormalUse(): void
+    {
+        $range = Range::inclusive(1, 10);
+        $this->assertEquals(1, $range->getMin());
+        $this->assertEquals(10, $range->getMax());
+    }
+}