Example completed with uncovered lines for both cases

Author: Slamdunk

lib/D.php

@@ -0,0 +1,15 @@
+<?php
+
+declare(strict_types=1);
+
+namespace My;
+
+class D
+{
+    public function inArray(): bool
+    {
+        return \in_array(1, [
+            DType::OPT,
+        ], true);
+    }
+}

lib/DType.php

@@ -0,0 +1,10 @@
+<?php
+
+declare(strict_types=1);
+
+namespace My;
+
+class DType
+{
+    public const OPT = 1;
+}

phpunit.xml

@@ -12,6 +12,7 @@
       <file>./lib/A.php</file>
       <file>./lib/B.php</file>
       <file>./lib/C.php</file>
+      <file>./lib/D.php</file>
     </include>
   </coverage>
   <testsuite name="Foo">

tests/CTest.php

@@ -0,0 +1,18 @@
+<?php
+
+declare(strict_types=1);
+
+namespace MyTest;
+
+use PHPUnit\Framework\TestCase;
+
+/**
+ * @covers \My\C
+ */
+final class CTest extends TestCase
+{
+    public function testMe(): void
+    {
+        self::assertTrue(true);
+    }
+}

tests/DTest.php

@@ -0,0 +1,20 @@
+<?php
+
+declare(strict_types=1);
+
+namespace MyTest;
+
+use My\BType;
+use My\DType;
+use PHPUnit\Framework\TestCase;
+
+/**
+ * @covers \My\D
+ */
+final class DTest extends TestCase
+{
+    public function testMe(): void
+    {
+        self::assertSame(1, DType::OPT);
+    }
+}