Add tests.

tests/TestCase/Validation/ValidationSetTest.php

@@ -19,6 +19,7 @@ namespace Cake\Test\TestCase\Validation;
 use Cake\TestSuite\TestCase;
 use Cake\Validation\ValidationRule;
 use Cake\Validation\ValidationSet;
+use PHPUnit\Framework\Error\Deprecated;
 
 /**
  * ValidationSetTest
@@ -208,4 +209,112 @@ class ValidationSetTest extends TestCase
         $set->remove('other');
         $this->assertFalse(isset($set['other']));
     }
+
+    /**
+     * Test requirePresence and isPresenceRequired methods
+     *
+     * @return void
+     */
+    public function testRequirePresence()
+    {
+        $set = new ValidationSet();
+
+        $this->assertFalse($set->isPresenceRequired());
+
+        $set->requirePresence(true);
+        $this->assertTrue($set->isPresenceRequired());
+
+        $set->requirePresence(false);
+        $this->assertFalse($set->isPresenceRequired());
+    }
+
+    /**
+     * Test isPresenceRequired deprecated setter
+     *
+     * @group deprecated
+     * @return void
+     */
+    public function testRequirePresenceDeprecated()
+    {
+        $this->deprecated(function () {
+            $set = new ValidationSet();
+
+            $this->assertFalse($set->isPresenceRequired());
+
+            $set->isPresenceRequired(true);
+            $this->assertTrue($set->isPresenceRequired());
+
+            $set->isPresenceRequired(false);
+            $this->assertFalse($set->isPresenceRequired());
+        });
+    }
+
+    /**
+     * Test isPresenceRequired method deprecation
+     *
+     * @group deprecated
+     * @return void
+     */
+    public function testIsPresenceRequiredDeprecation()
+    {
+        $this->expectException(Deprecated::class);
+        $this->expectExceptionMessage('ValidationSet::isPresenceRequired() is deprecated as a setter. Use ValidationSet::requirePresence() instead.');
+
+        $set = new ValidationSet();
+        $set->isPresenceRequired(true);
+    }
+
+    /**
+     * Test allowEmpty and isEmptyAllowed methods
+     *
+     * @return void
+     */
+    public function testAllowEmpty()
+    {
+        $set = new ValidationSet();
+
+        $this->assertFalse($set->isEmptyAllowed());
+
+        $set->allowEmpty(true);
+        $this->assertTrue($set->isEmptyAllowed());
+
+        $set->allowEmpty(false);
+        $this->assertFalse($set->isEmptyAllowed());
+    }
+
+    /**
+     * Test isEmptyAllowed deprecated setter
+     *
+     * @group deprecated
+     * @return void
+     */
+    public function testAllowEmptyDeprecated()
+    {
+        $this->deprecated(function () {
+            $set = new ValidationSet();
+
+            $this->assertFalse($set->isEmptyAllowed());
+
+            $set->isEmptyAllowed(true);
+            $this->assertTrue($set->isEmptyAllowed());
+
+            $set->isEmptyAllowed(false);
+            $this->assertFalse($set->isEmptyAllowed());
+        });
+    }
+
+    /**
+     * Test isEmptyAllowed method deprecation
+     *
+     * @group deprecated
+     * @return void
+     */
+    public function testIsEmptyAllowedDeprecation()
+    {
+        $this->expectException(Deprecated::class);
+        $this->expectExceptionMessage('ValidationSet::isEmptyAllowed() is deprecated as a setter. Use ValidationSet::allowEmpty() instead.');
+
+        $set = new ValidationSet();
+        $set->isEmptyAllowed(true);
+    }
 }