Add test that ensures optional param matching behavior.

Author: loganhenson

src/Data/Maybe/Maybe.php

@@ -3,10 +3,10 @@
 namespace Vector\Data\Maybe;
 
 use Vector\Core\Module;
+use Vector\Typeclass\MonadInterface;
 use Vector\Typeclass\SimpleApplicativeDefault;
 use Vector\Typeclass\SimpleFunctorDefault;
 use Vector\Typeclass\SimpleMonadDefault;
-use Vector\Typeclass\MonadInterface;
 
 /**
  * @method static callable just($value)

src/Data/Result/Result.php

@@ -4,10 +4,10 @@
 
 use Exception;
 use Vector\Core\Module;
+use Vector\Typeclass\MonadInterface;
 use Vector\Typeclass\SimpleApplicativeDefault;
 use Vector\Typeclass\SimpleFunctorDefault;
 use Vector\Typeclass\SimpleMonadDefault;
-use Vector\Typeclass\MonadInterface;
 
 /**
  * @method static callable ok($value)

tests/Control/PatternTest.php

@@ -178,6 +178,25 @@ public function it_can_match_arity_on_custom_objects()
         $this->assertEquals('ok', $match(new TestObject(), new TestObject()));
     }
 
+    /** @test */
+    public function it_uses_first_match_arity_on_optional_params()
+    {
+        $matchTest1 = Pattern::match([
+            fn (TestObject $object) => 'first',
+            fn (TestObject $object, ?TestObject $object2) => 'second',
+            fn (TestObject $object, TestObject $object2 = null) => 'third',
+        ]);
+
+        $matchTest2 = Pattern::match([
+            fn (TestObject $object) => 'first',
+            fn (TestObject $object, TestObject $object2 = null) => 'second',
+            fn (TestObject $object, TestObject $object2) => 'third',
+        ]);
+
+        $this->assertEquals('second', $matchTest1(new TestObject(), new TestObject()));
+        $this->assertEquals('second', $matchTest2(new TestObject(), new TestObject()));
+    }
+
     /** @test */
     function throws_on_no_matching_pattern()
     {

tests/Core/ModuleTest.php

@@ -3,8 +3,8 @@
 namespace Vector\Test\Core;
 
 use PHPUnit\Framework\TestCase;
-use Vector\Core\Module;
 use Vector\Core\Exception\FunctionNotFoundException;
+use Vector\Core\Module;
 use Vector\Test\Core\Stub\TestFunctions;
 
 class ModuleTest extends TestCase

tests/Lib/ArraysTest.php

@@ -3,9 +3,9 @@
 namespace Vector\Test\Lib;
 
 use PHPUnit\Framework\TestCase;
+use Vector\Core\Exception\ElementNotFoundException;
 use Vector\Core\Exception\EmptyListException;
 use Vector\Core\Exception\IndexOutOfBoundsException;
-use Vector\Core\Exception\ElementNotFoundException;
 use Vector\Lib\Arrays;
 
 class ArraysTest extends TestCase