Allow MD- prefix for Moldova postal codes (#55)

Co-authored-by: Alexander Ivanitsa <[email protected]>

src/ZipCodeValidator/Constraints/ZipCodeValidator.php

@@ -129,7 +129,7 @@ class ZipCodeValidator extends ConstraintValidator
         'LV' => '(LV-)?\\d{4}',
         'MA' => '\\d{5}',
         'MC' => '980\\d{2}',
-        'MD' => '\\d{4}',
+        'MD' => '(MD-)?\\d{4}',
         'ME' => '8\\d{4}',
         'MF' => '9[78][01]\\d{2}',
         'MG' => '\\d{3}',

tests/Constraints/MdZipCodeValidatorTest.php

@@ -0,0 +1,94 @@
+<?php
+
+namespace ZipCodeValidator\Tests\Constraints;
+
+use PHPUnit\Framework\MockObject\MockObject;
+use PHPUnit\Framework\TestCase;
+use Symfony\Component\Validator\Context\ExecutionContext;
+use Symfony\Component\Validator\Violation\ConstraintViolationBuilderInterface;
+use ZipCodeValidator\Constraints\ZipCode;
+use ZipCodeValidator\Constraints\ZipCodeValidator;
+
+class MdZipCodeValidatorTest extends TestCase
+{
+    protected ZipCodeValidator $validator;
+
+    public function setUp(): void
+    {
+        $this->validator = new ZipCodeValidator;
+    }
+
+    /**
+     * @dataProvider getValidMoldovaZipCodes
+     */
+    public function testValidZipcodes(string $zipCode): void
+    {
+        $constraint = new ZipCode('MD');
+
+        /** @var ExecutionContext|MockObject $contextMock */
+        $contextMock = $this->getMockBuilder(ExecutionContext::class)
+            ->disableOriginalConstructor()
+            ->getMock();
+
+        # be sure that buildViolation never gets called
+        $contextMock->expects($this->never())->method('buildViolation');
+        $contextMock->setConstraint($constraint);
+
+        $this->validator->initialize($contextMock);
+        $this->validator->validate($zipCode, $constraint);
+    }
+
+    /**
+     * Valid Moldova postal codes are four-digit numbers, optionally prefixed with "MD-".
+     * @see https://en.wikipedia.org/wiki/Postal_codes_in_Moldova
+     */
+    public static function getValidMoldovaZipCodes(): array
+    {
+        return [
+            ['1234'],
+            ['0123'],
+            ['9876'],
+            ['MD-1234'],
+            ['MD-0123'],
+            ['MD-9876'],
+        ];
+    }
+
+    /**
+     * @dataProvider getInvalidMoldovaZipCodes
+     */
+    public function testInvalidZipcodes(string $zipCode): void
+    {
+        $constraint = new ZipCode('MD');
+
+        $violation = $this->createMock(ConstraintViolationBuilderInterface::class);
+        $violation->expects($this->once())->method('setParameter')->willReturnSelf();
+
+        /** @var ExecutionContext|MockObject $contextMock */
+        $contextMock = $this->getMockBuilder(ExecutionContext::class)
+            ->disableOriginalConstructor()
+            ->getMock();
+
+        # be sure that buildViolation never gets called
+        $contextMock->expects($this->once())->method('buildViolation')->willReturn($violation);
+        $contextMock->setConstraint($constraint);
+
+        $this->validator->initialize($contextMock);
+        $this->validator->validate($zipCode, $constraint);
+    }
+
+    /**
+     * Valid Moldova postal codes are four-digit numbers, optionally prefixed with "MD-".
+     * @see https://en.wikipedia.org/wiki/Postal_codes_in_Moldova
+     */
+    public static function getInvalidMoldovaZipCodes(): array
+    {
+        return [
+            ['123'],
+            ['12345'],
+            ['MD12345'],
+            ['MO-12345'],
+            ['MD-12345'],
+        ];
+    }
+}