fix char is int

Author: gam6itko

src/DataConverter/Field/DBase/CharConverter.php

@@ -27,6 +27,6 @@ public function toBinaryString($value): string
             $value = $this->encoder->encode($value, 'utf-8', $outCharset);
         }
 
-        return str_pad($value ?? '', $this->column->length);
+        return str_pad((string) $value, $this->column->length);
     }
 }

tests/DataConverter/Field/DBase/CharConverterTest.php

@@ -0,0 +1,35 @@
+<?php
+
+declare(strict_types=1);
+
+namespace XBase\Tests\DataConverter\Field\DBase;
+
+use PHPUnit\Framework\TestCase;
+use XBase\DataConverter\Encoder\EncoderInterface;
+use XBase\DataConverter\Field\DBase\CharConverter;
+use XBase\Header\Column;
+use XBase\Table\Table;
+
+/**
+ * @coversDefaultClass \XBase\DataConverter\Field\DBase\CharConverter
+ */
+class CharConverterTest extends TestCase
+{
+    public function testNullValue(): void
+    {
+        $table = $this->createMock(Table::class);
+        $column = new Column(['length' => 1]);
+        $encoder = $this->createMock(EncoderInterface::class);
+        $c = new CharConverter($table, $column, $encoder);
+        self::assertSame(' ', $c->toBinaryString(null));
+    }
+
+    public function testIntValue(): void
+    {
+        $table = $this->createMock(Table::class);
+        $column = new Column(['length' => 1]);
+        $encoder = $this->createMock(EncoderInterface::class);
+        $c = new CharConverter($table, $column, $encoder);
+        self::assertSame('1', $c->toBinaryString(1));
+    }
+}