fix(IsTinyChar): 增加 IsTinyChar 校验规则

lib/IsTinyChar.php

@@ -0,0 +1,22 @@
+<?php
+/**
+ * Wei Framework
+ *
+ * @copyright   Copyright (c) 2008-2020 Twin Huang
+ * @license     http://opensource.org/licenses/mit-license.php MIT License
+ */
+
+namespace Wei;
+
+/**
+ * Check if the input is a string of 255 characters or less
+ *
+ * @author      Twin Huang <twinhuang@qq.com>
+ */
+class IsTinyChar extends IsChar
+{
+    /**
+     * @var int
+     */
+    protected $maxLength = 255;
+}

tests/unit/IsTinyCharTest.php

@@ -0,0 +1,44 @@
+<?php
+
+namespace WeiTest;
+
+/**
+ * @internal
+ */
+final class IsTinyCharTest extends BaseValidatorTestCase
+{
+    /**
+     * @dataProvider providerForLength
+     * @param mixed $input
+     */
+    public function testLength($input)
+    {
+        $this->assertTrue($this->isTinyChar($input));
+    }
+
+    /**
+     * @dataProvider providerForNotLength
+     * @param mixed $input
+     */
+    public function testNotLength($input)
+    {
+        $this->assertFalse($this->isTinyChar($input));
+    }
+
+    public function providerForLength()
+    {
+        return [
+            ['i♥u4'],
+            [str_repeat('1', 255)],
+            [str_repeat('😊', 255)],
+        ];
+    }
+
+    public function providerForNotLength()
+    {
+        return [
+            [str_repeat('1', 256)],
+            [str_repeat('😊', 255) . '1'],
+        ];
+    }
+}