<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <link href="https://cdn.jsdelivr.net/npm/bootstrap@5.3.0-alpha1/dist/css/bootstrap.min.css" rel="stylesheet"
        integrity="sha384-GLhlTQ8iRABdZLl6O3oVMWSktQOp6b7In1Zl3/Jr59b6EGGoI1aFkw7cmDA6j6gD" crossorigin="anonymous">
    <link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/font-awesome/6.3.0/css/all.min.css"
        integrity="sha512-SzlrxWUlpfuzQ+pcUCosxcglQRNAq/DZjVsC0lE40xsADsfeQoEypE+enwcOiGjk/bSuGGKHEyjSoQ1zVisanQ=="
        crossorigin="anonymous" referrerpolicy="no-referrer" />
</head>
</html>
<?php

class IsValidNameTests extends AbstractUnitTests
{
    /**
     * @covers XML_Util::isValidName()
     */
    public function testIsValidNameForTagNameThatIsValid()
    {
        $tagName = "alpha-x_y_z.123";
        $result = XML_Util::isValidName($tagName);
        $this->assertTrue($result);
    }

    /**
     * @covers XML_Util::isValidName()
     */
    public function testIsValidNameForTagNameWithInvalidCharacter()
    {
        $tagName = "invalidTag?";
        $result = XML_Util::isValidName($tagName);
        $this->assertInstanceOf('PEAR_Error', $result);
        $expectedError = "XML names may only contain alphanumeric chars, period, hyphen, colon and underscores";
        $this->assertEquals($expectedError, $result->getMessage());
    }

    /**
     * @covers XML_Util::isValidName()
     */
    public function testIsValidNameForTagNameWithInvalidStartingCharacter()
    {
        $tagName = "1234five";
        $result = XML_Util::isValidName($tagName);
        $this->assertInstanceOf('PEAR_Error', $result);
        $expectedError = "XML names may only start with letter or underscore";
        $this->assertEquals($expectedError, $result->getMessage());
    }

    /**
     * @covers XML_Util::isValidName()
     */
    public function testIsValidNameForInt()
    {
        $tagName = 1;
        $result = XML_Util::isValidName($tagName);
        $this->assertInstanceOf('PEAR_Error', $result);
        $expectedError = "XML names may only start with letter or underscore";
        $this->assertEquals($expectedError, $result->getMessage());
    }

    /**
     * @covers XML_Util::isValidName()
     */
    public function testIsValidNameForEmptyString()
    {
        $tagName = '';
        $result = XML_Util::isValidName($tagName);
        $this->assertInstanceOf('PEAR_Error', $result);
        $expectedError = "XML names may only start with letter or underscore";
        $this->assertEquals($expectedError, $result->getMessage());
    }
}
