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mbSubstr.php
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204 lines (191 loc) · 5.36 KB
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<?php
/**
* @group compat
* @group security-153
*
* @covers ::mb_substr
* @covers ::_mb_substr
*/
class Tests_Compat_mbSubstr extends WP_UnitTestCase {
/**
* Test that mb_substr() is always available (either from PHP or WP).
*/
public function test_mb_substr_availability() {
$this->assertTrue(
in_array( 'mb_substr', get_defined_functions()['internal'], true ),
'Test runner should have `mbstring` extension active but doesn’t.'
);
}
/**
* @dataProvider data_utf8_substrings
*/
public function test_mb_substr( $input_string, $start, $length ) {
$this->assertSame(
mb_substr( $input_string, $start, $length, 'UTF-8' ),
_mb_substr( $input_string, $start, $length, 'UTF-8' )
);
}
/**
* @dataProvider data_utf8_substrings
*/
public function test_8bit_mb_substr( $input_string, $start, $length ) {
$this->assertSame(
mb_substr( $input_string, $start, $length, '8bit' ),
_mb_substr( $input_string, $start, $length, '8bit' )
);
}
/**
* Data provider.
*
* @return array[]
*/
public function data_utf8_substrings() {
return array(
'баба' => array( 'баба', 0, 3 ),
'баба' => array( 'баба', 0, -1 ),
'баба' => array( 'баба', 1, null ),
'баба' => array( 'баба', -3, null ),
'баба' => array( 'баба', -3, 2 ),
'баба' => array( 'баба', -2, 1 ),
'баба' => array( 'баба', 30, 1 ),
'баба' => array( 'баба', 15, -30 ),
'баба' => array( 'баба', -5, -5 ),
'баба' => array( 'баба', 5, -3 ),
'баба' => array( 'баба', -3, 5 ),
'I am your баба' => array( 'I am your баба', 0, 11 ),
);
}
/**
* @link https://github.com/php/php-src/blob/php-5.6.8/ext/mbstring/tests/mb_substr_basic.phpt
*/
public function test_mb_substr_phpcore_basic() {
$string_ascii = 'ABCDEF';
$string_mb = '日本語テキストです。01234５６７８９。';
$this->assertSame(
'DEF',
_mb_substr( $string_ascii, 3 ),
'Substring does not match expected for offset 3'
);
$this->assertSame(
'DEF',
_mb_substr( $string_ascii, 3, 5, 'ISO-8859-1' ),
'Substring does not match expected for offset 3, length 5, with iso charset'
);
// Specific latin-1 as that is the default the core PHP test operates under.
$this->assertSame(
"\xA5本語",
_mb_substr( $string_mb, 2, 7, 'latin-1' ),
'Substring does not match expected for offset 2, length 7, with latin-1 charset'
);
$this->assertSame(
'語テキストです',
_mb_substr( $string_mb, 2, 7, 'utf-8' ),
'Substring does not match expected for offset 2, length 7, with utf-8 charset'
);
}
/**
* @link https://github.com/php/php-src/blob/php-5.6.8/ext/mbstring/tests/mb_substr_variation1.phpt
*
* @dataProvider data_mb_substr_phpcore_input_type_handling
*
* @param mixed $input Input to pass to the function.
* @param string $expected Expected function output.
*/
public function test_mb_substr_phpcore_input_type_handling( $input, $expected ) {
$start = 0;
$length = 5;
$this->assertSame( $expected, _mb_substr( $input, $start, $length ) );
}
/**
* Data provider.
*
* @return array
*/
public function data_mb_substr_phpcore_input_type_handling() {
$heredoc = <<<EOT
hello world
EOT;
return array(
'integer zero' => array(
'input' => 0,
'expected' => '0',
),
'integer 1' => array(
'input' => 1,
'expected' => '1',
),
'positive integer' => array(
'input' => 12345,
'expected' => '12345',
),
'negative integer' => array(
'input' => -2345,
'expected' => '-2345',
),
// Float data.
'positive float with fraction' => array(
'input' => 10.5,
'expected' => '10.5',
),
'negative float with fraction' => array(
'input' => -10.5,
'expected' => '-10.5',
),
'float scientific whole number' => array(
'input' => 12.3456789000e10,
'expected' => '12345',
),
'float scientific with fraction' => array(
'input' => 12.3456789000E-10,
'expected' => '1.234',
),
'float, fraction only' => array(
'input' => .5,
'expected' => '0.5',
),
// Null data.
'null' => array(
'input' => null,
'expected' => '',
),
// Boolean data.
'boolean true' => array(
'input' => true,
'expected' => '1',
),
'boolean false' => array(
'input' => false,
'expected' => '',
),
// Empty data.
'empty string' => array(
'input' => '',
'expected' => '',
),
// String data.
'double quoted string' => array(
'input' => "string'",
'expected' => 'strin',
),
'single quoted string' => array(
'input' => 'string',
'expected' => 'strin',
),
'heredoc string' => array(
'input' => $heredoc,
'expected' => 'hello',
),
// Object data.
'object with __toString method' => array(
'input' => new ClassWithToStringForMbSubstr(),
'expected' => 'Class',
),
);
}
}
/* used in data_mb_substr_phpcore_input_type_handling() */
class ClassWithToStringForMbSubstr {
public function __toString() {
return 'Class object';
}
}