File "BackfillFnTokenTest.php"
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<?php
/**
* Tests the backfilling of the T_FN token to PHP < 7.4.
*
* @author Greg Sherwood <gsherwood@squiz.net>
* @copyright 2019 Squiz Pty Ltd (ABN 77 084 670 600)
* @license https://github.com/squizlabs/PHP_CodeSniffer/blob/master/licence.txt BSD Licence
*/
namespace PHP_CodeSniffer\Tests\Core\Tokenizer;
use PHP_CodeSniffer\Tests\Core\AbstractMethodUnitTest;
class BackfillFnTokenTest extends AbstractMethodUnitTest
{
/**
* Test simple arrow functions.
*
* @covers PHP_CodeSniffer\Tokenizers\PHP::processAdditional
*
* @return void
*/
public function testSimple()
{
foreach (['/* testStandard */', '/* testMixedCase */'] as $comment) {
$token = $this->getTargetToken($comment, T_FN);
$this->backfillHelper($token);
$this->scopePositionTestHelper($token, 5, 12);
}
}//end testSimple()
/**
* Test whitespace inside arrow function definitions.
*
* @covers PHP_CodeSniffer\Tokenizers\PHP::processAdditional
*
* @return void
*/
public function testWhitespace()
{
$token = $this->getTargetToken('/* testWhitespace */', T_FN);
$this->backfillHelper($token);
$this->scopePositionTestHelper($token, 6, 13);
}//end testWhitespace()
/**
* Test comments inside arrow function definitions.
*
* @covers PHP_CodeSniffer\Tokenizers\PHP::processAdditional
*
* @return void
*/
public function testComment()
{
$token = $this->getTargetToken('/* testComment */', T_FN);
$this->backfillHelper($token);
$this->scopePositionTestHelper($token, 8, 15);
}//end testComment()
/**
* Test heredocs inside arrow function definitions.
*
* @covers PHP_CodeSniffer\Tokenizers\PHP::processAdditional
*
* @return void
*/
public function testHeredoc()
{
$token = $this->getTargetToken('/* testHeredoc */', T_FN);
$this->backfillHelper($token);
$this->scopePositionTestHelper($token, 4, 9);
}//end testHeredoc()
/**
* Test nested arrow functions.
*
* @covers PHP_CodeSniffer\Tokenizers\PHP::processAdditional
*
* @return void
*/
public function testNestedOuter()
{
$token = $this->getTargetToken('/* testNestedOuter */', T_FN);
$this->backfillHelper($token);
$this->scopePositionTestHelper($token, 5, 25);
}//end testNestedOuter()
/**
* Test nested arrow functions.
*
* @covers PHP_CodeSniffer\Tokenizers\PHP::processAdditional
*
* @return void
*/
public function testNestedInner()
{
$tokens = self::$phpcsFile->getTokens();
$token = $this->getTargetToken('/* testNestedInner */', T_FN);
$this->backfillHelper($token, true);
$expectedScopeOpener = ($token + 5);
$expectedScopeCloser = ($token + 16);
$this->assertSame($expectedScopeOpener, $tokens[$token]['scope_opener'], 'Scope opener is not the arrow token');
$this->assertSame($expectedScopeCloser, $tokens[$token]['scope_closer'], 'Scope closer is not the semicolon token');
$opener = $tokens[$token]['scope_opener'];
$this->assertSame($expectedScopeOpener, $tokens[$opener]['scope_opener'], 'Opener scope opener is not the arrow token');
$this->assertSame($expectedScopeCloser, $tokens[$opener]['scope_closer'], 'Opener scope closer is not the semicolon token');
$closer = $tokens[$token]['scope_closer'];
$this->assertSame(($token - 4), $tokens[$closer]['scope_opener'], 'Closer scope opener is not the arrow token of the "outer" arrow function (shared scope closer)');
$this->assertSame($expectedScopeCloser, $tokens[$closer]['scope_closer'], 'Closer scope closer is not the semicolon token');
}//end testNestedInner()
/**
* Test nested arrow functions with a shared closer.
*
* @covers PHP_CodeSniffer\Tokenizers\PHP::processAdditional
*
* @return void
*/
public function testNestedSharedCloser()
{
$tokens = self::$phpcsFile->getTokens();
$token = $this->getTargetToken('/* testNestedSharedCloserOuter */', T_FN);
$this->backfillHelper($token);
$this->scopePositionTestHelper($token, 4, 20);
$token = $this->getTargetToken('/* testNestedSharedCloserInner */', T_FN);
$this->backfillHelper($token, true);
$expectedScopeOpener = ($token + 4);
$expectedScopeCloser = ($token + 12);
$this->assertSame($expectedScopeOpener, $tokens[$token]['scope_opener'], 'Scope opener for "inner" arrow function is not the arrow token');
$this->assertSame($expectedScopeCloser, $tokens[$token]['scope_closer'], 'Scope closer for "inner" arrow function is not the TRUE token');
$opener = $tokens[$token]['scope_opener'];
$this->assertSame($expectedScopeOpener, $tokens[$opener]['scope_opener'], 'Opener scope opener for "inner" arrow function is not the arrow token');
$this->assertSame($expectedScopeCloser, $tokens[$opener]['scope_closer'], 'Opener scope closer for "inner" arrow function is not the semicolon token');
$closer = $tokens[$token]['scope_closer'];
$this->assertSame(($token - 4), $tokens[$closer]['scope_opener'], 'Closer scope opener for "inner" arrow function is not the arrow token of the "outer" arrow function (shared scope closer)');
$this->assertSame($expectedScopeCloser, $tokens[$closer]['scope_closer'], 'Closer scope closer for "inner" arrow function is not the TRUE token');
}//end testNestedSharedCloser()
/**
* Test arrow functions that call functions.
*
* @covers PHP_CodeSniffer\Tokenizers\PHP::processAdditional
*
* @return void
*/
public function testFunctionCall()
{
$token = $this->getTargetToken('/* testFunctionCall */', T_FN);
$this->backfillHelper($token);
$this->scopePositionTestHelper($token, 5, 17);
}//end testFunctionCall()
/**
* Test arrow functions that are included in chained calls.
*
* @covers PHP_CodeSniffer\Tokenizers\PHP::processAdditional
*
* @return void
*/
public function testChainedFunctionCall()
{
$token = $this->getTargetToken('/* testChainedFunctionCall */', T_FN);
$this->backfillHelper($token);
$this->scopePositionTestHelper($token, 5, 12, 'bracket');
}//end testChainedFunctionCall()
/**
* Test arrow functions that are used as function arguments.
*
* @covers PHP_CodeSniffer\Tokenizers\PHP::processAdditional
*
* @return void
*/
public function testFunctionArgument()
{
$token = $this->getTargetToken('/* testFunctionArgument */', T_FN);
$this->backfillHelper($token);
$this->scopePositionTestHelper($token, 8, 15, 'comma');
}//end testFunctionArgument()
/**
* Test arrow functions that use closures.
*
* @covers PHP_CodeSniffer\Tokenizers\PHP::processAdditional
*
* @return void
*/
public function testClosure()
{
$token = $this->getTargetToken('/* testClosure */', T_FN);
$this->backfillHelper($token);
$this->scopePositionTestHelper($token, 5, 60, 'comma');
}//end testClosure()
/**
* Test arrow functions using an array index.
*
* @covers PHP_CodeSniffer\Tokenizers\PHP::processAdditional
*
* @return void
*/
public function testArrayIndex()
{
$token = $this->getTargetToken('/* testArrayIndex */', T_FN);
$this->backfillHelper($token);
$this->scopePositionTestHelper($token, 8, 17, 'comma');
}//end testArrayIndex()
/**
* Test arrow functions with a return type.
*
* @covers PHP_CodeSniffer\Tokenizers\PHP::processAdditional
*
* @return void
*/
public function testReturnType()
{
$token = $this->getTargetToken('/* testReturnType */', T_FN);
$this->backfillHelper($token);
$this->scopePositionTestHelper($token, 11, 18, 'comma');
}//end testReturnType()
/**
* Test arrow functions that return a reference.
*
* @covers PHP_CodeSniffer\Tokenizers\PHP::processAdditional
*
* @return void
*/
public function testReference()
{
$token = $this->getTargetToken('/* testReference */', T_FN);
$this->backfillHelper($token);
$this->scopePositionTestHelper($token, 6, 9);
}//end testReference()
/**
* Test arrow functions that are grouped by parenthesis.
*
* @covers PHP_CodeSniffer\Tokenizers\PHP::processAdditional
*
* @return void
*/
public function testGrouped()
{
$token = $this->getTargetToken('/* testGrouped */', T_FN);
$this->backfillHelper($token);
$this->scopePositionTestHelper($token, 5, 8);
}//end testGrouped()
/**
* Test arrow functions that are used as array values.
*
* @covers PHP_CodeSniffer\Tokenizers\PHP::processAdditional
*
* @return void
*/
public function testArrayValue()
{
$token = $this->getTargetToken('/* testArrayValue */', T_FN);
$this->backfillHelper($token);
$this->scopePositionTestHelper($token, 4, 9, 'comma');
}//end testArrayValue()
/**
* Test arrow functions that are used as array values with no trailing comma.
*
* @covers PHP_CodeSniffer\Tokenizers\PHP::processAdditional
*
* @return void
*/
public function testArrayValueNoTrailingComma()
{
$token = $this->getTargetToken('/* testArrayValueNoTrailingComma */', T_FN);
$this->backfillHelper($token);
$this->scopePositionTestHelper($token, 4, 8, 'closing parenthesis');
}//end testArrayValueNoTrailingComma()
/**
* Test arrow functions that use the yield keyword.
*
* @covers PHP_CodeSniffer\Tokenizers\PHP::processAdditional
*
* @return void
*/
public function testYield()
{
$token = $this->getTargetToken('/* testYield */', T_FN);
$this->backfillHelper($token);
$this->scopePositionTestHelper($token, 5, 14);
}//end testYield()
/**
* Test arrow functions that use nullable namespace types.
*
* @covers PHP_CodeSniffer\Tokenizers\PHP::processAdditional
*
* @return void
*/
public function testNullableNamespace()
{
$token = $this->getTargetToken('/* testNullableNamespace */', T_FN);
$this->backfillHelper($token);
$this->scopePositionTestHelper($token, 15, 18);
}//end testNullableNamespace()
/**
* Test arrow functions that use the namespace operator in the return type.
*
* @covers PHP_CodeSniffer\Tokenizers\PHP::processAdditional
*
* @return void
*/
public function testNamespaceOperatorInTypes()
{
$token = $this->getTargetToken('/* testNamespaceOperatorInTypes */', T_FN);
$this->backfillHelper($token);
$this->scopePositionTestHelper($token, 16, 19);
}//end testNamespaceOperatorInTypes()
/**
* Test arrow functions that use self/parent/callable/array/static return types.
*
* @covers PHP_CodeSniffer\Tokenizers\PHP::processAdditional
*
* @return void
*/
public function testKeywordReturnTypes()
{
$tokens = self::$phpcsFile->getTokens();
$testMarkers = [
'Self',
'Parent',
'Callable',
'Array',
'Static',
];
foreach ($testMarkers as $marker) {
$token = $this->getTargetToken('/* test'.$marker.'ReturnType */', T_FN);
$this->backfillHelper($token);
$expectedScopeOpener = ($token + 11);
$expectedScopeCloser = ($token + 14);
$this->assertSame($expectedScopeOpener, $tokens[$token]['scope_opener'], "Scope opener is not the arrow token (for $marker)");
$this->assertSame($expectedScopeCloser, $tokens[$token]['scope_closer'], "Scope closer is not the semicolon token(for $marker)");
$opener = $tokens[$token]['scope_opener'];
$this->assertSame($expectedScopeOpener, $tokens[$opener]['scope_opener'], "Opener scope opener is not the arrow token(for $marker)");
$this->assertSame($expectedScopeCloser, $tokens[$opener]['scope_closer'], "Opener scope closer is not the semicolon token(for $marker)");
$closer = $tokens[$token]['scope_closer'];
$this->assertSame($expectedScopeOpener, $tokens[$closer]['scope_opener'], "Closer scope opener is not the arrow token(for $marker)");
$this->assertSame($expectedScopeCloser, $tokens[$closer]['scope_closer'], "Closer scope closer is not the semicolon token(for $marker)");
}
}//end testKeywordReturnTypes()
/**
* Test arrow function with a union parameter type.
*
* @covers PHP_CodeSniffer\Tokenizers\PHP::processAdditional
*
* @return void
*/
public function testUnionParamType()
{
$token = $this->getTargetToken('/* testUnionParamType */', T_FN);
$this->backfillHelper($token);
$this->scopePositionTestHelper($token, 13, 21);
}//end testUnionParamType()
/**
* Test arrow function with a union return type.
*
* @covers PHP_CodeSniffer\Tokenizers\PHP::processAdditional
*
* @return void
*/
public function testUnionReturnType()
{
$token = $this->getTargetToken('/* testUnionReturnType */', T_FN);
$this->backfillHelper($token);
$this->scopePositionTestHelper($token, 11, 18);
}//end testUnionReturnType()
/**
* Test arrow functions used in ternary operators.
*
* @covers PHP_CodeSniffer\Tokenizers\PHP::processAdditional
*
* @return void
*/
public function testTernary()
{
$tokens = self::$phpcsFile->getTokens();
$token = $this->getTargetToken('/* testTernary */', T_FN);
$this->backfillHelper($token);
$this->scopePositionTestHelper($token, 5, 40);
$token = $this->getTargetToken('/* testTernaryThen */', T_FN);
$this->backfillHelper($token);
$expectedScopeOpener = ($token + 8);
$expectedScopeCloser = ($token + 12);
$this->assertSame($expectedScopeOpener, $tokens[$token]['scope_opener'], 'Scope opener for THEN is not the arrow token');
$this->assertSame($expectedScopeCloser, $tokens[$token]['scope_closer'], 'Scope closer for THEN is not the semicolon token');
$opener = $tokens[$token]['scope_opener'];
$this->assertSame($expectedScopeOpener, $tokens[$opener]['scope_opener'], 'Opener scope opener for THEN is not the arrow token');
$this->assertSame($expectedScopeCloser, $tokens[$opener]['scope_closer'], 'Opener scope closer for THEN is not the semicolon token');
$closer = $tokens[$token]['scope_closer'];
$this->assertSame($expectedScopeOpener, $tokens[$closer]['scope_opener'], 'Closer scope opener for THEN is not the arrow token');
$this->assertSame($expectedScopeCloser, $tokens[$closer]['scope_closer'], 'Closer scope closer for THEN is not the semicolon token');
$token = $this->getTargetToken('/* testTernaryElse */', T_FN);
$this->backfillHelper($token, true);
$expectedScopeOpener = ($token + 8);
$expectedScopeCloser = ($token + 11);
$this->assertSame($expectedScopeOpener, $tokens[$token]['scope_opener'], 'Scope opener for ELSE is not the arrow token');
$this->assertSame($expectedScopeCloser, $tokens[$token]['scope_closer'], 'Scope closer for ELSE is not the semicolon token');
$opener = $tokens[$token]['scope_opener'];
$this->assertSame($expectedScopeOpener, $tokens[$opener]['scope_opener'], 'Opener scope opener for ELSE is not the arrow token');
$this->assertSame($expectedScopeCloser, $tokens[$opener]['scope_closer'], 'Opener scope closer for ELSE is not the semicolon token');
$closer = $tokens[$token]['scope_closer'];
$this->assertSame(($token - 24), $tokens[$closer]['scope_opener'], 'Closer scope opener for ELSE is not the arrow token of the "outer" arrow function (shared scope closer)');
$this->assertSame($expectedScopeCloser, $tokens[$closer]['scope_closer'], 'Closer scope closer for ELSE is not the semicolon token');
}//end testTernary()
/**
* Test typed arrow functions used in ternary operators.
*
* @covers PHP_CodeSniffer\Tokenizers\PHP::processAdditional
*
* @return void
*/
public function testTernaryWithTypes()
{
$tokens = self::$phpcsFile->getTokens();
$token = $this->getTargetToken('/* testTernaryWithTypes */', T_FN);
$this->backfillHelper($token);
$this->scopePositionTestHelper($token, 15, 27);
}//end testTernaryWithTypes()
/**
* Test arrow function returning a match control structure.
*
* @covers PHP_CodeSniffer\Tokenizers\PHP::processAdditional
*
* @return void
*/
public function testWithMatchValue()
{
$token = $this->getTargetToken('/* testWithMatchValue */', T_FN);
$this->backfillHelper($token);
$this->scopePositionTestHelper($token, 5, 44);
}//end testWithMatchValue()
/**
* Test arrow function returning a match control structure with something behind it.
*
* @covers PHP_CodeSniffer\Tokenizers\PHP::processAdditional
*
* @return void
*/
public function testWithMatchValueAndMore()
{
$token = $this->getTargetToken('/* testWithMatchValueAndMore */', T_FN);
$this->backfillHelper($token);
$this->scopePositionTestHelper($token, 5, 48);
}//end testWithMatchValueAndMore()
/**
* Test match control structure returning arrow functions.
*
* @param string $testMarker The comment prefacing the target token.
* @param int $openerOffset The expected offset of the scope opener in relation to the testMarker.
* @param int $closerOffset The expected offset of the scope closer in relation to the testMarker.
* @param string $expectedCloserType The type of token expected for the scope closer.
* @param string $expectedCloserFriendlyName A friendly name for the type of token expected for the scope closer
* to be used in the error message for failing tests.
*
* @dataProvider dataInMatchValue
* @covers PHP_CodeSniffer\Tokenizers\PHP::processAdditional
*
* @return void
*/
public function testInMatchValue($testMarker, $openerOffset, $closerOffset, $expectedCloserType, $expectedCloserFriendlyName)
{
$tokens = self::$phpcsFile->getTokens();
$token = $this->getTargetToken($testMarker, T_FN);
$this->backfillHelper($token);
$this->scopePositionTestHelper($token, $openerOffset, $closerOffset, $expectedCloserFriendlyName);
$this->assertSame($expectedCloserType, $tokens[($token + $closerOffset)]['type'], 'Mismatched scope closer type');
}//end testInMatchValue()
/**
* Data provider.
*
* @see testInMatchValue()
*
* @return array
*/
public function dataInMatchValue()
{
return [
'not_last_value' => [
'/* testInMatchNotLastValue */',
5,
11,
'T_COMMA',
'comma',
],
'last_value_with_trailing_comma' => [
'/* testInMatchLastValueWithTrailingComma */',
5,
11,
'T_COMMA',
'comma',
],
'last_value_without_trailing_comma_1' => [
'/* testInMatchLastValueNoTrailingComma1 */',
5,
10,
'T_CLOSE_PARENTHESIS',
'close parenthesis',
],
'last_value_without_trailing_comma_2' => [
'/* testInMatchLastValueNoTrailingComma2 */',
5,
11,
'T_VARIABLE',
'$y variable',
],
];
}//end dataInMatchValue()
/**
* Test arrow function nested within a method declaration.
*
* @covers PHP_CodeSniffer\Tokenizers\PHP::processAdditional
*
* @return void
*/
public function testNestedInMethod()
{
$token = $this->getTargetToken('/* testNestedInMethod */', T_FN);
$this->backfillHelper($token);
$this->scopePositionTestHelper($token, 5, 17);
}//end testNestedInMethod()
/**
* Verify that "fn" keywords which are not arrow functions get tokenized as T_STRING and don't
* have the extra token array indexes.
*
* @param string $testMarker The comment prefacing the target token.
* @param string $testContent The token content to look for.
*
* @dataProvider dataNotAnArrowFunction
* @covers PHP_CodeSniffer\Tokenizers\PHP::processAdditional
*
* @return void
*/
public function testNotAnArrowFunction($testMarker, $testContent='fn')
{
$tokens = self::$phpcsFile->getTokens();
$token = $this->getTargetToken($testMarker, [T_STRING, T_FN], $testContent);
$tokenArray = $tokens[$token];
$this->assertSame('T_STRING', $tokenArray['type'], 'Token tokenized as '.$tokenArray['type'].', not T_STRING');
$this->assertArrayNotHasKey('scope_condition', $tokenArray, 'Scope condition is set');
$this->assertArrayNotHasKey('scope_opener', $tokenArray, 'Scope opener is set');
$this->assertArrayNotHasKey('scope_closer', $tokenArray, 'Scope closer is set');
$this->assertArrayNotHasKey('parenthesis_owner', $tokenArray, 'Parenthesis owner is set');
$this->assertArrayNotHasKey('parenthesis_opener', $tokenArray, 'Parenthesis opener is set');
$this->assertArrayNotHasKey('parenthesis_closer', $tokenArray, 'Parenthesis closer is set');
}//end testNotAnArrowFunction()
/**
* Data provider.
*
* @see testNotAnArrowFunction()
*
* @return array
*/
public function dataNotAnArrowFunction()
{
return [
['/* testFunctionName */'],
[
'/* testConstantDeclaration */',
'FN',
],
[
'/* testConstantDeclarationLower */',
'fn',
],
['/* testStaticMethodName */'],
['/* testPropertyAssignment */'],
[
'/* testAnonClassMethodName */',
'fN',
],
['/* testNonArrowStaticMethodCall */'],
[
'/* testNonArrowConstantAccess */',
'FN',
],
[
'/* testNonArrowConstantAccessMixed */',
'Fn',
],
['/* testNonArrowObjectMethodCall */'],
[
'/* testNonArrowObjectMethodCallUpper */',
'FN',
],
[
'/* testNonArrowNamespacedFunctionCall */',
'Fn',
],
['/* testNonArrowNamespaceOperatorFunctionCall */'],
['/* testNonArrowFunctionNameWithUnionTypes */'],
['/* testLiveCoding */'],
];
}//end dataNotAnArrowFunction()
/**
* Helper function to check that all token keys are correctly set for T_FN tokens.
*
* @param int $token The T_FN token to check.
* @param bool $skipScopeCloserCheck Whether to skip the scope closer check.
* This should be set to "true" when testing nested arrow functions,
* where the "inner" arrow function shares a scope closer with the
* "outer" arrow function, as the 'scope_condition' for the scope closer
* of the "inner" arrow function will point to the "outer" arrow function.
*
* @return void
*/
private function backfillHelper($token, $skipScopeCloserCheck=false)
{
$tokens = self::$phpcsFile->getTokens();
$this->assertTrue(array_key_exists('scope_condition', $tokens[$token]), 'Scope condition is not set');
$this->assertTrue(array_key_exists('scope_opener', $tokens[$token]), 'Scope opener is not set');
$this->assertTrue(array_key_exists('scope_closer', $tokens[$token]), 'Scope closer is not set');
$this->assertSame($tokens[$token]['scope_condition'], $token, 'Scope condition is not the T_FN token');
$this->assertTrue(array_key_exists('parenthesis_owner', $tokens[$token]), 'Parenthesis owner is not set');
$this->assertTrue(array_key_exists('parenthesis_opener', $tokens[$token]), 'Parenthesis opener is not set');
$this->assertTrue(array_key_exists('parenthesis_closer', $tokens[$token]), 'Parenthesis closer is not set');
$this->assertSame($tokens[$token]['parenthesis_owner'], $token, 'Parenthesis owner is not the T_FN token');
$opener = $tokens[$token]['scope_opener'];
$this->assertTrue(array_key_exists('scope_condition', $tokens[$opener]), 'Opener scope condition is not set');
$this->assertTrue(array_key_exists('scope_opener', $tokens[$opener]), 'Opener scope opener is not set');
$this->assertTrue(array_key_exists('scope_closer', $tokens[$opener]), 'Opener scope closer is not set');
$this->assertSame($tokens[$opener]['scope_condition'], $token, 'Opener scope condition is not the T_FN token');
$this->assertSame(T_FN_ARROW, $tokens[$opener]['code'], 'Arrow scope opener not tokenized as T_FN_ARROW (code)');
$this->assertSame('T_FN_ARROW', $tokens[$opener]['type'], 'Arrow scope opener not tokenized as T_FN_ARROW (type)');
$closer = $tokens[$token]['scope_closer'];
$this->assertTrue(array_key_exists('scope_condition', $tokens[$closer]), 'Closer scope condition is not set');
$this->assertTrue(array_key_exists('scope_opener', $tokens[$closer]), 'Closer scope opener is not set');
$this->assertTrue(array_key_exists('scope_closer', $tokens[$closer]), 'Closer scope closer is not set');
if ($skipScopeCloserCheck === false) {
$this->assertSame($tokens[$closer]['scope_condition'], $token, 'Closer scope condition is not the T_FN token');
}
$opener = $tokens[$token]['parenthesis_opener'];
$this->assertTrue(array_key_exists('parenthesis_owner', $tokens[$opener]), 'Opening parenthesis owner is not set');
$this->assertSame($tokens[$opener]['parenthesis_owner'], $token, 'Opening parenthesis owner is not the T_FN token');
$closer = $tokens[$token]['parenthesis_closer'];
$this->assertTrue(array_key_exists('parenthesis_owner', $tokens[$closer]), 'Closing parenthesis owner is not set');
$this->assertSame($tokens[$closer]['parenthesis_owner'], $token, 'Closing parenthesis owner is not the T_FN token');
}//end backfillHelper()
/**
* Helper function to check that the scope opener/closer positions are correctly set for T_FN tokens.
*
* @param int $token The T_FN token to check.
* @param int $openerOffset The expected offset of the scope opener in relation to
* the fn keyword.
* @param int $closerOffset The expected offset of the scope closer in relation to
* the fn keyword.
* @param string $expectedCloserType Optional. The type of token expected for the scope closer.
*
* @return void
*/
private function scopePositionTestHelper($token, $openerOffset, $closerOffset, $expectedCloserType='semicolon')
{
$tokens = self::$phpcsFile->getTokens();
$expectedScopeOpener = ($token + $openerOffset);
$expectedScopeCloser = ($token + $closerOffset);
$this->assertSame($expectedScopeOpener, $tokens[$token]['scope_opener'], 'Scope opener is not the arrow token');
$this->assertSame($expectedScopeCloser, $tokens[$token]['scope_closer'], 'Scope closer is not the '.$expectedCloserType.' token');
$opener = $tokens[$token]['scope_opener'];
$this->assertSame($expectedScopeOpener, $tokens[$opener]['scope_opener'], 'Opener scope opener is not the arrow token');
$this->assertSame($expectedScopeCloser, $tokens[$opener]['scope_closer'], 'Opener scope closer is not the '.$expectedCloserType.' token');
$closer = $tokens[$token]['scope_closer'];
$this->assertSame($expectedScopeOpener, $tokens[$closer]['scope_opener'], 'Closer scope opener is not the arrow token');
$this->assertSame($expectedScopeCloser, $tokens[$closer]['scope_closer'], 'Closer scope closer is not the '.$expectedCloserType.' token');
}//end scopePositionTestHelper()
}//end class