ext/uri: Increases test coverage

[NickSdot]

This is fully Codex made. I threw a coverage report at it to close uncovered lines/branch gaps. It came up with a tonne of edge cases; this PR is the result of me massaging it a bit, and after filtering out nonsense that did not actually increase coverage as well as things that seemed too esoteric. So everything here increases coverage even though things might seem already tested -- that's because of using slightly different api paths.

After #23286 and #23551 this is no longer fully Codex made, and was rather a starting point.

Coverage: ext/uri/tests

Base: 48d2b45e0748a0a83eddc841cb493a0ae817159a upstream/master
Tree: 8e4b223da30cf74a109274054999784586525836 working tree

+--------+----------+---------+--------------------+-------------------+--------+---------+
|        |    Tests | Sources |              Lines |          Branches |   Time |  Memory |
+--------+----------+---------+--------------------+-------------------+--------+---------+
| Base   |      519 |       7 | 2035/2281 (89.22%) | 733/1234 (59.40%) |  8.50s | 28.0 MB |
| Tree   |      563 |       7 | 2110/2281 (92.50%) | 792/1234 (64.18%) | 10.31s | 28.0 MB |
| Change | +44 / -0 |       0 |  +75 / -0 (+3.29%) | +59 / -0 (+4.78%) | +1.81s | +0.0 MB |
+--------+----------+---------+--------------------+-------------------+--------+---------+

[NickSdot]

Codex proposed the below which sounds sensible, and would add +4 lines/+2 branches. But not sure if it justifies adding another test helper. Thoughts?

C Code

static zend_result zend_test_uri_component_read_failure(
	ZEND_ATTRIBUTE_UNUSED void *uri,
	ZEND_ATTRIBUTE_UNUSED php_uri_component_read_mode read_mode,
	ZEND_ATTRIBUTE_UNUSED zval *retval
) {
	return FAILURE;
}

static ZEND_FUNCTION(zend_test_uri_parse_to_struct_failing_fragment)
{
	php_uri_parser parser = *php_uri_get_parser(NULL);
	parser.property_handler.fragment.read = zend_test_uri_component_read_failure;
	php_uri *uri = php_uri_parse_to_struct(
		&parser, ZEND_STRL("x://u:p@h:1/p?q#f"), PHP_URI_COMPONENT_READ_MODE_RAW, true
	);

	RETURN_BOOL(uri == NULL);
}

Test Code

--TEST--
Test zend_test_uri_parse_to_struct_failing_fragment() - error - fragment retrieval failure
--EXTENSIONS--
zend_test
--FILE--
<?php

var_dump(zend_test_uri_parse_to_struct_failing_fragment());

?>
--EXPECT--
bool(true)

[NickSdot]

Debatable if this is worth testing. Thoughts?