Identify Windows CI failures: test code bugs, not real network issues

[Copilot]

Investigates cURL error 77 failures on Windows CI (windows-2025 runner) that were blocking WordPress downloads and all behat scenarios.

Root cause analysis

Unit tests (wp-cli/wp-cli, job 63924672742) — three failures, none are real connectivity issues:

• testHttpRequestBadCAcert (2 failures): tempnam(sys_get_temp_dir(), 'wp-cli-badcacert-pem-') truncates to a 3-char prefix on Windows, producing wp-5EFE.tmp. The cURL error 77 message on Windows is "error adding trust anchors from file: ...\wp-5EFE.tmp" vs. the asserted "error setting certificate". The wp-5EFE.tmp path seen in the original error report is this intentional bad-cert file, not a real SSL failure.

• WpOrgApiTest::test_http_request_verify@insecure: Mock_Requests_Transport guards with strpos($verify, sys_get_temp_dir()). On Windows, sys_get_temp_dir() may return an 8.3 short path (RUNNER~1) while tempnam() returns the long path (runneradmin), causing the guard to silently return false and skip the verify → false conversion.

• FileCacheTest::test_import (2 errors): ZipArchive not found — the zip extension is included in setup-php for functional tests but missing for unit tests in reusable-testing.yml.

Behat tests (wp-cli/wp-cli, job 63924669886) — all 203 scenarios fail due to Windows shell quoting: cmd.exe treats single quotes as literals (not string delimiters), so wp eval 'list( $a, $b ) = ...' is tokenized at spaces. WP-CLI receives each token as a separate positional argument.

Where fixes belong

Issue	Repository
testHttpRequestBadCAcert assertion	wp-cli/wp-cli
Mock_Requests_Transport path normalization	wp-cli/wp-cli
Missing zip extension for unit tests	wp-cli/.github
Single-quote quoting in wp eval feature tests	wp-cli/wp-cli

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[swissspidy]

@copilot so no actual network issues? why are tests failing at wp-cli/wp-cli#6245 then? apparently the wp core download in wp-cli-tests fails, see https://github.com/wp-cli/wp-cli/actions/runs/22116136930/job/63924669886?pr=6245