#!/bin/sh

# Checks tools/serve.py, the preview server that runs the built binary and
# hands its output back over HTTP. The cases live beside this file, in
# serve-split-check.py for how the CGI headers are told from the body and in
# serve-handler-check.py for a request served on a free loopback port with a
# stub in place of cgit. Nothing here touches a repository, so the fixtures
# stay unbuilt.

test_description='Check the preview server splits CGI output correctly'
CGIT_TEST_NO_CREATE_REPOS=YesPlease
. ./setup.sh

# A version manager's shim may find its interpreters through HOME, which the
# library has moved into the trash directory, so the interpreter is looked up
# once under the account's own. -I keeps the user's site packages and PYTHON
# variables out of the checks.
PYTHON=$(HOME=$USER_HOME python3 -I -c 'import sys; print(sys.executable)' 2>/dev/null)

# serve.py uses syntax that came with Python 3.8.
test_lazy_prereq PYTHON '
	test -n "$PYTHON" &&
	"$PYTHON" -I -c "import sys; sys.exit(sys.version_info < (3, 8))"
'

test_have_prereq PYTHON || {
	skip_all='Skipping preview server tests: no python3 3.8 or later'
	test_done
}

split_check() {
	"$PYTHON" -I "$TEST_OUTPUT_DIRECTORY/serve-split-check.py" \
		"$TEST_OUTPUT_DIRECTORY/.." "$1"
}

test_expect_success 'a CRLF blank line in the body stays in the body' '
	split_check crlf-in-body
'

test_expect_success 'an LF blank line after CRLF headers stays in the body' '
	split_check lf-in-body
'

test_expect_success 'a status line is taken off the headers' '
	split_check status
'

test_expect_success 'an empty body survives, as a redirect leaves one' '
	split_check empty-body
'

test_expect_success 'output with no blank line at all is all headers' '
	split_check no-blank-line
'

handler_check() {
	mkdir "$1" &&
	"$PYTHON" -I "$TEST_OUTPUT_DIRECTORY/serve-handler-check.py" \
		"$TEST_OUTPUT_DIRECTORY/.." "$PWD/$1" "$1"
}

test_expect_success 'a request reaches the CGI with the environment it needs' '
	handler_check environment
'

test_expect_success 'a request body reaches the CGI with its length' '
	handler_check post-body
'

test_expect_success 'a root-level asset is served from the data directory' '
	handler_check asset
'

test_expect_success 'a file of that name inside a repository goes to the CGI' '
	handler_check repository-file
'

test_expect_success 'a link out of the data directory is no asset' '
	handler_check asset-link-outside
'

test_expect_success 'a CGI that fails is answered with 500' '
	handler_check failing-cgi
'

test_expect_success 'a CGI that stalls is answered with 504' '
	handler_check stalled-cgi
'

test_expect_success 'a body over the cap is refused with 413' '
	handler_check oversized-body
'

test_expect_success 'a HEAD request gets the headers alone' '
	handler_check head
'

test_done