#!/bin/sh

# Runs the tidy checker over one page of most kinds cgit renders, caring only
# about the shape of the markup. What the pages say is the business of the
# t01xx scripts. Tidy is optional and old versions predate the elements cgit
# uses, so the file steps aside when a usable one cannot be found.

test_description='Validate html with tidy'
. ./setup.sh

# Tidy reads what it is given as a whole document, so the response headers are
# dropped before it sees the page, and an empty page would only draw warnings.
# Tidy leaves with 1 for warnings and 2 for errors, and only an error is worth
# failing the test over.
tidy_page() {
	strip_headers <"$1.out" >"$1" &&
	test -s "$1" || return 1
	tidy -eq "$1"
	test $? != 2
}

# Validates the page at the url given, which has to render whole, through a
# config named second for the pages the shared config keeps turned off.
test_url() {
	tidy_file=tidy-$(printf '%s' "${1:-index}" | tr / -) &&
	if test -n "$2"
	then
		cgit_ok "$2" "url=$1"
	else
		cgit_ok_url "$1"
	fi >"$tidy_file.out" &&
	tidy_page "$tidy_file"
}

# Releases of tidy that predate HTML5 reject the semantic elements cgit emits,
# header, nav, main and footer among them, reporting each as an error, so only
# a tidy new enough to understand them will do.
test_lazy_prereq TIDY '
	cat >probe.html <<-\EOF &&
	<!DOCTYPE html>
	<html lang="en"><head><title>t</title></head><body><header>x</header></body></html>
	EOF
	tidy -q -e probe.html >/dev/null 2>&1
	test $? -lt 2
'

test_have_prereq TIDY || {
	skip_all='Skipping html validation tests: no tidy that knows HTML5'
	test_done
}

test_expect_success 'index page' 'test_url ""'
test_expect_success 'foo' 'test_url "foo"'
test_expect_success 'foo/log' 'test_url "foo/log"'
test_expect_success 'foo/tree' 'test_url "foo/tree"'
test_expect_success 'foo/tree/file-1' 'test_url "foo/tree/file-1"'
test_expect_success 'foo/commit' 'test_url "foo/commit"'
test_expect_success 'foo/diff' 'test_url "foo/diff"'
test_expect_success 'foo/refs' 'test_url "foo/refs"'
test_expect_success 'error page' '
	cgit_url "no-such-repo" >tidy-error.out &&
	grep "^Status: 404" tidy-error.out &&
	tidy_page tidy-error
'

# Stats and blame stay off in the shared config, so their pages validate
# through a config of their own.
test_expect_success 'set up a features config' '
	cgitrc_repo featrc feat max-stats=year enable-blame=1 "repo.path=$PWD/repos/foo/.git"
'

test_expect_success 'stats page' 'test_url "feat/stats/" featrc'
test_expect_success 'blame page' 'test_url "feat/blame/file-1" featrc'

test_done