#!/bin/sh

# The patch page serves mail ready patches, compared line for line against
# git format-patch for a single commit and for a range, once the CGI headers
# are stripped. The last check sets max-patch-count so a range wider than
# the limit comes back cut short.

test_description='Check content on patch page'
. ./setup.sh

# The signature sits on the second-to-last line, above the trailing blank.
check_cgit_signature() {
	tail -2 tmp | head -1 | grep "^cgit"
}

# The version the built binary signs its patches with.
CGIT_VERSION=$(sed -n "s/CGIT_VERSION = //p" \
	"$TEST_OUTPUT_DIRECTORY/../build/VERSION")

test_expect_success 'generate foo/patch' '
	cgit_query "url=foo/patch" >tmp
'

test_expect_success 'find `From:` line' '
	grep "^From: " tmp
'

test_expect_success 'find `Date:` line' '
	grep "^Date: " tmp
'

test_expect_success 'find `Subject:` line' '
	grep "^Subject: commit 5" tmp
'

test_expect_success 'find `cgit` signature' '
	check_cgit_signature
'

test_expect_success 'compare with output of git-format-patch(1)' '
	git --git-dir="$PWD/repos/foo/.git" format-patch --subject-prefix="" \
		--signature="cgit $CGIT_VERSION" --stdout HEAD^ >tmp2 &&
	strip_headers <tmp >tmp_ &&
	test_cmp tmp_ tmp2
'

test_expect_success 'find initial commit' '
	root=$(git --git-dir="$PWD/repos/foo/.git" \
		rev-list --max-parents=0 HEAD)
'

test_expect_success 'generate patch for initial commit' '
	cgit_query "url=foo/patch&id=$root" >tmp
'

test_expect_success 'find `cgit` signature on the initial commit' '
	check_cgit_signature
'

test_expect_success 'generate patches for multiple commits' '
	id=$(git --git-dir="$PWD/repos/foo/.git" rev-parse HEAD) &&
	id2=$(git --git-dir="$PWD/repos/foo/.git" rev-parse HEAD~3) &&
	cgit_query "url=foo/patch&id=$id&id2=$id2" >tmp
'

test_expect_success 'find `cgit` signature on the range' '
	check_cgit_signature
'

test_expect_success 'compare the range with git-format-patch(1)' '
	git --git-dir="$PWD/repos/foo/.git" format-patch --subject-prefix="" \
		-N --signature="cgit $CGIT_VERSION" --stdout \
		HEAD~3..HEAD >tmp2 &&
	strip_headers <tmp >tmp_ &&
	test_cmp tmp_ tmp2
'

test_expect_success 'max-patch-count bounds a patch range' '
	{
		echo "cache-size=0" &&
		echo "max-patch-count=2" &&
		echo "repo.url=foo" &&
		echo "repo.path=$PWD/repos/foo/.git"
	} >patchcountrc &&
	id=$(git --git-dir="$PWD/repos/foo/.git" rev-parse HEAD) &&
	root=$(git --git-dir="$PWD/repos/foo/.git" \
		rev-list --max-parents=0 HEAD) &&
	CGIT_CONFIG="$PWD/patchcountrc" \
		QUERY_STRING="url=foo/patch&id=$id&id2=$root" cgit >tmp &&
	test $(grep -c "^From " tmp) -eq 2
'

test_done