#!/bin/sh

# The rawdiff page serves a diff as plain text fit for patch. Every test
# runs the git command the page mirrors and compares the two byte for byte,
# over an ordinary commit, the parentless initial commit and a range.

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

test_expect_success 'generate foo/rawdiff' '
	cgit_url "foo/rawdiff" >tmp
'

test_expect_success 'compare with output of git-diff(1)' '
	git -C repos/foo diff HEAD^.. >expect &&
	strip_headers <tmp >actual &&
	test_cmp expect actual
'

test_expect_success 'find initial commit' '
	root=$(git -C repos/foo rev-list --max-parents=0 HEAD)
'

test_expect_success 'generate diff for initial commit' '
	cgit_url "foo/rawdiff&id=$root" >tmp
'

test_expect_success 'compare with output of git-diff-tree(1)' '
	git -C repos/foo diff-tree -p --no-commit-id --root "$root" >expect &&
	strip_headers <tmp >actual &&
	test_cmp expect actual
'

test_expect_success 'generate diff for multiple commits' '
	id=$(git -C repos/foo rev-parse HEAD) &&
	id2=$(git -C repos/foo rev-parse HEAD~3) &&
	cgit_url "foo/rawdiff&id=$id&id2=$id2" >tmp
'

test_expect_success 'compare with output of git-diff(1)' '
	git -C repos/foo diff HEAD~3..HEAD >expect &&
	strip_headers <tmp >actual &&
	test_cmp expect actual
'

test_expect_success 'a path limits the diff to that file' '
	cgit_url "foo/rawdiff/file-4&id=$id&id2=$id2" >tmp &&
	git -C repos/foo diff HEAD~3..HEAD -- file-4 >expect &&
	strip_headers <tmp >actual &&
	test_cmp expect actual &&
	grep "file-4" actual &&
	! grep "file-5" actual
'

test_done