#!/bin/sh

test_description='test log -L'
. ./test-lib.sh

test_expect_success 'setup (import history)' '
	git fast-import < "$TEST_DIRECTORY"/t4211/history.export &&
	git reset --hard
'

canned_test_1 () {
	test_expect_$1 "$2" "
		git log $2 >actual &&
		test_cmp \"\$TEST_DIRECTORY\"/t4211/expect.$3 actual
	"
}

canned_test () {
	canned_test_1 success "$@"
}
canned_test_failure () {
	canned_test_1 failure "$@"
}

test_bad_opts () {
	test_expect_success "invalid args: $1" "
		test_must_fail git log $1 2>errors &&
		grep '$2' errors
	"
}

canned_test "-L 4,12:a.c simple" simple-f
canned_test "-L 4,+9:a.c simple" simple-f
canned_test "-L '/long f/,/^}/:a.c' simple" simple-f
canned_test "-L :f:a.c simple" simple-f-to-main

canned_test "-L '/main/,/^}/:a.c' simple" simple-main
canned_test "-L :main:a.c simple" simple-main-to-end

canned_test "-L 1,+4:a.c simple" beginning-of-file

canned_test "-L 20:a.c simple" end-of-file

canned_test "-L '/long f/',/^}/:a.c -L /main/,/^}/:a.c simple" two-ranges
canned_test "-L 24,+1:a.c simple" vanishes-early

canned_test "-M -L '/long f/,/^}/:b.c' move-support" move-support-f
canned_test "-M -L ':f:b.c' parallel-change" parallel-change-f-to-main

canned_test "-L 4,12:a.c -L :main:a.c simple" multiple
canned_test "-L 4,18:a.c -L :main:a.c simple" multiple-overlapping
canned_test "-L :main:a.c -L 4,18:a.c simple" multiple-overlapping
canned_test "-L 4:a.c -L 8,12:a.c simple" multiple-superset
canned_test "-L 8,12:a.c -L 4:a.c simple" multiple-superset

test_bad_opts "-L" "switch.*requires a value"
test_bad_opts "-L b.c" "argument.*not of the form"
test_bad_opts "-L 1:" "argument.*not of the form"
test_bad_opts "-L 1:nonexistent" "There is no path"
test_bad_opts "-L 1:simple" "There is no path"
test_bad_opts "-L '/foo:b.c'" "argument.*not of the form"
test_bad_opts "-L 1000:b.c" "has only.*lines"
test_bad_opts "-L 1,1000:b.c" "has only.*lines"
test_bad_opts "-L :b.c" "argument.*not of the form"
test_bad_opts "-L :foo:b.c" "no match"

# There is a separate bug when an empty -L range is the first -L encountered,
# thus to demonstrate this particular bug, the empty -L range must follow a
# non-empty -L range.
test_expect_success '-L {empty-range} (any -L)' '
	n=$(expr $(wc -l <b.c) + 1) &&
	git log -L1,1:b.c -L$n:b.c
'

test_expect_success '-L {empty-range} (first -L)' '
	n=$(expr $(wc -l <b.c) + 1) &&
	git log -L$n:b.c
'

test_done