From c8bae7493d2f2910b57f13ded012e86bdcfb0532 Mon Sep 17 00:00:00 2001
From: Daniel Baumann <daniel.baumann@progress-linux.org>
Date: Sun, 7 Apr 2024 16:47:53 +0200
Subject: Adding upstream version 1:2.39.2.

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
---
 t/t4204-patch-id.sh | 313 ++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 313 insertions(+)
 create mode 100755 t/t4204-patch-id.sh

(limited to 't/t4204-patch-id.sh')

diff --git a/t/t4204-patch-id.sh b/t/t4204-patch-id.sh
new file mode 100755
index 0000000..a7fa94c
--- /dev/null
+++ b/t/t4204-patch-id.sh
@@ -0,0 +1,313 @@
+#!/bin/sh
+
+test_description='git patch-id'
+
+GIT_TEST_DEFAULT_INITIAL_BRANCH_NAME=main
+export GIT_TEST_DEFAULT_INITIAL_BRANCH_NAME
+
+. ./test-lib.sh
+
+test_expect_success 'setup' '
+	str="ab cd ef gh ij kl mn op" &&
+	test_write_lines $str >foo &&
+	test_write_lines $str >bar &&
+	git add foo bar &&
+	git commit -a -m initial &&
+	test_write_lines $str b >foo &&
+	test_write_lines $str b >bar &&
+	git commit -a -m first &&
+	git checkout -b same main &&
+	git commit --amend -m same-msg &&
+	git checkout -b notsame main &&
+	echo c >foo &&
+	echo c >bar &&
+	git commit --amend -a -m notsame-msg &&
+	git checkout -b with_space main~ &&
+	cat >foo <<-\EOF &&
+	a  b
+	c d
+	e    f
+	  g   h
+	    i   j
+	k l
+	m   n
+	op
+	EOF
+	cp foo bar &&
+	git add foo bar &&
+	git commit --amend -m "with spaces" &&
+	test_write_lines bar foo >bar-then-foo &&
+	test_write_lines foo bar >foo-then-bar
+
+'
+
+test_expect_success 'patch-id output is well-formed' '
+	git log -p -1 >log.output &&
+	git patch-id <log.output >output &&
+	grep "^$OID_REGEX $(git rev-parse HEAD)$" output
+'
+
+#calculate patch id. Make sure output is not empty.
+calc_patch_id () {
+	patch_name="$1"
+	shift
+	git patch-id "$@" >patch-id.output &&
+	sed "s/ .*//" patch-id.output >patch-id_"$patch_name" &&
+	test_line_count -eq 1 patch-id_"$patch_name"
+}
+
+get_top_diff () {
+	git log -p -1 "$@" -O bar-then-foo --full-index --
+}
+
+get_patch_id () {
+	get_top_diff "$1" >top-diff.output &&
+	calc_patch_id <top-diff.output "$@"
+}
+
+test_expect_success 'patch-id detects equality' '
+	get_patch_id main &&
+	get_patch_id same &&
+	test_cmp patch-id_main patch-id_same
+'
+
+test_expect_success 'patch-id detects inequality' '
+	get_patch_id main &&
+	get_patch_id notsame &&
+	! test_cmp patch-id_main patch-id_notsame
+'
+test_expect_success 'patch-id detects equality binary' '
+	cat >.gitattributes <<-\EOF &&
+	foo binary
+	bar binary
+	EOF
+	get_patch_id main &&
+	get_patch_id same &&
+	git log -p -1 --binary main >top-diff.output &&
+	calc_patch_id <top-diff.output main_binpatch &&
+	git log -p -1 --binary same >top-diff.output &&
+	calc_patch_id <top-diff.output same_binpatch &&
+	test_cmp patch-id_main patch-id_main_binpatch &&
+	test_cmp patch-id_same patch-id_same_binpatch &&
+	test_cmp patch-id_main patch-id_same &&
+	test_when_finished "rm .gitattributes"
+'
+
+test_expect_success 'patch-id detects inequality binary' '
+	cat >.gitattributes <<-\EOF &&
+	foo binary
+	bar binary
+	EOF
+	get_patch_id main &&
+	get_patch_id notsame &&
+	! test_cmp patch-id_main patch-id_notsame &&
+	test_when_finished "rm .gitattributes"
+'
+
+test_expect_success 'patch-id supports git-format-patch output' '
+	get_patch_id main &&
+	git checkout same &&
+	git format-patch -1 --stdout >format-patch.output &&
+	calc_patch_id same <format-patch.output &&
+	test_cmp patch-id_main patch-id_same &&
+	set $(git patch-id <format-patch.output) &&
+	test "$2" = $(git rev-parse HEAD)
+'
+
+test_expect_success 'whitespace is irrelevant in footer' '
+	get_patch_id main &&
+	git checkout same &&
+	git format-patch -1 --stdout >format-patch.output &&
+	sed "s/ \$//" format-patch.output | calc_patch_id same &&
+	test_cmp patch-id_main patch-id_same
+'
+
+cmp_patch_id () {
+	if
+		test "$1" = "relevant"
+	then
+		! test_cmp patch-id_"$2" patch-id_"$3"
+	else
+		test_cmp patch-id_"$2" patch-id_"$3"
+	fi
+}
+
+test_patch_id_file_order () {
+	relevant="$1"
+	shift
+	name="order-${1}-$relevant"
+	shift
+	get_top_diff "main" >top-diff.output &&
+	calc_patch_id <top-diff.output "$name" "$@" &&
+	git checkout same &&
+	git format-patch -1 --stdout -O foo-then-bar >format-patch.output &&
+	calc_patch_id <format-patch.output "ordered-$name" "$@" &&
+	cmp_patch_id $relevant "$name" "ordered-$name"
+}
+
+test_patch_id_whitespace () {
+	relevant="$1"
+	shift
+	name="ws-${1}-$relevant"
+	shift
+	get_top_diff "main~" >top-diff.output &&
+	calc_patch_id <top-diff.output "$name" "$@" &&
+	get_top_diff "with_space" >top-diff.output &&
+	calc_patch_id <top-diff.output "ws-$name" "$@" &&
+	cmp_patch_id $relevant "$name" "ws-$name"
+}
+
+
+# combined test for options: add more tests here to make them
+# run with all options
+test_patch_id () {
+	test_patch_id_file_order "$@"
+}
+
+# small tests with detailed diagnostic for basic options.
+test_expect_success 'file order is irrelevant with --stable' '
+	test_patch_id_file_order irrelevant --stable --stable
+'
+
+test_expect_success 'file order is relevant with --unstable' '
+	test_patch_id_file_order relevant --unstable --unstable
+'
+
+test_expect_success 'whitespace is relevant with --verbatim' '
+	test_patch_id_whitespace relevant --verbatim --verbatim
+'
+
+test_expect_success 'whitespace is irrelevant without --verbatim' '
+	test_patch_id_whitespace irrelevant --stable --stable
+'
+
+#Now test various option combinations.
+test_expect_success 'default is unstable' '
+	test_patch_id relevant default
+'
+
+test_expect_success 'patchid.stable = true is stable' '
+	test_config patchid.stable true &&
+	test_patch_id irrelevant patchid.stable=true
+'
+
+test_expect_success 'patchid.stable = false is unstable' '
+	test_config patchid.stable false &&
+	test_patch_id relevant patchid.stable=false
+'
+
+test_expect_success 'patchid.verbatim = true is correct and stable' '
+	test_config patchid.verbatim true &&
+	test_patch_id_whitespace relevant patchid.verbatim=true &&
+	test_patch_id irrelevant patchid.verbatim=true
+'
+
+test_expect_success 'patchid.verbatim = false is unstable' '
+	test_config patchid.verbatim false &&
+	test_patch_id relevant patchid.verbatim=false
+'
+
+test_expect_success '--unstable overrides patchid.stable = true' '
+	test_config patchid.stable true &&
+	test_patch_id relevant patchid.stable=true--unstable --unstable
+'
+
+test_expect_success '--stable overrides patchid.stable = false' '
+	test_config patchid.stable false &&
+	test_patch_id irrelevant patchid.stable=false--stable --stable
+'
+
+test_expect_success '--verbatim overrides patchid.stable = false' '
+	test_config patchid.stable false &&
+	test_patch_id_whitespace relevant stable=false--verbatim --verbatim
+'
+
+test_expect_success 'patch-id supports git-format-patch MIME output' '
+	get_patch_id main &&
+	git checkout same &&
+	git format-patch -1 --attach --stdout >format-patch.output &&
+	calc_patch_id <format-patch.output same &&
+	test_cmp patch-id_main patch-id_same
+'
+
+test_expect_success 'patch-id respects config from subdir' '
+	test_config patchid.stable true &&
+	mkdir subdir &&
+
+	# copy these because test_patch_id() looks for them in
+	# the current directory
+	cp bar-then-foo foo-then-bar subdir &&
+
+	(
+		cd subdir &&
+		test_patch_id irrelevant patchid.stable=true
+	)
+'
+
+test_expect_success 'patch-id handles no-nl-at-eof markers' '
+	cat >nonl <<-\EOF &&
+	diff --git i/a w/a
+	index e69de29..2e65efe 100644
+	--- i/a
+	+++ w/a
+	@@ -0,0 +1 @@
+	+a
+	\ No newline at end of file
+	diff --git i/b w/b
+	index e69de29..6178079 100644
+	--- i/b
+	+++ w/b
+	@@ -0,0 +1 @@
+	+b
+	EOF
+	cat >withnl <<-\EOF &&
+	diff --git i/a w/a
+	index e69de29..7898192 100644
+	--- i/a
+	+++ w/a
+	@@ -0,0 +1 @@
+	+a
+	diff --git i/b w/b
+	index e69de29..6178079 100644
+	--- i/b
+	+++ w/b
+	@@ -0,0 +1 @@
+	+b
+	EOF
+	calc_patch_id nonl <nonl &&
+	calc_patch_id withnl <withnl &&
+	test_cmp patch-id_nonl patch-id_withnl &&
+	calc_patch_id nonl-inc-ws --verbatim <nonl &&
+	calc_patch_id withnl-inc-ws --verbatim <withnl &&
+	! test_cmp patch-id_nonl-inc-ws patch-id_withnl-inc-ws
+'
+
+test_expect_success 'patch-id handles diffs with one line of before/after' '
+	cat >diffu1 <<-\EOF &&
+	diff --git a/bar b/bar
+	index bdaf90f..31051f6 100644
+	--- a/bar
+	+++ b/bar
+	@@ -2 +2,2 @@
+	 b
+	+c
+	diff --git a/car b/car
+	index 00750ed..2ae5e34 100644
+	--- a/car
+	+++ b/car
+	@@ -1 +1,2 @@
+	 3
+	+d
+	diff --git a/foo b/foo
+	index e439850..7146eb8 100644
+	--- a/foo
+	+++ b/foo
+	@@ -2 +2,2 @@
+	 a
+	+e
+	EOF
+	calc_patch_id diffu1 <diffu1 &&
+	test_config patchid.stable true &&
+	calc_patch_id diffu1stable <diffu1
+'
+test_done
-- 
cgit v1.2.3