merge(third_party/git): Merge squashed git subtree at v2.23.0 r/373

Merge commit '1b593e1ea4d2af0f6444d9a7788d5d99abd6fde5' as 'third_party/git'

1 files changed, 239 insertions, 0 deletions

diff --git a/third_party/git/t/t1004-read-tree-m-u-wf.sh b/third_party/git/t/t1004-read-tree-m-u-wf.sh
new file mode 100755
index 000000000000..c13578a635fb
--- /dev/null
+++ b/third_party/git/t/t1004-read-tree-m-u-wf.sh
@@ -0,0 +1,239 @@
+#!/bin/sh
+
+test_description='read-tree -m -u checks working tree files'
+
+. ./test-lib.sh
+. "$TEST_DIRECTORY"/lib-read-tree.sh
+
+# two-tree test
+
+test_expect_success 'two-way setup' '
+
+	mkdir subdir &&
+	echo >file1 file one &&
+	echo >file2 file two &&
+	echo >subdir/file1 file one in subdirectory &&
+	echo >subdir/file2 file two in subdirectory &&
+	git update-index --add file1 file2 subdir/file1 subdir/file2 &&
+	git commit -m initial &&
+
+	git branch side &&
+	git tag -f branch-point &&
+
+	echo file2 is not tracked on the master anymore &&
+	rm -f file2 subdir/file2 &&
+	git update-index --remove file2 subdir/file2 &&
+	git commit -a -m "master removes file2 and subdir/file2"
+'
+
+test_expect_success 'two-way not clobbering' '
+
+	echo >file2 master creates untracked file2 &&
+	echo >subdir/file2 master creates untracked subdir/file2 &&
+	if err=$(read_tree_u_must_succeed -m -u master side 2>&1)
+	then
+		echo should have complained
+		false
+	else
+		echo "happy to see $err"
+	fi
+'
+
+echo file2 >.gitignore
+
+test_expect_success 'two-way with incorrect --exclude-per-directory (1)' '
+
+	if err=$(read_tree_u_must_succeed -m --exclude-per-directory=.gitignore master side 2>&1)
+	then
+		echo should have complained
+		false
+	else
+		echo "happy to see $err"
+	fi
+'
+
+test_expect_success 'two-way with incorrect --exclude-per-directory (2)' '
+
+	if err=$(read_tree_u_must_succeed -m -u --exclude-per-directory=foo --exclude-per-directory=.gitignore master side 2>&1)
+	then
+		echo should have complained
+		false
+	else
+		echo "happy to see $err"
+	fi
+'
+
+test_expect_success 'two-way clobbering a ignored file' '
+
+	read_tree_u_must_succeed -m -u --exclude-per-directory=.gitignore master side
+'
+
+rm -f .gitignore
+
+# three-tree test
+
+test_expect_success 'three-way not complaining on an untracked path in both' '
+
+	rm -f file2 subdir/file2 &&
+	git checkout side &&
+	echo >file3 file three &&
+	echo >subdir/file3 file three &&
+	git update-index --add file3 subdir/file3 &&
+	git commit -a -m "side adds file3 and removes file2" &&
+
+	git checkout master &&
+	echo >file2 file two is untracked on the master side &&
+	echo >subdir/file2 file two is untracked on the master side &&
+
+	read_tree_u_must_succeed -m -u branch-point master side
+'
+
+test_expect_success 'three-way not clobbering a working tree file' '
+
+	git reset --hard &&
+	rm -f file2 subdir/file2 file3 subdir/file3 &&
+	git checkout master &&
+	echo >file3 file three created in master, untracked &&
+	echo >subdir/file3 file three created in master, untracked &&
+	if err=$(read_tree_u_must_succeed -m -u branch-point master side 2>&1)
+	then
+		echo should have complained
+		false
+	else
+		echo "happy to see $err"
+	fi
+'
+
+echo >.gitignore file3
+
+test_expect_success 'three-way not complaining on an untracked file' '
+
+	git reset --hard &&
+	rm -f file2 subdir/file2 file3 subdir/file3 &&
+	git checkout master &&
+	echo >file3 file three created in master, untracked &&
+	echo >subdir/file3 file three created in master, untracked &&
+
+	read_tree_u_must_succeed -m -u --exclude-per-directory=.gitignore branch-point master side
+'
+
+test_expect_success '3-way not overwriting local changes (setup)' '
+
+	git reset --hard &&
+	git checkout -b side-a branch-point &&
+	echo >>file1 "new line to be kept in the merge result" &&
+	git commit -a -m "side-a changes file1" &&
+	git checkout -b side-b branch-point &&
+	echo >>file2 "new line to be kept in the merge result" &&
+	git commit -a -m "side-b changes file2" &&
+	git checkout side-a
+
+'
+
+test_expect_success '3-way not overwriting local changes (our side)' '
+
+	# At this point, file1 from side-a should be kept as side-b
+	# did not touch it.
+
+	git reset --hard &&
+
+	echo >>file1 "local changes" &&
+	read_tree_u_must_succeed -m -u branch-point side-a side-b &&
+	grep "new line to be kept" file1 &&
+	grep "local changes" file1
+
+'
+
+test_expect_success '3-way not overwriting local changes (their side)' '
+
+	# At this point, file2 from side-b should be taken as side-a
+	# did not touch it.
+
+	git reset --hard &&
+
+	echo >>file2 "local changes" &&
+	read_tree_u_must_fail -m -u branch-point side-a side-b &&
+	! grep "new line to be kept" file2 &&
+	grep "local changes" file2
+
+'
+
+test_expect_success 'funny symlink in work tree' '
+
+	git reset --hard &&
+	git checkout -b sym-b side-b &&
+	mkdir -p a &&
+	>a/b &&
+	git add a/b &&
+	git commit -m "side adds a/b" &&
+
+	rm -fr a &&
+	git checkout -b sym-a side-a &&
+	mkdir -p a &&
+	test_ln_s_add ../b a/b &&
+	git commit -m "we add a/b" &&
+
+	read_tree_u_must_succeed -m -u sym-a sym-a sym-b
+
+'
+
+test_expect_success SANITY 'funny symlink in work tree, un-unlink-able' '
+
+	test_when_finished "chmod u+w a 2>/dev/null; rm -fr a b" &&
+
+	rm -fr a b &&
+	git reset --hard &&
+
+	git checkout sym-a &&
+	chmod a-w a &&
+	test_must_fail git read-tree -m -u sym-a sym-a sym-b
+
+'
+
+test_expect_success 'D/F setup' '
+
+	git reset --hard &&
+
+	git checkout side-a &&
+	rm -f subdir/file2 &&
+	mkdir subdir/file2 &&
+	echo qfwfq >subdir/file2/another &&
+	git add subdir/file2/another &&
+	test_tick &&
+	git commit -m "side-a changes file2 to directory"
+
+'
+
+test_expect_success 'D/F' '
+
+	git checkout side-b &&
+	read_tree_u_must_succeed -m -u branch-point side-b side-a &&
+	git ls-files -u >actual &&
+	(
+		a=$(git rev-parse branch-point:subdir/file2) &&
+		b=$(git rev-parse side-a:subdir/file2/another) &&
+		echo "100644 $a 1	subdir/file2" &&
+		echo "100644 $a 2	subdir/file2" &&
+		echo "100644 $b 3	subdir/file2/another"
+	) >expect &&
+	test_cmp expect actual
+
+'
+
+test_expect_success 'D/F resolve' '
+
+	git reset --hard &&
+	git checkout side-b &&
+	git merge-resolve branch-point -- side-b side-a
+
+'
+
+test_expect_success 'D/F recursive' '
+
+	git reset --hard &&
+	git checkout side-b &&
+	git merge-recursive branch-point -- side-b side-a
+
+'
+
+test_done