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

Merge commit '1b593e1ea4' as 'third_party/git'

third_party/git/t/t5515-fetch-merge-logic.sh

@@ -0,0 +1,179 @@
+#!/bin/sh
+#
+# Copyright (c) 2007 Santi Béjar, based on t4013 by Junio C Hamano
+#
+#
+
+test_description='Merge logic in fetch'
+
+# NEEDSWORK: If the overspecification of the expected result is reduced, we
+# might be able to run this test in all protocol versions.
+GIT_TEST_PROTOCOL_VERSION=
+
+. ./test-lib.sh
+
+LF='
+'
+
+test_expect_success setup '
+	GIT_AUTHOR_DATE="2006-06-26 00:00:00 +0000" &&
+	GIT_COMMITTER_DATE="2006-06-26 00:00:00 +0000" &&
+	export GIT_AUTHOR_DATE GIT_COMMITTER_DATE &&
+
+	echo >file original &&
+	git add file &&
+	git commit -a -m One &&
+	git tag tag-one &&
+	git tag tag-one-tree HEAD^{tree} &&
+	git branch one &&
+
+	echo two >> file &&
+	git commit -a -m Two &&
+	git tag -a -m "Tag Two" tag-two &&
+	git branch two &&
+
+	echo three >> file &&
+	git commit -a -m Three &&
+	git tag -a -m "Tag Three" tag-three &&
+	git tag -a -m "Tag Three file" tag-three-file HEAD^{tree}:file &&
+	git branch three &&
+
+	echo master >> file &&
+	git commit -a -m Master &&
+	git tag -a -m "Tag Master" tag-master &&
+
+	git checkout three &&
+
+	git clone . cloned &&
+	cd cloned &&
+	git config remote.origin.url ../.git/ &&
+
+	git config remote.config-explicit.url ../.git/ &&
+	git config remote.config-explicit.fetch refs/heads/master:remotes/rem/master &&
+	git config --add remote.config-explicit.fetch refs/heads/one:remotes/rem/one &&
+	git config --add remote.config-explicit.fetch two:remotes/rem/two &&
+	git config --add remote.config-explicit.fetch refs/heads/three:remotes/rem/three &&
+	remotes="config-explicit" &&
+
+	git config remote.config-glob.url ../.git/ &&
+	git config remote.config-glob.fetch refs/heads/*:refs/remotes/rem/* &&
+	remotes="$remotes config-glob" &&
+
+	mkdir -p .git/remotes &&
+	{
+		echo "URL: ../.git/"
+		echo "Pull: refs/heads/master:remotes/rem/master"
+		echo "Pull: refs/heads/one:remotes/rem/one"
+		echo "Pull: two:remotes/rem/two"
+		echo "Pull: refs/heads/three:remotes/rem/three"
+	} >.git/remotes/remote-explicit &&
+	remotes="$remotes remote-explicit" &&
+
+	{
+		echo "URL: ../.git/"
+		echo "Pull: refs/heads/*:refs/remotes/rem/*"
+	} >.git/remotes/remote-glob &&
+	remotes="$remotes remote-glob" &&
+
+	mkdir -p .git/branches &&
+	echo "../.git" > .git/branches/branches-default &&
+	remotes="$remotes branches-default" &&
+
+	echo "../.git#one" > .git/branches/branches-one &&
+	remotes="$remotes branches-one" &&
+
+	for remote in $remotes ; do
+		git config branch.br-$remote.remote $remote &&
+		git config branch.br-$remote-merge.remote $remote &&
+		git config branch.br-$remote-merge.merge refs/heads/three &&
+		git config branch.br-$remote-octopus.remote $remote &&
+		git config branch.br-$remote-octopus.merge refs/heads/one &&
+		git config --add branch.br-$remote-octopus.merge two
+	done
+'
+
+# Merge logic depends on branch properties and Pull: or .fetch lines
+for remote in $remotes ; do
+    for branch in "" "-merge" "-octopus" ; do
+cat <<EOF
+br-$remote$branch
+br-$remote$branch $remote
+EOF
+    done
+done > tests
+
+# Merge logic does not depend on branch properties,
+# but does depend on Pull: or fetch lines.
+# Use two branches completely unrelated from the arguments,
+# the clone default and one without branch properties
+for branch in master br-unconfig ; do
+    echo $branch
+    for remote in $remotes ; do
+	echo $branch $remote
+    done
+done >> tests
+
+# Merge logic does not depend on branch properties
+# neither in the Pull: or .fetch config
+for branch in master br-unconfig ; do
+    cat <<EOF
+$branch ../.git
+$branch ../.git one
+$branch ../.git one two
+$branch --tags ../.git
+$branch ../.git tag tag-one tag tag-three
+$branch ../.git tag tag-one-tree tag tag-three-file
+$branch ../.git one tag tag-one tag tag-three-file
+EOF
+done >> tests
+
+while read cmd
+do
+	case "$cmd" in
+	'' | '#'*) continue ;;
+	esac
+	test=$(echo "$cmd" | sed -e 's|[/ ][/ ]*|_|g')
+	pfx=$(printf "%04d" $test_count)
+	expect_f="$TEST_DIRECTORY/t5515/fetch.$test"
+	actual_f="$pfx-fetch.$test"
+	expect_r="$TEST_DIRECTORY/t5515/refs.$test"
+	actual_r="$pfx-refs.$test"
+
+	test_expect_success "$cmd" '
+		{
+			echo "# $cmd"
+			set x $cmd; shift
+			git symbolic-ref HEAD refs/heads/$1 ; shift
+			rm -f .git/FETCH_HEAD
+			git for-each-ref \
+				refs/heads refs/remotes/rem refs/tags |
+			while read val type refname
+			do
+				git update-ref -d "$refname" "$val"
+			done
+			git fetch "$@" >/dev/null
+			cat .git/FETCH_HEAD
+		} >"$actual_f" &&
+		git show-ref >"$actual_r" &&
+		if test -f "$expect_f"
+		then
+			test_cmp "$expect_f" "$actual_f" &&
+			rm -f "$actual_f"
+		else
+			# this is to help developing new tests.
+			cp "$actual_f" "$expect_f"
+			false
+		fi &&
+		if test -f "$expect_r"
+		then
+			test_cmp "$expect_r" "$actual_r" &&
+			rm -f "$actual_r"
+		else
+			# this is to help developing new tests.
+			cp "$actual_r" "$expect_r"
+			false
+		fi
+	'
+done < tests
+
+test_done