t5548: add porcelain push test cases for dry-run mode

New dry-run test cases:

 - git push --porcelain --dry-run
 - git push --porcelain --dry-run --force
 - git push --porcelain --dry-run --atomic
 - git push --porcelain --dry-run --atomic --force

Signed-off-by: Jiang Xin <[email protected]>
Signed-off-by: Patrick Steinhardt <[email protected]>
Signed-off-by: Junio C Hamano <[email protected]>

Author: jiangxin

t/t5548-push-porcelain.sh

@@ -338,10 +338,159 @@ run_git_push_porcelain_output_test() {
 	'
 }
 
+run_git_push_dry_run_porcelain_output_test() {
+	case $1 in
+	http)
+		PROTOCOL="HTTP protocol"
+		URL_PREFIX="http://.*"
+		;;
+	file)
+		PROTOCOL="builtin protocol"
+		URL_PREFIX=".*"
+		;;
+	esac
+
+	# Refs of upstream : main(B)  foo(A)  bar(A)  baz(A)
+	# Refs of workbench: main(A)                  baz(A)  next(A)
+	# git-push         : main(A)  NULL    (B)     baz(A)  next(A)
+	test_expect_success ".. git-push --porcelain --dry-run ($PROTOCOL)" '
+		test_must_fail git -C workbench push --porcelain --dry-run origin \
+			main \
+			:refs/heads/foo \
+			$B:bar \
+			baz \
+			next >out &&
+		make_user_friendly_and_stable_output <out >actual &&
+		format_and_save_expect <<-EOF &&
+		> To <URL/of/upstream.git>
+		> =	refs/heads/baz:refs/heads/baz	[up to date]
+		>  	<COMMIT-B>:refs/heads/bar	<COMMIT-A>..<COMMIT-B>
+		> -	:refs/heads/foo	[deleted]
+		> *	refs/heads/next:refs/heads/next	[new branch]
+		> !	refs/heads/main:refs/heads/main	[rejected] (non-fast-forward)
+		> Done
+		EOF
+		test_cmp expect actual &&
+
+		git -C "$upstream" show-ref >out &&
+		make_user_friendly_and_stable_output <out >actual &&
+		cat >expect <<-EOF &&
+		<COMMIT-A> refs/heads/bar
+		<COMMIT-A> refs/heads/baz
+		<COMMIT-A> refs/heads/foo
+		<COMMIT-B> refs/heads/main
+		EOF
+		test_cmp expect actual
+	'
+
+	# Refs of upstream : main(B)  foo(A)  bar(A)  baz(A)
+	# Refs of workbench: main(A)                  baz(A)  next(A)
+	# push             : main(A)  NULL    (B)     baz(A)  next(A)
+	test_expect_success ".. git-push --porcelain --dry-run --force ($PROTOCOL)" '
+		git -C workbench push --porcelain --dry-run --force origin \
+			main \
+			:refs/heads/foo \
+			$B:bar \
+			baz \
+			next >out &&
+		make_user_friendly_and_stable_output <out >actual &&
+		format_and_save_expect <<-EOF &&
+		> To <URL/of/upstream.git>
+		> =	refs/heads/baz:refs/heads/baz	[up to date]
+		>  	<COMMIT-B>:refs/heads/bar	<COMMIT-A>..<COMMIT-B>
+		> -	:refs/heads/foo	[deleted]
+		> +	refs/heads/main:refs/heads/main	<COMMIT-B>...<COMMIT-A> (forced update)
+		> *	refs/heads/next:refs/heads/next	[new branch]
+		> Done
+		EOF
+		test_cmp expect actual &&
+
+		git -C "$upstream" show-ref >out &&
+		make_user_friendly_and_stable_output <out >actual &&
+		cat >expect <<-EOF &&
+		<COMMIT-A> refs/heads/bar
+		<COMMIT-A> refs/heads/baz
+		<COMMIT-A> refs/heads/foo
+		<COMMIT-B> refs/heads/main
+		EOF
+		test_cmp expect actual
+	'
+
+	# Refs of upstream : main(B)  foo(A)  bar(A)  baz(A)
+	# Refs of workbench: main(A)                  baz(A)  next(A)
+	# git-push         : main(A)  NULL    (B)     baz(A)  next(A)
+	test_expect_success ".. git-push --porcelain --dry-run --atomic ($PROTOCOL)" '
+		test_must_fail git -C workbench push --porcelain --dry-run --atomic origin \
+			main \
+			:refs/heads/foo \
+			$B:bar \
+			baz \
+			next >out &&
+		make_user_friendly_and_stable_output <out >actual &&
+		format_and_save_expect <<-EOF &&
+		> To <URL/of/upstream.git>
+		> =	refs/heads/baz:refs/heads/baz	[up to date]
+		> !	<COMMIT-B>:refs/heads/bar	[rejected] (atomic push failed)
+		> !	(delete):refs/heads/foo	[rejected] (atomic push failed)
+		> !	refs/heads/main:refs/heads/main	[rejected] (non-fast-forward)
+		> !	refs/heads/next:refs/heads/next	[rejected] (atomic push failed)
+		> Done
+		EOF
+		test_cmp expect actual &&
+
+		git -C "$upstream" show-ref >out &&
+		make_user_friendly_and_stable_output <out >actual &&
+		cat >expect <<-EOF &&
+		<COMMIT-A> refs/heads/bar
+		<COMMIT-A> refs/heads/baz
+		<COMMIT-A> refs/heads/foo
+		<COMMIT-B> refs/heads/main
+		EOF
+		test_cmp expect actual
+	'
+
+	# Refs of upstream : main(B)  foo(A)  bar(A)  baz(A)
+	# Refs of workbench: main(A)                  baz(A)  next(A)
+	# push             : main(A)  NULL    (B)     baz(A)  next(A)
+	test_expect_success ".. git-push --porcelain --dry-run --atomic --force ($PROTOCOL)" '
+		git -C workbench push --porcelain --dry-run --atomic --force origin \
+			main \
+			:refs/heads/foo \
+			$B:bar \
+			baz \
+			next >out &&
+		make_user_friendly_and_stable_output <out >actual &&
+		format_and_save_expect <<-EOF &&
+		> To <URL/of/upstream.git>
+		> =	refs/heads/baz:refs/heads/baz	[up to date]
+		>  	<COMMIT-B>:refs/heads/bar	<COMMIT-A>..<COMMIT-B>
+		> -	:refs/heads/foo	[deleted]
+		> +	refs/heads/main:refs/heads/main	<COMMIT-B>...<COMMIT-A> (forced update)
+		> *	refs/heads/next:refs/heads/next	[new branch]
+		> Done
+		EOF
+		test_cmp expect actual &&
+
+		git -C "$upstream" show-ref >out &&
+		make_user_friendly_and_stable_output <out >actual &&
+		cat >expect <<-EOF &&
+		<COMMIT-A> refs/heads/bar
+		<COMMIT-A> refs/heads/baz
+		<COMMIT-A> refs/heads/foo
+		<COMMIT-B> refs/heads/main
+		EOF
+		test_cmp expect actual
+	'
+}
+
 setup_upstream_and_workbench upstream.git
 
 run_git_push_porcelain_output_test file
 
+setup_upstream_and_workbench upstream.git
+
+run_git_push_dry_run_porcelain_output_test file
+
 ROOT_PATH="$PWD"
 . "$TEST_DIRECTORY"/lib-gpg.sh
 . "$TEST_DIRECTORY"/lib-httpd.sh
@@ -353,4 +502,8 @@ setup_upstream_and_workbench "$HTTPD_DOCUMENT_ROOT_PATH/upstream.git"
 
 run_git_push_porcelain_output_test http
 
+setup_upstream_and_workbench "$HTTPD_DOCUMENT_ROOT_PATH/upstream.git"
+
+run_git_push_dry_run_porcelain_output_test http
+
 test_done