fetch: split out tests for output format

We're about to introduce a new porcelain mode for the output of
git-fetch(1). As part of that we'll be introducing a set of new tests
that only relate to the output of this command.

Split out tests that exercise the output format of git-fetch(1) so that
it becomes easier to verify this functionality as a standalone unit. As
the tests assume that the default branch is called "main" we set up the
corresponding GIT_TEST_DEFAULT_INITIAL_BRANCH_NAME environment variable
accordingly.

Signed-off-by: Patrick Steinhardt <ps@pks.im>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

t/t5510-fetch.sh

@@ -1118,59 +1118,6 @@ test_expect_success 'fetching with auto-gc does not lock up' '
 	)
 '
 
-test_expect_success 'fetch aligned output' '
-	git clone . full-output &&
-	test_commit looooooooooooong-tag &&
-	(
-		cd full-output &&
-		git -c fetch.output=full fetch origin >actual 2>&1 &&
-		grep -e "->" actual | cut -c 22- >../actual
-	) &&
-	cat >expect <<-\EOF &&
-	main                 -> origin/main
-	looooooooooooong-tag -> looooooooooooong-tag
-	EOF
-	test_cmp expect actual
-'
-
-test_expect_success 'fetch compact output' '
-	git clone . compact &&
-	test_commit extraaa &&
-	(
-		cd compact &&
-		git -c fetch.output=compact fetch origin >actual 2>&1 &&
-		grep -e "->" actual | cut -c 22- >../actual
-	) &&
-	cat >expect <<-\EOF &&
-	main       -> origin/*
-	extraaa    -> *
-	EOF
-	test_cmp expect actual
-'
-
-test_expect_success '--no-show-forced-updates' '
-	mkdir forced-updates &&
-	(
-		cd forced-updates &&
-		git init &&
-		test_commit 1 &&
-		test_commit 2
-	) &&
-	git clone forced-updates forced-update-clone &&
-	git clone forced-updates no-forced-update-clone &&
-	git -C forced-updates reset --hard HEAD~1 &&
-	(
-		cd forced-update-clone &&
-		git fetch --show-forced-updates origin 2>output &&
-		test_i18ngrep "(forced update)" output
-	) &&
-	(
-		cd no-forced-update-clone &&
-		git fetch --no-show-forced-updates origin 2>output &&
-		test_i18ngrep ! "(forced update)" output
-	)
-'
-
 for section in fetch transfer
 do
 	test_expect_success "$section.hideRefs affects connectivity check" '

t/t5574-fetch-output.sh

@@ -0,0 +1,63 @@
+#!/bin/sh
+
+test_description='git fetch output format'
+
+GIT_TEST_DEFAULT_INITIAL_BRANCH_NAME=main
+export GIT_TEST_DEFAULT_INITIAL_BRANCH_NAME
+
+. ./test-lib.sh
+
+test_expect_success 'fetch aligned output' '
+	git clone . full-output &&
+	test_commit looooooooooooong-tag &&
+	(
+		cd full-output &&
+		git -c fetch.output=full fetch origin >actual 2>&1 &&
+		grep -e "->" actual | cut -c 22- >../actual
+	) &&
+	cat >expect <<-\EOF &&
+	main                 -> origin/main
+	looooooooooooong-tag -> looooooooooooong-tag
+	EOF
+	test_cmp expect actual
+'
+
+test_expect_success 'fetch compact output' '
+	git clone . compact &&
+	test_commit extraaa &&
+	(
+		cd compact &&
+		git -c fetch.output=compact fetch origin >actual 2>&1 &&
+		grep -e "->" actual | cut -c 22- >../actual
+	) &&
+	cat >expect <<-\EOF &&
+	main       -> origin/*
+	extraaa    -> *
+	EOF
+	test_cmp expect actual
+'
+
+test_expect_success '--no-show-forced-updates' '
+	mkdir forced-updates &&
+	(
+		cd forced-updates &&
+		git init &&
+		test_commit 1 &&
+		test_commit 2
+	) &&
+	git clone forced-updates forced-update-clone &&
+	git clone forced-updates no-forced-update-clone &&
+	git -C forced-updates reset --hard HEAD~1 &&
+	(
+		cd forced-update-clone &&
+		git fetch --show-forced-updates origin 2>output &&
+		test_i18ngrep "(forced update)" output
+	) &&
+	(
+		cd no-forced-update-clone &&
+		git fetch --no-show-forced-updates origin 2>output &&
+		test_i18ngrep ! "(forced update)" output
+	)
+'
+
+test_done