t5520: factor out common "successful autostash" code

Four tests contains repetitive lines of code.

Factor out common code into test_pull_autostash() and then call it in
these tests.

Helped-by: Eric Sunshine <[email protected]>
Signed-off-by: Mehul Jain <[email protected]>
Reviewed-by: Eric Sunshine <[email protected]>
Signed-off-by: Junio C Hamano <[email protected]>

Author: mehul2029

t/t5520-pull.sh

@@ -9,6 +9,16 @@ modify () {
 	mv "$2.x" "$2"
 }
 
+test_pull_autostash () {
+	git reset --hard before-rebase &&
+	echo dirty >new_file &&
+	git add new_file &&
+	git pull "$@" . copy &&
+	test_cmp_rev HEAD^ copy &&
+	test "$(cat new_file)" = dirty &&
+	test "$(cat file)" = "modified again"
+}
+
 test_expect_success setup '
 	echo file >file &&
 	git add file &&
@@ -247,46 +257,22 @@ test_expect_success '--rebase fails with multiple branches' '
 
 test_expect_success 'pull --rebase succeeds with dirty working directory and rebase.autostash set' '
 	test_config rebase.autostash true &&
-	git reset --hard before-rebase &&
-	echo dirty >new_file &&
-	git add new_file &&
-	git pull --rebase . copy &&
-	test_cmp_rev HEAD^ copy &&
-	test "$(cat new_file)" = dirty &&
-	test "$(cat file)" = "modified again"
+	test_pull_autostash --rebase
 '
 
 test_expect_success 'pull --rebase --autostash & rebase.autostash=true' '
 	test_config rebase.autostash true &&
-	git reset --hard before-rebase &&
-	echo dirty >new_file &&
-	git add new_file &&
-	git pull --rebase --autostash . copy &&
-	test_cmp_rev HEAD^ copy &&
-	test "$(cat new_file)" = dirty &&
-	test "$(cat file)" = "modified again"
+	test_pull_autostash --rebase --autostash
 '
 
 test_expect_success 'pull --rebase --autostash & rebase.autostash=false' '
 	test_config rebase.autostash false &&
-	git reset --hard before-rebase &&
-	echo dirty >new_file &&
-	git add new_file &&
-	git pull --rebase --autostash . copy &&
-	test_cmp_rev HEAD^ copy &&
-	test "$(cat new_file)" = dirty &&
-	test "$(cat file)" = "modified again"
+	test_pull_autostash --rebase --autostash
 '
 
-test_expect_success 'pull --rebase: --autostash & rebase.autostash unset' '
+test_expect_success 'pull --rebase --autostash & rebase.autostash unset' '
 	test_unconfig rebase.autostash &&
-	git reset --hard before-rebase &&
-	echo dirty >new_file &&
-	git add new_file &&
-	git pull --rebase --autostash . copy &&
-	test_cmp_rev HEAD^ copy &&
-	test "$(cat new_file)" = dirty &&
-	test "$(cat file)" = "modified again"
+	test_pull_autostash --rebase --autostash
 '
 
 test_expect_success 'pull --rebase --no-autostash & rebase.autostash=true' '