git: 07d72ca90585 - stable/13 - diff: add a test case about the non regular file support

[Baptiste Daroussin]

The branch stable/13 has been updated by bapt:

URL: https://cgit.FreeBSD.org/src/commit/?id=07d72ca90585ee98dbdd8f4fd2bb01bc2329d99c

commit 07d72ca90585ee98dbdd8f4fd2bb01bc2329d99c
Author:     Baptiste Daroussin <bapt at FreeBSD.org>
AuthorDate: 2021-01-26 10:38:36 +0000
Commit:     Baptiste Daroussin <bapt at FreeBSD.org>
CommitDate: 2021-05-05 08:37:07 +0000

    diff: add a test case about the non regular file support
    
    (cherry picked from commit c440e7870a020546ad241848e2ff8e9cb27a3073)
---
 usr.bin/diff/tests/diff_test.sh | 15 +++++++++++++++
 1 file changed, 15 insertions(+)

diff --git a/usr.bin/diff/tests/diff_test.sh b/usr.bin/diff/tests/diff_test.sh
index 6da2bbaea34d..60b56f0d9067 100755
--- a/usr.bin/diff/tests/diff_test.sh
+++ b/usr.bin/diff/tests/diff_test.sh
@@ -16,6 +16,7 @@ atf_test_case tabsize
 atf_test_case conflicting_format
 atf_test_case label
 atf_test_case report_identical
+atf_test_case non_regular_file
 
 simple_body()
 {
@@ -236,6 +237,19 @@ report_identical_body()
 		-o empty diff -s A B
 }
 
+non_regular_file_body()
+{
+	printf "\tA\n" > A
+	mkfifo B
+	printf "\tA\n" > B &
+
+	atf_check diff A B
+	printf "\tB\n" > B &
+	atf_check -s exit:1 \
+		-o inline:"--- A\n+++ B\n@@ -1 +1 @@\n-\tA\n+\tB\n" \
+		diff --label A --label B -u A B
+}
+
 atf_init_test_cases()
 {
 	atf_add_test_case simple
@@ -254,4 +268,5 @@ atf_init_test_cases()
 	atf_add_test_case conflicting_format
 	atf_add_test_case label
 	atf_add_test_case report_identical
+	atf_add_test_case non_regular_file
 }