From f04e6d5f68851a660d03aeb831f44bc3f43d9a19 Mon Sep 17 00:00:00 2001
From: sdk <sdk@openbsd.org>
Date: Wed, 29 Dec 2021 19:31:01 +0000
Subject: [PATCH] Add regress tests for grep -A, -B and -C flags

ok otto@
---
 regress/usr.bin/grep/Makefile | 11 ++++++++---
 regress/usr.bin/grep/t27.in   | 12 ++++++++++++
 regress/usr.bin/grep/t27a.out |  8 ++++++++
 regress/usr.bin/grep/t27b.out |  8 ++++++++
 regress/usr.bin/grep/t27c.out | 11 +++++++++++
 5 files changed, 47 insertions(+), 3 deletions(-)
 create mode 100644 regress/usr.bin/grep/t27.in
 create mode 100644 regress/usr.bin/grep/t27a.out
 create mode 100644 regress/usr.bin/grep/t27b.out
 create mode 100644 regress/usr.bin/grep/t27c.out

diff --git a/regress/usr.bin/grep/Makefile b/regress/usr.bin/grep/Makefile
index 6fd13d0b9f3..edb5a524817 100644
--- a/regress/usr.bin/grep/Makefile
+++ b/regress/usr.bin/grep/Makefile
@@ -1,7 +1,7 @@
-# $OpenBSD: Makefile,v 1.17 2012/12/12 15:11:25 weerd Exp $
+# $OpenBSD: Makefile,v 1.18 2021/12/29 19:31:01 sdk Exp $
 
 REGRESS_TARGETS=t1 t2 t3 t4 t5 t6 t7 t8 t9 t10 t11 t12 t13 t14 t15 t16 t17 \
-	t18 t19 t20 t21 t22 t23 t24 t25 t26
+	t18 t19 t20 t21 t22 t23 t24 t25 t26 t27
 
 t1:
 	grep t.s ${.CURDIR}/in | diff - ${.CURDIR}/t1.out
@@ -102,8 +102,13 @@ t25:
 t26:
 	echo 'aaab' | grep -o 'a*' | head -n 10 | diff - ${.CURDIR}/t26.out
 
+t27:
+	grep -A1 'C' ${.CURDIR}/t27.in | diff - ${.CURDIR}/t27a.out
+	grep -B1 'C' ${.CURDIR}/t27.in | diff - ${.CURDIR}/t27b.out
+	grep -C1 'C' ${.CURDIR}/t27.in | diff - ${.CURDIR}/t27c.out
+
 
 .PHONY: t1 t2 t3 t4 t5 t6 t7 t8 t9 t10 t11 t12 t13 t14 t15 t16 t17 t18 t19 t20
-.PHONY: t21 t22 t23 t24 t25 t26
+.PHONY: t21 t22 t23 t24 t25 t26 t27
 
 .include <bsd.regress.mk>
diff --git a/regress/usr.bin/grep/t27.in b/regress/usr.bin/grep/t27.in
new file mode 100644
index 00000000000..1967dea5320
--- /dev/null
+++ b/regress/usr.bin/grep/t27.in
@@ -0,0 +1,12 @@
+A
+B
+C
+D
+A
+B
+C
+D
+A
+B
+C
+D
diff --git a/regress/usr.bin/grep/t27a.out b/regress/usr.bin/grep/t27a.out
new file mode 100644
index 00000000000..9320af96aab
--- /dev/null
+++ b/regress/usr.bin/grep/t27a.out
@@ -0,0 +1,8 @@
+C
+D
+--
+C
+D
+--
+C
+D
diff --git a/regress/usr.bin/grep/t27b.out b/regress/usr.bin/grep/t27b.out
new file mode 100644
index 00000000000..b8e0f3383d6
--- /dev/null
+++ b/regress/usr.bin/grep/t27b.out
@@ -0,0 +1,8 @@
+B
+C
+--
+B
+C
+--
+B
+C
diff --git a/regress/usr.bin/grep/t27c.out b/regress/usr.bin/grep/t27c.out
new file mode 100644
index 00000000000..becae857c51
--- /dev/null
+++ b/regress/usr.bin/grep/t27c.out
@@ -0,0 +1,11 @@
+B
+C
+D
+--
+B
+C
+D
+--
+B
+C
+D
-- 
2.20.1