Add broken context-format test cases

* tests/context-format: Add context-format test cases from
Mattias Andrée <maandree@member.fsf.org> that patch doesn't parse
correctly.

2 files changed, 41 insertions, 0 deletions

diff --git a/tests/Makefile.am b/tests/Makefile.am
index a3ef97a..d22337b 100644
--- a/tests/Makefile.am
+++ b/tests/Makefile.am
@@ -22,6 +22,7 @@ TESTS = \
 	bad-filenames \
 	bad-usage \
 	concat-git-diff \
+	context-format \
 	copy-rename \
 	corrupt-patch \
 	corrupt-reject-files \
diff --git a/tests/context-format b/tests/context-format
new file mode 100644
index 0000000..8143448
--- /dev/null
+++ b/tests/context-format
@@ -0,0 +1,40 @@
+# Copyright (C) 2016 Free Software Foundation, Inc.
+#
+# Copying and distribution of this file, with or without modification,
+# in any medium, are permitted without royalty provided the copyright
+# notice and this notice are preserved.
+
+. $srcdir/test-lib.sh
+
+use_local_patch
+use_tmpdir
+
+# ==============================================================
+
+cat > ab.diff <<EOF
+*** a
+--- b
+***************
+*** 6 ****
+- b
+--- 5 ----
+EOF
+
+printf "%s\n" a a a a a b a a a a a > a
+check 'patch < ab.diff' <<EOF
+patching file a
+EOF
+
+cat > ab.diff <<EOF
+*** a
+--- b
+***************
+*** 11 ****
+- b
+--- 10 ----
+EOF
+
+printf "%s\n" a a a a a a a a a a b > a
+check 'patch < ab.diff' <<EOF
+patching file a
+EOF