tests: test for the no-newline-at-EOF bug

* tests/no-newline-at-eof: New file.
* tests/Makefile.am (TESTS): Add it.

2 files changed, 55 insertions, 0 deletions

diff --git a/tests/Makefile.am b/tests/Makefile.am
index a511b0b..6a4858c 100644
--- a/tests/Makefile.am
+++ b/tests/Makefile.am
@@ -4,6 +4,7 @@ TESTS = \
   help-version	\
   function-line-vs-leading-space \
   label-vs-func	\
+  no-newline-at-eof \
   stdin
 
 EXTRA_DIST = \
diff --git a/tests/no-newline-at-eof b/tests/no-newline-at-eof
new file mode 100644
index 0000000..c3694a1
--- /dev/null
+++ b/tests/no-newline-at-eof
@@ -0,0 +1,54 @@
+#!/bin/sh
+# exercise the no-newline-at-EOF bug
+# Before the April 2010 fix, the "\ No newline at end of file"
+# line would not be printed.
+
+: ${srcdir=.}
+. "$srcdir/init.sh"; path_prepend_ ../src
+
+printf '\n1'      > a || framework_failure_
+printf '\n0\n\n1' > b || framework_failure_
+cat <<EOF > exp || framework_failure_
+@@ -1,2 +1,4 @@
+
++0
++
+ 1
+\ No newline at end of file
+EOF
+
+cat <<EOF > exp2 || framework_failure_
+@@ -1,2 +1,4 @@
+
+-1
++0
++
++1
+\ No newline at end of file
+EOF
+
+fail=0
+
+# So we don't have to record trailing blanks in expected output above.
+opt=--suppress-blank-empty
+
+diff $opt -U2 a b > out 2> err
+test $? = 1 || fail=1
+
+sed -n '/^@@/,$p' out > k && mv k out || fail=1
+compare out exp || fail=1
+# expect empty stderr
+compare err /dev/null || fail=1
+
+# Repeat, but with a newline at the end of "a".
+echo >> a
+
+diff $opt -U2 a b > out 2> err
+test $? = 1 || fail=1
+
+sed -n '/^@@/,$p' out > k && mv k out || fail=1
+compare out exp2 || fail=1
+# expect empty stderr
+compare err /dev/null || fail=1
+
+Exit $fail