diff.tests: add testcases for -B and single line changes

Add testcases for -B and single line changes.

Signed-off-by: Aaro Koskinen <aaro.koskinen@iki.fi>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>

diff --git a/testsuite/diff.tests b/testsuite/diff.tests
index 84d853852002541881ae4f8bc0006a06550d975e..0ced0f248fed2f46a371e591c7ec6e5f2a3cb481 100755 (executable)
--- a/testsuite/diff.tests
+++ b/testsuite/diff.tests
@@ -98,6 +98,18 @@ testing "diff -B does not ignore changes whose lines are not all blank" \
        "a\n" \
        "\nb\n\n"
 
+testing "diff -B ignores blank single line change" \
+       'diff -qB - input; echo $?' \
+       "0\n" \
+       "\n1\n" \
+       "1\n"
+
+testing "diff -B does not ignore non-blank single line change" \
+       'diff -qB - input; echo $?' \
+       "Files - and input differ\n1\n" \
+       "0\n" \
+       "1\n"
+
 testing "diff always takes context from old file" \
        "diff -ub - input | $TRIM_TAB" \
 "\