fix test under non-interactive environment

diff --git a/tests/Makefile b/tests/Makefile
index 2fe9e69..866ff5d 100644 (file)
--- a/tests/Makefile
+++ b/tests/Makefile
@@ -213,7 +213,7 @@ test-lz4-contentSize: lz4 datagen
        $(LZ4) -v tmplc1 -c | $(LZ4) -t
        $(LZ4) -v --content-size tmplc1 -c | $(LZ4) -d > tmplc2
        $(DIFF) tmplc1 tmplc2
-       $(LZ4) -f tmplc1
+       $(LZ4) -f tmplc1 -c > tmplc1.lz4
        $(LZ4) --content-size tmplc1 -c > tmplc2.lz4
        ! $(DIFF) tmplc1.lz4 tmplc2.lz4  # must differ, due to content size
        $(LZ4) --content-size < tmplc1 > tmplc3.lz4