Merge test suite.
diff --git a/testsuite/gunzip/gunzip-reads-from-standard-input b/testsuite/gunzip/gunzip-reads-from-standard-input
new file mode 100644
index 0000000..0ab9fdd
--- /dev/null
+++ b/testsuite/gunzip/gunzip-reads-from-standard-input
@@ -0,0 +1,2 @@
+echo foo | gzip -c | busybox gunzip -c > output
+echo foo | cmp - output