1 files changed, 38 insertions, 0 deletions
diff --git a/klm/util/stream/io_test.cc b/klm/util/stream/io_test.cc
new file mode 100644
index 00000000..82108335
--- /dev/null
+++ b/klm/util/stream/io_test.cc
@@ -0,0 +1,38 @@
+#include "util/stream/io.hh"
+
+#include "util/stream/chain.hh"
+#include "util/file.hh"
+
+#define BOOST_TEST_MODULE IOTest
+#include <boost/test/unit_test.hpp>
+
+#include <unistd.h>
+
+namespace util { namespace stream { namespace {
+
+BOOST_AUTO_TEST_CASE(CopyFile) {
+  std::string temps("io_test_temp");
+
+  scoped_fd in(MakeTemp(temps));
+  for (uint64_t i = 0; i < 100000; ++i) {
+    WriteOrThrow(in.get(), &i, sizeof(uint64_t));
+  }
+  SeekOrThrow(in.get(), 0);
+  scoped_fd out(MakeTemp(temps));
+
+  ChainConfig config;
+  config.entry_size = 8;
+  config.total_memory = 1024;
+  config.block_count = 10;
+
+  Chain(config) >> PRead(in.get()) >> Write(out.get());
+
+  SeekOrThrow(out.get(), 0);
+  for (uint64_t i = 0; i < 100000; ++i) {
+    uint64_t got;
+    ReadOrThrow(out.get(), &got, sizeof(uint64_t));
+    BOOST_CHECK_EQUAL(i, got);
+  }
+}
+
+}}} // namespaces