1 files changed, 27 insertions, 0 deletions
diff --git a/test/io_test_helper.hh b/test/io_test_helper.hh
new file mode 100644
index 0000000..eb7bbb3
--- /dev/null
+++ b/test/io_test_helper.hh
@@ -0,0 +1,27 @@
+#ifndef IO_TEST_HELPER_HH
+#define IO_TEST_HELPER_HH
+
+#include "io.hh"  // IWYU pragma: export
+
+#include <cstddef>
+#include <memory>
+
+[[nodiscard]]
+std::unique_ptr<io::Reader> io_make_breaking(
+    std::unique_ptr<io::Reader> reader, size_t offset = 0,
+    io::ReadError error = io::ReadError::Error);
+
+[[nodiscard]]
+std::unique_ptr<io::Writer> io_make_breaking(
+    std::unique_ptr<io::Writer> writer, size_t offset = 0,
+    io::WriteError error = io::WriteError::Error);
+
+[[nodiscard]]
+std::unique_ptr<io::Reader> io_make_max_block(
+    std::unique_ptr<io::Reader> reader, size_t max_block_size);
+
+[[nodiscard]]
+std::unique_ptr<io::Writer> io_make_max_block(
+    std::unique_ptr<io::Writer> writer, size_t max_block_size);
+
+#endif  // IO_TEST_HELPER_HH