1 files changed, 59 insertions, 0 deletions
diff --git a/src/third_party/zstandard/zstd/tests/regression/levels.h b/src/third_party/zstandard/zstd/tests/regression/levels.h
new file mode 100644
index 00000000000..e98209d8015
--- /dev/null
+++ b/src/third_party/zstandard/zstd/tests/regression/levels.h
@@ -0,0 +1,59 @@
+/*
+ * Copyright (c) Facebook, Inc.
+ * All rights reserved.
+ *
+ * This source code is licensed under both the BSD-style license (found in the
+ * LICENSE file in the root directory of this source tree) and the GPLv2 (found
+ * in the COPYING file in the root directory of this source tree).
+ * You may select, at your option, one of the above-listed licenses.
+ */
+
+#ifndef LEVEL
+# error LEVEL(x) must be defined
+#endif
+#ifndef FAST_LEVEL
+# error FAST_LEVEL(x) must be defined
+#endif
+#ifndef ROW_LEVEL
+# error ROW_LEVEL(x, y) must be defined
+#endif
+
+/**
+ * The levels are chosen to trigger every strategy in every source size,
+ * as well as some fast levels and the default level.
+ * If you change the compression levels, you should probably update these.
+ */
+
+FAST_LEVEL(5)
+
+FAST_LEVEL(3)
+
+FAST_LEVEL(1)
+LEVEL(0)
+LEVEL(1)
+
+LEVEL(3)
+LEVEL(4)
+/* ROW_LEVEL triggers the row hash (force enabled and disabled) with different
+ * dictionary strategies, and 16/32/64 row entries based on the level/searchLog.
+ * 1 == enabled, 2 == disabled.
+ */
+ROW_LEVEL(5, 1)
+ROW_LEVEL(5, 2) /* 16-entry rows */
+LEVEL(5)
+LEVEL(6)
+ROW_LEVEL(7, 1)
+ROW_LEVEL(7, 2) /* 16-entry rows */
+LEVEL(7)
+
+LEVEL(9)
+
+ROW_LEVEL(11, 1)
+ROW_LEVEL(11, 2) /* 32-entry rows */
+ROW_LEVEL(12, 1)
+ROW_LEVEL(12, 2) /* 64-entry rows */
+LEVEL(13)
+
+LEVEL(16)
+
+LEVEL(19)