Repo created

libs/coding/coding_tests/move_to_front_tests.cpp

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+#include "testing/testing.hpp"
+
+#include "coding/move_to_front.hpp"
+
+#include <cstdint>
+
+using namespace coding;
+
+namespace
+{
+UNIT_TEST(MoveToFront_Smoke)
+{
+  MoveToFront mtf;
+  for (size_t i = 0; i < 256; ++i)
+    TEST_EQUAL(mtf[i], i, ());
+
+  // Initially 3 should be on the 3rd position.
+  TEST_EQUAL(mtf.Transform(3), 3, ());
+
+  // After the first transform, 3 should be moved to the 0th position.
+  TEST_EQUAL(mtf.Transform(3), 0, ());
+  TEST_EQUAL(mtf.Transform(3), 0, ());
+  TEST_EQUAL(mtf.Transform(3), 0, ());
+
+  TEST_EQUAL(mtf[0], 3, ());
+  TEST_EQUAL(mtf[1], 0, ());
+  TEST_EQUAL(mtf[2], 1, ());
+  TEST_EQUAL(mtf[3], 2, ());
+  for (size_t i = 4; i < 256; ++i)
+    TEST_EQUAL(mtf[i], i, ());
+}
+}  // namespace