diff --git a/repertory/repertory_test/src/ring_buffer_open_file_test.cpp b/repertory/repertory_test/src/ring_buffer_open_file_test.cpp
index 97df5f79..fe953519 100644
--- a/repertory/repertory_test/src/ring_buffer_open_file_test.cpp
+++ b/repertory/repertory_test/src/ring_buffer_open_file_test.cpp
@@ -576,4 +576,162 @@ TEST_F(ring_buffer_open_file_test,
     }
   }
 }
+
+TEST_F(ring_buffer_open_file_test, forward_center_noop_when_within_half) {
+  auto source_path = test::generate_test_file_name("ring_buffer_open_file");
+  EXPECT_CALL(provider, is_read_only()).WillRepeatedly(Return(false));
+
+  filesystem_item fsi;
+  fsi.directory = false;
+  fsi.api_path = "/test.txt";
+  fsi.size = test_chunk_size * 16U;
+  fsi.source_path = source_path;
+
+  {
+    ring_buffer_open_file file(ring_buffer_dir, test_chunk_size, 30U, fsi,
+                               provider, 8U);
+
+    file.set(0U, 3U);
+    file.forward(1U);
+
+    EXPECT_EQ(std::size_t(4U), file.get_current_chunk());
+    EXPECT_EQ(std::size_t(0U), file.get_first_chunk());
+    EXPECT_EQ(std::size_t(7U), file.get_last_chunk());
+
+    for (std::size_t chunk = 0U; chunk <= 7U; ++chunk) {
+      EXPECT_TRUE(file.get_read_state(chunk)) << "chunk " << chunk;
+    }
+  }
+}
+
+TEST_F(ring_buffer_open_file_test, forward_center_caps_at_file_end) {
+  auto source_path = test::generate_test_file_name("ring_buffer_open_file");
+  EXPECT_CALL(provider, is_read_only()).WillRepeatedly(Return(false));
+
+  filesystem_item fsi;
+  fsi.directory = false;
+  fsi.api_path = "/test.txt";
+  fsi.size = test_chunk_size * 16U;
+  fsi.source_path = source_path;
+
+  {
+    ring_buffer_open_file file(ring_buffer_dir, test_chunk_size, 30U, fsi,
+                               provider, 8U);
+
+    file.set(6U, 9U);
+    file.forward(100U);
+
+    EXPECT_EQ(std::size_t(15U), file.get_current_chunk());
+    EXPECT_EQ(std::size_t(8U), file.get_first_chunk());
+    EXPECT_EQ(std::size_t(15U), file.get_last_chunk());
+  }
+}
+
+TEST_F(ring_buffer_open_file_test,
+       forward_delta_ge_ring_triggers_full_invalidation_path) {
+  auto source_path = test::generate_test_file_name("ring_buffer_open_file");
+  EXPECT_CALL(provider, is_read_only()).WillRepeatedly(Return(false));
+
+  filesystem_item fsi;
+  fsi.directory = false;
+  fsi.api_path = "/test.txt";
+  fsi.size = test_chunk_size * 16U;
+  fsi.source_path = source_path;
+
+  {
+    ring_buffer_open_file file(ring_buffer_dir, test_chunk_size, 30U, fsi,
+                               provider, 8U);
+
+    file.set(0U, 0U);
+    file.forward(100U);
+
+    EXPECT_EQ(std::size_t(15U), file.get_current_chunk());
+    EXPECT_EQ(std::size_t(8U), file.get_first_chunk());
+    EXPECT_EQ(std::size_t(15U), file.get_last_chunk());
+
+    for (std::size_t chunk = 8U; chunk <= 15U; ++chunk) {
+      EXPECT_FALSE(file.get_read_state(chunk)) << "chunk " << chunk;
+    }
+  }
+}
+
+TEST_F(ring_buffer_open_file_test,
+       forward_center_marks_only_tail_entrants_unread) {
+  auto source_path = test::generate_test_file_name("ring_buffer_open_file");
+  EXPECT_CALL(provider, is_read_only()).WillRepeatedly(Return(false));
+
+  filesystem_item fsi;
+  fsi.directory = false;
+  fsi.api_path = "/test.txt";
+  fsi.size = test_chunk_size * 16U;
+  fsi.source_path = source_path;
+
+  {
+    ring_buffer_open_file file(ring_buffer_dir, test_chunk_size, 30U, fsi,
+                               provider, 8U);
+
+    file.set(0U, 3U);
+    file.forward(2U);
+
+    EXPECT_EQ(std::size_t(5U), file.get_current_chunk());
+    EXPECT_EQ(std::size_t(1U), file.get_first_chunk());
+    EXPECT_EQ(std::size_t(8U), file.get_last_chunk());
+
+    for (std::size_t chunk = 1U; chunk <= 7U; ++chunk) {
+      EXPECT_TRUE(file.get_read_state(chunk)) << "chunk " << chunk;
+    }
+    EXPECT_FALSE(file.get_read_state(8U));
+  }
+}
+
+TEST_F(ring_buffer_open_file_test, reverse_does_not_trigger_forward_centering) {
+  auto source_path = test::generate_test_file_name("ring_buffer_open_file");
+  EXPECT_CALL(provider, is_read_only()).WillRepeatedly(Return(false));
+
+  filesystem_item fsi;
+  fsi.directory = false;
+  fsi.api_path = "/test.txt";
+  fsi.size = test_chunk_size * 16U;
+  fsi.source_path = source_path;
+
+  {
+    ring_buffer_open_file file(ring_buffer_dir, test_chunk_size, 30U, fsi,
+                               provider, 8U);
+
+    file.set(8U, 12U);
+    file.reverse(1U);
+
+    EXPECT_EQ(std::size_t(11U), file.get_current_chunk());
+    EXPECT_EQ(std::size_t(8U), file.get_first_chunk());
+    EXPECT_EQ(std::size_t(15U), file.get_last_chunk());
+  }
+}
+
+TEST_F(ring_buffer_open_file_test,
+       forward_minimal_slide_then_center_multi_step) {
+  auto source_path = test::generate_test_file_name("ring_buffer_open_file");
+  EXPECT_CALL(provider, is_read_only()).WillRepeatedly(Return(false));
+
+  filesystem_item fsi;
+  fsi.directory = false;
+  fsi.api_path = "/test.txt";
+  fsi.size = test_chunk_size * 32U;
+  fsi.source_path = source_path;
+
+  {
+    ring_buffer_open_file file(ring_buffer_dir, test_chunk_size, 30U, fsi,
+                               provider, 8U);
+
+    file.set(0U, 3U);
+    file.forward(7U);
+
+    EXPECT_EQ(std::size_t(10U), file.get_current_chunk());
+    EXPECT_EQ(std::size_t(6U), file.get_first_chunk());
+    EXPECT_EQ(std::size_t(13U), file.get_last_chunk());
+
+    EXPECT_FALSE(file.get_read_state(11U));
+    EXPECT_FALSE(file.get_read_state(12U));
+    EXPECT_FALSE(file.get_read_state(13U));
+  }
+}
 } // namespace repertory