Refactor namespaces part 1 (#817)

Part 1 of refactoring effort

unittests/etl/ExtractionDataPipeTests.cpp

@@ -0,0 +1,81 @@
+//------------------------------------------------------------------------------
+/*
+    This file is part of clio: https://github.com/XRPLF/clio
+    Copyright (c) 2023, the clio developers.
+
+    Permission to use, copy, modify, and distribute this software for any
+    purpose with or without fee is hereby granted, provided that the above
+    copyright notice and this permission notice appear in all copies.
+
+    THE  SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+    WITH  REGARD  TO  THIS  SOFTWARE  INCLUDING  ALL  IMPLIED  WARRANTIES  OF
+    MERCHANTABILITY  AND  FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+    ANY  SPECIAL,  DIRECT,  INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+    WHATSOEVER  RESULTING  FROM  LOSS  OF USE, DATA OR PROFITS, WHETHER IN AN
+    ACTION  OF  CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+    OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+*/
+//==============================================================================
+
+#include <util/Fixtures.h>
+
+#include <etl/impl/ExtractionDataPipe.h>
+
+#include <gtest/gtest.h>
+
+constexpr static auto STRIDE = 4;
+constexpr static auto START_SEQ = 1234;
+
+class ETLExtractionDataPipeTest : public NoLoggerFixture
+{
+protected:
+    etl::detail::ExtractionDataPipe<uint32_t> pipe_{STRIDE, START_SEQ};
+};
+
+TEST_F(ETLExtractionDataPipeTest, StrideMatchesInput)
+{
+    EXPECT_EQ(pipe_.getStride(), STRIDE);
+}
+
+TEST_F(ETLExtractionDataPipeTest, PushedDataCanBeRetrievedAndMatchesOriginal)
+{
+    for (std::size_t i = 0; i < 8; ++i)
+        pipe_.push(START_SEQ + i, START_SEQ + i);
+
+    for (std::size_t i = 0; i < 8; ++i)
+    {
+        auto const data = pipe_.popNext(START_SEQ + i);
+        EXPECT_EQ(data.value(), START_SEQ + i);
+    }
+}
+
+TEST_F(ETLExtractionDataPipeTest, CallingFinishPushesAnEmptyOptional)
+{
+    for (std::size_t i = 0; i < 4; ++i)
+        pipe_.finish(START_SEQ + i);
+
+    for (std::size_t i = 0; i < 4; ++i)
+    {
+        auto const data = pipe_.popNext(START_SEQ + i);
+        EXPECT_FALSE(data.has_value());
+    }
+}
+
+TEST_F(ETLExtractionDataPipeTest, CallingCleanupUnblocksOtherThread)
+{
+    std::atomic_bool unblocked = false;
+    auto bgThread = std::thread([this, &unblocked] {
+        for (std::size_t i = 0; i < 252; ++i)
+            pipe_.push(START_SEQ, 1234);  // 251st element will block this thread here
+        unblocked = true;
+    });
+
+    // emulate waiting for above thread to push and get blocked
+    std::this_thread::sleep_for(std::chrono::milliseconds{100});
+
+    EXPECT_FALSE(unblocked);
+    pipe_.cleanup();
+
+    bgThread.join();
+    EXPECT_TRUE(unblocked);
+}