From 6bf4b90c90f15f4ab60833bddf5b5756d1a6b1f6 Mon Sep 17 00:00:00 2001
From: Elizabeth Alexander Hunt <me@liz.coffee>
Date: Thu, 2 Jul 2026 11:55:17 -0700
Subject: Init

---
 Homework/cs3460/array_perf/TestPerformance.cpp | 54 ++++++++++++++++++++++++++
 1 file changed, 54 insertions(+)
 create mode 100644 Homework/cs3460/array_perf/TestPerformance.cpp

(limited to 'Homework/cs3460/array_perf/TestPerformance.cpp')

diff --git a/Homework/cs3460/array_perf/TestPerformance.cpp b/Homework/cs3460/array_perf/TestPerformance.cpp
new file mode 100644
index 0000000..302ab64
--- /dev/null
+++ b/Homework/cs3460/array_perf/TestPerformance.cpp
@@ -0,0 +1,54 @@
+#include "sortutils.hpp"
+
+#include "gtest/gtest.h"
+#include <algorithm>
+#include <random>
+
+constexpr auto MIN_VALUE = -10'000'000;
+constexpr auto MAX_VALUE = 10'000'000;
+
+int main(int argc, char* argv[])
+{
+    testing::InitGoogleTest(&argc, argv);
+    return RUN_ALL_TESTS();
+}
+
+SourceArray generateRandomArray()
+{
+    std::default_random_engine engine{ 0u };
+    std::uniform_int_distribution<> dist{ MIN_VALUE, MAX_VALUE };
+
+    SourceArray array;
+    std::generate(array.begin(), array.end(), [&] { return dist(engine); });
+    return array;
+}
+
+TEST(OrganPipeArray, DoesGenerateCorrectly)
+{
+    auto sourceArray = generateRandomArray();
+    std::sort(sourceArray.begin(), sourceArray.end());
+    auto array = sourceArray;
+    organPipeStdArray(array);
+
+    for (auto i = 0ul; i < sourceArray.size() / 2; i++)
+    {
+        ASSERT_EQ(sourceArray[i], array[i]) << "Organ pipe changed first half of array at position " << i;
+    }
+
+    for (std::size_t first = 0ul, second = array.size() - 1; first < second; first++, second--)
+    {
+        ASSERT_EQ(array[first], array[second]) << "Organ pipe not symmetric at positions " << first << " and " << second;
+    }
+}
+
+TEST(RawArray, DoesInitializeFromStdArrayCorrectly)
+{
+    const auto sourceArray = generateRandomArray();
+    int dest[HOW_MANY_ELEMENTS];
+    initializeRawArrayFromStdArray(sourceArray, dest);
+
+    for (auto i = 0ul; i < sourceArray.size(); i++)
+    {
+        ASSERT_EQ(sourceArray[i], dest[i]) << "Raw array differs from source array at position " << i;
+    }
+}
-- 
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