Release v1.1.0

Tests/CMakeLists.txt

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+
+add_subdirectory(Subjects/)
+add_subdirectory(Unit/)
+add_subdirectory(Regression/)

Tests/Subjects/CMakeLists.txt

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+add_executable(LongProcess LongProcess/Main.cpp)

Tests/Subjects/LongProcess/Main.cpp

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+#include <thread>
+#include <iostream>
+
+int main(int, char **)
+{
+    std::cout << "Started!\n";
+    std::cout.flush();
+    std::this_thread::sleep_for(std::chrono::seconds(5));
+    std::cout << "Ended!\n";
+    std::cout.flush();
+    return 100;
+}

Tests/Unit/CCompile.c

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+// IACore-OSS; The Core Library for All IA Open Source Projects 
+// Copyright (C) 2025 IAS (ias@iasoft.dev)
+// 
+// This program is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+// 
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+// 
+// You should have received a copy of the GNU General Public License
+// along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
+#if defined(__cplusplus)
+#error "CRITICAL: This file MUST be compiled as C to test ABI compatibility."
+#endif
+
+#include <IACore/IACore.hpp>
+
+#if TRUE != 1
+#error "TRUE macro is broken in C mode"
+#endif
+
+int main(void) {
+    IA_VERSION_TYPE version = IA_MAKE_VERSION(1, 0, 0);
+
+    IA_ASSERT(version > 0);
+
+    UNUSED(version);
+
+    int32_t myNumber = 10;
+    
+    (void)myNumber; 
+
+    return 0;
+}

Tests/Unit/CMakeLists.txt

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+# ------------------------------------------------
+#   C Compile Test (Keep separate to verify C ABI)
+# ------------------------------------------------
+add_executable(IACore_Test_C_ABI "CCompile.c")
+set_target_properties(IACore_Test_C_ABI PROPERTIES
+    C_STANDARD 99           
+    C_STANDARD_REQUIRED ON
+    LINKER_LANGUAGE C      
+)
+target_link_libraries(IACore_Test_C_ABI PRIVATE IACore)
+
+# ------------------------------------------------
+#   The Unified C++ Test Suite
+# ------------------------------------------------
+set(TEST_SOURCES
+    Main.cpp
+    Utils.cpp
+    Environment.cpp
+    ProcessOps.cpp
+    StreamReader.cpp
+    RingBuffer.cpp
+)
+
+add_executable(IACore_Test_Suite ${TEST_SOURCES})
+
+# Enable exceptions for testing framework
+target_compile_options(IACore_Test_Suite PRIVATE -fexceptions)
+set_target_properties(IACore_Test_Suite PROPERTIES USE_EXCEPTIONS ON)
+
+target_link_libraries(IACore_Test_Suite PRIVATE IACore)
+
+# Copy necessary runtime assets
+add_custom_command(TARGET IACore_Test_Suite POST_BUILD
+    COMMAND ${CMAKE_COMMAND} -E copy_if_different
+    $<TARGET_FILE:LongProcess>
+    $<TARGET_FILE_DIR:IACore_Test_Suite>/LongProcess${CMAKE_EXECUTABLE_SUFFIX}
+)

Tests/Unit/Environment.cpp

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+// IACore-OSS; The Core Library for All IA Open Source Projects
+// Copyright (C) 2025 IAS (ias@iasoft.dev)
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+#include <IACore/Environment.hpp>
+
+#include <IACore/IATest.hpp>
+
+using namespace IACore;
+
+// -----------------------------------------------------------------------------
+// Constants
+// -----------------------------------------------------------------------------
+static const char *TEST_KEY = "IA_TEST_ENV_VAR_12345";
+static const char *TEST_VAL = "Hello World";
+
+// -----------------------------------------------------------------------------
+// Test Block Definition
+// -----------------------------------------------------------------------------
+
+IAT_BEGIN_BLOCK(Core, Environment)
+
+// -------------------------------------------------------------------------
+// 1. Basic Set and Get (The Happy Path)
+// -------------------------------------------------------------------------
+BOOL TestBasicCycle()
+{
+    // 1. Ensure clean slate
+    Environment::Unset(TEST_KEY);
+    IAT_CHECK_NOT(Environment::Exists(TEST_KEY));
+
+    // 2. Set
+    BOOL setRes = Environment::Set(TEST_KEY, TEST_VAL);
+    IAT_CHECK(setRes);
+    IAT_CHECK(Environment::Exists(TEST_KEY));
+
+    // 3. Find (Optional)
+    auto opt = Environment::Find(TEST_KEY);
+    IAT_CHECK(opt.has_value());
+    IAT_CHECK_EQ(*opt, String(TEST_VAL));
+
+    // 4. Get (Direct)
+    String val = Environment::Get(TEST_KEY);
+    IAT_CHECK_EQ(val, String(TEST_VAL));
+
+    // Cleanup
+    Environment::Unset(TEST_KEY);
+    return TRUE;
+}
+
+// -------------------------------------------------------------------------
+// 2. Overwriting Values
+// -------------------------------------------------------------------------
+BOOL TestOverwrite()
+{
+    Environment::Set(TEST_KEY, "ValueA");
+    IAT_CHECK_EQ(Environment::Get(TEST_KEY), String("ValueA"));
+
+    // Overwrite
+    Environment::Set(TEST_KEY, "ValueB");
+    IAT_CHECK_EQ(Environment::Get(TEST_KEY), String("ValueB"));
+
+    Environment::Unset(TEST_KEY);
+    return TRUE;
+}
+
+// -------------------------------------------------------------------------
+// 3. Unset Logic
+// -------------------------------------------------------------------------
+BOOL TestUnset()
+{
+    Environment::Set(TEST_KEY, "To Be Deleted");
+    IAT_CHECK(Environment::Exists(TEST_KEY));
+
+    BOOL unsetRes = Environment::Unset(TEST_KEY);
+    IAT_CHECK(unsetRes);
+
+    // Verify it is actually gone
+    IAT_CHECK_NOT(Environment::Exists(TEST_KEY));
+
+    // Find should return nullopt
+    auto opt = Environment::Find(TEST_KEY);
+    IAT_CHECK_NOT(opt.has_value());
+
+    return TRUE;
+}
+
+// -------------------------------------------------------------------------
+// 4. Default Value Fallbacks
+// -------------------------------------------------------------------------
+BOOL TestDefaults()
+{
+    const char *ghostKey = "IA_THIS_KEY_DOES_NOT_EXIST";
+
+    // Ensure it really doesn't exist
+    Environment::Unset(ghostKey);
+
+    // Test Get with implicit default ("")
+    String empty = Environment::Get(ghostKey);
+    IAT_CHECK(empty.empty());
+
+    // Test Get with explicit default
+    String fallback = Environment::Get(ghostKey, "MyDefault");
+    IAT_CHECK_EQ(fallback, String("MyDefault"));
+
+    return TRUE;
+}
+
+// -------------------------------------------------------------------------
+// 5. Empty Strings vs Null/Unset
+// -------------------------------------------------------------------------
+// Does Set(Key, "") create an existing empty variable, or unset it?
+// Standard POSIX/Windows API behavior is that it EXISTS, but is empty.
+BOOL TestEmptyValue()
+{
+    Environment::Set(TEST_KEY, "");
+
+#if IA_PLATFORM_WINDOWS
+    // Windows behavior: Setting to empty string removes the variable
+    // IAT_CHECK_NOT(Environment::Exists(TEST_KEY));
+    // auto opt = Environment::Find(TEST_KEY);
+    // IAT_CHECK_NOT(opt.has_value());
+#else
+    // POSIX behavior: Variable exists but is empty
+    IAT_CHECK(Environment::Exists(TEST_KEY));
+    auto opt = Environment::Find(TEST_KEY);
+    IAT_CHECK(opt.has_value());
+    IAT_CHECK(opt->empty());
+#endif
+
+    // Cleanup
+    Environment::Unset(TEST_KEY);
+    IAT_CHECK_NOT(Environment::Exists(TEST_KEY));
+
+    return TRUE;
+}
+
+// -------------------------------------------------------------------------
+// 6. Validation / Bad Input
+// -------------------------------------------------------------------------
+BOOL TestBadInput()
+{
+    // Setting an empty key should fail gracefully
+    BOOL res = Environment::Set("", "Value");
+    IAT_CHECK_NOT(res);
+
+    // Unsetting an empty key should fail
+    BOOL resUnset = Environment::Unset("");
+    IAT_CHECK_NOT(resUnset);
+
+    return TRUE;
+}
+
+// -------------------------------------------------------------------------
+// Registration
+// -------------------------------------------------------------------------
+IAT_BEGIN_TEST_LIST()
+IAT_ADD_TEST(TestBasicCycle);
+IAT_ADD_TEST(TestOverwrite);
+IAT_ADD_TEST(TestUnset);
+IAT_ADD_TEST(TestDefaults);
+IAT_ADD_TEST(TestEmptyValue);
+IAT_ADD_TEST(TestBadInput);
+IAT_END_TEST_LIST()
+
+IAT_END_BLOCK()
+
+IAT_REGISTER_ENTRY(Core, Environment)

Tests/Unit/Main.cpp

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+// IACore-OSS; The Core Library for All IA Open Source Projects
+// Copyright (C) 2025 IAS (ias@iasoft.dev)
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+#include <IACore/IACore.hpp>
+#include <IACore/IATest.hpp>
+
+int main(int argc, char *argv[])
+{
+    UNUSED(argc);
+    UNUSED(argv);
+
+    printf(__CC_GREEN "\n===============================================================\n");
+    printf("   IACore (Independent Architecture Core) - Unit Test Suite\n");
+    printf("===============================================================\n" __CC_DEFAULT "\n");
+
+    IACore::Initialize();
+
+    int result = ia::iatest::TestRegistry::RunAll();
+
+    IACore::Terminate();
+
+    return result;
+}

Tests/Unit/ProcessOps.cpp

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+// IACore-OSS; The Core Library for All IA Open Source Projects
+// Copyright (C) 2025 IAS (ias@iasoft.dev)
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+#include <IACore/ProcessOps.hpp>
+
+#include <IACore/IATest.hpp>
+
+using namespace IACore;
+
+// -----------------------------------------------------------------------------
+// Platform Abstraction for Test Commands
+// -----------------------------------------------------------------------------
+#if IA_PLATFORM_WINDOWS
+#    define CMD_ECHO_EXE "cmd.exe"
+#    define CMD_ARG_PREFIX "/c echo"
+#    define NULL_DEVICE "NUL"
+#else
+#    define CMD_ECHO_EXE "/bin/echo"
+#    define CMD_ARG_PREFIX ""
+#    define NULL_DEVICE "/dev/null"
+#endif
+
+IAT_BEGIN_BLOCK(Core, ProcessOps)
+
+// -------------------------------------------------------------------------
+// 1. Basic Execution (Exit Code 0)
+// -------------------------------------------------------------------------
+BOOL TestBasicRun()
+{
+    // Simple "echo hello"
+    String captured;
+
+    auto result = ProcessOps::SpawnProcessSync(CMD_ECHO_EXE, CMD_ARG_PREFIX " HelloIA",
+                                               [&](StringView line) { captured = line; });
+
+    IAT_CHECK(result.has_value());
+    IAT_CHECK_EQ(*result, 0); // Exit code 0
+
+    // We check if "HelloIA" is contained or equal.
+    IAT_CHECK(captured.find("HelloIA") != String::npos);
+
+    return TRUE;
+}
+
+// -------------------------------------------------------------------------
+// 2. Argument Parsing
+// -------------------------------------------------------------------------
+BOOL TestArguments()
+{
+    Vector<String> lines;
+
+    // Echo two distinct words.
+    // Windows: cmd.exe /c echo one two
+    // Linux: /bin/echo one two
+    String args = String(CMD_ARG_PREFIX) + " one two";
+    if (args[0] == ' ')
+        args.erase(0, 1); // cleanup space if prefix empty
+
+    auto result =
+        ProcessOps::SpawnProcessSync(CMD_ECHO_EXE, args, [&](StringView line) { lines.push_back(String(line)); });
+
+    IAT_CHECK_EQ(*result, 0);
+    IAT_CHECK(lines.size() > 0);
+
+    // Output should contain "one two"
+    IAT_CHECK(lines[0].find("one two") != String::npos);
+
+    return TRUE;
+}
+
+// -------------------------------------------------------------------------
+// 3. Error / Non-Zero Exit Codes
+// -------------------------------------------------------------------------
+BOOL TestExitCodes()
+{
+    // We need a command that returns non-zero.
+    // Windows: cmd /c exit 1
+    // Linux: /bin/sh -c "exit 1"
+
+    String cmd, arg;
+
+#if IA_PLATFORM_WINDOWS
+    cmd = "cmd.exe";
+    arg = "/c exit 42";
+#else
+    cmd = "/bin/sh";
+    arg = "-c \"exit 42\""; // quotes needed for sh -c
+#endif
+
+    auto result = ProcessOps::SpawnProcessSync(cmd, arg, [](StringView) {});
+
+    IAT_CHECK(result.has_value());
+    IAT_CHECK_EQ(*result, 42);
+
+    return TRUE;
+}
+
+// -------------------------------------------------------------------------
+// 4. Missing Executable Handling
+// -------------------------------------------------------------------------
+BOOL TestMissingExe()
+{
+    // Try to run a random string
+    auto result = ProcessOps::SpawnProcessSync("sdflkjghsdflkjg", "", [](StringView) {});
+
+    // Windows: CreateProcess usually fails -> returns unexpected
+    // Linux: execvp fails inside child, returns 127 via waitpid
+
+#if IA_PLATFORM_WINDOWS
+    IAT_CHECK_NOT(result.has_value()); // Should be an error string
+#else
+    // Linux fork succeeds, but execvp fails, returning 127
+    IAT_CHECK(result.has_value());
+    IAT_CHECK_EQ(*result, 127);
+#endif
+
+    return TRUE;
+}
+
+// -------------------------------------------------------------------------
+// 5. Line Buffer Logic (The 4096 split test)
+// -------------------------------------------------------------------------
+BOOL TestLargeOutput()
+{
+    // Need to generate output larger than the internal 4096 buffer
+    // to ensure the "partial line" logic works when a line crosses a buffer boundary.
+
+    String massiveString;
+    massiveString.reserve(5000);
+    for (int i = 0; i < 500; ++i)
+        massiveString += "1234567890"; // 5000 chars
+
+    String cmd, arg;
+
+#if IA_PLATFORM_WINDOWS
+    cmd = "cmd.exe";
+    // Windows has command line length limits (~8k), 5k is safe.
+    arg = "/c echo " + massiveString;
+#else
+    cmd = "/bin/echo";
+    arg = massiveString;
+#endif
+
+    String captured;
+    auto result = ProcessOps::SpawnProcessSync(cmd, arg, [&](StringView line) { captured += line; });
+
+    IAT_CHECK(result.has_value());
+    IAT_CHECK_EQ(*result, 0);
+
+    // If the LineBuffer failed to stitch chunks, the length wouldn't match
+    // or we would get multiple callbacks if we expected 1 line.
+    IAT_CHECK_EQ(captured.length(), massiveString.length());
+
+    return TRUE;
+}
+
+// -------------------------------------------------------------------------
+// 6. Multi-Line Handling
+// -------------------------------------------------------------------------
+BOOL TestMultiLine()
+{
+    // Windows: cmd /c "echo A && echo B"
+    // Linux: /bin/sh -c "echo A; echo B"
+
+    String cmd, arg;
+#if IA_PLATFORM_WINDOWS
+    cmd = "cmd.exe";
+    arg = "/c \"echo LineA && echo LineB\"";
+#else
+    cmd = "/bin/sh";
+    arg = "-c \"echo LineA; echo LineB\"";
+#endif
+
+    int lineCount = 0;
+    bool foundA = false;
+    bool foundB = false;
+
+    UNUSED(ProcessOps::SpawnProcessSync(cmd, arg, [&](StringView line) {
+        lineCount++;
+        if (line.find("LineA") != String::npos)
+            foundA = true;
+        if (line.find("LineB") != String::npos)
+            foundB = true;
+    }));
+
+    IAT_CHECK(foundA);
+    IAT_CHECK(foundB);
+    // We expect at least 2 lines.
+    // (Windows sometimes echoes the command itself depending on echo settings, but we check contents)
+    IAT_CHECK(lineCount >= 2);
+
+    return TRUE;
+}
+
+// -------------------------------------------------------------------------
+// 6. Complex Command Line Arguments Handling
+// -------------------------------------------------------------------------
+BOOL TestComplexArguments()
+{
+    // Should parse as 3 arguments:
+    // 1. -DDEFINED_MSG="Hello World"
+    // 2. -v
+    // 3. path/to/file
+    String complexArgs = "-DDEFINED_MSG=\\\"Hello World\\\" -v path/to/file";
+
+    String cmd = CMD_ECHO_EXE;
+
+    String finalArgs;
+#if IA_PLATFORM_WINDOWS
+    finalArgs = "/c echo " + complexArgs;
+#else
+    finalArgs = complexArgs;
+#endif
+
+    String captured;
+    auto result = ProcessOps::SpawnProcessSync(cmd, finalArgs, [&](StringView line) { captured += line; });
+
+    IAT_CHECK(result.has_value());
+    IAT_CHECK_EQ(*result, 0);
+
+    // Verify the quotes were preserved in the output
+    IAT_CHECK(captured.find("Hello World") != String::npos);
+    return TRUE;
+}
+
+// -------------------------------------------------------------------------
+// Registration
+// -------------------------------------------------------------------------
+IAT_BEGIN_TEST_LIST()
+IAT_ADD_TEST(TestBasicRun);
+IAT_ADD_TEST(TestArguments);
+IAT_ADD_TEST(TestExitCodes);
+IAT_ADD_TEST(TestMissingExe);
+IAT_ADD_TEST(TestLargeOutput);
+IAT_ADD_TEST(TestMultiLine);
+IAT_ADD_TEST(TestComplexArguments);
+IAT_END_TEST_LIST()
+
+IAT_END_BLOCK()
+
+IAT_REGISTER_ENTRY(Core, ProcessOps)

Tests/Unit/RingBuffer.cpp

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+// IACore-OSS; The Core Library for All IA Open Source Projects
+// Copyright (C) 2025 IAS (ias@iasoft.dev)
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+#include <IACore/ADT/RingBuffer.hpp>
+#include <IACore/IATest.hpp>
+
+using namespace IACore;
+
+IAT_BEGIN_BLOCK(Core, RingBuffer)
+
+// -------------------------------------------------------------------------
+// 1. Basic Push Pop
+// -------------------------------------------------------------------------
+BOOL TestPushPop()
+{
+    // Allocate raw memory for the ring buffer
+    // ControlBlock (128 bytes) + Data
+    std::vector<UINT8> memory(sizeof(RingBufferView::ControlBlock) + 1024);
+
+    // Initialize as OWNER (Producer)
+    RingBufferView producer(std::span<UINT8>(memory), TRUE);
+
+    // Initialize as CONSUMER (Pointer to same memory)
+    RingBufferView consumer(std::span<UINT8>(memory), FALSE);
+
+    // Data to send
+    String msg = "Hello RingBuffer";
+    BOOL pushed = producer.Push(1, {(const UINT8 *) msg.data(), msg.size()});
+    IAT_CHECK(pushed);
+
+    // Read back
+    RingBufferView::PacketHeader header;
+    UINT8 readBuf[128];
+
+    INT32 bytesRead = consumer.Pop(header, std::span<UINT8>(readBuf, 128));
+
+    IAT_CHECK_EQ(header.ID, (UINT16) 1);
+    IAT_CHECK_EQ(bytesRead, (INT32) msg.size());
+
+    String readMsg((char *) readBuf, bytesRead);
+    IAT_CHECK_EQ(readMsg, msg);
+
+    return TRUE;
+}
+
+// -------------------------------------------------------------------------
+// 2. Wrap Around
+// -------------------------------------------------------------------------
+BOOL TestWrapAround()
+{
+    // Small buffer to force wrapping quickly
+    // Capacity will be 100 bytes
+    std::vector<UINT8> memory(sizeof(RingBufferView::ControlBlock) + 100);
+    RingBufferView rb(std::span<UINT8>(memory), TRUE);
+
+    // Fill buffer to near end
+    // Push 80 bytes
+    std::vector<UINT8> junk(80, 0xFF);
+    rb.Push(1, junk);
+
+    // Pop them to advance READ cursor
+    RingBufferView::PacketHeader header;
+    UINT8 outBuf[100];
+    rb.Pop(header, outBuf);
+
+    // Now READ and WRITE are near index 80.
+    // Pushing 40 bytes should trigger a wrap-around (split write)
+    std::vector<UINT8> wrapData(40, 0xAA);
+    BOOL pushed = rb.Push(2, wrapData);
+    IAT_CHECK(pushed);
+
+    // Pop and verify integrity
+    INT32 popSize = rb.Pop(header, outBuf);
+    IAT_CHECK_EQ(popSize, 40);
+
+    // Check if data is intact
+    BOOL match = TRUE;
+    for (int i = 0; i < 40; i++)
+    {
+        if (outBuf[i] != 0xAA)
+            match = FALSE;
+    }
+    IAT_CHECK(match);
+
+    return TRUE;
+}
+
+IAT_BEGIN_TEST_LIST()
+IAT_ADD_TEST(TestPushPop);
+IAT_ADD_TEST(TestWrapAround);
+IAT_END_TEST_LIST()
+
+IAT_END_BLOCK()
+
+IAT_REGISTER_ENTRY(Core, RingBuffer)

Tests/Unit/StreamReader.cpp

@@ -0,0 +1,176 @@
+// IACore-OSS; The Core Library for All IA Open Source Projects
+// Copyright (C) 2025 IAS (ias@iasoft.dev)
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+#include <IACore/StreamReader.hpp>
+
+#include <IACore/IATest.hpp>
+
+using namespace IACore;
+
+IAT_BEGIN_BLOCK(Core, StreamReader)
+
+// -------------------------------------------------------------------------
+// 1. Basic Primitive Reading (UINT8)
+// -------------------------------------------------------------------------
+BOOL TestReadUint8()
+{
+    UINT8 data[] = {0xAA, 0xBB, 0xCC};
+    StreamReader reader(data);
+
+    // Read First Byte
+    auto val1 = reader.Read<UINT8>();
+    IAT_CHECK(val1.has_value());
+    IAT_CHECK_EQ(*val1, 0xAA);
+    IAT_CHECK_EQ(reader.Cursor(), (SIZE_T) 1);
+
+    // Read Second Byte
+    auto val2 = reader.Read<UINT8>();
+    IAT_CHECK_EQ(*val2, 0xBB);
+
+    return TRUE;
+}
+
+// -------------------------------------------------------------------------
+// 2. Multi-byte Reading (Endianness check)
+// -------------------------------------------------------------------------
+BOOL TestReadMultiByte()
+{
+    // 0x04030201 in Little Endian memory layout
+    // IACore always assumes a Little Endian machine
+    UINT8 data[] = {0x01, 0x02, 0x03, 0x04};
+    StreamReader reader(data);
+
+    auto val = reader.Read<UINT32>();
+    IAT_CHECK(val.has_value());
+
+    IAT_CHECK_EQ(*val, (UINT32) 0x04030201);
+
+    IAT_CHECK_EQ(reader.Cursor(), (SIZE_T) 4);
+    IAT_CHECK(reader.IsEOF());
+
+    return TRUE;
+}
+
+// -------------------------------------------------------------------------
+// 3. Floating Point (Approx check)
+// -------------------------------------------------------------------------
+BOOL TestReadFloat()
+{
+    FLOAT32 pi = 3.14159f;
+    // Bit-cast float to bytes for setup
+    UINT8 data[4];
+    std::memcpy(data, &pi, 4);
+
+    StreamReader reader(data);
+    auto val = reader.Read<FLOAT32>();
+
+    IAT_CHECK(val.has_value());
+    IAT_CHECK_APPROX(*val, pi);
+
+    return TRUE;
+}
+
+// -------------------------------------------------------------------------
+// 4. Batch Buffer Reading
+// -------------------------------------------------------------------------
+BOOL TestReadBuffer()
+{
+    UINT8 src[] = {1, 2, 3, 4, 5};
+    UINT8 dst[3] = {0};
+    StreamReader reader(src);
+
+    // Read 3 bytes into dst
+    auto res = reader.Read(dst, 3);
+    IAT_CHECK(res.has_value());
+
+    // Verify dst content
+    IAT_CHECK_EQ(dst[0], 1);
+    IAT_CHECK_EQ(dst[1], 2);
+    IAT_CHECK_EQ(dst[2], 3);
+
+    // Verify cursor
+    IAT_CHECK_EQ(reader.Cursor(), (SIZE_T) 3);
+
+    return TRUE;
+}
+
+// -------------------------------------------------------------------------
+// 5. Navigation (Seek, Skip, Remaining)
+// -------------------------------------------------------------------------
+BOOL TestNavigation()
+{
+    UINT8 data[10] = {0}; // Zero init
+    StreamReader reader(data);
+
+    IAT_CHECK_EQ(reader.Remaining(), (SIZE_T) 10);
+
+    // Skip
+    reader.Skip(5);
+    IAT_CHECK_EQ(reader.Cursor(), (SIZE_T) 5);
+    IAT_CHECK_EQ(reader.Remaining(), (SIZE_T) 5);
+
+    // Skip clamping
+    reader.Skip(100); // Should clamp to 10
+    IAT_CHECK_EQ(reader.Cursor(), (SIZE_T) 10);
+    IAT_CHECK(reader.IsEOF());
+
+    // Seek
+    reader.Seek(2);
+    IAT_CHECK_EQ(reader.Cursor(), (SIZE_T) 2);
+    IAT_CHECK_EQ(reader.Remaining(), (SIZE_T) 8);
+    IAT_CHECK_NOT(reader.IsEOF());
+
+    return TRUE;
+}
+
+// -------------------------------------------------------------------------
+// 6. Error Handling (EOF Protection)
+// -------------------------------------------------------------------------
+BOOL TestBoundaryChecks()
+{
+    UINT8 data[] = {0x00, 0x00};
+    StreamReader reader(data);
+
+    // Valid read
+    UNUSED(reader.Read<UINT16>());
+    IAT_CHECK(reader.IsEOF());
+
+    // Invalid Read Primitive
+    auto val = reader.Read<UINT8>();
+    IAT_CHECK_NOT(val.has_value()); // Should be unexpected
+
+    // Invalid Batch Read
+    UINT8 buf[1];
+    auto batch = reader.Read(buf, 1);
+    IAT_CHECK_NOT(batch.has_value());
+
+    return TRUE;
+}
+
+// -------------------------------------------------------------------------
+// Registration
+// -------------------------------------------------------------------------
+IAT_BEGIN_TEST_LIST()
+IAT_ADD_TEST(TestReadUint8);
+IAT_ADD_TEST(TestReadMultiByte);
+IAT_ADD_TEST(TestReadFloat);
+IAT_ADD_TEST(TestReadBuffer);
+IAT_ADD_TEST(TestNavigation);
+IAT_ADD_TEST(TestBoundaryChecks);
+IAT_END_TEST_LIST()
+
+IAT_END_BLOCK()
+
+IAT_REGISTER_ENTRY(Core, StreamReader)

Tests/Unit/Utils.cpp

@@ -0,0 +1,222 @@
+// IACore-OSS; The Core Library for All IA Open Source Projects
+// Copyright (C) 2025 IAS (ias@iasoft.dev)
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+#include <IACore/Utils.hpp>
+
+#include <IACore/IATest.hpp>
+
+using namespace IACore;
+
+// -----------------------------------------------------------------------------
+// Test Structs for Hashing (Must be defined at Global Scope)
+// -----------------------------------------------------------------------------
+
+struct TestVec3
+{
+    FLOAT32 x, y, z;
+
+    // Equality operator required for hash maps, though strictly
+    // the hash function itself doesn't need it, it's good practice to test both.
+    bool operator==(const TestVec3 &other) const
+    {
+        return x == other.x && y == other.y && z == other.z;
+    }
+};
+
+// Inject the hash specialization into the ankerl namespace
+// This proves the macro works structurally
+IA_MAKE_HASHABLE(TestVec3, &TestVec3::x, &TestVec3::y, &TestVec3::z);
+
+// -----------------------------------------------------------------------------
+// Test Block Definition
+// -----------------------------------------------------------------------------
+
+IAT_BEGIN_BLOCK(Core, Utils)
+
+// -------------------------------------------------------------------------
+// 1. Binary <-> Hex String Conversion
+// -------------------------------------------------------------------------
+BOOL TestHexConversion()
+{
+    // A. Binary To Hex
+    UINT8 bin[] = {0xDE, 0xAD, 0xBE, 0xEF, 0x00, 0xFF};
+    String hex = IACore::Utils::BinaryToHexString(bin);
+
+    IAT_CHECK_EQ(hex, String("DEADBEEF00FF"));
+
+    // B. Hex To Binary (Valid Upper)
+    auto resUpper = IACore::Utils::HexStringToBinary("DEADBEEF00FF");
+    IAT_CHECK(resUpper.has_value());
+    IAT_CHECK_EQ(resUpper->size(), (SIZE_T) 6);
+    IAT_CHECK_EQ((*resUpper)[0], 0xDE);
+    IAT_CHECK_EQ((*resUpper)[5], 0xFF);
+
+    // C. Hex To Binary (Valid Lower/Mixed)
+    auto resLower = IACore::Utils::HexStringToBinary("deadbeef00ff");
+    IAT_CHECK(resLower.has_value());
+    IAT_CHECK_EQ((*resLower)[0], 0xDE);
+
+    // D. Round Trip Integrity
+    Vector<UINT8> original = {1, 2, 3, 4, 5};
+    String s = IACore::Utils::BinaryToHexString(original);
+    auto back = IACore::Utils::HexStringToBinary(s);
+    IAT_CHECK(back.has_value());
+    IAT_CHECK_EQ(original.size(), back->size());
+    IAT_CHECK_EQ(original[2], (*back)[2]);
+
+    return TRUE;
+}
+
+// -------------------------------------------------------------------------
+// 2. Hex Error Handling
+// -------------------------------------------------------------------------
+BOOL TestHexErrors()
+{
+    // Odd Length
+    auto odd = IACore::Utils::HexStringToBinary("ABC");
+    IAT_CHECK_NOT(odd.has_value());
+
+    // Invalid Characters
+    auto invalid = IACore::Utils::HexStringToBinary("ZZTOP");
+    IAT_CHECK_NOT(invalid.has_value());
+
+    // Empty string is valid (empty vector)
+    auto empty = IACore::Utils::HexStringToBinary("");
+    IAT_CHECK(empty.has_value());
+    IAT_CHECK_EQ(empty->size(), (SIZE_T) 0);
+
+    return TRUE;
+}
+
+// -------------------------------------------------------------------------
+// 3. Algorithms: Sorting
+// -------------------------------------------------------------------------
+BOOL TestSort()
+{
+    Vector<int> nums = {5, 1, 4, 2, 3};
+
+    IACore::Utils::Sort(nums);
+
+    IAT_CHECK_EQ(nums[0], 1);
+    IAT_CHECK_EQ(nums[1], 2);
+    IAT_CHECK_EQ(nums[2], 3);
+    IAT_CHECK_EQ(nums[3], 4);
+    IAT_CHECK_EQ(nums[4], 5);
+
+    return TRUE;
+}
+
+// -------------------------------------------------------------------------
+// 4. Algorithms: Binary Search (Left/Right)
+// -------------------------------------------------------------------------
+BOOL TestBinarySearch()
+{
+    // Must be sorted for Binary Search
+    Vector<int> nums = {10, 20, 20, 20, 30};
+
+    // Search Left (Lower Bound) -> First element >= value
+    auto itLeft = IACore::Utils::BinarySearchLeft(nums, 20);
+    IAT_CHECK(itLeft != nums.end());
+    IAT_CHECK_EQ(*itLeft, 20);
+    IAT_CHECK_EQ(std::distance(nums.begin(), itLeft), 1); // Index 1 is first 20
+
+    // Search Right (Upper Bound) -> First element > value
+    auto itRight = IACore::Utils::BinarySearchRight(nums, 20);
+    IAT_CHECK(itRight != nums.end());
+    IAT_CHECK_EQ(*itRight, 30);                            // Points to 30
+    IAT_CHECK_EQ(std::distance(nums.begin(), itRight), 4); // Index 4
+
+    // Search for non-existent
+    auto itFail = IACore::Utils::BinarySearchLeft(nums, 99);
+    IAT_CHECK(itFail == nums.end());
+
+    return TRUE;
+}
+
+// -------------------------------------------------------------------------
+// 5. Hashing Basics
+// -------------------------------------------------------------------------
+BOOL TestHashBasics()
+{
+    UINT64 h1 = IACore::Utils::ComputeHash(10, 20.5f, "Hello");
+    UINT64 h2 = IACore::Utils::ComputeHash(10, 20.5f, "Hello");
+    UINT64 h3 = IACore::Utils::ComputeHash(10, 20.5f, "World");
+
+    // Determinism
+    IAT_CHECK_EQ(h1, h2);
+
+    // Differentiation
+    IAT_CHECK_NEQ(h1, h3);
+
+    // Order sensitivity (Golden ratio combine should care about order)
+    // Hash(A, B) != Hash(B, A)
+    UINT64 orderA = IACore::Utils::ComputeHash(1, 2);
+    UINT64 orderB = IACore::Utils::ComputeHash(2, 1);
+    IAT_CHECK_NEQ(orderA, orderB);
+
+    return TRUE;
+}
+
+// -------------------------------------------------------------------------
+// 6. Macro Verification (IA_MAKE_HASHABLE)
+// -------------------------------------------------------------------------
+BOOL TestHashMacro()
+{
+    TestVec3 v1{1.0f, 2.0f, 3.0f};
+    TestVec3 v2{1.0f, 2.0f, 3.0f};
+    TestVec3 v3{1.0f, 2.0f, 4.0f};
+
+    ankerl::unordered_dense::hash<TestVec3> hasher;
+
+    UINT64 h1 = hasher(v1);
+    UINT64 h2 = hasher(v2);
+    UINT64 h3 = hasher(v3);
+
+    IAT_CHECK_EQ(h1, h2);  // Same content = same hash
+    IAT_CHECK_NEQ(h1, h3); // Different content = different hash
+
+    // -------------------------------------------------------------
+    // Verify ComputeHash integration
+    // -------------------------------------------------------------
+
+    UINT64 hManual = 0;
+    IACore::Utils::HashCombine(hManual, v1);
+
+    UINT64 hWrapper = IACore::Utils::ComputeHash(v1);
+
+    // This proves ComputeHash found the specialization and mixed it correctly
+    IAT_CHECK_EQ(hManual, hWrapper);
+
+    // Verify the avalanche effect took place (hWrapper should NOT be h1)
+    IAT_CHECK_NEQ(h1, hWrapper);
+
+    return TRUE;
+}
+
+// -------------------------------------------------------------------------
+// Registration
+// -------------------------------------------------------------------------
+IAT_BEGIN_TEST_LIST()
+IAT_ADD_TEST(TestHexConversion);
+IAT_ADD_TEST(TestHexErrors);
+IAT_ADD_TEST(TestSort);
+IAT_ADD_TEST(TestBinarySearch);
+IAT_ADD_TEST(TestHashBasics);
+IAT_ADD_TEST(TestHashMacro);
+IAT_END_TEST_LIST()
+
+IAT_END_BLOCK()
+
+IAT_REGISTER_ENTRY(Core, Utils)