ProcessOps
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Tests/Unit/ProcessOps.cpp
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247
Tests/Unit/ProcessOps.cpp
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// IACore-OSS; The Core Library for All IA Open Source Projects
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// Copyright (C) 2025 IAS (ias@iasoft.dev)
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//
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// This program is free software: you can redistribute it and/or modify
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// it under the terms of the GNU General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// This program is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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//
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// You should have received a copy of the GNU General Public License
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// along with this program. If not, see <https://www.gnu.org/licenses/>.
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#include <IACore/ProcessOps.hpp>
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#include <IACore/IATest.hpp>
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using namespace IACore;
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// -----------------------------------------------------------------------------
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// Platform Abstraction for Test Commands
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// -----------------------------------------------------------------------------
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#if IA_PLATFORM_WINDOWS
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#define CMD_ECHO_EXE "cmd.exe"
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// Windows requires /c to run a command string
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#define CMD_ARG_PREFIX "/c"
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#define NULL_DEVICE "NUL"
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#else
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#define CMD_ECHO_EXE "/bin/echo"
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#define CMD_ARG_PREFIX ""
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#define NULL_DEVICE "/dev/null"
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#endif
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IAT_BEGIN_BLOCK(Core, Process)
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// -------------------------------------------------------------------------
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// 1. Basic Execution (Exit Code 0)
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// -------------------------------------------------------------------------
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BOOL TestBasicRun()
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{
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// Simple "echo hello"
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String captured;
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auto result = ProcessOps::SpawnProcessSync(CMD_ECHO_EXE, CMD_ARG_PREFIX " HelloIA",
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[&](StringView line) {
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captured = line;
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}
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);
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IAT_CHECK(result.has_value());
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IAT_CHECK_EQ(*result, 0); // Exit code 0
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// Note: Echo might add newline, but your LineBuffer trims/handles it.
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// We check if "HelloIA" is contained or equal.
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IAT_CHECK(captured.find("HelloIA") != String::npos);
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return TRUE;
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}
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// -------------------------------------------------------------------------
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// 2. Argument Parsing
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// -------------------------------------------------------------------------
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BOOL TestArguments()
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{
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Vector<String> lines;
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// Echo two distinct words.
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// Windows: cmd.exe /c echo one two
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// Linux: /bin/echo one two
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String args = String(CMD_ARG_PREFIX) + " one two";
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if(args[0] == ' ') args.erase(0, 1); // cleanup space if prefix empty
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auto result = ProcessOps::SpawnProcessSync(CMD_ECHO_EXE, args,
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[&](StringView line) {
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lines.push_back(String(line));
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}
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);
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IAT_CHECK_EQ(*result, 0);
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IAT_CHECK(lines.size() > 0);
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// Output should contain "one two"
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IAT_CHECK(lines[0].find("one two") != String::npos);
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return TRUE;
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}
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// -------------------------------------------------------------------------
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// 3. Error / Non-Zero Exit Codes
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// -------------------------------------------------------------------------
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BOOL TestExitCodes()
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{
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// We need a command that returns non-zero.
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// Windows: cmd /c exit 1
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// Linux: /bin/sh -c "exit 1"
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String cmd, arg;
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#if IA_PLATFORM_WINDOWS
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cmd = "cmd.exe";
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arg = "/c exit 42";
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#else
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cmd = "/bin/sh";
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arg = "-c \"exit 42\""; // quotes needed for sh -c
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#endif
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auto result = ProcessOps::SpawnProcessSync(cmd, arg, [](StringView){});
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IAT_CHECK(result.has_value());
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IAT_CHECK_EQ(*result, 42);
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return TRUE;
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}
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// -------------------------------------------------------------------------
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// 4. Missing Executable Handling
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// -------------------------------------------------------------------------
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BOOL TestMissingExe()
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{
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// Try to run a random string
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auto result = ProcessOps::SpawnProcessSync("sdflkjghsdflkjg", "", [](StringView){});
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// Windows: CreateProcess usually fails -> returns unexpected
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// Linux: execvp fails inside child, returns 127 via waitpid
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#if IA_PLATFORM_WINDOWS
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IAT_CHECK_NOT(result.has_value()); // Should be an error string
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#else
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// Linux fork succeeds, but execvp fails, returning 127
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IAT_CHECK(result.has_value());
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IAT_CHECK_EQ(*result, 127);
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#endif
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return TRUE;
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}
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// -------------------------------------------------------------------------
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// 5. Line Buffer Logic (The 4096 split test)
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// -------------------------------------------------------------------------
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BOOL TestLargeOutput()
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{
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// We need to generate output larger than the internal 4096 buffer
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// to ensure the "partial line" logic works when a line crosses a buffer boundary.
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// We will construct a python script or shell command to print a massive line.
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// Cross platform approach: Use Python if available, or just a long echo.
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// Let's assume 'python3' or 'python' is in path, otherwise skip?
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// Safer: Use pure shell loop if possible, or just a massive command line arg.
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String massiveString;
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massiveString.reserve(5000);
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for(int i=0; i<500; ++i) massiveString += "1234567890"; // 5000 chars
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String cmd, arg;
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#if IA_PLATFORM_WINDOWS
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cmd = "cmd.exe";
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// Windows has command line length limits (~8k), 5k is safe.
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arg = "/c echo " + massiveString;
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#else
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cmd = "/bin/echo";
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arg = massiveString;
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#endif
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String captured;
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auto result = ProcessOps::SpawnProcessSync(cmd, arg,
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[&](StringView line) {
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captured += line;
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}
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);
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IAT_CHECK(result.has_value());
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IAT_CHECK_EQ(*result, 0);
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// If the LineBuffer failed to stitch chunks, the length wouldn't match
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// or we would get multiple callbacks if we expected 1 line.
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IAT_CHECK_EQ(captured.length(), massiveString.length());
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return TRUE;
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}
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// -------------------------------------------------------------------------
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// 6. Multi-Line Handling
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// -------------------------------------------------------------------------
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BOOL TestMultiLine()
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{
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// Windows: cmd /c "echo A && echo B"
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// Linux: /bin/sh -c "echo A; echo B"
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String cmd, arg;
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#if IA_PLATFORM_WINDOWS
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cmd = "cmd.exe";
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arg = "/c \"echo LineA && echo LineB\"";
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#else
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cmd = "/bin/sh";
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arg = "-c \"echo LineA; echo LineB\"";
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#endif
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int lineCount = 0;
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bool foundA = false;
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bool foundB = false;
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UNUSED(ProcessOps::SpawnProcessSync(cmd, arg, [&](StringView line) {
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lineCount++;
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if (line.find("LineA") != String::npos) foundA = true;
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if (line.find("LineB") != String::npos) foundB = true;
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}));
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IAT_CHECK(foundA);
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IAT_CHECK(foundB);
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// We expect at least 2 lines.
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// (Windows sometimes echoes the command itself depending on echo settings, but we check contents)
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IAT_CHECK(lineCount >= 2);
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return TRUE;
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}
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// -------------------------------------------------------------------------
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// Registration
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// -------------------------------------------------------------------------
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IAT_BEGIN_TEST_LIST()
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IAT_ADD_TEST(TestBasicRun);
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IAT_ADD_TEST(TestArguments);
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IAT_ADD_TEST(TestExitCodes);
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IAT_ADD_TEST(TestMissingExe);
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IAT_ADD_TEST(TestLargeOutput);
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IAT_ADD_TEST(TestMultiLine);
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IAT_END_TEST_LIST()
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IAT_END_BLOCK()
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int main(int argc, char* argv[])
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{
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UNUSED(argc);
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UNUSED(argv);
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// Define runner (StopOnFail=false, Verbose=true)
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ia::iatest::runner<false, true> testRunner;
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// Run the BinaryReader block
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testRunner.testBlock<Core_Process>();
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return 0;
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}
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