Major plugin refactor and cleanup.

Switched to POCO library for unified platform/library interface.
Deprecated the external module API. It was creating more problems than solving.
Removed most built-in libraries in favor of system libraries for easier maintenance.
Cleaned and secured code with help from static analyzers.

vendor/POCO/Foundation/testsuite/src/RandomTest.cpp

@@ -0,0 +1,149 @@
+//
+// RandomTest.cpp
+//
+// Copyright (c) 2004-2006, Applied Informatics Software Engineering GmbH.
+// and Contributors.
+//
+// SPDX-License-Identifier:	BSL-1.0
+//
+
+
+#include "RandomTest.h"
+#include "CppUnit/TestCaller.h"
+#include "CppUnit/TestSuite.h"
+#include "Poco/Random.h"
+#include <vector>
+#include <cmath>
+
+
+using Poco::UInt32;
+
+
+RandomTest::RandomTest(const std::string& name): CppUnit::TestCase(name)
+{
+}
+
+
+RandomTest::~RandomTest()
+{
+}
+
+
+void RandomTest::testSequence1()
+{
+	Poco::Random rnd1;
+	Poco::Random rnd2;
+	rnd1.seed(12345);
+	rnd2.seed(12345);
+	for (int i = 0; i < 100; ++i)
+	{
+		assertTrue (rnd1.next() == rnd2.next());
+	}
+}
+
+
+void RandomTest::testSequence2()
+{
+	Poco::Random rnd1;
+	Poco::Random rnd2;
+	rnd1.seed(12345);
+	rnd2.seed(54321);
+	
+	bool equals = true;	
+	for (int i = 0; i < 20; ++i)
+	{
+		if (rnd1.next() != rnd2.next())
+		{
+			equals = false;
+			break;
+		}
+	}
+	assertTrue (!equals);
+}
+
+
+void RandomTest::testDistribution1()
+{
+	Poco::Random rnd;
+	rnd.seed(123456);
+	const int n = 11;
+	int d[n] = {0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0};
+	for (int i = 0; i < 100; ++i)
+	{
+		d[rnd.next() % n] = 1;
+	}
+	int sum = 0;
+	for (int k = 0; k < n; ++k) sum += d[k];
+	
+	assertTrue (sum == n);
+}
+
+
+void RandomTest::testDistribution2()
+{
+	Poco::Random rnd;
+	rnd.seed();
+	const int n = 101;
+	std::vector<int> d(n, 0);
+	for (int i = 0; i < 10000; ++i)
+	{
+		d[rnd.next(n)]++;
+	}
+	int sum = 0;
+	for (int k = 0; k < n; ++k) sum += d[k];
+	int avg = sum/n;
+	int var = 0;
+	for (int k = 0; k < n; ++k) var += (d[k] - avg)*(d[k] - avg);
+	var /= n;
+	int sd = int(std::sqrt((double) var));
+	
+	assertTrue (95 < avg && avg < 105);
+	assertTrue (sd < 15);
+}
+
+
+void RandomTest::testDistribution3()
+{
+	Poco::Random rnd;
+	rnd.seed();
+	const int n = 101;
+	std::vector<int> d(n, 0);
+	for (int i = 0; i < 10000; ++i)
+	{
+		d[int(rnd.nextFloat()*n)]++;
+	}
+	int sum = 0;
+	for (int k = 0; k < n; ++k) sum += d[k];
+	int avg = sum/n;
+	int var = 0;
+	for (int k = 0; k < n; ++k) var += (d[k] - avg)*(d[k] - avg);
+	var /= n;
+	int sd = int(std::sqrt((double) var));
+	
+	assertTrue (95 < avg && avg < 105);
+	assertTrue (sd < 15);
+}
+
+
+void RandomTest::setUp()
+{
+}
+
+
+void RandomTest::tearDown()
+{
+}
+
+
+CppUnit::Test* RandomTest::suite()
+{
+	CppUnit::TestSuite* pSuite = new CppUnit::TestSuite("RandomTest");
+
+	CppUnit_addTest(pSuite, RandomTest, testSequence1);
+	CppUnit_addTest(pSuite, RandomTest, testSequence2);
+	CppUnit_addTest(pSuite, RandomTest, testDistribution1);
+	CppUnit_addTest(pSuite, RandomTest, testDistribution2);
+	CppUnit_addTest(pSuite, RandomTest, testDistribution3);
+
+	return pSuite;
+}