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diff --git a/tests/cpp-unit-tests/PluginParametersTest.cc b/tests/cpp-unit-tests/PluginParametersTest.cc
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+++ b/tests/cpp-unit-tests/PluginParametersTest.cc
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+/* Copyright (C) 2012 Red Hat
+
+ This file is part of IcedTea.
+
+ IcedTea 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 2, or (at your option)
+ any later version.
+
+ IcedTea 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 IcedTea; see the file COPYING.  If not, write to the
+ Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+ 02110-1301 USA.
+
+ Linking this library statically or dynamically with other modules is
+ making a combined work based on this library.  Thus, the terms and
+ conditions of the GNU General Public License cover the whole
+ combination.
+
+ As a special exception, the copyright holders of this library give you
+ permission to link this library with independent modules to produce an
+ executable, regardless of the license terms of these independent
+ modules, and to copy and distribute the resulting executable under
+ terms of your choice, provided that you also meet, for each linked
+ independent module, the terms and conditions of the license of that
+ module.  An independent module is a module which is not derived from
+ or based on this library.  If you modify this library, you may extend
+ this exception to your version of the library, but you are not
+ obligated to do so.  If you do not wish to do so, delete this
+ exception statement from your version. */
+
+/******************************************************************************
+ * Unit tests for functions related to sending applet parameters              *
+ * (key value pairs).                                                         *
+ ******************************************************************************/
+
+#include <UnitTest++.h>
+
+#include "IcedTeaNPPlugin.h"
+
+
+/* Not normally exposed */
+std::string escape_parameter_string(const char* to_encode);
+
+TEST(escape_parameter_string) {
+	CHECK_EQUAL("\\n", escape_parameter_string("\n"));
+	CHECK_EQUAL("\\\\", escape_parameter_string("\\"));
+	CHECK_EQUAL("\\:", escape_parameter_string(";"));
+
+	CHECK_EQUAL(std::string("test") + "\\n" + "\\\\" + "\\:",
+			escape_parameter_string("test\n\\;"));
+}
+
+/* Not normally exposed */
+std::string plugin_parameters_string(int argc, char* argn[], char* argv[]);
+
+TEST(plugin_parameters_string) {
+
+	/* test empty */{
+		const char* argn[] = { "" };
+		const char* argv[] = { "" };
+		CHECK_EQUAL("",
+				plugin_parameters_string(0, (char**)argn, (char**)argv));
+	}
+
+	/* test simple key & value */{
+		const char* argn[] = { "key" };
+		const char* argv[] = { "value" };
+		CHECK_EQUAL("key;value;",
+				plugin_parameters_string(1, (char**)argn, (char**)argv));
+	}
+
+	/* test key & value characters that require escaping */{
+		const char* argn[] = { "key\\" };
+		const char* argv[] = { "value;" };
+		CHECK_EQUAL("key\\\\;value\\:;",
+				plugin_parameters_string(1, (char**)argn, (char**)argv));
+	}
+
+	/* multiple key & value pairs that require escaping*/{
+		const char* argn[] = { "key1\\", "key2\\" };
+		const char* argv[] = { "value1;", "value2;" };
+		CHECK_EQUAL("key1\\\\;value1\\:;key2\\\\;value2\\:;",
+				plugin_parameters_string(2, (char**)argn, (char**)argv));
+	}
+}
+
+