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diff --git a/src/bin/dhcp4/tests/simple_parser4_unittest.cc b/src/bin/dhcp4/tests/simple_parser4_unittest.cc
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+// Copyright (C) 2016-2017 Internet Systems Consortium, Inc. ("ISC")
+//
+// This Source Code Form is subject to the terms of the Mozilla Public
+// License, v. 2.0. If a copy of the MPL was not distributed with this
+// file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+#include <config.h>
+#include <gtest/gtest.h>
+#include <dhcpsrv/parsers/simple_parser4.h>
+#include <dhcp4/tests/dhcp4_test_utils.h>
+#include <cc/data.h>
+
+using namespace isc::data;
+
+namespace isc {
+namespace dhcp {
+namespace test {
+
+/// @brief DHCP Parser test fixture class
+class SimpleParser4Test : public ::testing::Test {
+public:
+ /// @brief Checks if specified map has an integer parameter with expected value
+ ///
+ /// @param map map to be checked
+ /// @param param_name name of the parameter to be checked
+ /// @param exp_value expected value of the parameter.
+ void checkIntegerValue(const ConstElementPtr& map, const std::string& param_name,
+ int64_t exp_value) {
+
+ // First check if the passed element is a map.
+ ASSERT_EQ(Element::map, map->getType());
+
+ // Now try to get the element being checked
+ ConstElementPtr elem = map->get(param_name);
+ ASSERT_TRUE(elem);
+
+ // Now check if it's indeed integer
+ ASSERT_EQ(Element::integer, elem->getType());
+
+ // Finally, check if its value meets expectation.
+ EXPECT_EQ(exp_value, elem->intValue());
+ }
+
+ /// @brief Checks if specified map has a string parameter with expected value
+ ///
+ /// @param map map to be checked
+ /// @param param_name name of the parameter to be checked
+ /// @param exp_value expected value of the parameter.
+ void checkStringValue(const ConstElementPtr& map, const std::string& param_name,
+ std::string exp_value) {
+
+ // First check if the passed element is a map.
+ ASSERT_EQ(Element::map, map->getType());
+
+ // Now try to get the element being checked
+ ConstElementPtr elem = map->get(param_name);
+ ASSERT_TRUE(elem);
+
+ // Now check if it's indeed integer
+ ASSERT_EQ(Element::string, elem->getType());
+
+ // Finally, check if its value meets expectation.
+ EXPECT_EQ(exp_value, elem->stringValue());
+ }
+
+ /// @brief Checks if specified map has a boolean parameter with expected value
+ ///
+ /// @param map map to be checked
+ /// @param param_name name of the parameter to be checked
+ /// @param exp_value expected value of the parameter.
+ void checkBoolValue(const ConstElementPtr& map, const std::string& param_name,
+ bool exp_value) {
+
+ // First check if the passed element is a map.
+ ASSERT_EQ(Element::map, map->getType());
+
+ // Now try to get the element being checked
+ ConstElementPtr elem = map->get(param_name);
+ ASSERT_TRUE(elem);
+
+ // Now check if it's indeed integer
+ ASSERT_EQ(Element::boolean, elem->getType());
+
+ // Finally, check if its value meets expectation.
+ EXPECT_EQ(exp_value, elem->boolValue());
+ }
+};
+
+// This test checks if global defaults are properly set for DHCPv4.
+TEST_F(SimpleParser4Test, globalDefaults4) {
+
+ ElementPtr empty = parseJSON("{ }");
+ size_t num = 0;
+
+ EXPECT_NO_THROW(num = SimpleParser4::setAllDefaults(empty));
+
+
+ // We expect at least 3 parameters to be inserted.
+ EXPECT_TRUE(num >= 3);
+
+ checkIntegerValue(empty, "valid-lifetime", 7200);
+ checkIntegerValue(empty, "rebind-timer", 1800);
+ checkIntegerValue(empty, "renew-timer", 900);
+
+ // Make sure that preferred-lifetime is not set for v4 (it's v6 only
+ // parameter)
+ EXPECT_FALSE(empty->get("preferred-lifetime"));
+}
+
+// This test checks if the parameters can be inherited from the global
+// scope to the subnet scope.
+TEST_F(SimpleParser4Test, inheritGlobalToSubnet4) {
+ ElementPtr global = parseJSON("{ \"renew-timer\": 1,"
+ " \"rebind-timer\": 2,"
+ " \"valid-lifetime\": 4,"
+ " \"subnet4\": [ { \"renew-timer\": 100 } ] "
+ "}");
+ ConstElementPtr subnets = global->find("subnet4");
+ ASSERT_TRUE(subnets);
+ ConstElementPtr subnet = subnets->get(0);
+ ASSERT_TRUE(subnet);
+
+ // we should inherit 3 parameters. Renew-timer should remain intact,
+ // as it was already defined in the subnet scope.
+ size_t num;
+ EXPECT_NO_THROW(num = SimpleParser4::deriveParameters(global));
+ EXPECT_EQ(2, num);
+
+ // Check the values. 2 of them are inherited, while the third one
+ // was already defined in the subnet, so should not be inherited.
+ checkIntegerValue(subnet, "renew-timer", 100);
+ checkIntegerValue(subnet, "rebind-timer", 2);
+ checkIntegerValue(subnet, "valid-lifetime", 4);
+}
+
+// This test checks if the parameters in "subnet4" are assigned default values
+// if not explicitly specified.
+TEST_F(SimpleParser4Test, subnetDefaults4) {
+ ElementPtr global = parseJSON("{ \"renew-timer\": 1,"
+ " \"rebind-timer\": 2,"
+ " \"valid-lifetime\": 4,"
+ " \"subnet4\": [ { } ] "
+ "}");
+
+ size_t num = 0;
+ EXPECT_NO_THROW(num = SimpleParser4::setAllDefaults(global));
+ EXPECT_LE(1, num); // at least 1 parameter has to be modified
+
+ ConstElementPtr subnets = global->find("subnet4");
+ ASSERT_TRUE(subnets);
+ ConstElementPtr subnet = subnets->get(0);
+ ASSERT_TRUE(subnet);
+
+ // we should have "id" parameter with the default value of 0 added for us.
+ checkIntegerValue(subnet, "id", 0);
+}
+
+// This test checks if the parameters in option-data are assigned default values
+// if not explicitly specified.
+TEST_F(SimpleParser4Test, optionDataDefaults4) {
+ ElementPtr global = parseJSON("{ \"renew-timer\": 1,"
+ " \"rebind-timer\": 2,"
+ " \"valid-lifetime\": 4,"
+ " \"option-data\": [ { } ] "
+ "}");
+
+ size_t num = 0;
+ EXPECT_NO_THROW(num = SimpleParser4::setAllDefaults(global));
+ EXPECT_LE(1, num); // at least 1 parameter has to be modified
+
+ ConstElementPtr options = global->find("option-data");
+ ASSERT_TRUE(options);
+ ConstElementPtr option = options->get(0);
+ ASSERT_TRUE(option);
+
+ // we should have appropriate default value set. See
+ // SimpleParser4::OPTION4_DEFAULTS for a list of default values.
+ checkStringValue(option, "space", "dhcp4");
+ checkBoolValue(option, "csv-format", true);
+}
+
+// This test checks if the parameters in option-data are assigned default values
+// if not explicitly specified.
+TEST_F(SimpleParser4Test, optionDefDefaults4) {
+ ElementPtr global = parseJSON("{ "
+ " \"option-def\": [ { } ] "
+ "}");
+
+ size_t num = 0;
+ EXPECT_NO_THROW(num = SimpleParser4::setAllDefaults(global));
+ EXPECT_LE(1, num); // at least 1 parameter has to be modified
+
+ ConstElementPtr defs = global->find("option-def");
+ ASSERT_TRUE(defs);
+ ASSERT_EQ(1, defs->size());
+ ConstElementPtr def = defs->get(0);
+ ASSERT_TRUE(def);
+
+ // we should have appropriate default value set. See
+ // SimpleParser4::OPTION4_DEFAULTS for a list of default values.
+ checkStringValue(def, "record-types", "");
+ checkStringValue(def, "space", "dhcp4");
+ checkStringValue(def, "encapsulate", "");
+ checkBoolValue(def, "array", false);
+}
+
+};
+};
+};
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