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diff --git a/src/lib/yang/tests/translator_host_unittests.cc b/src/lib/yang/tests/translator_host_unittests.cc
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+// Copyright (C) 2018-2021 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 <yang/translator_host.h>
+#include <yang/yang_models.h>
+#include <yang/tests/sysrepo_setup.h>
+
+#include <gtest/gtest.h>
+#include <sstream>
+
+using namespace std;
+using namespace isc;
+using namespace isc::data;
+using namespace isc::yang;
+using namespace isc::yang::test;
+using namespace sysrepo;
+
+namespace {
+
+/// @brief Translator name.
+extern char const host_reservations[] = "host reservations";
+
+/// @brief Test fixture class for @ref TranslatorHosts.
+class TranslatorHostsTestv4 :
+ public GenericTranslatorTest<host_reservations, TranslatorHosts> {
+public:
+
+ /// Constructor.
+ TranslatorHostsTestv4() {
+ model_ = KEA_DHCP4_SERVER;
+ }
+};
+
+class TranslatorHostsTestv6 :
+ public GenericTranslatorTest<host_reservations, TranslatorHosts> {
+public:
+
+ /// Constructor.
+ TranslatorHostsTestv6() {
+ model_ = KEA_DHCP6_SERVER;
+ }
+};
+
+// This test verifies that an empty host reservation list can be properly
+// translated from YANG to JSON.
+TEST_F(TranslatorHostsTestv6, getEmpty) {
+ // Get the host reservation list and check if it is empty.
+ const string& xpath =
+ "/kea-dhcp6-server:config/subnet6[id='111']";
+ ConstElementPtr hosts;
+ EXPECT_NO_THROW(hosts = t_obj_->getHosts(xpath));
+ ASSERT_FALSE(hosts);
+}
+
+// This test verifies that one host reservation can be properly
+// translated from YANG to JSON.
+TEST_F(TranslatorHostsTestv6, get) {
+ // Create the subnet 2001:db8::/48 #111.
+ const string& xpath =
+ "/kea-dhcp6-server:config/subnet6[id='111']";
+ S_Val v_subnet(new Val("2001:db8::/48", SR_STRING_T));
+ const string& subnet = xpath + "/subnet";
+ EXPECT_NO_THROW(sess_->set_item(subnet.c_str(), v_subnet));
+
+ // Create the host reservation for 2001:db8::1.
+ ostringstream shost;
+ shost << xpath + "/host[identifier-type='hw-address']"
+ << "[identifier='00:01:02:03:04:05']";
+ const string& xaddr = shost.str() + "/ip-addresses";
+ S_Val s_addr(new Val("2001:db8::1"));
+ EXPECT_NO_THROW(sess_->set_item(xaddr.c_str(), s_addr));
+
+ // Get the host.
+ ConstElementPtr host;
+ EXPECT_NO_THROW(host = t_obj_->getHost(shost.str()));
+ ASSERT_TRUE(host);
+ ElementPtr expected = Element::createMap();
+ ElementPtr addresses = Element::createList();
+ addresses->add(Element::create(string("2001:db8::1")));
+ expected->set("hw-address", Element::create(string("00:01:02:03:04:05")));
+ expected->set("ip-addresses", addresses);
+ EXPECT_TRUE(expected->equals(*host));
+
+ // Get the host reservation list and check if the host reservation
+ // is in it.
+ ConstElementPtr hosts;
+ EXPECT_NO_THROW(hosts = t_obj_->getHosts(xpath));
+ ASSERT_TRUE(hosts);
+ ASSERT_EQ(Element::list, hosts->getType());
+ ASSERT_EQ(1, hosts->size());
+ EXPECT_TRUE(host->equals(*hosts->get(0)));
+}
+
+// This test verifies that an empty host reservation list can be properly
+// translated from JSON to YANG.
+TEST_F(TranslatorHostsTestv6, setEmpty) {
+ // Create the subnet 2001:db8::/48 #111.
+ const string& xpath =
+ "/kea-dhcp6-server:config/subnet6[id='111']";
+ S_Val v_subnet(new Val("2001:db8::/48", SR_STRING_T));
+ const string& subnet = xpath + "/subnet";
+ EXPECT_NO_THROW(sess_->set_item(subnet.c_str(), v_subnet));
+
+ // Set empty list.
+ ConstElementPtr hosts = Element::createList();
+ EXPECT_NO_THROW(t_obj_->setHosts(xpath, hosts));
+
+ // Get it back.
+ hosts.reset();
+ EXPECT_NO_THROW(hosts = t_obj_->getHosts(xpath));
+ ASSERT_FALSE(hosts);
+}
+
+// This test verifies that one host reservation can be properly
+// translated from JSON to YANG.
+TEST_F(TranslatorHostsTestv4, set) {
+ // Create the subnet 10.0.0.0/14 #111.
+ const string& xpath =
+ "/kea-dhcp4-server:config/subnet4[id='111']";
+ S_Val v_subnet(new Val("10.0.0.0/24", SR_STRING_T));
+ const string& subnet = xpath + "/subnet";
+ EXPECT_NO_THROW(sess_->set_item(subnet.c_str(), v_subnet));
+
+ // Set one host.
+ ElementPtr hosts = Element::createList();
+ ElementPtr host = Element::createMap();
+ host->set("flex-id", Element::create(string("00:ff")));
+ host->set("ip-address", Element::create(string("10.0.0.1")));
+ host->set("hostname", Element::create(string("foo")));
+ hosts->add(host);
+ EXPECT_NO_THROW(t_obj_->setHosts(xpath, hosts));
+
+ // Get it back.
+ hosts.reset();
+ EXPECT_NO_THROW(hosts = t_obj_->getHosts(xpath));
+ ASSERT_TRUE(hosts);
+ ASSERT_EQ(Element::list, hosts->getType());
+ ASSERT_EQ(1, hosts->size());
+ EXPECT_TRUE(host->equals(*hosts->get(0)));
+
+ // Check it validates.
+ EXPECT_NO_THROW(sess_->validate());
+}
+
+// This test verifies that several host reservations can be properly
+// translated from YANG to JSON.
+TEST_F(TranslatorHostsTestv6, getMany) {
+ // Create the subnet 2001:db8::/48 #111.
+ const string& xpath =
+ "/kea-dhcp6-server:config/subnet6[id='111']";
+ S_Val v_subnet(new Val("2001:db8::/48", SR_STRING_T));
+ const string& subnet = xpath + "/subnet";
+ EXPECT_NO_THROW(sess_->set_item(subnet.c_str(), v_subnet));
+
+ // Create the host reservation for 2001:db8::1.
+ ostringstream shost;
+ shost << xpath + "/host[identifier-type='hw-address']"
+ << "[identifier='00:01:02:03:04:05']";
+ const string& xaddr = shost.str() + "/ip-addresses";
+ S_Val s_addr(new Val("2001:db8::1"));
+ EXPECT_NO_THROW(sess_->set_item(xaddr.c_str(), s_addr));
+
+ // Create another reservation for 2001:db8::2
+ ostringstream shost2;
+ shost2 << xpath + "/host[identifier-type='hw-address']"
+ << "[identifier='00:01:0a:0b:0c:0d']";
+ const string xaddr2 = shost2.str() + "/ip-addresses";
+ S_Val s_addr2(new Val("2001:db8::2"));
+ EXPECT_NO_THROW(sess_->set_item(xaddr2.c_str(), s_addr2));
+
+ // Get the host.
+ ConstElementPtr hosts;
+ EXPECT_NO_THROW(hosts = t_obj_->getHosts(xpath));
+ ASSERT_TRUE(hosts);
+
+ EXPECT_EQ(hosts->str(),
+ "[ { \"hw-address\": \"00:01:02:03:04:05\", "
+ "\"ip-addresses\": [ \"2001:db8::1\" ] }, "
+ "{ \"hw-address\": \"00:01:0a:0b:0c:0d\", "
+ "\"ip-addresses\": [ \"2001:db8::2\" ] } ]");
+}
+
+}; // end of anonymous namespace
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