1
  2
  3
  4
  5
  6
  7
  8
  9
 10
 11
 12
 13
 14
 15
 16
 17
 18
 19
 20
 21
 22
 23
 24
 25
 26
 27
 28
 29
 30
 31
 32
 33
 34
 35
 36
 37
 38
 39
 40
 41
 42
 43
 44
 45
 46
 47
 48
 49
 50
 51
 52
 53
 54
 55
 56
 57
 58
 59
 60
 61
 62
 63
 64
 65
 66
 67
 68
 69
 70
 71
 72
 73
 74
 75
 76
 77
 78
 79
 80
 81
 82
 83
 84
 85
 86
 87
 88
 89
 90
 91
 92
 93
 94
 95
 96
 97
 98
 99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
// Copyright (C) 2018-2024 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 <cc/data.h>
#include <dhcpsrv/cfgmgr.h>
#include <dhcpsrv/parsers/dhcp_queue_control_parser.h>
#include <testutils/multi_threading_utils.h>
#include <testutils/test_to_element.h>
#include <util/multi_threading_mgr.h>
#include <gtest/gtest.h><--- Include file:  not found. Please note: Cppcheck does not need standard library headers to get proper results.

using namespace isc::data;
using namespace isc::dhcp;
using namespace isc::test;
using namespace isc::util;

namespace {

/// @brief Test fixture class for @c DHCPQueueControlParser
class DHCPQueueControlParserTest : public ::testing::Test {
public:
    /// @brief Constructor
    DHCPQueueControlParserTest() = default;

    /// @brief Destructor
    virtual ~DHCPQueueControlParserTest() = default;

protected:
    /// @brief Setup for each test.
    ///
    /// Clears the configuration in the @c CfgMgr.
    virtual void SetUp();

    /// @brief Cleans up after each test.
    ///
    /// Clears the configuration in the @c CfgMgr.
    virtual void TearDown();
};

void
DHCPQueueControlParserTest::SetUp() {
    CfgMgr::instance().clear();
}

void
DHCPQueueControlParserTest::TearDown() {
    CfgMgr::instance().clear();
}

// Verifies that DHCPQueueControlParser handles
// expected valid dhcp-queue-control content
TEST_F(DHCPQueueControlParserTest, validContent) {<--- syntax error
    struct Scenario {
        std::string description_;
        std::string json_;
    };

    std::vector<Scenario> scenarios = {
        {
        "queue disabled",
        "{ \n"
        "   \"enable-queue\": false \n"
        "} \n"
        },
        {
        "queue disabled, arbitrary content allowed",
        "{ \n"
        "   \"enable-queue\": false, \n"
        "   \"foo\": \"bogus\", \n"
        "   \"random-int\" : 1234 \n"
        "} \n"
        },
        {
        "queue enabled, with queue-type",
        "{ \n"
        "   \"enable-queue\": true, \n"
        "   \"queue-type\": \"some-type\" \n"
        "} \n"
        },
        {
        "queue enabled with queue-type and arbitrary content",
        "{ \n"
        "   \"enable-queue\": true, \n"
        "   \"queue-type\": \"some-type\", \n"
        "   \"foo\": \"bogus\", \n"
        "   \"random-int\" : 1234 \n"
        "} \n"
        }
    };

    // Iterate over the valid scenarios and verify they succeed.
    ConstElementPtr config_elems;
    ConstElementPtr queue_control;
    for (auto const& scenario : scenarios) {
        SCOPED_TRACE(scenario.description_);
        {
            // Construct the config JSON
            ASSERT_NO_THROW(config_elems = Element::fromJSON(scenario.json_))
                            << "invalid JSON, test is broken";

            // Parsing config into a queue control should succeed.
            DHCPQueueControlParser parser;
            try {
                queue_control = parser.parse(config_elems, false);
            } catch (const std::exception& ex) {
                ADD_FAILURE() << "parser threw an exception: " << ex.what();
            }

            // Verify the resultant queue control.
            ASSERT_TRUE(queue_control);

            // The parser should have created a duplicate of the
            // configuration elements.
            ASSERT_TRUE(queue_control.get() != config_elems.get());
            EXPECT_TRUE(queue_control->equals(*config_elems));
        }
    }
}

// Verifies that DHCPQueueControlParser correctly catches
// invalid dhcp-queue-control content
TEST_F(DHCPQueueControlParserTest, invalidContent) {
    struct Scenario {
        std::string description_;
        std::string json_;
    };

    std::vector<Scenario> scenarios = {
        {
        "enable-queue missing",
        "{ \n"
        "   \"enable-type\": \"some-type\" \n"
        "} \n"
        },
        {
        "enable-queue not boolean",
        "{ \n"
        "   \"enable-queue\": \"always\" \n"
        "} \n"
        },
        {
        "queue enabled, type missing",
        "{ \n"
        "   \"enable-queue\": true \n"
        "} \n"
        },
        {
        "queue enabled, type not a string",
        "{ \n"
        "   \"enable-queue\": true, \n"
        "   \"queue-type\": 7777 \n"
        "} \n"
        }
    };

    // Iterate over the valid scenarios and verify they succeed.
    ConstElementPtr config_elems;
    ConstElementPtr queue_control;
    for (auto const& scenario : scenarios) {
        SCOPED_TRACE(scenario.description_);
        {
            // Construct the config JSON
            ASSERT_NO_THROW(config_elems = Element::fromJSON(scenario.json_))
                            << "invalid JSON, test is broken";

            // Parsing config into a queue control should succeed.
            DHCPQueueControlParser parser;
            EXPECT_THROW(parser.parse(config_elems, false), DhcpConfigError);
        }
    }
}

// Verifies that DHCPQueueControlParser disables the queue when multi-threading
// is enabled
TEST_F(DHCPQueueControlParserTest, multiThreading) {
    // Enable config with some queue type.
    std::string config =
        "{ \n"
        "   \"enable-queue\": true, \n"
        "   \"queue-type\": \"some-type\" \n"
        "} \n";

    // Construct the config JSON.
    ConstElementPtr config_elems;
    ASSERT_NO_THROW(config_elems = Element::fromJSON(config))
        << "invalid JSON, test is broken";

    // Parse config.
    DHCPQueueControlParser parser;
    ConstElementPtr queue_control;
    ASSERT_NO_THROW(queue_control = parser.parse(config_elems, false))
        << "parse fails, test is broken";

    // Verify that queue is enabled.
    ASSERT_TRUE(queue_control);
    ASSERT_TRUE(queue_control->get("enable-queue"));
    EXPECT_EQ("true", queue_control->get("enable-queue")->str());

    // Retry with multi-threading.
    ASSERT_NO_THROW(queue_control = parser.parse(config_elems, true));
    ASSERT_TRUE(queue_control);
    ASSERT_TRUE(queue_control->get("enable-queue"));
    EXPECT_EQ("false", queue_control->get("enable-queue")->str());
}

}  // anonymous namespace