1 /**
2  * Copyright © 2020 IBM Corporation
3  *
4  * Licensed under the Apache License, Version 2.0 (the "License");
5  * you may not use this file except in compliance with the License.
6  * You may obtain a copy of the License at
7  *
8  *     http://www.apache.org/licenses/LICENSE-2.0
9  *
10  * Unless required by applicable law or agreed to in writing, software
11  * distributed under the License is distributed on an "AS IS" BASIS,
12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13  * See the License for the specific language governing permissions and
14  * limitations under the License.
15  */
16 #include "exception_utils.hpp"
17 #include "journal.hpp"
18 #include "mock_journal.hpp"
19 
20 #include <exception>
21 #include <stdexcept>
22 #include <string>
23 #include <vector>
24 
25 #include <gtest/gtest.h>
26 
27 using namespace phosphor::power::regulators;
28 
29 TEST(ExceptionUtilsTests, GetMessages)
30 {
31     try
32     {
33         try
34         {
35             throw std::invalid_argument{"JSON element is not an array"};
36         }
37         catch (...)
38         {
39             std::throw_with_nested(
40                 std::logic_error{"Unable to parse config file"});
41         }
42     }
43     catch (const std::exception& e)
44     {
45         std::vector<std::string> messages = exception_utils::getMessages(e);
46         EXPECT_EQ(messages.size(), 2);
47         EXPECT_EQ(messages[0], "JSON element is not an array");
48         EXPECT_EQ(messages[1], "Unable to parse config file");
49     }
50 }
51 
52 TEST(ExceptionUtilsTests, Log)
53 {
54     try
55     {
56         try
57         {
58             throw std::invalid_argument{"JSON element is not an array"};
59         }
60         catch (...)
61         {
62             std::throw_with_nested(
63                 std::logic_error{"Unable to parse config file"});
64         }
65     }
66     catch (const std::exception& e)
67     {
68         journal::clear();
69         exception_utils::log(e);
70         const std::vector<std::string>& messages = journal::getErrMessages();
71         EXPECT_EQ(messages.size(), 2);
72         EXPECT_EQ(messages[0], "JSON element is not an array");
73         EXPECT_EQ(messages[1], "Unable to parse config file");
74     }
75 }
76 
77 // Test for getMessages() function in the internal namespace
78 TEST(ExceptionUtilsTests, GetMessagesInternal)
79 {
80     // Test where exception is not nested
81     {
82         std::invalid_argument e{"JSON element is not an array"};
83         std::vector<std::string> messages{};
84         exception_utils::internal::getMessages(e, messages);
85         EXPECT_EQ(messages.size(), 1);
86         EXPECT_EQ(messages[0], "JSON element is not an array");
87     }
88 
89     // Test where exception is nested
90     try
91     {
92         try
93         {
94             try
95             {
96                 throw std::invalid_argument{"JSON element is not an array"};
97             }
98             catch (...)
99             {
100                 std::throw_with_nested(
101                     std::logic_error{"Unable to parse config file"});
102             }
103         }
104         catch (...)
105         {
106             std::throw_with_nested(
107                 std::runtime_error{"Unable to configure regulators"});
108         }
109     }
110     catch (const std::exception& e)
111     {
112         std::vector<std::string> messages{};
113         exception_utils::internal::getMessages(e, messages);
114         EXPECT_EQ(messages.size(), 3);
115         EXPECT_EQ(messages[0], "JSON element is not an array");
116         EXPECT_EQ(messages[1], "Unable to parse config file");
117         EXPECT_EQ(messages[2], "Unable to configure regulators");
118     }
119 
120     // Test where nested exception is not a child of std::exception
121     try
122     {
123         try
124         {
125             try
126             {
127                 throw "JSON element is not an array";
128             }
129             catch (...)
130             {
131                 std::throw_with_nested(
132                     std::logic_error{"Unable to parse config file"});
133             }
134         }
135         catch (...)
136         {
137             std::throw_with_nested(
138                 std::runtime_error{"Unable to configure regulators"});
139         }
140     }
141     catch (const std::exception& e)
142     {
143         std::vector<std::string> messages{};
144         exception_utils::internal::getMessages(e, messages);
145         EXPECT_EQ(messages.size(), 2);
146         EXPECT_EQ(messages[0], "Unable to parse config file");
147         EXPECT_EQ(messages[1], "Unable to configure regulators");
148     }
149 }
150