Add some tests for logging #44

Tests/Log/FakeLogTarget.h

@@ -0,0 +1,40 @@
+/*
+ *   Copyright (C) 2021-2024 by Geoffrey Merck F4FXL / KC3FRA
+ *
+ *   This program 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 of the License, or
+ *   (at your option) any later version.
+ *
+ *   This program 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 this program; if not, write to the Free Software
+ *   Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+
+#include <vector>
+#include <iostream>
+
+#include "LogTarget.h"
+
+class CFakeLogTarget : public CLogTarget
+{
+public:
+    CFakeLogTarget(LOG_SEVERITY logLevel) :
+    CLogTarget(logLevel)
+    {
+
+    }
+
+    virtual void printLogInt(const std::string& msg)
+    {
+        m_messages.push_back(msg);
+        std::cout << msg;
+    }
+
+    std::vector<std::string> m_messages;
+};

Tests/Log/logError.cpp

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+/*
+ *   Copyright (C) 2021-2024 by Geoffrey Merck F4FXL / KC3FRA
+ *
+ *   This program 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 of the License, or
+ *   (at your option) any later version.
+ *
+ *   This program 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 this program; if not, write to the Free Software
+ *   Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+
+#include <gtest/gtest.h>
+#include <gmock/gmock.h>
+
+#include "Log.h"
+#include "LogSeverity.h"
+#include "FakeLogTarget.h"
+
+using ::testing::EndsWith;
+
+namespace LogErrorTests
+{
+    class Log_logError: public ::testing::Test {
+        protected:
+            CFakeLogTarget * m_logTarget;
+
+        void SetUp() override
+        {
+            m_logTarget = new CFakeLogTarget(LOG_ERROR);
+            CLog::addTarget((CLogTarget *)m_logTarget);
+        }
+
+        void TearDown() override
+        {
+            CLog::finalise();
+        }
+    };
+
+    TEST_F(Log_logError, OneMessage) {
+        CLog::logError("One Message");
+
+        EXPECT_EQ(1, m_logTarget->m_messages.size()) << "There should be  one message in the log.";
+        EXPECT_THAT(m_logTarget->m_messages[0].c_str(), EndsWith("[ERROR  ] One Message\n"));
+    }
+
+    TEST_F(Log_logError, WrongLevel) {
+        CLog::logDebug("One Message");
+
+        EXPECT_EQ(0, m_logTarget->m_messages.size()) << "There should be no message in the log.";
+    }
+
+    TEST_F(Log_logError, TwoMessage) {
+        CLog::logError("One Message");
+        CLog::logError("Two Message");
+
+        EXPECT_EQ(2, m_logTarget->m_messages.size()) << "There should be exactly two message in the log.";
+        EXPECT_THAT(m_logTarget->m_messages[0].c_str(), EndsWith("[ERROR  ] One Message\n"));
+        EXPECT_THAT(m_logTarget->m_messages[1].c_str(), EndsWith("[ERROR  ] Two Message\n"));
+    }
+
+    TEST_F(Log_logError, ThreeIdenticalMessage) {
+        CLog::logError("One Message");
+        CLog::logError("One Message");
+        CLog::logError("One Message");
+
+        EXPECT_EQ(1, m_logTarget->m_messages.size()) << "There should be one message in the log.";
+        EXPECT_THAT(m_logTarget->m_messages[0].c_str(), EndsWith("[ERROR  ] One Message\n"));
+    }
+
+    TEST_F(Log_logError, ThreeIdenticalMessageOneDifferent) {
+        CLog::logError("One Message");
+        CLog::logError("One Message");
+        CLog::logError("One Message");        
+        CLog::logError("One Message");
+        CLog::logError("One Message");       
+        CLog::logError("One Message");
+        CLog::logError("One Message");        
+        CLog::logError("One Message");
+        CLog::logError("One Message");
+        CLog::logError("Another Message");
+
+        EXPECT_EQ(3, m_logTarget->m_messages.size()) << "There should be two message in the log.";
+        EXPECT_THAT(m_logTarget->m_messages[0].c_str(), EndsWith("[ERROR  ] One Message\n"));
+        EXPECT_THAT(m_logTarget->m_messages[1].c_str(), EndsWith("[ERROR  ] Previous message repeated 8 times\n"));
+        EXPECT_THAT(m_logTarget->m_messages[2].c_str(), EndsWith("[ERROR  ] Another Message\n"));
+    }
+}