1 files changed, 131 insertions, 0 deletions
diff --git a/src/lib/testutils/log_utils.cc b/src/lib/testutils/log_utils.cc
new file mode 100644
index 0000000..56b6d33
--- /dev/null
+++ b/src/lib/testutils/log_utils.cc
@@ -0,0 +1,131 @@
+// Copyright (C) 2016-2021 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 <testutils/log_utils.h>
+#include <cstdlib>
+#include <iostream>
+
+namespace isc {
+namespace dhcp {
+namespace test {
+
+LogContentTest::LogContentTest()
+    :verbose_(false) {
+    // Get rid of any old files
+    remFile();
+
+    // Set up the logger for use in checking the debug statements.
+    // We send the debug statements to a file which we can
+    // check after the evaluations have completed.  We also
+    // set the log severity and debug levels so that the log
+    // statements are executed.
+    LoggerSpecification spec(getRootLoggerName(),
+                             keaLoggerSeverity(isc::log::DEBUG),
+                             keaLoggerDbglevel(isc::log::MAX_DEBUG_LEVEL));
+    OutputOption option;
+    option.destination = OutputOption::DEST_FILE;
+    option.filename = string(LogContentTest::LOG_FILE);
+    spec.addOutputOption(option);
+    LoggerManager manager;
+    manager.process(spec);
+
+    // Overwrite the verbose_ default is the KEA_LOG_CHECK_VERBOSE
+    // environment variable exists.
+    if (getenv(KEA_LOG_CHECK_VERBOSE)) {
+        verbose_ = true;
+    }
+}
+
+LogContentTest:: ~LogContentTest() {
+    remFile();
+}
+
+bool LogContentTest::checkFile() {
+    ifstream file(LOG_FILE);
+    EXPECT_TRUE(file.is_open());
+    string line, exp_line;
+    int i = 0;
+    bool found = true;
+
+    using namespace std;
+
+    while (getline(file, line) && (i != exp_strings_.size())) {
+        exp_line = exp_strings_[i];
+        if (verbose_) {
+            cout << "Read line  : " << line << endl;
+            cout << "Looking for: " << exp_line << endl;
+        }
+        i++;
+        if (string::npos == line.find(exp_line)) {
+            if (verbose_) {
+                cout << "Verdict    : not found" << endl;
+            }
+            found = false;
+        }
+    }
+
+    file.close();
+
+    if ((i != exp_strings_.size()) || (found == false)) {
+        if (verbose_) {
+            cout << "Final verdict: false" << endl;
+        }
+        return (false);
+    }
+
+    return (true);
+}
+
+size_t LogContentTest::countFile(const string& exp_string) {
+    ifstream file(LOG_FILE);
+    EXPECT_TRUE(file.is_open());
+    string line;
+    size_t cnt = 0;
+
+    using namespace std;
+
+    if (verbose_) {
+        cout << "Looking for:" << exp_string << endl;
+    }
+    while (getline(file, line)) {
+        if (verbose_) {
+            cout << "Read line  :" << line << endl;
+        }
+        if (line.find(exp_string) != string::npos) {
+            ++cnt;
+        }
+    }
+
+    file.close();
+
+    if (verbose_) {
+        cout << "Final count: " << cnt << endl;
+    }
+
+    return (cnt);
+}
+
+void LogContentTest::remFile() {
+    static_cast<void>(remove(LOG_FILE));
+}
+
+void LogContentTest::addString(const string& new_string) {
+    exp_strings_.push_back(new_string);
+}
+
+// Set up the name of the LOG_FILE for use in checking
+// the debug statements.
+// Must not be the same file name used by test shell scripts.
+const char* LogContentTest::LOG_FILE = "logtest.log";
+
+// The environment variable to overwrite the verbose_ default value.
+const char* LogContentTest::KEA_LOG_CHECK_VERBOSE = "KEA_LOG_CHECK_VERBOSE";
+
+} // end of isc::dhcp::test namespace
+} // end of isc::dhcp namespace
+} // end of isc namespace