first pass at adding logging framework

external/spdlog/tests/test_file_logging.cpp

@@ -0,0 +1,98 @@
+/*
+ * This content is released under the MIT License as specified in https://raw.githubusercontent.com/gabime/spdlog/master/LICENSE
+ */
+#include "includes.h"
+
+TEST_CASE("simple_file_logger", "[simple_logger]]")
+{
+    prepare_logdir();
+    std::string filename = "test_logs/simple_log";
+
+    auto logger = spdlog::create<spdlog::sinks::basic_file_sink_mt>("logger", filename);
+    logger->set_pattern("%v");
+
+    logger->info("Test message {}", 1);
+    logger->info("Test message {}", 2);
+
+    logger->flush();
+    require_message_count(filename, 2);
+    using spdlog::details::os::default_eol;
+    REQUIRE(file_contents(filename) == fmt::format("Test message 1{}Test message 2{}", default_eol, default_eol));
+}
+
+TEST_CASE("flush_on", "[flush_on]]")
+{
+    prepare_logdir();
+    std::string filename = "test_logs/simple_log";
+
+    auto logger = spdlog::create<spdlog::sinks::basic_file_sink_mt>("logger", filename);
+    logger->set_pattern("%v");
+    logger->set_level(spdlog::level::trace);
+    logger->flush_on(spdlog::level::info);
+    logger->trace("Should not be flushed");
+    REQUIRE(count_lines(filename) == 0);
+
+    logger->info("Test message {}", 1);
+    logger->info("Test message {}", 2);
+
+    require_message_count(filename, 3);
+    using spdlog::details::os::default_eol;
+    REQUIRE(file_contents(filename) ==
+            fmt::format("Should not be flushed{}Test message 1{}Test message 2{}", default_eol, default_eol, default_eol));
+}
+
+TEST_CASE("rotating_file_logger1", "[rotating_logger]]")
+{
+    prepare_logdir();
+    size_t max_size = 1024 * 10;
+    std::string basename = "test_logs/rotating_log";
+    auto logger = spdlog::rotating_logger_mt("logger", basename, max_size, 0);
+
+    for (int i = 0; i < 10; ++i)
+    {
+        logger->info("Test message {}", i);
+    }
+
+    logger->flush();
+    require_message_count(basename, 10);
+}
+
+TEST_CASE("rotating_file_logger2", "[rotating_logger]]")
+{
+    prepare_logdir();
+    size_t max_size = 1024 * 10;
+    std::string basename = "test_logs/rotating_log";
+
+    {
+        // make an initial logger to create the first output file
+        auto logger = spdlog::rotating_logger_mt("logger", basename, max_size, 2, true);
+        for (int i = 0; i < 10; ++i)
+        {
+            logger->info("Test message {}", i);
+        }
+        // drop causes the logger destructor to be called, which is required so the
+        // next logger can rename the first output file.
+        spdlog::drop(logger->name());
+    }
+
+    auto logger = spdlog::rotating_logger_mt("logger", basename, max_size, 2, true);
+    for (int i = 0; i < 10; ++i)
+    {
+        logger->info("Test message {}", i);
+    }
+
+    logger->flush();
+
+    require_message_count(basename, 10);
+
+    for (int i = 0; i < 1000; i++)
+    {
+
+        logger->info("Test message {}", i);
+    }
+
+    logger->flush();
+    REQUIRE(get_filesize(basename) <= max_size);
+    auto filename1 = basename + ".1";
+    REQUIRE(get_filesize(filename1) <= max_size);
+}