1 files changed, 57 insertions, 0 deletions
diff --git a/tests/logger.cpp b/tests/logger.cpp
new file mode 100644
index 0000000..1d59a22
--- /dev/null
+++ b/tests/logger.cpp
@@ -0,0 +1,57 @@
+#include "catch.hpp"
+
+#include <logger/logger.hpp>
+#include <config/config.hpp>
+
+#include "io_tester.hpp"
+#include <iostream>
+
+using namespace std::string_literals;
+
+TEST_CASE("Basic logging")
+{
+#ifdef SYSTEMD_FOUND
+  const std::string debug_header = "<7>";
+  const std::string error_header = "<3>";
+#else
+  const std::string debug_header = "[DEBUG]: ";
+  const std::string error_header = "[ERROR]: ";
+#endif
+  Logger::instance().reset();
+  GIVEN("A logger with log_level 0")
+    {
+      Config::set("log_level", "0");
+      WHEN("we log some debug text")
+        {
+          IoTester<std::ostream> out(std::cout);
+          log_debug("deb", "ug");
+          THEN("debug logs are written")
+            CHECK(out.str() == debug_header + "tests/logger.cpp:" + std::to_string(__LINE__ - 2) + ":\tdebug\n");
+        }
+      WHEN("we log some errors")
+        {
+          IoTester<std::ostream> out(std::cout);
+          log_error("err", 12, "or");
+          THEN("error logs are written")
+            CHECK(out.str() == error_header + "tests/logger.cpp:" + std::to_string(__LINE__ - 2) + ":\terr12or\n");
+        }
+    }
+  GIVEN("A logger with log_level 3")
+    {
+      Config::set("log_level", "3");
+      WHEN("we log some debug text")
+        {
+          IoTester<std::ostream> out(std::cout);
+          log_debug(123, "debug");
+          THEN("nothing is written")
+            CHECK(out.str().empty());
+        }
+      WHEN("we log some errors")
+        {
+          IoTester<std::ostream> out(std::cout);
+          log_error(123, " errors");
+          THEN("error logs are still written")
+            CHECK(out.str() == error_header + "tests/logger.cpp:" + std::to_string(__LINE__ - 2) + ":\t123 errors\n");
+        }
+    }
+}