1 files changed, 65 insertions, 0 deletions
diff --git a/tests/logger.cc b/tests/logger.cc
new file mode 100644
index 0000000..18e4fab
--- /dev/null
+++ b/tests/logger.cc
@@ -0,0 +1,65 @@
+#include "logger.h"
+#include <catch2/catch_test_macros.hpp>
+#include <iostream>
+#include <regex>
+#include <sstream>
+
+TEST_CASE("Logger logs higher log level")
+{
+	std::streambuf *coutBuffer = std::cout.rdbuf();
+	std::ostringstream oss;
+	std::cout.rdbuf(oss.rdbuf());
+
+	Logger logger("");
+	logger.setLevel(INFO);
+
+	logger.log(ERROR, "foo bar baz qux");
+
+	std::cout.rdbuf(coutBuffer);
+
+	std::string actual = oss.str();
+	std::regex expected(
+		"\\[\\d{4}-\\d{2}-\\d{2} \\d{2}:\\d{2}:\\d{2}\\] ERROR: "
+		"foo bar baz qux\\n");
+
+	REQUIRE(std::regex_match(actual, expected));
+}
+
+TEST_CASE("Logger logs equal log level")
+{
+	std::streambuf *coutBuffer = std::cout.rdbuf();
+	std::ostringstream oss;
+	std::cout.rdbuf(oss.rdbuf());
+
+	Logger logger("");
+	logger.setLevel(INFO);
+
+	logger.log(INFO, "foo bar baz qux");
+
+	std::cout.rdbuf(coutBuffer);
+
+	std::string actual = oss.str();
+	std::regex expected("\\[\\d{4}-\\d{2}-\\d{2} \\d{2}:\\d{2}:\\d{2}\\] INFO: "
+						"foo bar baz qux\\n");
+
+	REQUIRE(std::regex_match(actual, expected));
+}
+
+TEST_CASE("Logger ignores lower log level")
+{
+	std::streambuf *coutBuffer = std::cout.rdbuf();
+	std::ostringstream oss;
+	std::cout.rdbuf(oss.rdbuf());
+
+	Logger logger("");
+	logger.setLevel(INFO);
+
+	logger.log(DEBUG, "foo bar baz qux");
+
+	std::cout.rdbuf(coutBuffer);
+
+	std::string actual = oss.str();
+	std::string expected("");
+
+	REQUIRE(actual == expected);
+}