add tests and options for other functions

include/spdlog/logger-inl.h

@@ -116,9 +116,9 @@ SPDLOG_INLINE void logger::disable_backtrace()
     tracer_.disable();
 }
 
-SPDLOG_INLINE void logger::dump_backtrace()
+SPDLOG_INLINE void logger::dump_backtrace(bool with_message)
 {
-    dump_backtrace_();
+    dump_backtrace_(with_message);
 }
 
 // flush functions

include/spdlog/logger.h

@@ -329,7 +329,7 @@ public:
     // efficiently store all debug/trace messages in a circular buffer until needed for debugging.
     void enable_backtrace(size_t n_messages);
     void disable_backtrace();
-    void dump_backtrace();
+    void dump_backtrace(bool with_message=true);
 
     // flush functions
     void flush();
@@ -410,7 +410,7 @@ protected:
     void log_it_(const details::log_msg &log_msg, bool log_enabled, bool traceback_enabled);
     virtual void sink_it_(const details::log_msg &msg);
     virtual void flush_();
-    void dump_backtrace_();
+    void dump_backtrace_(bool with_message=true);
     bool should_flush_(const details::log_msg &msg);
 
     // handle errors during logging.

tests/test_backtrace.cpp

@@ -31,6 +31,33 @@ TEST_CASE("bactrace1", "[bactrace]")
     REQUIRE(test_sink->lines()[7] == "****************** Backtrace End ********************");
 }
 
+TEST_CASE("bactrace2", "[bactrace]")
+{
+
+    using spdlog::sinks::test_sink_st;
+    auto test_sink = std::make_shared<test_sink_st>();
+    size_t backtrace_size = 5;
+
+    spdlog::logger logger("test-backtrace", test_sink);
+    logger.set_pattern("%v");
+    logger.enable_backtrace(backtrace_size);
+
+    logger.info("info message");
+    for (int i = 0; i < 100; i++)
+        logger.debug("debug message {}", i);
+
+    REQUIRE(test_sink->lines().size() == 1);
+    REQUIRE(test_sink->lines()[0] == "info message");
+
+    logger.dump_backtrace(false);
+    REQUIRE(test_sink->lines().size() == backtrace_size + 1);
+    REQUIRE(test_sink->lines()[1] == "debug message 95");
+    REQUIRE(test_sink->lines()[2] == "debug message 96");
+    REQUIRE(test_sink->lines()[3] == "debug message 97");
+    REQUIRE(test_sink->lines()[4] == "debug message 98");
+    REQUIRE(test_sink->lines()[5] == "debug message 99");
+}
+
 TEST_CASE("bactrace-empty", "[bactrace]")
 {
     using spdlog::sinks::test_sink_st;