2 files changed, 69 insertions, 2 deletions

diff --git a/src/logging/logging.c b/src/logging/logging.c
index db4611a..0dcf47b 100644
--- a/src/logging/logging.c
+++ b/src/logging/logging.c
@@ -9,12 +9,37 @@ void honey_set_log_level(int level)
 	_honey_log_level = level;
 }
 
+int log_fatal(lua_State *L)
+{
+    //validate arguments
+    int count = lua_gettop(L);
+    if (count == 0) {
+        hs_throw_error(L, "no arguments provided");
+    }
+    if (!lua_isstring(L, 1)) {
+        hs_throw_error(L, "first argument must be a string");
+    }
+    lua_getglobal(L, "string");
+    if (lua_isnil(L, -1)) hs_throw_error(L, "'string' table is nil!");
+    lua_getfield(L, -1, "format"); //pushed string.format (function) to the lua stack
+    for (int i = 1; i <= count; i++) {
+        lua_pushvalue(L, i);
+    }
+    lua_call(L, count, 1);
+    const char *str = lua_tostring(L, -1); //getting result into a string
+    honey_log(HONEY_FATAL, "[FATAL] %s\n", str);
+    lua_pop(L, 2); //cleaned up stack
+    return 0;
+}
 
 void honey_log(int level, const char *fmt, ...) {
+  
 	if (level > _honey_log_level) return;
-
+	
 	va_list args;
 	va_start(args, fmt);
 	vfprintf(stderr, fmt, args);
 	va_end(args);
 }
+
+  
diff --git a/src/logging/logging.test.c b/src/logging/logging.test.c
index 7e53074..01c8b20 100644
--- a/src/logging/logging.test.c
+++ b/src/logging/logging.test.c
@@ -1,7 +1,10 @@
 #include <string.h>
 #include <stdarg.h>
 #include <stdio.h>
-
+#include <lua.h>
+#include <lualib.h>
+#include <lauxlib.h>
+#include <honeysuckle.h>
 #include "test/honey-test.h"
 
 /* ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
@@ -70,11 +73,14 @@ void clean_mock(lily_mock_t **m)
 
 void level_fatal_log_fatal_succeeds();
 void level_neg_log_fatal_fails();
+void test_honey_log_fatal();
+void test_honey_log_fatal_fail();
 
 void suite_logging()
 {
 	lily_run_test(level_neg_log_fatal_fails);
 	lily_run_test(level_fatal_log_fatal_succeeds);
+    lily_run_test(test_honey_log_fatal);
 
 	CLEAN_MOCK(mock_vfprintf);
 }
@@ -117,3 +123,39 @@ void level_neg_log_fatal_fails()
 	honey_log_fatal("some message");
 	lily_assert_int_equal(mock_vfprintf_data->n_calls, 0);
 }
+
+//error logging test functions
+void test_honey_log_fatal()
+{
+    USE_MOCK(mock_vfprintf);    
+    //first test (with no error surpressions)
+    lua_State *L = luaL_newstate();
+    luaL_openlibs(L);
+    lua_pushcfunction(L, log_fatal); //function is on the stack
+    lua_pushstring(L, "fatal error test");
+    int result = hs_call(L, 1, 0);
+    if (result != 0) {
+        const char *error = lua_tostring(L, -1);
+        fprintf(stderr, "%s", error);
+    }
+    lily_assert_int_equal(result, 0); //testing that error function got string pushed to it
+    lily_assert_int_equal(mock_vfprintf_data->n_calls, 1); //testing that error printing function works
+}
+
+void test_honey_log_fatal_fail()
+{
+    USE_MOCK(mock_vfprintf);
+    honey_set_log_level(-1);
+    lua_State *L = luaL_newstate();
+    luaL_openlibs(L);
+    lua_pushcfunction(L, log_fatal);
+    lua_pushstring(L, "fatal error test");
+    int result = hs_call(L, 1, 0);
+    if (result != 0) {
+        const char *error = lua_tostring(L, -1);
+        fprintf(stderr, "%s", error);
+    }
+    lily_assert_int_equal(result, 0);
+    lily_assert_int_equal(mock_vfprintf_data->n_calls, 0);
+}
+