diff --git a/test/test_convert_ton_to_kg.c b/test/test_convert_ton_to_kg.c
new file mode 100644
index 0000000..9d7ad2c
--- /dev/null
+++ b/test/test_convert_ton_to_kg.c
@@ -0,0 +1,20 @@
+#include "unity.h" // Include the Unity header file
+#include "../src/convert_ton_to_kg.h"
+#include "limits.h"
+// Test setup function
+void setUp(void) {
+    // This function will be called before each test
+}
+
+// Test teardown function
+void tearDown(void) {
+    // This function will be called after each test
+}
+
+// Test case for tons_to_kg function
+void test_tons_to_kg(void) {
+    // Test case
+    double input = 2.5;
+    double expected_output = 2500.0;
+    TEST_ASSERT_EQUAL_DOUBLE(expected_output, tons_to_kg(input));
+}