naturalLogarithmPlusOne test

src/test/test_funktionen.c

@@ -190,4 +190,11 @@ void test_logarithmPlusOne(void) {
     TEST_ASSERT_EQUAL_FLOAT(2.0, result);
     // Add more test cases for different inputs and expected outputs
 }
+
+void test_naturalLogarithmPlusOne(void) {
+    float result = naturalLogarithmPlusOne(10.0);
+    TEST_ASSERT_EQUAL_FLOAT(3.302585, result);
+// Add more test cases for different inputs and expected outputs
+
+}
 #endif