added test for converting longer binary string of 1s to decimal

test/conversionOfNumbers/test_conversionOfNumbers.c

@@ -91,3 +91,15 @@ void test_convertBinaryStr11ToInt3(){
     //assert
     TEST_ASSERT_EQUAL_UINT(expected, result);
 }
+
+void test_convertBinaryStr1111ToInt15(){
+    //arrange
+    unsigned int result;
+    unsigned int expected = 15;
+
+    //act
+    result = convertBinaryStrToInt("1111");
+
+    //assert
+    TEST_ASSERT_EQUAL_UINT(expected, result);
+}