diff --git a/test/conversionOfNumbers/test_conversionOfNumbers.c b/test/conversionOfNumbers/test_conversionOfNumbers.c
index 114b83a..2a4e777 100644
--- a/test/conversionOfNumbers/test_conversionOfNumbers.c
+++ b/test/conversionOfNumbers/test_conversionOfNumbers.c
@@ -38,4 +38,16 @@ void test_binaryStringLengthOfInput0is1(){
 
     //assert
     TEST_ASSERT_EQUAL_INT(expected, result);
+}
+
+void test_convert10ToBinaryStr(){
+    //arrange
+    char* result;
+    char expected[] = "1010";
+
+    //act
+    result = convertIntToBinaryStr(10);
+
+    //assert
+    TEST_ASSERT_EQUAL_STRING(expected, result);
 }
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