diff --git a/.gitignore b/.gitignore
index 3dec058..1f92494 100644
--- a/.gitignore
+++ b/.gitignore
@@ -5,3 +5,4 @@
 .vscode/
 CMakeFiles/
 *zip
+check_assignment*c
diff --git a/hw1/Makefile b/hw1/Makefile
index 9951937..7217093 100644
--- a/hw1/Makefile
+++ b/hw1/Makefile
@@ -1,2 +1,5 @@
-test_assignment1: test_assignment1.c assignment1.c
-	gcc -Wall -std=c99 -o test_assignment1 test_assignment1.c assignment1.c
+test_assignment1: test_assignment1.c assignment1.c check_assignment1.c
+	gcc -Wall -std=c99 -o test_assignment1 test_assignment1.c assignment1.c check_assignment1.c -lcheck
+
+check_assignment1.c: assignment1.ts
+	checkmk assignment1.ts > check_assignment1.c
diff --git a/hw1/assignment1.c b/hw1/assignment1.c
index d0d6865..d5a463a 100644
--- a/hw1/assignment1.c
+++ b/hw1/assignment1.c
@@ -5,10 +5,10 @@
 #include <stdbool.h>
 
 /**
- * @brief count even numbers between x and y, inclusive  
- * @param x starting number 
+ * @brief count even numbers between x and y, inclusive
+ * @param x starting number
  * @param y ending number
- * @return a long with the amount of even numbers between x and y, inclusive 
+ * @return a long with the amount of even numbers between x and y, inclusive
  */
 long count_even(long x, long y)
 {
diff --git a/hw1/assignment1.ts b/hw1/assignment1.ts
new file mode 100644
index 0000000..7160650
--- /dev/null
+++ b/hw1/assignment1.ts
@@ -0,0 +1,23 @@
+#include <stdio.h>
+#include "assignment1.h"
+
+#suite HW 1
+
+#tcase Count even numbers
+
+static const int samples[4][3] = {
+    {1, 4, 2},
+    {10, 3, 4},
+    {7, -8, 8},
+    {-11, -11, 0},
+};
+
+#test-loop(0, 4) count_even_table
+    int start = samples[_i][0];
+    int end = samples[_i][1];
+    int expected = samples[_i][2];
+    ck_assert_int_eq(count_even(start, end), expected);
+
+#test count_even_4
+    ck_assert_int_eq(count_even(-11, -11), 0);
+
diff --git a/hw1/test_assignment1.c b/hw1/test_assignment1.c
index a739ef3..b3edd49 100644
--- a/hw1/test_assignment1.c
+++ b/hw1/test_assignment1.c
@@ -249,24 +249,23 @@ bool test_q5_3()  {
 // when testing your code, it may be convenient 
 // to comment out some of the test cases
 // and focus only on the one you are working on right now
-int main()  {
-  test_q1_1();
-  test_q1_2();
-  test_q1_3();
-  
-  test_q2_1();
-  test_q2_2();
-  
-  test_q3_1();
-  test_q3_2();
-//
-  test_q4_1();
-  test_q4_2();
-  test_q4_3();
-
-  test_q5_1();
-  test_q5_2();
-  test_q5_3();
-  return 0;
-}
+/* int main()  { */
+/*   test_q1_1(); */
+/*   test_q1_2(); */
+/*   test_q1_3(); */
+
+/*   test_q2_1(); */
+/*   test_q2_2(); */
+
+/*   test_q3_1(); */
+/*   test_q3_2(); */
+
+/*   test_q4_1(); */
+/*   test_q4_2(); */
+/*   test_q4_3(); */
+
+/*   test_q5_1(); */
+/*   test_q5_2(); */
+/*   test_q5_3(); */
+/* } */