Implement straight angle identification in getAngleType function and add corresponding test case

Author: CatchingKiyoko

Sprint-3/1-implement-and-rewrite-tests/implement/1-get-angle-type.js

@@ -11,6 +11,7 @@ function getAngleType(angle) {
   if (angle === 90) return "Right angle";
   if (angle < 90) return "Acute angle";
   if (angle > 90) && (angle < 180)) return "Obtuse angle";
+  if (angle === 180) return "Straight angle";
    // Run the tests, work out what Case 2 is testing, and implement the required code here.
    // Then keep going for the other cases, one at a time.
 }
@@ -56,6 +57,8 @@ const obtuse = getAngleType(120);
 // When the angle is exactly 180 degrees,
 // Then the function should return "Straight angle"
 // ====> write your test here, and then add a line to pass the test in the function above
+const straight = getAngleType(180);
+assertEquals(straight, "Straight angle");
 
 // Case 5: Identify Reflex Angles:
 // When the angle is greater than 180 degrees and less than 360 degrees,