Implement getAngleType and add tests

Author: eyob-tech

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

@@ -1,37 +1,55 @@
 // Implement a function getAngleType
 //
-// When given an angle in degrees, it should return a string indicating the type of angle:
+// When given an angle in degrees, it should return a string:
 // - "Acute angle" for angles greater than 0° and less than 90°
 // - "Right angle" for exactly 90°
 // - "Obtuse angle" for angles greater than 90° and less than 180°
 // - "Straight angle" for exactly 180°
 // - "Reflex angle" for angles greater than 180° and less than 360°
-// - "Invalid angle" for angles outside the valid range.
+// - "Invalid angle" for angles outside the valid range
 
-// Assumption: The parameter is a valid number. (You do not need to handle non-numeric inputs.)
+// Assumption: The parameter is a valid number. (You do not need to check this.)
 
 // Acceptance criteria:
-// After you have implemented the function, write tests to cover all the cases, and
+// After you have implemented the function, write tests to cover all cases, including boundary values, and
 // execute the code to ensure all tests pass.
 
 function getAngleType(angle) {
-  // TODO: Implement this function
+  if (angle > 0 && angle < 90) {
+    return "Acute angle";
+  } else if (angle === 90) {
+    return "Right angle";
+  } else if (angle > 90 && angle < 180) {
+    return "Obtuse angle";
+  } else if (angle === 180) {
+    return "Straight angle";
+  } else if (angle > 180 && angle < 360) {
+    return "Reflex angle";
+  } else {
+    return "Invalid angle";
+  }
 }
 
-// The line below allows us to load the getAngleType function into tests in other files.
-// This will be useful in the "rewrite tests with jest" step.
+// The line below allows us to load the getAngleType function into other files
+// This will be useful in the "rewrite tests with jest" step later
 module.exports = getAngleType;
 
-// This helper function is written to make our assertions easier to read.
-// If the actual output matches the target output, the test will pass
+// This helper function is written to make our assertions easier to read
+// If the actual output matches the target output, the test passes
 function assertEquals(actualOutput, targetOutput) {
   console.assert(
     actualOutput === targetOutput,
     `Expected ${actualOutput} to equal ${targetOutput}`
   );
 }
 
-// TODO: Write tests to cover all cases, including boundary and invalid cases.
+// TODO: Write tests to cover all cases, including boundary values
 // Example: Identify Right Angles
 const right = getAngleType(90);
 assertEquals(right, "Right angle");
+const acute = getAngleType(45);
+assertEquals(acute, "Acute angle");
+
+const invalid = getAngleType(-10);
+assertEquals(invalid, "Invalid angle");
+

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

@@ -6,15 +6,42 @@ const getAngleType = require("../implement/1-get-angle-type");
 // including boundary and invalid cases.
 
 // Case 1: Acute angles
-test(`should return "Acute angle" when (0 < angle < 90)`, () => {
+test("should return \"Acute angle\" when (0 < angle < 90)", () => {
   // Test various acute angles, including boundary cases
   expect(getAngleType(1)).toEqual("Acute angle");
   expect(getAngleType(45)).toEqual("Acute angle");
   expect(getAngleType(89)).toEqual("Acute angle");
 });
 
 // Case 2: Right angle
+test("should return \"Right angle\" when angle is 90", () => {
+  expect(getAngleType(90)).toEqual("Right angle");
+});
+
 // Case 3: Obtuse angles
+test("should return \"Obtuse angle\" when (90 < angle < 180)", () => {
+  expect(getAngleType(91)).toEqual("Obtuse angle");
+  expect(getAngleType(135)).toEqual("Obtuse angle");
+  expect(getAngleType(179)).toEqual("Obtuse angle");
+});
+
 // Case 4: Straight angle
+test("should return \"Straight angle\" when angle is 180", () => {
+  expect(getAngleType(180)).toEqual("Straight angle");
+});
+
 // Case 5: Reflex angles
+test("should return \"Reflex angle\" when (180 < angle < 360)", () => {
+  expect(getAngleType(181)).toEqual("Reflex angle");
+  expect(getAngleType(270)).toEqual("Reflex angle");
+  expect(getAngleType(359)).toEqual("Reflex angle");
+});
+
 // Case 6: Invalid angles
+test("should return \"Invalid angle\" for angles outside the valid range", () => {
+  expect(getAngleType(0)).toEqual("Invalid angle");
+  expect(getAngleType(-10)).toEqual("Invalid angle");
+  expect(getAngleType(360)).toEqual("Invalid angle");
+  expect(getAngleType(400)).toEqual("Invalid angle");
+});
+