Update test_myfunction.m

test/test_myfunction.m

@@ -1,16 +1,78 @@
 classdef test_myfunction < matlab.unittest.TestCase
-    methods(Test)
-        function testSimple(testCase)
-            % Dummy test for the function myfunction
-            result = myfunction(3);  % Call the function defined below
+    % Test class for myfunction
+    % This test suite demonstrates various aspects of the function's behavior
+
+    properties
+        % Define any test properties here
+        TestPrecision = 1e-10;
+    end
+
+    methods (Test)
+        function testPositiveInteger(testCase)
+            % Test with a positive integer
+            result = myfunction(3);
             expected = 9;
-            testCase.verifyEqual(result, expected);
+            testCase.verifyEqual(result, expected, ...
+                'Failed to square positive integer correctly')
+        end
+
+        function testNegativeInteger(testCase)
+            % Test with a negative integer
+            result = myfunction(-4);
+            expected = 16;
+            testCase.verifyEqual(result, expected, ...
+                'Failed to square negative integer correctly')
+        end
+
+        function testZero(testCase)
+            % Test with zero
+            result = myfunction(0);
+            expected = 0;
+            testCase.verifyEqual(result, expected, ...
+                'Failed to handle zero input correctly')
+        end
+
+        function testDecimal(testCase)
+            % Test with decimal number
+            result = myfunction(1.5);
+            expected = 2.25;
+            testCase.verifyEqual(result, expected, ...
+                'AbsTol', testCase.TestPrecision, ...
+                'Failed to square decimal number correctly')
+        end
+
+        function testLargeNumber(testCase)
+            % Test with a large number
+            result = myfunction(1e3);
+            expected = 1e6;
+            testCase.verifyEqual(result, expected, ...
+                'Failed to handle large numbers correctly')
+        end
+    end
+
+    methods (TestClassSetup)
+        function setupPath(testCase)
+            % Add the directory containing myfunction to the path
+            currentDir = fileparts(mfilename('fullpath'));
+            addpath(currentDir);
         end
     end
 end
 
 % The function to be tested
 function y = myfunction(x)
-    % Simple function that squares the input
+    % MYFUNCTION Squares the input value
+    %   y = MYFUNCTION(x) returns the square of x
+    %
+    % Inputs:
+    %   x - A numeric value
+    %
+    % Outputs:
+    %   y - The square of the input value
+    %
+    % Example:
+    %   y = myfunction(3)
+    %   y = 9
+
     y = x^2;
 end