Test Random Number Generation

Author: mw-hrastega

TestRand.m

@@ -0,0 +1,54 @@
+classdef TestRand < matlab.unittest.TestCase
+    properties (ClassSetupParameter)
+        generator = {'twister','combRecursive','multFibonacci'};
+    end
+    
+    properties (MethodSetupParameter)
+        seed = {0, 123};
+    end
+    
+    properties (TestParameter)
+        dim1 = struct('small', 1,'medium', 2, 'large', 3);
+        dim2 = struct('small', 2,'medium', 3, 'large', 4);
+        dim3 = struct('small', 3,'medium', 4, 'large', 5);
+        type = {'single','double'};
+    end
+    
+    methods (TestClassSetup)
+        function ClassSetup(testCase, generator)
+            orig = rng;
+            testCase.addTeardown(@rng, orig)
+            rng(0, generator)
+        end
+    end
+    
+    methods (TestMethodSetup)
+        function MethodSetup(testCase, seed)
+            orig = rng;
+            testCase.addTeardown(@rng, orig)
+            rng(seed)
+        end
+    end
+    
+    methods (Test, ParameterCombination='sequential')
+        function testSize(testCase,dim1,dim2,dim3)
+            testCase.verifySize(rand(dim1,dim2,dim3),[dim1 dim2 dim3])
+        end 
+    end
+    
+    methods (Test, ParameterCombination='pairwise')
+        function testRepeatable(testCase,dim1,dim2,dim3)
+            state = rng;
+            firstRun = rand(dim1,dim2,dim3);
+            rng(state)
+            secondRun = rand(dim1,dim2,dim3);
+            testCase.verifyEqual(firstRun,secondRun);
+        end
+    end
+    
+    methods (Test)
+        function testClass(testCase,dim1,dim2,type)
+            testCase.verifyClass(rand(dim1,dim2,type), type)
+        end
+    end
+end