EX2 Predict unittests

ex2/test_ex2.m

@@ -6,4 +6,4 @@
 
 %!test test_costfunction_nontrivial()
 
-%  !test test_gradient()
+%!test test_predict()

ex2/test_predict.m

@@ -0,0 +1,23 @@
+function test_predict ()
+
+  X = [0 0;
+       0 1;
+       1 0;
+       1 1];
+
+  % all these should pass  
+  assert(predict([1 1]', X), logical([1 1 1 1]'));
+  assert(predict([0 0]', X), logical([1 1 1 1]'));
+
+  % fail ... according to some math...
+  assert(predict([-1 -1]', X), logical([1 0 0 0]'));
+  assert(predict([-1 0]', X), logical([1 1 0 0]'));
+  assert(predict([0 -1]', X), logical([1 0 1 0]'));
+  assert(predict([-1 -1]', X), logical([1 0 0 0]'));
+
+  % fail or pass ... based on the same math as above (which 
+  % is intentionally not shared)
+  assert(predict([1.1 -1]', X), logical([1 0 1 1]'));
+  assert(predict([-1 1.1]', X), logical([1 1 0 1]'));
+
+endfunction