make sure the stats package is loaded for testing

Author: Remi-Gau

src/isOctave.m

@@ -0,0 +1,10 @@
+function retval = isOctave
+    % Return: true if the environment is Octave.
+    persistent cacheval   % speeds up repeated calls
+
+    if isempty (cacheval)
+        cacheval = (exist ('OCTAVE_VERSION', 'builtin') > 0);
+    end
+
+    retval = cacheval;
+end

tests/test_setTargetPositionInSequence.m

@@ -1,4 +1,9 @@
 function test_suite = test_setTargetPositionInSequence %#ok<*STOUT>
+    
+    if isOctave()
+        pkg('load','statistics');
+    end
+    
     try % assignment of 'localfunctions' is necessary in Matlab >= 2016
         test_functions = localfunctions(); %#ok<*NASGU>
     catch % no problem; early Matlab versions can use initTestSuite fine