add tests for copy atlas function

Author: Remi-Gau

tests/test_copyAtlasToSpmDir.m

@@ -0,0 +1,22 @@
+function test_suite = test_copyAtlasToSpmDir %#ok<*STOUT>
+  % (C) Copyright 2022 CPP ROI developers
+  try % assignment of 'localfunctions' is necessary in Matlab >= 2016
+    test_functions = localfunctions(); %#ok<*NASGU>
+  catch % no problem; early Matlab versions can use initTestSuite fine
+  end
+  initTestSuite;
+end
+
+function test_copyAtlasToSpmDir_basic()
+
+  copyAtlasToSpmDir('AAL', 'verbose', false);
+
+  spmAtlasDir = fullfile(spm('dir'), 'atlas');
+
+  targetAtlasImage = fullfile(spmAtlasDir, 'AAL3v1_1mm.nii');
+  targetAtlasXml = fullfile(spmAtlasDir, 'AAL3v1_1mm.xml');
+
+  assertEqual(exist(targetAtlasImage, 'file'), 2);
+  assertEqual(exist(targetAtlasXml, 'file'), 2);
+
+end