fixed error when EEG.icaact has type single and added relevant test

Author: lucapton

ICL_feature_extractor.m

@@ -11,10 +11,11 @@
 % check for ica
 assert(isfield(EEG, 'icawinv'), 'You must have an ICA decomposition to use ICLabel')
 
-% calculate ica activations if missing
+% calculate ica activations if missing and cast to double
 if isempty(EEG.icaact)
     EEG.icaact = eeg_getica(EEG);
 end
+EEG.icaact = double(EEG.icaact);
 
 % check ica is real
 assert(isreal(EEG.icaact), 'Your ICA decomposition must be real to use ICLabel')

run_tests.m

@@ -35,9 +35,11 @@ function run_tests()
         EEG = pop_epoch(EEG, {'square'}, [-1 1]); 
     end
 
-    %% test complete ICA
+    %% test complete ICA with data as singles
 
     EEG_temp = setup(EEG, icasphere, icaweights, 1:32);
+    EEG_temp.data = single(EEG_temp.data);
+    EEG_temp.icaact = single(EEG_temp.icaact);
 
     test_iclabel(EEG_temp)