added test case for function get_settings_car

matlab/tests/test_get_settings_car.m

+% test case for function get_settings_car
+
+%purpose: checks that the get_settings_car function returns a struct with
+%the right fields
+
+%oracle:  the fields of the returned struct are sigma_acc sigma_giro
+%sigma_acc_bias sigma_giro_bias sigma_gps factp
+
+clear all             %clear workspace 
+close all
+cd ..                 %move to functions directory           
+
+%execute function
+settings=get_settings_car();
+
+cd tests              %go back to tests directory
+
+%verify output
+if    ~(isfield(settings, 'sigma_acc') && ...
+        isfield(settings, 'sigma_gyro') && ...
+        isfield(settings, 'sigma_acc_bias') && ...
+        isfield(settings, 'sigma_gyro_bias') && ...
+        isfield(settings, 'sigma_gps') && ...
+        isfield(settings, 'factp'))
+    error('error in function get_settings_car')
+else
+    disp('function get_settings_car ok')
+end
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