[test] add unit tests for surfboolean

Author: fangq

Diff for: test/run_iso2mesh_test.m

@@ -225,7 +225,7 @@ function run_iso2mesh_test(tests)
 end
 
 %%
-if (ismember('boolean', tests))
+if (ismember('bool', tests))
     [no1, el1] = meshgrid5(1:2, 1:2, 1:2);
     el1 = volface(el1);
     [no1, el1] = removeisolatednode(no1, el1);