const assert = require ( 'assert' ) ; suite ( "Extension Tests" , ( ) => { test ( "Something 1" , ( ) => { assert . equal ( - 1 , [ 1 , 2 , 3 ] . indexOf ( 5 ) ) ; assert . equal ( - 1 , [ 1 , 2 , 3 ] . indexOf ( 0 ) ) ; } ) ; } ) ;