Replace runTestCase with assert helpers [test/built-ins/Array/prototype/indexOf]

test/built-ins/Array/prototype/indexOf/15.4.4.14-0-1.js

test/built-ins/Array/prototype/indexOf/15.4.4.14-0-2.js

test/built-ins/Array/prototype/indexOf/15.4.4.14-1-11.js

test/built-ins/Array/prototype/indexOf/15.4.4.14-1-12.js

test/built-ins/Array/prototype/indexOf/15.4.4.14-1-14.js

test/built-ins/Array/prototype/indexOf/15.4.4.14-1-15.js

test/built-ins/Array/prototype/indexOf/15.4.4.14-1-4.js

test/built-ins/Array/prototype/indexOf/15.4.4.14-1-6.js

test/built-ins/Array/prototype/indexOf/15.4.4.14-1-8.js

test/built-ins/Array/prototype/indexOf/15.4.4.14-1-9.js

test/built-ins/Array/prototype/indexOf/15.4.4.14-10-2.js

test/built-ins/Array/prototype/indexOf/15.4.4.14-2-1.js

test/built-ins/Array/prototype/indexOf/15.4.4.14-2-10.js

test/built-ins/Array/prototype/indexOf/15.4.4.14-2-11.js

test/built-ins/Array/prototype/indexOf/15.4.4.14-2-13.js

test/built-ins/Array/prototype/indexOf/15.4.4.14-2-14.js

test/built-ins/Array/prototype/indexOf/15.4.4.14-2-17.js

test/built-ins/Array/prototype/indexOf/15.4.4.14-2-19.js

test/built-ins/Array/prototype/indexOf/15.4.4.14-2-3.js

test/built-ins/Array/prototype/indexOf/15.4.4.14-2-5.js