1describe('decoder', function() 2 3 -- Decode simple function 4 local bytecode = require('bpf.ljbytecode') 5 local f = function (x) return x + 1 end 6 7 it('should decode functions', function() 8 -- Make sure it calls LJ decoder 9 local bc = bytecode.decoder(f) 10 assert.truthy(bc) 11 -- Decode bytecode bytecode to instructions 12 local jutil = require("jit.util") 13 spy.on(jutil, 'funcbc') 14 local pc, op = bc() 15 -- Check bytecode for sanity (starts with ADDVN(x, 1)) 16 assert.equal(pc, 1) 17 assert.equal(op, 'ADDVN') 18 for pc, op in bc do 19 assert.truthy(pc and op) 20 end 21 assert.spy(jutil.funcbc).was.called() 22 end) 23 it('should fail on bad input', function() 24 assert.has_error(function() bytecode.decoder(nil)() end) 25 assert.has_error(function() bytecode.decoder(5)() end) 26 assert.has_error(function() bytecode.decoder('test')() end) 27 end) 28 it('should dump bytecode', function() 29 bytecode.dump(f) 30 end) 31end) 32