## If statements.
variable = null ## Will be changed by the control flow.
unreachable = function assert(false, 'Unreachable') end

if true then variable = 42 else unreachable() end
assert(variable == 42, 'If statement failed.')

if false then unreachable()
else if true then variable = null
else unreachable() end
assert(variable == null)

if false then unreachable()
else if false then unreachable()
else if false then unreachable()
else variable = "changed" end
assert(variable == "changed")

if false then unreachable()
else if true
  if false
    unreachable()
  else if true
    variable = 123
  else
    unreachable()
  end
end
assert(variable == 123, 'Nested if statement failed.')

## While statements

while true
	variable = 1212
	if true then break end
end
assert(variable == 1212)

while true
	variable = 22
	if true then else if false then end	
	if false
	else if true
		variable += 2300
	end
	variable += 1
	break
end
assert(variable == 2323)

map = { 'a':10, 'b':12, 'c':32 }; sum = 0
for k in map
  sum += map[k]
end
assert(sum == 54)

val = 2
if val == 1 then val = null
else if val == 2 then val = 'foo'
else val = null
end
assert(val == 'foo')

val = 2
if val == 1 then val = null
else
  if val == 2 then val = 'bar'
	end ##< Need an extra end since 'else if' != 'else \n if'.
end
assert(val == 'bar')


# If we got here, that means all test were passed.
print('All TESTS PASSED')