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

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

if false then unreachable()
elif true then variable = null
else unreachable() end
assert(is_null(variable), 'Elif statement failed.')

if false then unreachable()
elif false then unreachable()
elif false then unreachable()
else variable = "changed" end
assert(variable == "changed", 'Else statement failed.')

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

print("-------------------")
print(" IF TESTS DONE     ")
print("-------------------")