# IF
# ==
var a = 0

if true
    a = 1
end

assert_eq (1, a)

if false
    a = 2
end

assert_eq (1, a)

# IF THEN ELSE
# ============

var b = 0

b = 0

if true
    b = 1
else if true
    b = 2
else if true
    b = 3
else
    b = 4
end

assert_eq (1, b)


b = 0

if false
    b = 1
else if true
    b = 2
else if true
    b = 3
else
    b = 4
end

assert_eq (2, b)

b = 0

if false
    b = 1
else if false
    b = 2
else if true
    b = 3
else
    b = 4
end

assert_eq (3, b)

b = 0

if false
    b = 1
else if false
    b = 2
else if false
    b = 3
else
    b = 4
end

assert_eq (4, b)