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func test():
# The assertions below should all evaluate to `true` for this test to pass.
assert(true)
assert(not false)
assert(500)
assert(not 0)
assert(500.5)
assert(not 0.0)
assert("non-empty string")
assert(["non-empty array"])
assert({"non-empty": "dictionary"})
assert(Vector2(1, 0))
assert(Vector2i(-1, -1))
assert(Vector3(0, 0, 0.0001))
assert(Vector3i(0, 0, 10000))
# Zero position is `true` only if the Rect2's size is non-zero.
assert(Rect2(0, 0, 0, 1))
# Zero size is `true` only if the position is non-zero.
assert(Rect2(1, 1, 0, 0))
# Zero position is `true` only if the Rect2's size is non-zero.
assert(Rect2i(0, 0, 0, 1))
# Zero size is `true` only if the position is non-zero.
assert(Rect2i(1, 1, 0, 0))
# A fully black color is only truthy if its alpha component is not equal to `1`.
assert(Color(0, 0, 0, 0.5))
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