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https://github.com/idris-lang/Idris2.git
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112 lines
2.9 KiB
Idris
112 lines
2.9 KiB
Idris
-- Tests to check that casting between integer types works as expected
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--
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-- The tests in `idris2/basic043`, `chez/chez029` and `node/node022` are the
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-- same and should all have the same output.
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--
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-- Widening should not have any effect
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--
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bits8WideningNoEffect : List String
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bits8WideningNoEffect = [
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show $ cast {from = Bits8} {to = Bits16} 123,
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show $ cast {from = Bits8} {to = Bits32} 123,
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show $ cast {from = Bits8} {to = Bits64} 123,
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show $ cast {from = Bits8} {to = Int} 123,
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show $ cast {from = Bits8} {to = Integer} 123
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]
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bits16WideningNoEffect : List String
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bits16WideningNoEffect = [
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show $ cast {from = Bits16} {to = Bits32} 1234,
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show $ cast {from = Bits16} {to = Bits64} 1234,
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show $ cast {from = Bits16} {to = Int} 1234,
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show $ cast {from = Bits16} {to = Integer} 1234
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]
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bits32WideningNoEffect : List String
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bits32WideningNoEffect = [
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show $ cast {from = Bits32} {to = Bits64} 1234567,
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show $ cast {from = Bits32} {to = Int} 1234567,
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show $ cast {from = Bits32} {to = Integer} 1234567
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]
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--
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-- Narrowing
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--
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b8max : Integer
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b8max = 0x100
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b16max : Integer
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b16max = 0x10000
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b32max : Integer
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b32max = 0x100000000
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b64max : Integer
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b64max = 18446744073709551616 -- 0x10000000000000000
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narrowFromInteger : List String
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narrowFromInteger = [
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show $ cast {from = Integer} {to = Bits8} (b8max + 134),
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show $ cast {from = Integer} {to = Bits16} (b16max + 134),
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show $ cast {from = Integer} {to = Bits32} (b32max + 134),
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show $ cast {from = Integer} {to = Bits64} (b64max + 134)
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]
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narrowFromInt : List String
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narrowFromInt = [
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show $ cast {from = Int} {to = Bits8} (cast (b8max + 134)),
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show $ cast {from = Int} {to = Bits16} (cast (b16max + 134)),
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show $ cast {from = Int} {to = Bits32} (cast (b32max + 134)),
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show $ cast {from = Int} {to = Bits64} (cast (b64max + 134))
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]
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narrowFromBits64 : List String
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narrowFromBits64 = [
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show $ cast {from = Bits64} {to = Bits8} (cast (b8max + 134)),
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show $ cast {from = Bits64} {to = Bits16} (cast (b16max + 134)),
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show $ cast {from = Bits64} {to = Bits32} (cast (b32max + 134))
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]
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narrowFromBits32 : List String
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narrowFromBits32 = [
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show $ cast {from = Bits32} {to = Bits8} (cast (b8max + 134)),
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show $ cast {from = Bits32} {to = Bits16} (cast (b16max + 134))
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]
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narrowFromBits16 : List String
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narrowFromBits16 = [
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show $ cast {from = Bits16} {to = Bits8} (cast (b8max + 134))
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]
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--
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-- Negative numbers
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--
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negativeNumberCast : List String
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negativeNumberCast = [
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show $ cast {to = Bits8} (-19),
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show $ cast {to = Bits16} (-19),
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show $ cast {to = Bits32} (-19),
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show $ cast {to = Bits64} (-19)
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]
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--
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-- Run via code generator
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--
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main : IO ()
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main = do
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printLn bits8WideningNoEffect
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printLn bits16WideningNoEffect
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printLn bits32WideningNoEffect
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printLn narrowFromInteger
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printLn narrowFromInt
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printLn narrowFromBits64
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printLn narrowFromBits32
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printLn narrowFromBits16
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printLn negativeNumberCast
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