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Test Mima.Vm.Instruction

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Joscha 2020-03-27 23:18:23 +00:00
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test/Mima/Vm/InstructionSpec.hs Normal file
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module Mima.Vm.InstructionSpec (spec) where
import Data.Either
import Data.Foldable
import Test.Hspec
import Mima.Vm.Instruction
import Mima.Vm.Word
instructions :: [Instruction]
instructions =
[ SmallInstruction ADD 0x00001
, SmallInstruction JMN 0xAB332
, LargeInstruction HALT 0x0000
, LargeInstruction LDRF 0x0920
] ++ map fst (smallInstructions ++ largeInstructions)
smallInstructions :: [(Instruction, MimaWord)]
smallInstructions =
[ (SmallInstruction LDC 0x0CAFE, 0x00CAFE)
, (SmallInstruction LDV 0x0CAFE, 0x10CAFE)
, (SmallInstruction STV 0x0CAFE, 0x20CAFE)
, (SmallInstruction ADD 0x0CAFE, 0x30CAFE)
, (SmallInstruction AND 0x0CAFE, 0x40CAFE)
, (SmallInstruction OR 0x0CAFE, 0x50CAFE)
, (SmallInstruction XOR 0x0CAFE, 0x60CAFE)
, (SmallInstruction EQL 0x0CAFE, 0x70CAFE)
, (SmallInstruction JMP 0x0CAFE, 0x80CAFE)
, (SmallInstruction JMN 0x0CAFE, 0x90CAFE)
, (SmallInstruction LDIV 0x0CAFE, 0xA0CAFE)
, (SmallInstruction STIV 0x0CAFE, 0xB0CAFE)
, (SmallInstruction CALL 0x0CAFE, 0xC0CAFE)
, (SmallInstruction ADC 0x0CAFE, 0xD0CAFE)
]
largeInstructions :: [(Instruction, MimaWord)]
largeInstructions =
[ (LargeInstruction HALT 0xCAFE, 0xF0CAFE)
, (LargeInstruction NOT 0xCAFE, 0xF1CAFE)
, (LargeInstruction RAR 0xCAFE, 0xF2CAFE)
, (LargeInstruction RET 0xCAFE, 0xF3CAFE)
, (LargeInstruction LDRA 0xCAFE, 0xF4CAFE)
, (LargeInstruction STRA 0xCAFE, 0xF5CAFE)
, (LargeInstruction LDSP 0xCAFE, 0xF6CAFE)
, (LargeInstruction STSP 0xCAFE, 0xF7CAFE)
, (LargeInstruction LDFP 0xCAFE, 0xF8CAFE)
, (LargeInstruction STFP 0xCAFE, 0xF9CAFE)
, (LargeInstruction LDRS 0xCAFE, 0xFACAFE)
, (LargeInstruction STRS 0xCAFE, 0xFBCAFE)
, (LargeInstruction LDRF 0xCAFE, 0xFCCAFE)
, (LargeInstruction STRF 0xCAFE, 0xFDCAFE)
]
spec :: Spec
spec = do
describe "wordToInstruction" $ do
it "correctly recognizes all small instructions" $
for_ smallInstructions $ \(i, w) ->
wordToInstruction w `shouldBe` Right i
it "correctly recognizes all large instructions" $
for_ largeInstructions $ \(i, w) ->
wordToInstruction w `shouldBe` Right i
it "correctly recognizes invalid instructions" $ do
wordToInstruction 0xE00000 `shouldSatisfy` isLeft
wordToInstruction 0xFE0000 `shouldSatisfy` isLeft
wordToInstruction 0xFF0000 `shouldSatisfy` isLeft
it "reverses instructionToWord" $
for_ instructions $ \i ->
wordToInstruction (instructionToWord i) `shouldBe` Right i
describe "instructionToWord" $ do
it "correctly converts all small instructions" $
for_ smallInstructions $ \(i, w) ->
instructionToWord i `shouldBe` w
it "correctly converts all large instructions" $
for_ largeInstructions $ \(i, w) ->
instructionToWord i `shouldBe` w