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#!/usr/bin/env python3
"""
Test bench for dsassembler.
"""
import unittest
from disas import decode_instruction_complete as di
def make_instruction(ins):
ins <<= 6
ins |= 0x8000
return ins
def dbglog(message: str):
print("\n", end="")
print(message, end="")
class DisasUnitTest(unittest.TestCase):
# from nandgame
# opcode | u | op | op0 | zx | sw
# D+A | 1 | 0 | 0 | 0 | 0
def test_add(self):
ins = 0b10000
ins = make_instruction(ins)
(mnemonic, _, X, Y, _) = di(ins)
dbglog(f" {mnemonic} {X}, {Y}")
self.assertEqual(mnemonic, "add")
self.assertEqual(X, "D")
self.assertEqual(Y, "A")
# D-A | 1 | 1 | 0 | 0 | 0
def test_sub1(self):
ins = 0b11000
ins = make_instruction(ins)
(mnemonic, _, X, Y, _) = di(ins)
dbglog(f" {mnemonic} {X}, {Y}")
self.assertEqual(mnemonic, "sub")
self.assertEqual(X, "D")
self.assertEqual(Y, "A")
# A-D | 1 | 1 | 0 | 0 | 1
def test_sub2(self):
ins = 0b11001
ins = make_instruction(ins)
(mnemonic, _, X, Y, _) = di(ins)
dbglog(f" {mnemonic} {X}, {Y}")
self.assertEqual(mnemonic, "sub")
self.assertEqual(X, "A")
self.assertEqual(Y, "D")
# D+1 | 1 | 0 | 1 | 0 | 0
def test_incD(self):
ins = 0b10100
ins = make_instruction(ins)
(mnemonic, _, X, Y, _) = di(ins)
dbglog(f" {mnemonic} {X}, {Y}")
self.assertEqual(mnemonic, "inc")
self.assertEqual(X, "D")
self.assertEqual(Y, "")
# A+1 | 1 | 0 | 1 | 0 | 1
def test_incA(self):
ins = 0b10101
ins = make_instruction(ins)
(mnemonic, _, X, Y, _) = di(ins)
dbglog(f" {mnemonic} {X}, {Y}")
self.assertEqual(mnemonic, "inc")
self.assertEqual(X, "A")
self.assertEqual(Y, "")
# D-1 | 1 | 1 | 1 | 0 | 0
def test_decD(self):
ins = 0b11100
ins = make_instruction(ins)
(mnemonic, _, X, Y, _) = di(ins)
dbglog(f" {mnemonic} {X}, {Y}")
self.assertEqual(mnemonic, "dec")
self.assertEqual(X, "D")
self.assertEqual(Y, "")
# A-1 | 1 | 1 | 1 | 0 | 1
def test_decA(self):
ins = 0b11101
ins = make_instruction(ins)
(mnemonic, _, X, Y, _) = di(ins)
dbglog(f" {mnemonic} {X}, {Y}")
self.assertEqual(mnemonic, "dec")
self.assertEqual(X, "A")
self.assertEqual(Y, "")
# -D | 1 | 1 | 0 | 1 | 1
def test_minusD(self):
ins = 0b11011
ins = make_instruction(ins)
(mnemonic, _, X, Y, _) = di(ins)
dbglog(f" {mnemonic} {X}, {Y}")
self.assertEqual(mnemonic, "sub")
self.assertEqual(X, "0")
self.assertEqual(Y, "D")
# -A | 1 | 1 | 0 | 1 | 0
def test_minusA(self):
ins = 0b11010
ins = make_instruction(ins)
(mnemonic, _, X, Y, _) = di(ins)
dbglog(f" {mnemonic} {X}, {Y}")
self.assertEqual(mnemonic, "sub")
self.assertEqual(X, "0")
self.assertEqual(Y, "A")
# -1 | 1 | 1 | 1 | 1 | 0
def test_minusOne(self):
ins = 0b11110
ins = make_instruction(ins)
(mnemonic, _, X, Y, _) = di(ins)
dbglog(f" {mnemonic} {X}, {Y}")
self.assertEqual(mnemonic, "dec")
self.assertEqual(X, "0")
self.assertEqual(Y, "")
# 1 | 1 | 0 | 1 | 1 | 0
def test_plusOne(self):
ins = 0b10110
ins = make_instruction(ins)
(mnemonic, _, X, Y, _) = di(ins)
dbglog(f" {mnemonic} {X}, {Y}")
self.assertEqual(mnemonic, "inc")
self.assertEqual(X, "0")
self.assertEqual(Y, "")
# D | 1 | 0 | 0 | 1 | 1
def test_D(self):
ins = 0b10011
ins = make_instruction(ins)
(mnemonic, _, X, Y, _) = di(ins)
dbglog(f" {mnemonic} {X}, {Y}")
self.assertEqual(mnemonic, "add")
self.assertEqual(X, "0")
self.assertEqual(Y, "D")
# A | 1 | 0 | 0 | 1 | 0
def test_A(self):
ins = 0b10010
ins = make_instruction(ins)
(mnemonic, _, X, Y, _) = di(ins)
dbglog(f" {mnemonic} {X}, {Y}")
self.assertEqual(mnemonic, "add")
self.assertEqual(X, "0")
self.assertEqual(Y, "A")
# D&A | 0 | 0 | 0 | 0 | 0
def test_DandA(self):
ins = 0b00000
ins = make_instruction(ins)
(mnemonic, _, X, Y, _) = di(ins)
dbglog(f" {mnemonic} {X}, {Y}")
self.assertEqual(mnemonic, "and")
self.assertEqual(X, "D")
self.assertEqual(Y, "A")
# D|A | 0 | 0 | 1 | 0 | 0
def test_DorA(self):
ins = 0b00100
ins = make_instruction(ins)
(mnemonic, _, X, Y, _) = di(ins)
dbglog(f" {mnemonic} {X}, {Y}")
self.assertEqual(mnemonic, "or")
self.assertEqual(X, "D")
self.assertEqual(Y, "A")
# ~D | 0 | 1 | 1 | 0 | 0
def test_negD(self):
ins = 0b01100
ins = make_instruction(ins)
(mnemonic, _, X, Y, _) = di(ins)
dbglog(f" {mnemonic} {X}, {Y}")
self.assertEqual(mnemonic, "neg")
self.assertEqual(X, "D")
self.assertEqual(Y, "")
# ~A | 0 | 1 | 1 | 0 | 1
def test_negD(self):
ins = 0b01101
ins = make_instruction(ins)
(mnemonic, _, X, Y, _) = di(ins)
dbglog(f" {mnemonic} {X}, {Y}")
self.assertEqual(mnemonic, "neg")
self.assertEqual(X, "A")
self.assertEqual(Y, "")
if __name__ == "__main__":
unittest.main()
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