import pychrysalide

from chrysacase import ChrysalideTestCase
from pychrysalide import MemoryDataSize
from pychrysalide.arch.operands import ImmediateOperand
from pychrysalide.glibext import StringBuilder


class TestImmediate(ChrysalideTestCase):
    """TestCase for arch.ImmediateOperand."""


    def testBasicImmediate(self):
        """Check basic properties of immediate values."""

        imm = ImmediateOperand(MemoryDataSize._32_BITS_UNSIGNED, 0x123)

        self.assertEqual(imm.size, MemoryDataSize._32_BITS_UNSIGNED)
        self.assertEqual(imm.value, 0x123)
        self.assertFalse(imm.is_negative)


    def testStringBuilderForImmediatesOverriding(self):
        """Override the StringBuilder interface for immediate values."""

        class MyImmOperand(ImmediateOperand, StringBuilder):

            def __init__(self):
                super().__init__(MemoryDataSize._32_BITS_UNSIGNED, 0x123)

            def _to_string(self, flags=0):
                return 'NaN'

        op = MyImmOperand()

        self.assertEqual(op.to_string(), 'NaN')
        self.assertEqual(str(op), 'NaN')
        self.assertEqual(f'{op}', 'NaN')


    def validateValue(self, value, size, padding, strings):
        """Check all kinds of things with a given immediate operand."""

        for d in strings.keys():

            op = ImmediateOperand(size, value)

            self.assertTrue(op.size == size)
            self.assertTrue(op.value == value)

            if padding:
                op.set_flag(ImmediateOperand.ImmOperandFlag.ZERO_PADDING)
            else:
                op.unset_flag(ImmediateOperand.ImmOperandFlag.ZERO_PADDING_BY_DEFAULT)

            op.display = d

            string = op.to_string()
            self.assertEqual(string, strings[d])


    def testByteOne(self):
        """Run sanity checks on immediate operand with value 1."""

        strings = {
            ImmediateOperand.ImmOperandDisplay.BIN: 'b1',
            ImmediateOperand.ImmOperandDisplay.OCT: '01',
            ImmediateOperand.ImmOperandDisplay.DEC: '1',
            ImmediateOperand.ImmOperandDisplay.HEX: '0x1'
        }

        self.validateValue(1, pychrysalide.MemoryDataSize._8_BITS_UNSIGNED, False, strings)


    def testByteOnePadded(self):
        """Run sanity checks on immediate operand with padded value 1."""

        strings = {
            ImmediateOperand.ImmOperandDisplay.BIN: 'b00000001',
            ImmediateOperand.ImmOperandDisplay.OCT: '01',
            ImmediateOperand.ImmOperandDisplay.DEC: '1',
            ImmediateOperand.ImmOperandDisplay.HEX: '0x01'
        }

        self.validateValue(1, pychrysalide.MemoryDataSize._8_BITS_UNSIGNED, True, strings)