mirror of https://github.com/safiire/n65.git
83 lines
2.1 KiB
Ruby
83 lines
2.1 KiB
Ruby
gem 'minitest'
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require 'minitest/autorun'
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require 'minitest/unit'
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require_relative '../lib/n65/memory_space.rb'
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class TestMemorySpace < MiniTest::Test
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include N65
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def _test_create_prog_rom
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## First just try to read alll of it
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space = MemorySpace.create_prog_rom
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contents = space.read(0x8000, 0x4000)
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assert_equal(contents.size, 0x4000)
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assert(contents.all?{|byte| byte.zero?})
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## It is mirrored so this should also work
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space = MemorySpace.create_prog_rom
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contents = space.read(0xC000, 0x4000)
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assert_equal(contents.size, 0x4000)
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assert(contents.all?{|byte| byte.zero?})
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end
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def _test_writing
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## Write some bytes into prog 2 area
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space = MemorySpace.create_prog_rom
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space.write(0xC000, "hi there".bytes)
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## Read them back..
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contents = space.read(0xC000, 8)
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assert_equal('hi there', contents.pack('C*'))
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## Should be mirrored in prog 1
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contents = space.read(0x8000, 8)
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assert_equal('hi there', contents.pack('C*'))
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end
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def _test_reading_out_of_bounds
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space = MemorySpace.create_prog_rom
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assert_raises(MemorySpace::AccessOutsideProgRom) do
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space.read(0x200, 10)
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end
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## But that is valid char rom area, so no explody
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space = MemorySpace.create_char_rom
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space.read(0x200, 10)
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## But something like this should explode
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space = MemorySpace.create_char_rom
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assert_raises(MemorySpace::AccessOutsideCharRom) do
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space.read(0x8001, 10)
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end
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end
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####
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## There seem to be problems writing bytes right to
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## the end of the memory map, specifically where the
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## vector table is in prog rom, so let's test that.
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def test_writing_to_end
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space = MemorySpace.create_prog_rom
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bytes = [0xDE, 0xAD]
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## Write the NMI address to FFFA
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space.write(0xFFFA, bytes)
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## Write the entry point to FFFC
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space.write(0xFFFC, bytes)
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## Write the irq to FFFE, and this fails, saying
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## I'm trying to write to $10000 for some reason.
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space.write(0xFFFE, bytes)
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## Write to the very first
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space.write(0x8000, bytes)
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end
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end
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