mirror of
https://github.com/ariejan/i6502.git
synced 2024-05-28 22:41:34 +00:00
da43c2bca1
Because io.Reader and io.Writer already claim the functions Read and Write it was necessary to rename the Memory interface methods Read and Write to ReadByte and WriteByte.
67 lines
1.3 KiB
Go
67 lines
1.3 KiB
Go
package i6502
|
|
|
|
import (
|
|
"testing"
|
|
|
|
"github.com/stretchr/testify/assert"
|
|
)
|
|
|
|
func TestEmptyAddressBus(t *testing.T) {
|
|
assert := assert.New(t)
|
|
|
|
bus, err := NewAddressBus()
|
|
|
|
assert.Nil(err)
|
|
|
|
if assert.NotNil(bus) {
|
|
assert.Equal(0, len(bus.addressables))
|
|
}
|
|
}
|
|
|
|
func TestAttachToAddressBus(t *testing.T) {
|
|
assert := assert.New(t)
|
|
|
|
bus, _ := NewAddressBus()
|
|
ram, _ := NewRam(0x10000)
|
|
|
|
bus.Attach(ram, 0x0000)
|
|
assert.Equal(1, len(bus.addressables))
|
|
}
|
|
|
|
func TestBusReadWrite(t *testing.T) {
|
|
assert := assert.New(t)
|
|
|
|
bus, _ := NewAddressBus()
|
|
ram, _ := NewRam(0x8000)
|
|
ram2, _ := NewRam(0x8000)
|
|
bus.Attach(ram, 0x0000)
|
|
bus.Attach(ram2, 0x8000)
|
|
|
|
// 8-bit Writing
|
|
bus.WriteByte(0x1234, 0xFA)
|
|
assert.Equal(0xFA, ram.ReadByte(0x1234))
|
|
|
|
// 16-bit Writing
|
|
bus.Write16(0x1000, 0xAB42)
|
|
assert.Equal(0x42, ram.ReadByte(0x1000))
|
|
assert.Equal(0xAB, ram.ReadByte(0x1001))
|
|
|
|
// 8-bit Reading
|
|
ram.WriteByte(0x5522, 0xDA)
|
|
assert.Equal(0xDA, bus.ReadByte(0x5522))
|
|
|
|
// 16-bit Reading
|
|
ram.WriteByte(0x4440, 0x7F)
|
|
ram.WriteByte(0x4441, 0x56)
|
|
assert.Equal(0x567F, bus.Read16(0x4440))
|
|
|
|
//// Test addressing memory not mounted at 0x0000
|
|
|
|
// Read from relative addressable Ram2: $C123
|
|
ram2.WriteByte(0x4123, 0xEF)
|
|
assert.Equal(0xEF, bus.ReadByte(0xC123))
|
|
|
|
bus.WriteByte(0x8001, 0x12)
|
|
assert.Equal(0x12, ram2.ReadByte(0x0001))
|
|
}
|