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Tests: randomize memory, report untested instructions.

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This commit is contained in:
Zellyn Hunter 2013-02-27 22:43:07 -08:00
parent 0e6ebbb4dc
commit e8738b3d74
1 changed files with 21 additions and 1 deletions
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22
tests/functional_test.go
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@ -6,6 +6,7 @@ package tests
import (
"fmt"
"io/ioutil"
"math/rand"
"testing"
"github.com/zellyn/go6502/asm"
@ -29,6 +30,12 @@ func (c *CycleCount) Tick() {
*c += 1
}
func randomize(k *K64) {
for i := 0; i < 65536; i++ {
k[i] = byte(rand.Int())
}
}
// printStatus prints out the current CPU instruction and register status.
func printStatus(c cpu.Cpu, m K64, cc CycleCount) {
bytes, text, _ := asm.Disasm(c.PC(), m[c.PC()], m[c.PC()+1], m[c.PC()+2])
@ -38,11 +45,16 @@ func printStatus(c cpu.Cpu, m K64, cc CycleCount) {
// Run Klaus Dormann's amazing comprehensive test.
func TestFunctionalTest(t *testing.T) {
unused := map[byte]bool{}
for k, _ := range cpu.Opcodes {
unused[k] = true
}
bytes, err := ioutil.ReadFile("6502_functional_test.bin")
if err != nil {
panic("Cannot read file")
}
var m K64
randomize(&m)
var cc CycleCount
OFFSET := 0xa
copy(m[OFFSET:len(bytes)+OFFSET], bytes)
@ -50,6 +62,7 @@ func TestFunctionalTest(t *testing.T) {
c.Reset()
c.SetPC(0x1000)
for {
unused[m[c.PC()]] = false
oldPC := c.PC()
// printStatus(c, m, cc)
err := c.Step()
@ -59,11 +72,16 @@ func TestFunctionalTest(t *testing.T) {
}
if c.PC() == oldPC {
if c.PC() != 0x3BB5 {
t.Errorf("Stuck at 0x%X: 0x%X\n", oldPC, m[oldPC])
t.Errorf("Stuck at $%04X: 0x%02X", oldPC, m[oldPC])
}
break
}
}
for k, v := range unused {
if v {
t.Errorf("Unused instruction: 0x%2X", k)
}
}
}
// Run Bruce Clark's decimal test in 6502 mode.
@ -73,6 +91,7 @@ func TestDecimalMode6502(t *testing.T) {
panic("Cannot read file")
}
var m K64
randomize(&m)
var cc CycleCount
OFFSET := 0x1000
copy(m[OFFSET:len(bytes)+OFFSET], bytes)
@ -108,6 +127,7 @@ func TestDecimalMode65C02(t *testing.T) {
panic("Cannot read file")
}
var m K64
randomize(&m)
var cc CycleCount
OFFSET := 0x1000
copy(m[OFFSET:len(bytes)+OFFSET], bytes)