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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,86 @@ | ||
| package monitor | ||
|
|
||
| import ( | ||
| "testing" | ||
|
|
||
| "github.com/smoynes/elsie/internal/asm" | ||
| "github.com/smoynes/elsie/internal/log" | ||
| "github.com/smoynes/elsie/internal/vm" | ||
| ) | ||
|
|
||
| type trapHarness struct{ *testing.T } | ||
|
|
||
| func (*trapHarness) Logger() *log.Logger { | ||
| log.LogLevel.Set(log.Debug) | ||
| return log.DefaultLogger() | ||
| } | ||
|
|
||
| func TestTrap_Halt(tt *testing.T) { | ||
| t := trapHarness{tt} | ||
|
|
||
| trap := TrapHalt | ||
| haltRoutine := Routine{ | ||
| Name: "Test" + trap.Orig.String(), | ||
| Vector: 0x35, | ||
| Orig: trap.Orig, | ||
| Code: trap.Code, | ||
| Symbols: trap.Symbols, | ||
| } | ||
|
|
||
| obj, err := Generate(haltRoutine) | ||
|
|
||
| if err != nil { | ||
| t.Error(err) | ||
| } | ||
|
|
||
| if len(obj.Code) < 9 { | ||
| // Code must be AT LEAST 10 words: 7 instructions and a few bytes of data. | ||
| t.Error("code too short", len(obj.Code)) | ||
| } else if len(obj.Code) >= 50 { | ||
| // It really should not be TOO long. | ||
| t.Error("code too long", len(obj.Code)) | ||
| } | ||
|
|
||
| // We wish to test this trap without depending upon others so we stub the OUT trap. | ||
| putsRoutine := Routine{ | ||
| Name: "Stub OUT", | ||
| Orig: TrapOut.Orig, | ||
| Vector: TrapOut.Vector, | ||
| Code: []asm.Operation{ | ||
| &asm.RTI{}, | ||
| }, | ||
| Symbols: map[string]uint16{}, | ||
| } | ||
|
|
||
| image := SystemImage{ | ||
| log: t.Logger(), | ||
| Symbols: nil, | ||
| Traps: []Routine{ | ||
| haltRoutine, | ||
| putsRoutine}, | ||
| } | ||
|
|
||
| machine := vm.New( | ||
| WithSystemImage(&image), | ||
| ) | ||
|
|
||
| // Now, we create code to execute the trap under test. | ||
| code := vm.ObjectCode{ | ||
| Orig: 0x3000, | ||
| Code: []vm.Word{ | ||
| vm.Word(vm.NewInstruction(vm.TRAP, 0x25).Encode()), | ||
| }, | ||
| } | ||
|
|
||
| loader := vm.NewLoader(machine) | ||
| loader.Load(code) | ||
|
|
||
| err = machine.Step() | ||
| if err != nil { | ||
| t.Error(err) | ||
| } | ||
|
|
||
| if machine.PC != 0x3000 { | ||
| t.Error("pc", machine) | ||
| } | ||
| } | ||
