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Add tests for saving and restoring Disk II state

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These are not exhaustive tests, but they ensure that some basic state
is saved and restored.
This commit is contained in:
Ian Flanigan 2022-06-18 16:55:32 +02:00
parent 31a7267619
commit 298ecbf25b
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2 changed files with 56 additions and 2 deletions
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5
js/cards/disk2.ts
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@ -338,7 +338,7 @@ export default class DiskII implements Card<State> {
/**
* When `1`, the next nibble will be available for read; when `0`,
* the drive is pretending to wait for data to be shifted in by the
* the card is pretending to wait for data to be shifted in by the
* sequencer.
*/
private skip = 0;
@ -742,6 +742,9 @@ export default class DiskII implements Card<State> {
}
getState(): State {
// TODO(flan): This does not accurately save state. It's missing
// all of the state for WOZ disks and the current status of the
// bus.
const result = {
drives: [] as DriveState[],
skip: this.skip,

53
test/js/cards/disk2.spec.ts
View File

@ -4,7 +4,7 @@ import DiskII, { Callbacks } from 'js/cards/disk2';
import CPU6502 from 'js/cpu6502';
import { VideoModes } from 'js/videomodes';
import { mocked } from 'ts-jest/utils';
import { BYTES_BY_TRACK_IMAGE } from '../formats/testdata/16sector';
import { BYTES_BY_SECTOR_IMAGE, BYTES_BY_TRACK_IMAGE } from '../formats/testdata/16sector';
jest.mock('js/apple2io');
jest.mock('js/videomodes');
@ -44,6 +44,57 @@ describe('DiskII', () => {
expect(diskII).not.toBeNull();
});
it('round-trips the state when there are no changes', () => {
const diskII = new DiskII(mockApple2IO, callbacks);
diskII.setBinary(1, 'BYTES_BY_TRACK', 'po', BYTES_BY_TRACK_IMAGE);
const state = diskII.getState();
diskII.setState(state);
expect(diskII.getState()).toEqual(state);
});
it('round-trips the state when there are changes', () => {
const diskII = new DiskII(mockApple2IO, callbacks);
diskII.setBinary(1, 'BYTES_BY_TRACK', 'po', BYTES_BY_TRACK_IMAGE);
diskII.setBinary(2, 'BYTES_BY_SECTOR', 'po', BYTES_BY_SECTOR_IMAGE);
const state = diskII.getState();
// These are just arbitrary changes, not an exhaustive list of fields.
state.drive = 2;
state.skip = 1;
state.latch = 0x42;
state.on = true;
state.writeMode = true;
state.drives[1].tracks[14][12] = 0x80;
state.drives[1].head = 1000;
state.drives[1].phase = 3;
diskII.setState(state);
expect(diskII.getState()).toEqual(state);
});
it('calls all of the callbacks when state is restored', () => {
const diskII = new DiskII(mockApple2IO, callbacks);
diskII.setBinary(1, 'BYTES_BY_TRACK', 'po', BYTES_BY_TRACK_IMAGE);
jest.resetAllMocks();
const state = diskII.getState();
diskII.setState(state);
expect(callbacks.driveLight).toHaveBeenCalledTimes(2);
expect(callbacks.driveLight).toHaveBeenCalledWith(1, false);
expect(callbacks.driveLight).toHaveBeenCalledWith(2, false);
expect(callbacks.label).toHaveBeenCalledTimes(2);
expect(callbacks.label).toHaveBeenCalledWith(1, 'BYTES_BY_TRACK', undefined);
expect(callbacks.label).toHaveBeenCalledWith(2, 'Disk 2', undefined);
expect(callbacks.dirty).toHaveBeenCalledTimes(2);
expect(callbacks.dirty).toHaveBeenCalledWith(1, true);
expect(callbacks.dirty).toHaveBeenCalledWith(2, false);
});
describe('drive lights', () => {
it('turns on drive light 1 when the motor is turned on', () => {
const diskII = new DiskII(mockApple2IO, callbacks);