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import { assemble } from './assembler';
function bytes(hex: string) {
const result = new Uint8Array(hex.length / 2);
for (let i = 0; i < hex.length; i += 2) {
result[i / 2] = parseInt(hex.substr(i, 2), 16);
}
return result;
}
describe('AVR assembler', () => {
it('should assemble ADD instruction', () => {
expect(assemble('ADD r16, r11')).toEqual({
bytes: bytes('0b0d'),
errors: [],
lines: [{ byteOffset: 0, bytes: '0d0b', line: 1, text: 'ADD r16, r11' }]
});
});
it('should support labels', () => {
expect(assemble('loop: JMP loop').bytes).toEqual(bytes('0c940000'));
});
it('should support mutli-line programs', () => {
const input = `
start:
LDI r16, 15
EOR r16, r0
BREQ start
`;
expect(assemble(input).bytes).toEqual(bytes('0fe00025e9f3'));
});
it('should successfully assemble an empty program', () => {
expect(assemble('')).toEqual({
bytes: new Uint8Array(0),
errors: [],
lines: []
});
});
it('should return an empty byte array in case of program error', () => {
expect(assemble('LDI r15, 20')).toEqual({
bytes: new Uint8Array(0),
errors: ['Line 0: Rd out of range: 16<>31'],
lines: []
});
});
});
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