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'use strict';
import { cells_update, cells_valid, cells_apply } from './cell.js';
test("growth update rule", () => {
const cells = [[ { type: 'empty' }, { type: 'empty' }, { type: 'plant' } ]];
const update_rules = {
plant: () => {},
empty: (cells, x, y) => {
if (cells[y][x+1].type === 'plant') {
return { world_updates: [{ x, y, from: 'empty', to: 'plant' }] };
}
},
};
expect(cells_update(cells, update_rules)).toEqual([
{ world_updates: [{ x: 1, y: 0, from: 'empty', to: 'plant' }] },
]);
cells[0][1] = { type: 'plant' };
expect(cells_update(cells, update_rules)).toEqual([
{ world_updates: [{ x: 0, y: 0, from: 'empty', to: 'plant' }] },
]);
cells[0][0] = { type: 'plant' };
expect(cells_update(cells, update_rules)).toEqual([]);
});
test("growth update rule applied", () => {
const cells = [[ { type: 'empty' }, { type: 'empty' }, { type: 'plant' } ]];
expect(cells_apply(cells, [{ world_updates:[{ x: 1, y: 0, from: 'empty', to: 'plant' }]}])).toEqual([
[ { type: 'empty' }, { type: 'plant' }, { type: 'plant' } ],
]);
expect(cells_apply(cells, [
{ world_updates: [{ x: 2, y: 0, from: 'plant', to: 'empty' } ]},
{ world_updates: [{ x: 1, y: 0, from: 'empty', to: 'plant' } ]},
{ world_updates: [{ x: 0, y: 0, from: 'empty', to: 'plant' } ]},
])).toEqual([
[ { type: 'plant' }, { type: 'plant' }, { type: 'empty' } ],
]);
});
test("check proposals agains cells for validity", () => {
const cells = [[ { type: 'empty' }, { type: 'empty' }, { type: 'plant' } ]];
expect(cells_valid(cells, { world_updates: [{ x: -1, y: 0, from: 'blah', to: 'blah' }] })).toBe(false);
expect(cells_valid(cells, { world_updates: [{ x: 0, y: 0, from: 'blah', to: 'blah' }] })).toBe(false);
expect(cells_valid(cells, { world_updates: [{ x: 0, y: 0, from: 'empty', to: 'blah' }] })).toBe(true);
expect(cells_valid(cells, { world_updates: [{ x: 2, y: 0, from: 'empty', to: 'blah' }] })).toBe(false);
expect(cells_valid(cells, { world_updates: [{ x: 2, y: 1, from: 'empty', to: 'blah' }] })).toBe(false);
});
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