Lentil Hoffman
73d2bf23f5
- Implement RelationshipGraphResolver extending Lossy - Add type-safe accumulator for relationship graph state - Update tests and documentation
44 lines
1.2 KiB
TypeScript
44 lines
1.2 KiB
TypeScript
import Debug from "debug";
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import { createDelta } from '../../../../src/core/delta-builder';
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import { Lossless, RhizomeNode } from '../../../../src';
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import { TimestampResolver } from '../../../../src/views/resolvers/timestamp-resolvers';
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const debug = Debug('test:last-write-wins');
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// This was initially written to test a LastWriteWins resolver, but that has been
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// superceded by the TimestampResolver.
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describe('Last write wins', () => {
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describe('given that two separate writes occur', () => {
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const node = new RhizomeNode();
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const lossless = new Lossless(node);
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const lossy = new TimestampResolver(lossless);
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beforeAll(() => {
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lossless.ingestDelta(createDelta('a', 'h')
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.setProperty('broccoli', 'want', 95, 'vegetable')
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.buildV1()
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);
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lossless.ingestDelta(createDelta('a', 'h')
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.setProperty('broccoli', 'want', 90, 'vegetable')
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.buildV1()
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);
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});
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it('our resolver should return the most recently written value', () => {
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const result = lossy.resolve(["broccoli"]);
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debug('result', result);
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expect(result).toMatchObject({
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broccoli: {
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id: "broccoli",
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properties: {
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want: 90
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}
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}
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});
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});
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});
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});
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