31 lines
1.2 KiB
JavaScript
31 lines
1.2 KiB
JavaScript
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const assert = require("node:assert/strict");
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const sync = require("../static/sync.js");
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// A second client advances the shared revision while this client is saving.
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// The in-flight local value must not be replaced by the older server value.
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const local = { "crop-parsnip": true, "fish-eel": false };
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const remoteWhileSaving = {
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revision: 6,
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checks: { "crop-parsnip": false, "fish-eel": true }
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};
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const merged = sync.mergeSnapshot(local, new Set(["crop-parsnip"]), 5, remoteWhileSaving);
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assert.equal(merged.applied, true);
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assert.equal(merged.checks["crop-parsnip"], true);
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assert.equal(merged.checks["fish-eel"], true);
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// A response already superseded by a later write must never roll the client back.
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const stale = sync.mergeSnapshot(merged.checks, new Set(), 7, remoteWhileSaving);
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assert.equal(stale.applied, false);
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assert.equal(stale.revision, 7);
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// The write response is authoritative for its own item even after an interleaved poll.
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const confirmed = sync.confirmWrite(merged.checks, 6, {
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itemId: "crop-parsnip",
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checked: true,
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revision: 7
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});
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assert.equal(confirmed.checks["crop-parsnip"], true);
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assert.equal(confirmed.revision, 7);
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console.log("sync race tests passed");
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