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import {ReplicacheTest, httpStatusUnauthorized} from './replicache.js';
import Replicache, {
REPMWasmInvoker,
ScanBound,
TransactionClosedError,
} from './mod.js';
import {
restoreScanPageSizeForTesting,
setScanPageSizeForTesting,
} from './scan-iterator.js';
import type {ReadTransaction, WriteTransaction} from './mod.js';
import type {JSONValue} from './json.js';
import {assert, expect} from '@esm-bundle/chai';
import * as sinon from 'sinon';
import type {SinonSpy} from 'sinon';
// fetch-mock has invalid d.ts file so we removed that on npm install.
// eslint-disable-next-line @typescript-eslint/ban-ts-comment
// @ts-expect-error
import fetchMock from 'fetch-mock/esm/client.js';
const {fail} = assert;
let rep: ReplicacheTest | null = null;
let rep2: ReplicacheTest | null = null;
const wasmInvoker = new REPMWasmInvoker();
async function replicacheForTesting(
name: string,
{
diffServerURL = '',
dataLayerAuth = '',
diffServerAuth = '',
batchURL = '',
}: {
diffServerURL?: string;
dataLayerAuth?: string;
diffServerAuth?: string;
batchURL?: string;
} = {},
): Promise<ReplicacheTest> {
dbsToDrop.add(name);
return await ReplicacheTest.new({
batchURL,
dataLayerAuth,
diffServerAuth,
diffServerURL,
name,
repmInvoker: wasmInvoker,
});
}
const dbsToDrop = new Set<string>();
async function addData(tx: WriteTransaction, data: {[key: string]: JSONValue}) {
for (const [key, value] of Object.entries(data)) {
await tx.put(key, value);
}
}
const emptyHash = '';
async function asyncIterableToArray<T>(it: AsyncIterable<T>) {
const arr: T[] = [];
for await (const v of it) {
arr.push(v);
}
return arr;
}
teardown(async () => {
fetchMock.restore();
sinon.restore();
if (rep !== null && !rep.closed) {
await rep.close();
rep = null;
}
if (rep2 !== null && !rep2.closed) {
await rep2.close();
rep2 = null;
}
for (const name of dbsToDrop) {
indexedDB.deleteDatabase(name);
}
dbsToDrop.clear();
});
suiteSetup(() => {
setScanPageSizeForTesting(4);
});
suiteTeardown(() => {
restoreScanPageSizeForTesting();
});
async function expectPromiseToReject(p: unknown): Promise<Chai.Assertion> {
let e;
try {
await p;
} catch (ex) {
e = ex;
}
return expect(e);
}
async function expectAsyncFuncToThrow(f: () => unknown, c: unknown) {
(await expectPromiseToReject(f())).to.be.instanceof(c);
}
test('get, has, scan on empty db', async () => {
rep = await replicacheForTesting('test2');
async function t(tx: ReadTransaction) {
expect(await tx.get('key')).to.equal(undefined);
expect(await tx.has('key')).to.be.false;
const scanItems = await asyncIterableToArray(tx.scan());
expect(scanItems).to.have.length(0);
}
await t(rep);
});
test('put, get, has, del inside tx', async () => {
rep = await replicacheForTesting('test3');
const mut = rep.register(
'mut',
async (tx: WriteTransaction, args: {key: string; value: JSONValue}) => {
const key = args['key'];
const value = args['value'];
await tx.put(key, value);
expect(await tx.has(key)).to.equal(true);
const v = await tx.get(key);
expect(v).to.eql(value);
expect(await tx.del(key)).to.equal(true);
expect(await tx.has(key)).to.be.false;
},
);
for (const [key, value] of Object.entries({
a: true,
b: false,
c: null,
d: 'string',
e: 12,
f: {},
g: [],
h: {h1: true},
i: [0, 1],
})) {
await mut({key, value});
}
});
test('scan', async () => {
rep = await replicacheForTesting('test4');
const add = rep.register('add-data', addData);
await add({
'a/0': 0,
'a/1': 1,
'a/2': 2,
'a/3': 3,
'a/4': 4,
'b/0': 5,
'b/1': 6,
'b/2': 7,
'c/0': 8,
});
async function testScanResult<K, V>(
options: {prefix?: string; start?: ScanBound} | undefined,
entries: [K, V][],
) {
if (!rep) {
fail();
return;
}
await rep.query(async tx => {
expect(await asyncIterableToArray(tx.scan(options).entries())).to.eql(
entries,
);
});
await rep.query(async tx => {
expect(await asyncIterableToArray(tx.scan(options))).to.eql(
entries.map(([, v]) => v),
);
});
await rep.query(async tx => {
expect(await asyncIterableToArray(tx.scan(options).values())).to.eql(
entries.map(([, v]) => v),
);
});
await rep.query(async tx => {
expect(await asyncIterableToArray(tx.scan(options).keys())).to.eql(
entries.map(([k]) => k),
);
});
}
await testScanResult(undefined, [
['a/0', 0],
['a/1', 1],
['a/2', 2],
['a/3', 3],
['a/4', 4],
['b/0', 5],
['b/1', 6],
['b/2', 7],
['c/0', 8],
]);
await testScanResult({prefix: 'a'}, [
['a/0', 0],
['a/1', 1],
['a/2', 2],
['a/3', 3],
['a/4', 4],
]);
await testScanResult({prefix: 'b'}, [
['b/0', 5],
['b/1', 6],
['b/2', 7],
]);
await testScanResult({prefix: 'c/'}, [['c/0', 8]]);
await testScanResult(
{
start: {id: {value: 'b/1', exclusive: false}},
},
[
['b/1', 6],
['b/2', 7],
['c/0', 8],
],
);
await testScanResult(
{
start: {id: {value: 'b/1', exclusive: true}},
},
[
['b/2', 7],
['c/0', 8],
],
);
await testScanResult(
{
start: {index: 6},
},
[
['b/1', 6],
['b/2', 7],
['c/0', 8],
],
);
});
test('subscribe', async () => {
const log: [string, JSONValue][] = [];
rep = await replicacheForTesting('subscribe');
const cancel = rep.subscribe(
async (tx: ReadTransaction) => {
const rv = [];
for await (const entry of tx.scan({prefix: 'a/'}).entries()) {
rv.push(entry);
}
return rv;
},
{
onData: (values: Iterable<[string, JSONValue]>) => {
for (const entry of values) {
log.push(entry);
}
},
},
);
expect(log).to.have.length(0);
const add = rep.register('add-data', addData);
await add({'a/0': 0});
expect(log).to.eql([['a/0', 0]]);
// We might potentially remove this entry if we start checking equality.
log.length = 0;
await add({'a/0': 0});
expect(log).to.eql([['a/0', 0]]);
log.length = 0;
await add({'a/1': 1});
expect(log).to.eql([
['a/0', 0],
['a/1', 1],
]);
log.length = 0;
log.length = 0;
await add({'a/1': 11});
expect(log).to.eql([
['a/0', 0],
['a/1', 11],
]);
log.length = 0;
cancel();
await add({'a/1': 11});
await Promise.resolve();
expect(log).to.have.length(0);
});
test('subscribe close', async () => {
rep = await replicacheForTesting('subscribe-close');
const log: (JSONValue | undefined)[] = [];
const cancel = rep.subscribe((tx: ReadTransaction) => tx.get('k'), {
onData: value => log.push(value),
onDone: () => (done = true),
});
expect(log).to.have.length(0);
const add = rep.register('add-data', addData);
await add({k: 0});
await Promise.resolve();
expect(log).to.eql([undefined, 0]);
let done = false;
await rep.close();
expect(done).to.equal(true);
cancel();
});
test('name', async () => {
const repA = await replicacheForTesting('a');
const repB = await replicacheForTesting('b');
const addA = repA.register('add-data', addData);
const addB = repB.register('add-data', addData);
await addA({key: 'A'});
await addB({key: 'B'});
expect(await repA.get('key')).to.equal('A');
expect(await repB.get('key')).to.equal('B');
await repA.close();
await repB.close();
indexedDB.deleteDatabase('a');
indexedDB.deleteDatabase('b');
});
test('register with error', async () => {
rep = await replicacheForTesting('regerr');
const doErr = rep.register('err', async (_, args) => {
throw args;
});
try {
await doErr(42);
fail('Should have thrown');
} catch (ex) {
expect(ex).to.equal(42);
}
});
test('subscribe with error', async () => {
rep = await replicacheForTesting('suberr');
const add = rep.register('add-data', addData);
let gottenValue = 0;
let error;
const cancel = rep.subscribe(
async tx => {
const v = await tx.get('k');
if (v !== undefined && v !== null) {
throw v;
}
},
{
onData: () => {
gottenValue++;
},
onError: e => {
error = e;
},
},
);
await Promise.resolve();
expect(error).to.equal(undefined);
expect(gottenValue).to.equal(0);
await add({k: 'throw'});
expect(gottenValue).to.equal(1);
await Promise.resolve();
expect(error).to.equal('throw');
cancel();
});
test('overlapping writes', async () => {
async function dbWait(tx: ReadTransaction, dur: number) {
// Try to take setTimeout away from me???
const t0 = Date.now();
while (Date.now() - t0 > dur) {
await tx.get('foo');
}
}
function timerWait(dur: number) {
return new Promise(res => setTimeout(res, dur));
}
// writes wait on writes
rep = await replicacheForTesting('conflict');
const mut = rep.register(
'wait-then-return',
async <T extends JSONValue>(
tx: ReadTransaction,
{duration, ret}: {duration: number; ret: T},
) => {
await dbWait(tx, duration);
return ret;
},
);
let resA = mut({duration: 500, ret: 'a'});
// create a gap to make sure resA starts first (our rwlock isn't fair).
await timerWait(100);
let resB = mut({duration: 0, ret: 'b'});
// race them, a should complete first, indicating that b waited
expect(await Promise.race([resA, resB])).to.equal('a');
// wait for the other to finish so that we're starting from null state for next one.
await Promise.all([resA, resB]);
// reads wait on writes
resA = mut({duration: 500, ret: 'a'});
await timerWait(100);
resB = rep.query(() => 'b');
expect(await Promise.race([resA, resB])).to.equal('a');
});
test('sync', async () => {
const diffServerURL = 'https://diff.com/pull';
const batchURL = 'https://batch.com';
let pullCounter = 0;
fetchMock.post(
diffServerURL,
() =>
[
{
stateID: '97dd36bqlpojn302g24hemq2o34v66qm',
lastMutationID: 2,
patch: [
{op: 'remove', path: '/'},
{
op: 'add',
path: '/~1list~11',
valueString: '{"id":1,"ownerUserID":1}',
},
],
checksum: 'e45e820e',
clientViewInfo: {httpStatusCode: 200, errorMessage: ''},
},
{
stateID: '97dd36bqlpojn302g24hemq2o34v66qm',
lastMutationID: 2,
patch: [],
checksum: 'e45e820e',
clientViewInfo: {httpStatusCode: 200, errorMessage: ''},
},
{
stateID: 'g42viqe19kjv8iaahbj8ccs2aiub0po8',
lastMutationID: 3,
patch: [
{
op: 'add',
path: '/~1todo~114323534',
valueString:
'{"complete":false,"id":14323534,"listId":1,"order":10000,"text":"Test"}',
},
],
checksum: 'bb35ac40',
clientViewInfo: {httpStatusCode: 200, errorMessage: ''},
},
{
stateID: '97dd36bqlpojn302g24hemq2o34v66qm',
lastMutationID: 2,
patch: [],
checksum: 'e45e820e',
clientViewInfo: {httpStatusCode: 200, errorMessage: ''},
},
{
stateID: '4aqjcn91pronkc3s1uhpg8gichc1m6hv',
lastMutationID: 6,
patch: [{op: 'remove', path: '/~1todo~114323534'}],
checksum: 'e45e820e',
clientViewInfo: {httpStatusCode: 200, errorMessage: ''},
},
][pullCounter++],
);
let batchCounter = 0;
fetchMock.post(
batchURL,
() =>
[
{
mutationInfos: [
{id: 1, error: 'deleteTodo: todo not found'},
{id: 2, error: 'deleteTodo: todo not found'},
],
},
{mutationInfos: []},
{
mutationInfos: [
{id: 3, error: 'mutation has already been processed'},
],
},
{mutationInfos: []},
][batchCounter++],
);
rep = await replicacheForTesting('sync', {
batchURL,
dataLayerAuth: '1',
diffServerAuth: '1',
diffServerURL,
});
let createCount = 0;
let deleteCount = 0;
let syncHead: string;
let beginSyncResult: {
syncID: string;
syncHead: string;
};
const createTodo = rep.register(
'createTodo',
async <A extends {id: number}>(tx: WriteTransaction, args: A) => {
createCount++;
await tx.put(`/todo/${args.id}`, args);
},
);
const deleteTodo = rep.register(
'deleteTodo',
async <A extends {id: number}>(tx: WriteTransaction, args: A) => {
deleteCount++;
await tx.del(`/todo/${args.id}`);
},
);
const id1 = 14323534;
const id2 = 22354345;
await deleteTodo({id: id1});
await deleteTodo({id: id2});
expect(deleteCount).to.equal(2);
await rep?.sync();
expect(deleteCount).to.equal(2);
beginSyncResult = await rep?.beginSync();
syncHead = beginSyncResult.syncHead;
expect(syncHead).to.equal(emptyHash);
expect(deleteCount).to.equal(2);
await createTodo({
id: id1,
listId: 1,
text: 'Test',
complete: false,
order: 10000,
});
expect(createCount).to.equal(1);
expect(((await rep?.get(`/todo/${id1}`)) as {text: string}).text).to.equal(
'Test',
);
beginSyncResult = await rep?.beginSync();
syncHead = beginSyncResult.syncHead;
expect(syncHead).not.to.equal(emptyHash);
await createTodo({
id: id2,
listId: 1,
text: 'Test 2',
complete: false,
order: 20000,
});
expect(createCount).to.equal(2);
expect(((await rep?.get(`/todo/${id2}`)) as {text: string}).text).to.equal(
'Test 2',
);
await rep?.maybeEndSync(beginSyncResult);
expect(createCount).to.equal(3);
// Clean up
await deleteTodo({id: id1});
await deleteTodo({id: id2});
expect(deleteCount).to.equal(4);
expect(createCount).to.equal(3);
await rep?.sync();
expect(deleteCount).to.equal(4);
expect(createCount).to.equal(3);
});
test('sync2', async () => {
sinon.spy(wasmInvoker, 'invoke');
rep = await replicacheForTesting('sync2', {
batchURL: 'https://replicache-sample-todo.now.sh/serve/replicache-batch',
dataLayerAuth: '1',
diffServerAuth: '1',
});
const s1 = rep.sync();
const s2 = rep.sync();
await s1;
await s2;
const calls = (wasmInvoker.invoke as SinonSpy).args;
const syncCalls = calls.filter(([, rpc]) => rpc === 'beginSync').length;
expect(syncCalls).to.equal(2);
});
test('reauth', async () => {
const diffServerURL = 'https://diff.com/pull';
fetchMock.post(diffServerURL, () => ({
stateID: 'fq40kklle30lr20vpjiv0ios8hgipnut',
lastMutationID: 0,
patch: [{op: 'remove', path: '/'}],
checksum: '00000000',
clientViewInfo: {
httpStatusCode: httpStatusUnauthorized,
errorMessage: 'xxx',
},
}));
rep = await replicacheForTesting('reauth', {
diffServerURL,
diffServerAuth: '1',
dataLayerAuth: 'wrong',
});
const getDataLayerAuthFake = sinon.fake.returns(null);
rep.getDataLayerAuth = getDataLayerAuthFake;
await rep.beginSync();
expect(getDataLayerAuthFake.callCount).to.equal(1);
});
test('closed tx', async () => {
rep = await replicacheForTesting('reauth');
let rtx: ReadTransaction;
await rep.query(tx => (rtx = tx));
await expectAsyncFuncToThrow(() => rtx.get('x'), TransactionClosedError);
await expectAsyncFuncToThrow(() => rtx.has('y'), TransactionClosedError);
await expectAsyncFuncToThrow(
() => rtx.scan().values().next(),
TransactionClosedError,
);
let wtx: WriteTransaction | undefined;
const mut = rep.register('mut', async tx => {
wtx = tx;
});
await mut(0);
expect(wtx).to.not.be.undefined;
await expectAsyncFuncToThrow(() => wtx?.put('z', 1), TransactionClosedError);
await expectAsyncFuncToThrow(() => wtx?.del('w'), TransactionClosedError);
});
test('syncInterval in constructor', async () => {
const rep = new Replicache({
syncInterval: 12.34,
repmInvoker: wasmInvoker,
diffServerURL: 'xxx',
});
expect(rep.syncInterval).to.equal(12.34);
await rep.close();
});
test('closeTransaction after rep.scan', async () => {
sinon.spy(wasmInvoker, 'invoke');
rep = await replicacheForTesting('test5');
const add = rep.register('add-data', addData);
await add({
'a/0': 0,
'a/1': 1,
});
const invokeSpy = wasmInvoker.invoke as SinonSpy;
invokeSpy.resetHistory();
function expectCalls(log: JSONValue[]) {
expect(log).to.eql(log);
const rpcs = invokeSpy.args.map(([, rpc]) => rpc);
expect(rpcs).to.eql(['openTransaction', 'scan', 'closeTransaction']);
}
const it = rep.scan();
const log: JSONValue[] = [];
for await (const v of it) {
log.push(v);
}
expectCalls([0, 1]);
// One more time with return in loop...
log.length = 0;
invokeSpy.resetHistory();
await (async () => {
if (!rep) {
fail();
}
const it = rep.scan();
for await (const v of it) {
log.push(v);
return;
}
})();
expectCalls([0]);
// ... and with a break.
log.length = 0;
invokeSpy.resetHistory();
{
const it = rep.scan();
for await (const v of it) {
log.push(v);
break;
}
}
expectCalls([0]);
// ... and with a throw.
log.length = 0;
invokeSpy.resetHistory();
(
await expectPromiseToReject(
(async () => {
if (!rep) {
fail();
}
const it = rep.scan();
for await (const v of it) {
log.push(v);
throw 'hi!';
}
})(),
)
).to.equal('hi!');
expectCalls([0]);
// ... and with a throw.
log.length = 0;
invokeSpy.resetHistory();
(
await expectPromiseToReject(
(async () => {
if (!rep) {
fail();
}
const it = rep.scan();
for await (const v of it) {
log.push(v);
throw 'hi!';
}
})(),
)
).to.equal('hi!');
expectCalls([0]);
});