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removes temps, massive refactor

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This commit is contained in:
Matt Hill
2021-06-18 15:27:36 -06:00
parent 402754468c
commit b77571ebb0
19 changed files with 93 additions and 1135 deletions
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7
client/index.ts
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@@ -1,9 +1,6 @@
export * from './lib/store'
export * from './lib/source/poll-source'
export * from './lib/source/ws-source'
export * from './lib/source/source'
export * from './lib/action-serializer'
export * from './lib/patch-db'
export * from './lib/sequence-store'
export * from './lib/store'
export * from './lib/types'

44
client/lib/action-serializer.ts
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@@ -1,44 +0,0 @@
import { Subject, BehaviorSubject, of, Observable, Observer, throwError } from 'rxjs'
import { concatMap, map, catchError, filter, take } from 'rxjs/operators'
export type Action<T> = {
action: () => T,
notify: BehaviorSubject<undefined | T>
}
export class ActionSerializer {
private readonly sequentialActions = new Subject<Action<any>>()
constructor () {
this.sequentialActions.pipe(
concatMap(({ action, notify }) => fromSync$(action).pipe(
catchError(e => of(notify.next({ error: e }))),
map(result => notify.next({ result })),
)),
catchError(e => of(console.error(`Action Serializer Exception`, e))),
).subscribe()
}
run$<T> (action: () => T): Observable<T> {
const notify = new BehaviorSubject(undefined) as BehaviorSubject<T | undefined>
this.sequentialActions.next({ action, notify })
return (notify as BehaviorSubject<T>).pipe(
filter(res => res !== undefined),
take(1),
concatMap((res: any) => res.error ? throwError(res.error) : of(res.result)),
)
}
}
function fromSync$<S, T> (action: (s: S) => T, s: S): Observable<T>
function fromSync$<T> (action: () => T): Observable<T>
function fromSync$<S, T> (action: (s: S) => T, s?: S): Observable<T> {
return new Observable((subscriber: Observer<T>) => {
try {
subscriber.next(action(s as S))
subscriber.complete()
} catch (e) {
subscriber.error(e)
}
})
}

130
client/lib/patch-db.ts
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@@ -1,133 +1,33 @@
import { EMPTY, from, merge, Observable, of, Subject, timer } from 'rxjs'
import { catchError, concatMap, debounce, debounceTime, delay, finalize, map, skip, take, takeUntil, tap, throttleTime } from 'rxjs/operators'
import { merge, Observable, of } from 'rxjs'
import { concatMap, finalize, map, tap } from 'rxjs/operators'
import { Source } from './source/source'
import { Dump, SequenceStore, Result, Revision } from './sequence-store'
import { Store } from './store'
import { DBCache } from './types'
export { Operation } from 'fast-json-patch'
export class PatchDB<T extends object> {
private readonly cancelStashTimeout = new Subject()
store: Store<T>
private constructor (
private readonly sources: Source<T>[],
private readonly http: Http<T>,
private readonly sequenceStore: SequenceStore<T>,
private readonly timeoutForMissingRevision: number = 5000,
) { }
get store (): Store<T> { return this.sequenceStore.store }
static async init<T extends object> (conf: PatchDbConfig<T>): Promise<PatchDB<T>> {
console.log('PATCHDB - init(): ', conf)
const { sources, http, bootstrapper, timeoutForMissingRevision } = conf
let sequence: number = 0
let data: T = { } as T
try {
const cache = await bootstrapper.init()
console.log('bootstrapped: ', cache)
sequence = cache.sequence
data = cache.data
} catch (e) {
// @TODO what to do if bootstrapper fails?
console.error('bootstrapper failed: ', e)
}
const store = new Store(data)
const sequenceStore = new SequenceStore(store, sequence)
// update cache when sequenceStore emits, throttled
sequenceStore.watch$().pipe(debounceTime(500), skip(1)).subscribe(({ data, sequence }) => {
console.log('PATCHDB - update cache(): ', sequence, data)
bootstrapper.update({ sequence, data }).catch(e => {
console.error('Exception in updateCache: ', e)
})
})
return new PatchDB(sources, http, sequenceStore, timeoutForMissingRevision)
constructor (
private readonly source: Source<T>,
readonly cache: DBCache<T>,
) {
this.store = new Store(cache)
}
sync$ (): Observable<void> {
sync$ (): Observable<DBCache<T>> {
console.log('PATCHDB - sync$()')
const sequence$ = this.sequenceStore.watch$().pipe(map(cache => cache.sequence))
const sequence$ = this.store.watchAll$().pipe(map(cache => cache.sequence))
// nested concatMaps, as it is written, ensure sync is not run for update2 until handleSyncResult is complete for update1.
// flat concatMaps would allow many syncs to run while handleSyncResult was hanging. We can consider such an idea if performance requires it.
return merge(...this.sources.map(s => s.watch$(sequence$))).pipe(
return merge(this.source.watch$(sequence$)).pipe(
tap(update => console.log('PATCHDB - source updated:', update)),
concatMap(update =>
this.sequenceStore.update$(update).pipe(
concatMap(res => this.handleSyncResult$(res)),
),
),
concatMap(update => this.store.update$(update)),
finalize(() => {
console.log('FINALIZING')
this.sequenceStore.sequence = 0
}),
)
}
private handleSyncResult$ (res: Result): Observable<void> {
console.log('PATCHDB - handleSyncResult$(): ', res)
switch (res) {
case Result.DUMPED: return of(this.cancelStashTimeout.next('')) // cancel stash timeout
case Result.REVISED: return of(this.cancelStashTimeout.next('')) // cancel stash timeout
case Result.STASHED: return this.handleStashTimeout$() // call error after timeout
case Result.ERROR: return this.handlePatchError$() // call error immediately
default: return EMPTY
}
}
private handleStashTimeout$ (): Observable<void> {
console.log('PATCHDB - handleStashTimeout$()')
return timer(this.timeoutForMissingRevision).pipe(
tap(time => console.log('PATCHDB - timeout for missing patch:', time)),
takeUntil(this.cancelStashTimeout),
take(1),
concatMap(() => this.handlePatchError$()),
)
}
// Here flattened concatMaps are functionally equivalent to nested because the source observable emits at most once.
private handlePatchError$ (): Observable<void> {
return from(this.http.getDump()).pipe(
concatMap(dump => this.sequenceStore.update$(dump)),
// note the above is a "dump" update, which will always return DUMPED (it can't error)
// handleSyncResult will therefore never re-call handlePatchError()
concatMap(res => this.handleSyncResult$(res)),
catchError(e => {
console.error(e)
return EMPTY
console.log('PATCHDB - FINALIZING sync$()')
this.store.reset()
}),
)
}
}
export type PatchDbConfig<T> = {
http: Http<T>
sources: Source<T>[]
bootstrapper: Bootstrapper<T>
timeoutForMissingRevision?: number
}
export enum PatchOp {
ADD = 'add',
REMOVE = 'remove',
REPLACE = 'replace',
}
export interface Http<T> {
getRevisions (since: number): Promise<Revision[] | Dump<T>>
getDump (): Promise<Dump<T>>
}
export interface Bootstrapper<T> {
init (): Promise<DBCache<T>>
update (cache: DBCache<T>): Promise<void>
}
export interface DBCache<T>{
sequence: number,
data: T
}

211
client/lib/sequence-store.ts
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@@ -1,211 +0,0 @@
import { BehaviorSubject, Observable } from 'rxjs'
import { filter } from 'rxjs/operators'
import { Store } from './store'
import { DBCache } from './patch-db'
import { patchDocument } from './store'
import { ActionSerializer } from './action-serializer'
import { Operation } from 'fast-json-patch'
import BTree from 'sorted-btree'
export class SequenceStore<T extends object> {
private readonly lastState$: BehaviorSubject<DBCache<T>> = new BehaviorSubject(undefined as any)
private readonly actionSerializer = new ActionSerializer()
private preTemps: T
private stashed = new BTree<number, Revision>()
private temps: UpdateTemp[] = []
private sequence$ = new BehaviorSubject(0)
constructor (
readonly store: Store<T>,
initialSequence: number,
) {
const data = store.peek
this.preTemps = data
this.commit({ data, sequence: initialSequence }, [])
}
get sequence (): number { return this.sequence$.getValue() }
set sequence (seq: number) { this.sequence$.next(seq) }
// subscribe to watch$ to get sequence + T feed, e.g. for caching and bootstrapping from a cache
watch$ (): Observable<DBCache<T>> {
return this.lastState$.pipe(filter(a => !!a))
}
update$ (update: Update<T>): Observable<Result> {
return this.actionSerializer.run$(() => {
if (isTemp(update)) {
return this.updateTemp(update)
} else {
return this.updateReal(update)
}
})
}
viewRevisions (): Revision[] {
// return this.revisions.filter(a => !!a)
return this.stashed.valuesArray()
}
private updateReal (update: UpdateReal<T>): Result {
if (update.expireId) { this.temps = this.temps.filter(temp => temp.expiredBy !== update.expireId) }
if (update.id <= this.sequence) return Result.NOOP
const { result, dbCache, revisionsToDelete } = isDump(update) ?
this.dump(update) :
this.revise(update)
this.preTemps = dbCache.data
const afterTemps = this.stageSeqTemps(dbCache)
this.commit(afterTemps, revisionsToDelete)
return result
}
private updateTemp (update: UpdateTemp): Result {
this.temps.push(update)
const data = patchDocument(update.patch, this.store.peek)
const res = {
data,
sequence: this.sequence,
}
this.commit(res, [])
return Result.TEMP
}
private commit (res: DBCache<T>, revisionsToDelete: number[]): void {
const { data, sequence } = res
this.stashed.deleteKeys(revisionsToDelete)
this.sequence$.next(sequence)
this.store.set(data)
this.lastState$.next({ data, sequence })
}
private dump (dump: Dump<T>): { result: Result, dbCache: DBCache<T>, revisionsToDelete: number[] } {
try {
const oldRevisions = this.stashed.filter((key, _) => key < dump.id).keysArray()
const { dbCache, revisionsToDelete } = this.processRevisions(dump.value, dump.id)
return {
result: Result.DUMPED,
dbCache,
revisionsToDelete: oldRevisions.concat(revisionsToDelete),
}
} catch (e) {
console.error(`Dump error for ${JSON.stringify(dump)}: `, e)
return {
result: Result.ERROR,
dbCache: {
data: this.preTemps,
sequence: this.sequence,
},
revisionsToDelete: [],
}
}
}
private revise (revision: Revision): { result: Result, dbCache: DBCache<T>, revisionsToDelete: number[] } {
this.stashed.set(revision.id, revision)
try {
return this.processRevisions(this.preTemps, this.sequence)
} catch (e) {
console.error(`Revise error for ${JSON.stringify(revision)}: `, e)
return {
result: Result.ERROR,
dbCache: {
data: this.preTemps,
sequence: this.sequence,
},
revisionsToDelete: [],
}
}
}
private stageSeqTemps<S extends DBCache<T>> (resultSoFar: S): S {
return this.temps.reduce(({ data, ...rest }, nextTemp ) => {
try {
const nextContents = patchDocument(nextTemp.patch, data)
return { data: nextContents, ...rest } as S
} catch (e) {
console.error(`Skipping temporary patch ${JSON.stringify(nextTemp)} due to exception: `, e)
return { data, ...rest } as S
}
}, resultSoFar)
}
private processRevisions (data: T, sequence: number): { result: Result, dbCache: DBCache<T>, revisionsToDelete: number[] } {
const applicableRevisions = this.applicableRevisions(sequence)
console.log('APPLICABLE: ', applicableRevisions)
if (!applicableRevisions.length) {
return {
result: Result.STASHED,
dbCache: {
data,
sequence,
},
revisionsToDelete: [],
}
}
const revisionsToDelete: number[] = []
const toReturn = applicableRevisions.reduce(({ data, sequence }, revision) => {
const nextContents = patchDocument(revision.patch, data)
const nextSequence = sequence + 1
revisionsToDelete.push(revision.id) // @TODO original was `revisionsToDelete.concat([seqPatch.id])`, why?
return { data: nextContents, sequence: nextSequence }
}, { data, sequence })
return {
result: Result.REVISED,
dbCache: toReturn,
revisionsToDelete,
}
}
private applicableRevisions (sequence: number): Revision[] {
const toReturn = [] as Revision[]
let i = sequence
while (true) {
i++
const next = this.stashed.get(i)
if (next) {
toReturn.push(next)
} else {
break
}
}
return toReturn
}
}
export enum Result {
DUMPED = 'DUMPED', // store was dumped/replaced
REVISED = 'REVISED', // store was revised
TEMP = 'TEMP', // store was revised temporarily
STASHED = 'STASHED', // attempted to revise store but sequence too high. revision stashed for later
ERROR = 'ERROR', // attempted to revise/dump store, but failed
NOOP = 'NOOP', // sequence too low, update ignored
}
// revise a collection of nodes.
export type Revision = { id: number, patch: Operation[], expireId: string | null }
// dump/replace the entire store with T
export type Dump<T> = { id: number, value: T, expireId: string | null }
export type Update<T> = UpdateReal<T> | UpdateTemp
export type UpdateReal<T> = Revision | Dump<T>
export type UpdateTemp = Omit<Revision, 'id' | 'expireId'> & { expiredBy : string }
function isTemp<T> (s: Update<T>): s is UpdateTemp {
return !!(s as any).expiredBy
}
function isRevision<T> (s: Update<T>): s is Revision {
return !isTemp(s) && !!(s as any).patch
}
function isDump<T> (s: UpdateReal<T>): s is Dump<T> {
return !isTemp(s) && !!(s as any).value
}

5
client/lib/source/poll-source.ts
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@@ -1,7 +1,6 @@
import { BehaviorSubject, concat, from, Observable, of } from 'rxjs'
import { catchError, concatMap, delay, skip, switchMap, take, tap } from 'rxjs/operators'
import { Http } from '../patch-db'
import { UpdateReal } from '../sequence-store'
import { Http, Update } from '../types'
import { Source } from './source'
export type PollConfig = {
@@ -15,7 +14,7 @@ export class PollSource<T> implements Source<T> {
private readonly http: Http<T>,
) { }
watch$ (sequence$: Observable<number>): Observable<UpdateReal<T>> {
watch$ (sequence$: Observable<number>): Observable<Update<T>> {
console.log('POLL_SOURCE - watch$()')
const polling$ = new BehaviorSubject('')

2
client/lib/source/source.ts
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@@ -1,5 +1,5 @@
import { Observable } from 'rxjs'
import { Update } from '../sequence-store'
import { Update } from '../types'
export interface Source<T> {
watch$ (sequence$?: Observable<number>): Observable<Update<T>>

18
client/lib/source/ws-source.ts
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@@ -1,21 +1,27 @@
import { Observable } from 'rxjs'
import { webSocket, WebSocketSubject, WebSocketSubjectConfig } from 'rxjs/webSocket'
import { UpdateReal } from '../sequence-store'
import { Update } from '../types'
import { Source } from './source'
export class WebsocketSource<T> implements Source<T> {
private websocket$: WebSocketSubject<UpdateReal<T>>
private websocket$: WebSocketSubject<Update<T>>
constructor (
readonly url: string,
) {
const fullConfig: WebSocketSubjectConfig<UpdateReal<T>> = {
const fullConfig: WebSocketSubjectConfig<Update<T>> = {
url,
openObserver: {
next: () => console.log('WebSocket connection open'),
next: () => {
console.log('WebSocket connection open')
this.websocket$.next('open message' as any)
},
},
closeObserver: {
next: () => console.log('WebSocket connection closed'),
next: () => {
console.log('WebSocket connection closed')
// @TODO re-open websocket on retry loop
},
},
closingObserver: {
next: () => console.log('Websocket subscription cancelled, websocket closing'),
@@ -24,5 +30,5 @@ export class WebsocketSource<T> implements Source<T> {
this.websocket$ = webSocket(fullConfig)
}
watch$ (): Observable<UpdateReal<T>> { return this.websocket$.asObservable() }
watch$ (): Observable<Update<T>> { return this.websocket$.asObservable() }
}

55
client/lib/store.ts
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@@ -1,17 +1,17 @@
import { from, Observable } from 'rxjs'
import { applyPatch, Operation } from 'fast-json-patch'
import { observable, runInAction } from 'mobx'
import { from, Observable, of } from 'rxjs'
import { toStream } from 'mobx-utils'
import { DBCache, Dump, Revision, Update } from './types'
import { applyPatch } from 'fast-json-patch'
export class Store<T extends object> {
private o: { data: T }
export class Store<T extends { }> {
cache: DBCache<T>
constructor (data: T) {
this.o = observable({ data })
constructor (
readonly initialCache: DBCache<T>,
) {
this.cache = initialCache
}
get peek (): T { return this.o.data }
watch$ (): Observable<T>
watch$<P1 extends keyof T> (p1: P1): Observable<T[P1]>
watch$<P1 extends keyof T, P2 extends keyof T[P1]> (p1: P1, p2: P2): Observable<T[P1][P2]>
@@ -20,29 +20,38 @@ export class Store<T extends object> {
watch$<P1 extends keyof T, P2 extends keyof T[P1], P3 extends keyof T[P1][P2], P4 extends keyof T[P1][P2][P3], P5 extends keyof T[P1][P2][P3][P4]> (p1: P1, p2: P2, p3: P3, p4: P4, p5: P5): Observable<T[P1][P2][P3][P4][P5]>
watch$<P1 extends keyof T, P2 extends keyof T[P1], P3 extends keyof T[P1][P2], P4 extends keyof T[P1][P2][P3], P5 extends keyof T[P1][P2][P3][P4], P6 extends keyof T[P1][P2][P3][P4][P5]> (p1: P1, p2: P2, p3: P3, p4: P4, p5: P5, p6: P6): Observable<T[P1][P2][P3][P4][P5][P6]>
watch$ (...args: (string | number)[]): Observable<any> {
return from(toStream(() => this.peekAccess(...args), true))
return from(toStream(() => this.peekNode(...args), true))
}
set (data: T): void {
runInAction(() => this.o.data = data)
watchAll$ (): Observable<DBCache<T>> {
return of(this.cache)
}
applyPatchDocument (patch: Operation[]): { oldDocument: T, newDocument: T } {
const oldDocument = this.o.data
const newDocument = patchDocument(patch, oldDocument)
this.set(newDocument)
return { oldDocument, newDocument }
update$ (update: Update<T>): Observable<DBCache<T>> {
console.log('UPDATE:', update)
if ((update as Revision).patch) {
if (this.cache.sequence + 1 !== update.id) throw new Error(`Outdated sequence: current: ${this.cache.sequence}, new: ${update.id}`)
applyPatch(this.cache.data, (update as Revision).patch, true, true)
} else {
this.cache.data = (update as Dump<T>).value
}
this.cache.sequence = update.id
return of(this.cache)
}
private peekAccess (...args: (string | number)[]): any {
reset (): void {
this.cache = {
sequence: 0,
data: { },
}
}
private peekNode (...args: (string | number)[]): any {
try {
return args.reduce((acc, next) => (acc as any)[`${next}`], this.o.data)
return args.reduce((acc, next) => (acc as any)[`${next}`], this.cache.data)
} catch (e) {
return undefined
}
}
}
export function patchDocument<T> (patch: Operation[], doc: T): T {
return applyPatch(doc, patch, true, false).newDocument
}

29
client/lib/types.ts Normal file
View File

@@ -0,0 +1,29 @@
import { Operation } from 'fast-json-patch'
// revise a collection of nodes.
export type Revision = { id: number, patch: Operation[], expireId: string | null }
// dump/replace the entire store with T
export type Dump<T> = { id: number, value: T, expireId: string | null }
export type Update<T> = Revision | Dump<T>
export enum PatchOp {
ADD = 'add',
REMOVE = 'remove',
REPLACE = 'replace',
}
export interface Http<T> {
getRevisions (since: number): Promise<Revision[] | Dump<T>>
getDump (): Promise<Dump<T>>
}
export interface Bootstrapper<T> {
init (): Promise<DBCache<T>>
update (cache: DBCache<T>): Promise<void>
}
export interface DBCache<T>{
sequence: number,
data: T | { }
}

12
client/package-lock.json generated
View File

@@ -14,7 +14,6 @@
"mobx": "^6.1.4",
"mobx-utils": "^6.0.3",
"rxjs": "^6.6.3",
"sorted-btree": "^1.5.0",
"uuid": "^8.3.2"
},
"devDependencies": {
@@ -1179,12 +1178,6 @@
"randombytes": "^2.1.0"
}
},
"node_modules/sorted-btree": {
"version": "1.5.0",
"resolved": "https://registry.npmjs.org/sorted-btree/-/sorted-btree-1.5.0.tgz",
"integrity": "sha512-1KzY80r3VpwGLGN/9oWjReUml3czxKfLz4iMV8Ro9KAHCg9xt0HwTkcb20JR+sHCiR5WUJ6uMAbe/HB3gy1qYA==",
"license": "MIT"
},
"node_modules/source-map": {
"version": "0.6.1",
"resolved": "https://registry.npmjs.org/source-map/-/source-map-0.6.1.tgz",
@@ -2569,11 +2562,6 @@
"randombytes": "^2.1.0"
}
},
"sorted-btree": {
"version": "1.5.0",
"resolved": "https://registry.npmjs.org/sorted-btree/-/sorted-btree-1.5.0.tgz",
"integrity": "sha512-1KzY80r3VpwGLGN/9oWjReUml3czxKfLz4iMV8Ro9KAHCg9xt0HwTkcb20JR+sHCiR5WUJ6uMAbe/HB3gy1qYA=="
},
"source-map": {
"version": "0.6.1",
"resolved": "https://registry.npmjs.org/source-map/-/source-map-0.6.1.tgz",

1
client/package.json
View File

@@ -16,7 +16,6 @@
"mobx": "^6.1.4",
"mobx-utils": "^6.0.3",
"rxjs": "^6.6.3",
"sorted-btree": "^1.5.0",
"uuid": "^8.3.2"
},
"devDependencies": {

21
client/tests/mocks/bootstrapper.mock.ts
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@@ -1,21 +0,0 @@
import { Bootstrapper, DBCache } from '../../lib/patch-db'
export class MockBootstrapper<T> implements Bootstrapper<T> {
constructor (
private sequence: number = 0,
private data: T = { } as T,
) { }
async init (): Promise<DBCache<T>> {
return {
sequence: this.sequence,
data: this.data as T,
}
}
async update (cache: DBCache<T>): Promise<void> {
this.sequence = cache.sequence
this.data = cache.data
}
}

17
client/tests/mocks/http.mock.ts
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@@ -1,17 +0,0 @@
import { Http } from '../../lib/patch-db'
import { Revision, Dump } from '../../lib/sequence-store'
export class MockHttp<T> implements Http<T> {
constructor (private readonly mockData: {
getSequences: Revision[],
getDump: Dump<T>
}) { }
getRevisions (): Promise<Revision[]> {
return Promise.resolve(this.mockData.getSequences)
}
getDump (): Promise<Dump<T>> {
return Promise.resolve(this.mockData.getDump)
}
}

1
client/tests/mocks/mock-data.json
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File diff suppressed because one or more lines are too long

18
client/tests/mocks/source.mock.ts
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@@ -1,18 +0,0 @@
import { Observable } from 'rxjs'
import { UpdateReal } from '../../lib/sequence-store'
import { Source } from '../../lib/source/source'
export class MockSource<T> implements Source<T> {
constructor (
private readonly mockData: Observable<UpdateReal<T>>,
) { }
watch$ (): Observable<UpdateReal<T>> {
return this.mockData
}
start (): void { }
stop (): void { }
}

90
client/tests/patch-db.test.ts
View File

@@ -1,90 +0,0 @@
import { expect } from 'chai'
import { TestScheduler } from 'rxjs/testing'
import { PatchDB } from '../lib/patch-db'
import { MockSource } from './mocks/source.mock'
import { MockHttp } from './mocks/http.mock'
import { PatchOp } from '../lib/patch-db'
import { from } from 'rxjs'
import { MockBootstrapper } from './mocks/bootstrapper.mock'
import { UpdateReal } from '../lib/sequence-store'
import { RemoveOperation } from 'fast-json-patch'
import 'chai-string'
type Test = { a: string, b: number[], c: object, newKey?: string }
describe('patch db', function () {
let scheduler: TestScheduler
beforeEach(() => {
scheduler = new TestScheduler((actual, expected) => {
// console.log('actual', JSON.stringify(actual))
// console.log('expected', JSON.stringify(expected))
expect(actual).eql(expected)
})
})
it('dumps', () => {
scheduler.run(({ expectObservable, cold }) => {
const initialData: Test = { a: 'value', b: [1, 2, 3], c: { d: 1, e: 2, f: 3 } }
const bootstrapper = new MockBootstrapper(0, initialData)
const http = new MockHttp( { getSequences: [], getDump: { id: 0, value: { }, expireId: null } } )
const updates = {
a: { id: 1, value: { a: 'value1', b: [1, 2, 3], c: { d: 1, e: 2, f: 3 } }, expireId: null },
b: { id: 3, value: { a: 'value3', b: [1, 2, 3], c: { d: 1, e: 2, f: 3 } }, expireId: null },
c: { id: 2, value: { a: 'value2', b: [1, 2, 3], c: { d: 1, e: 2, f: 3 } }, expireId: null }, // ooo for fun
}
const source = new MockSource<Test>(
cold(Object.keys(updates).join(''), updates),
)
PatchDB.init({ sources: [source], http, bootstrapper }).then(pdb => {
pdb.sync$().subscribe()
expectObservable(pdb.store.watch$()).toBe('ab-', { a: updates.a.value, b: updates.b.value })
})
})
})
it('replaces + adds', () => {
scheduler.run( ({ expectObservable, cold }) => {
const initialData: Test = { a: 'value', b: [1, 2, 3], c: { d: 1, e: 2, f: 3 } }
const finalStore: Test = { a: 'value1', b: [1, 2, 3], c: { d: 1, e: 2, f: 3 }, newKey: 'newValue' }
const bootstrapper = new MockBootstrapper(0, initialData )
const http = new MockHttp({ getSequences: [], getDump: { id: 0, value: { }, expireId: null } } )
const updates = {
a: { id: 1, value: { a: 'value1', b: [1, 2, 3], c: { d: 1, e: 2, f: 3 } }, expireId: null },
b: { id: 2, patch: [{ op: PatchOp.ADD, value: 'newValue', path: '/newKey' }], expireId: null},
}
const source = new MockSource<Test>(
cold(Object.keys(updates).join(''), updates),
)
PatchDB.init({ sources: [source], http, bootstrapper }).then(pdb => {
pdb.sync$().subscribe()
expectObservable(pdb.store.watch$()).toBe('ab', { a: updates.a.value, b: finalStore })
})
})
})
it('gets db dump with invalid patch', done => {
const initialData: Test = { a: 'value', b: [1, 2, 3], c: { d: 1, e: 2, f: 3 } }
const finalStore: Test = { a: 'value1', b: [1, 2, 3], c: { d: 1, e: 2, f: 3 }, newKey: 'newValue' }
const bootstrapper = new MockBootstrapper(0, initialData)
const http = new MockHttp({ getSequences: [], getDump: { id: 2, value: finalStore, expireId: null } })
const updates: UpdateReal<any>[] = [
{ id: 1, value: { a: 'value1', b: [1, 2, 3], c: { d: 1, e: 2, f: 3 } }, expireId: null },
{ id: 2, patch: [{ op: PatchOp.REMOVE, path: '/newKey' } as RemoveOperation], expireId: null},
]
const source = new MockSource<Test>(
from(updates),
)
PatchDB.init({ sources: [source], http, bootstrapper }).then(pdb => {
let counter = 0
pdb.store.watch$().subscribe(i => {
counter ++
if (counter === 2) done()
})
pdb.sync$().subscribe()
})
})
})

195
client/tests/seq.test.ts
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@@ -1,195 +0,0 @@
import { expect } from 'chai'
import { PatchOp } from '../lib/patch-db'
import { TestScheduler } from 'rxjs/testing'
import { Result, SequenceStore } from '../lib/sequence-store'
import { concatMap, map } from 'rxjs/operators'
import { Store } from '../lib/store'
import { RemoveOperation } from 'fast-json-patch'
import 'chai-string'
type TestStore = { a: string, b: number[], c?: { [key: string]: number } }
describe('sequence store', function () {
let scheduler: TestScheduler
beforeEach(() => {
scheduler = new TestScheduler((actual, expected) => {
// console.log('actual', JSON.stringify(actual))
// console.log('expected', JSON.stringify(expected))
expect(actual).eql(expected)
})
})
it('dumps', done => {
const initialStore: TestStore = { a: 'value', b: [1, 2, 3], c: { d: 1, e: 2, f: 3 } }
const finalStore: TestStore = { a: 'valueX', b: [0], c: { g: 10 } }
const store = new Store(initialStore)
const toTest = new SequenceStore(store, 0)
toTest.update$({ id: 5, value: finalStore, expireId: null }).subscribe(() => {
expect(toTest.store.peek).eql(finalStore)
expect(toTest.sequence).eql(5)
done()
})
})
it('ignores dump for id too low', done => {
const initialStore: TestStore = { a: 'value', b: [1, 2, 3], c: { d: 1, e: 2, f: 3 } }
const finalStore: TestStore = { a: 'valueX', b: [0], c: { g: 10 } }
const store = new Store(initialStore)
const toTest = new SequenceStore(store, 0)
toTest.update$({ id: 5, value: finalStore, expireId: null }).pipe(concatMap(() =>
toTest.update$({ id: 4, value: initialStore, expireId: null }),
)).subscribe(() => {
expect(toTest.store.peek).eql(finalStore)
expect(toTest.sequence).eql(5)
done()
})
})
it('revises', done => {
const initialStore: TestStore = { a: 'value', b: [1, 2, 3], c: { d: 1, e: 2, f: 3 } }
const finalStore: TestStore = { a: 'value', b: [1, 2, 3], c: { g: 10 } }
const store = new Store(initialStore)
const toTest = new SequenceStore(store, 0)
toTest.update$({ id: 1, patch: [{ op: PatchOp.REPLACE, value: finalStore.c, path: '/c' }], expireId: null }).subscribe(() => {
expect(toTest.store.peek).eql(finalStore)
expect(toTest.sequence).eql(1)
done()
})
})
it('saves a revision when not next in line', done => {
const initialStore: TestStore = { a: 'value', b: [1, 2, 3], c: { d: 1, e: 2, f: 3 } }
const finalStore: TestStore = { a: 'value', b: [1, 2, 3], c: { g: 10 } }
const store = new Store(initialStore)
const toTest = new SequenceStore(store, 0)
toTest.update$({ id: 2, patch: [{ op: PatchOp.REPLACE, value: finalStore.c, path: '/c' }], expireId: null }).subscribe(() => {
expect(toTest.store.peek).eql(initialStore)
expect(toTest.sequence).eql(0)
done()
})
})
it('applies saved revisions when contiguous revisions become available', done => {
const initialStore: TestStore = { a: 'value', b: [1, 2, 3], c: { d: 1, e: 2, f: 3 } }
const finalStore: TestStore = { a: 'value', b: [1, 2, 3, 4], c: { g: 10 } }
const store = new Store(initialStore)
const toTest = new SequenceStore(store, 0)
toTest.update$({ id: 2, patch: [{ op: PatchOp.REPLACE, value: finalStore.c, path: '/c' }], expireId: null }).pipe(concatMap(() =>
toTest.update$({ id: 1, patch: [{ op: PatchOp.ADD, value: 4, path: '/b/-' }], expireId: null }),
)).subscribe(() => {
expect(toTest.store.peek).eql(finalStore)
expect(toTest.sequence).eql(2)
done()
})
})
it('applies saved revisions when contiguous revisions become available part 2', done => {
const initialStore: TestStore = { a: 'value', b: [1, 2, 3], c: { d: 1, e: 2, f: 3 } }
const finalStore: TestStore = { a: 'value2', b: [0], c: { g: 10 } }
const store = new Store(initialStore)
const toTest = new SequenceStore(store, 0)
toTest.update$({ id: 2, patch: [{ op: PatchOp.REPLACE, value: finalStore.c, path: '/c' }], expireId: null }).pipe(concatMap(() =>
toTest.update$({ id: 1, value: { a: 'value2', b: [0], c: { d: 1, e: 2, f: 3 } }, expireId: null }),
)).subscribe(() => {
expect(toTest.store.peek).eql(finalStore)
expect(toTest.sequence).eql(2)
done()
})
})
it('wipes out stashed patches when sequence is force updated', done => {
const initialStore: TestStore = { a: 'value', b: [1, 2, 3], c: { d: 1, e: 2, f: 3 } }
const finalStore: TestStore = { a: 'value2', b: [0], c: { g: 10 } }
const store = new Store(initialStore)
const toTest = new SequenceStore(store, 0)
// patch gets stashed
expect(toTest.viewRevisions().length).eql(0)
toTest.update$({ id: 2, patch: [{ op: PatchOp.REPLACE, value: finalStore.c, path: '/c' }], expireId: null }).pipe(
map(res => expect(res).eql(Result.STASHED) && expect(toTest.viewRevisions().length).eql(1)),
concatMap(() => toTest.update$({ id: 3, value: finalStore, expireId: null })),
map(res => expect(res).eql(Result.DUMPED) && expect(toTest.viewRevisions().length).eql(0)),
).subscribe(() => done())
})
it('emits sequence + state on updates (revisions)', () => {
scheduler.run( ({ expectObservable, cold }) => {
const initialStore: TestStore = { a: 'value', b: [1, 2, 3], c: { d: 1, e: 2, f: 3 } }
const finalStore: TestStore = { a: 'value2', b: [0], c: { g: 10 } }
const store = new Store(initialStore)
const toTest = new SequenceStore(store, 0)
const expectedStream = 'ab'
cold('-b').subscribe(() => {
toTest.update$({ id: 3, value: finalStore, expireId: null }).subscribe()
})
expectObservable(toTest.watch$().pipe(
map(cache => ({ sequence: cache.sequence, contents: cache.data})),
)).toBe(expectedStream, {
a: { sequence: 0, contents: initialStore },
b: { sequence: 3, contents: finalStore },
})
})
})
it('emits sequence + state on updates (patch)', () => {
scheduler.run( ({ expectObservable, cold }) => {
const initialStore: TestStore = { a: 'value', b: [1, 2, 3], c: { d: 1, e: 2, f: 3 } }
const finalStore: TestStore = { a: 'value', b: [1, 2, 3], c: { d: 1, e: 2, f: 3, g: 4 } }
const store = new Store(initialStore)
const toTest = new SequenceStore(store, 0)
const expectedStream = 'ab'
cold('-b').subscribe(() => {
toTest.update$({ id: 1, patch: [{ op: PatchOp.ADD, path: '/c/g', value: 4 }], expireId: null }).subscribe()
})
expectObservable(toTest.watch$().pipe(
map(cache => ({ sequence: cache.sequence, contents: cache.data })),
)).toBe(expectedStream, {
a: { sequence: 0, contents: initialStore },
b: { sequence: 1, contents: finalStore },
})
})
})
it('errors bubble out in results', done => {
const initialStore : TestStore = { a: 'value' , b: [1, 2, 3], c: { d: 1, e: 2, f: 3 } }
const intermediaryStore : TestStore = { a: 'value' , b: [1, 2, 3] }
const finalStore : TestStore = { a: 'value' , b: [1, 2, 3] }
const store = new Store(initialStore)
const toTest = new SequenceStore(store, 0)
const patch1 = {
id: 1,
patch: [{ op: PatchOp.REMOVE, path: '/c' } as RemoveOperation],
expireId: null,
}
const patch2 = {
id: 2,
patch: [{ op: PatchOp.ADD, value: 4, path: '/c/g' }],
expireId: null,
}
toTest.update$(patch1).pipe(
map(res => expect(res).eql(Result.REVISED) && expect(toTest.store.peek).eql(intermediaryStore)),
concatMap(() => toTest.update$(patch2)),
).subscribe(res => {
expect(res).eql(Result.ERROR)
expect(toTest.store.peek).eql(finalStore)
expect(toTest.sequence).eql(1)
done()
})
})
})

214
client/tests/store.test.ts
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@@ -1,214 +0,0 @@
import { expect } from 'chai'
import { PatchOp } from '../lib/patch-db'
import { TestScheduler } from 'rxjs/testing'
import { Store } from '../lib/store'
import { tap } from 'rxjs/operators'
import { AddOperation, RemoveOperation, ReplaceOperation } from 'fast-json-patch'
import 'chai-string'
describe('rx store', function () {
let scheduler: TestScheduler
beforeEach(() => {
scheduler = new TestScheduler((actual, expected) => {
// console.log('actual', JSON.stringify(actual))
// console.log('expected', JSON.stringify(expected))
expect(actual).eql(expected)
})
})
it('returns old and new store state', () => {
const initialStore = { a: 'value', b: [1, 2, 3], c: { d: 1, e: 2, f: 3 } }
const expectedFinalStore = { a: 'value', b: [1, 2, 3], c: { d: 1, e: 2, f: 3 }, newKey: 'newValue', newKey2: 'newValue2', newKey3: 'newValue3' }
const toTest = new Store(initialStore)
const add: AddOperation<string> = { op: PatchOp.ADD, value: 'newValue', path: '/newKey' }
const add2: AddOperation<string> = { op: PatchOp.ADD, value: 'newValue2', path: '/newKey2' }
const add3: AddOperation<string> = { op: PatchOp.ADD, value: 'newValue3', path: '/newKey3' }
const { oldDocument, newDocument} = toTest.applyPatchDocument([add, add2, add3])
expect(oldDocument).eql(initialStore)
expect(newDocument).eql(expectedFinalStore)
})
it('adds', () => {
scheduler.run( ({ expectObservable, cold }) => {
const initialStore = { a: 'value', b: [1, 2, 3], c: { d: 1, e: 2, f: 3 } }
const expectedIntermediateStore = { a: 'value', b: [1, 2, 3], c: { d: 1, e: 2, f: 3 }, newKey: 'newValue', newKey2: 'newValue2' }
const expectedFinalStore = { a: 'value', b: [1, 2, 3], c: { d: 1, e: 2, f: 3 }, newKey: 'newValue', newKey2: 'newValue2', newKey3: 'newValue3' }
const toTest = new Store(initialStore)
const add: AddOperation<string> = { op: PatchOp.ADD, value: 'newValue', path: '/newKey' }
const add2: AddOperation<string> = { op: PatchOp.ADD, value: 'newValue2', path: '/newKey2' }
const add3: AddOperation<string> = { op: PatchOp.ADD, value: 'newValue3', path: '/newKey3' }
const expectedStream = 'abc'
cold('-bc', { b: [add, add2], c: [add3] }).subscribe(i => toTest.applyPatchDocument(i))
expectObservable(toTest.watch$()).toBe(expectedStream, { a: initialStore, b: expectedIntermediateStore, c: expectedFinalStore })
})
})
it('adds + revises + removes', () => {
scheduler.run( ({ expectObservable, cold }) => {
const initialStore = { a: 'value', b: [1, 2, 3], c: { d: 1, e: 2, f: 3 } }
const expectedFinalStore = { a: 'value', b: [1, 2, 3], newKey: 'newValue', newKey2: 'newValue3' }
const toTest = new Store(initialStore)
const add: AddOperation<string> = { op: PatchOp.ADD, value: 'newValue', path: '/newKey' }
const add2: AddOperation<string> = { op: PatchOp.ADD, value: 'newValue2', path: '/newKey2' }
const revise: ReplaceOperation<string> = { op: PatchOp.REPLACE, value: 'newValue3', path: '/newKey2' }
const remove: RemoveOperation = { op: PatchOp.REMOVE, path: '/c' }
const expectedStream = 'ab'
cold('-b').subscribe(_ => toTest.applyPatchDocument([add, add2, revise, remove]))
expectObservable(toTest.watch$()).toBe(expectedStream, { a: initialStore, b: expectedFinalStore })
})
})
it('serializes', done => {
const initialStore = { a: 'value', b: [1, 2, 3], c: { d: 1, e: 2, f: 3 } }
const intermediaryStore = { a: 'value', b: [1, 2, 3], newKey: 'newValue', c: { d: 1, e: 2, f: 3 } }
const toTest = new Store(initialStore)
const add: AddOperation<string> = { op: PatchOp.ADD, value: 'newValue', path: '/newKey' }
const unAdd: RemoveOperation = { op: PatchOp.REMOVE, path: '/newKey' }
let i = 0
toTest.watch$().subscribe(t => {
if (i === 0) { expect(t).eql(initialStore) }
if (i === 1) { expect(t).eql(intermediaryStore) }
if (i === 2) { expect(t).eql(initialStore); done() }
i += 1
})
toTest.applyPatchDocument([add])
toTest.applyPatchDocument([unAdd])
})
it('doesnt apply invalid patches', done => {
const initialStore = { a: 'value', b: [1, 2, 3], c: { d: 1, e: 2, f: 3 } }
const toTest = new Store(initialStore)
const removeValid: RemoveOperation = { op: PatchOp.REMOVE, path: '/b' }
const removeInvalid: RemoveOperation = { op: PatchOp.REMOVE, path: '/newKey' }
try {
toTest.applyPatchDocument([removeValid, removeInvalid])
expect(true).eql('We expected an error here')
} catch (e) {
toTest.watch$().subscribe(t => {
expect(t).eql(initialStore)
done()
})
}
})
it('emits undefined when key disappears', done => {
const initialStore = { a: 'value', b: [1, 2, 3], c: { d: 1, e: 2, f: 3 } }
const store = new Store(initialStore)
const remove: RemoveOperation = { op: PatchOp.REMOVE, path: '/c' }
let counter = 0
store.watch$('c', 'd').pipe(tap(() => counter++)).subscribe({
next: i => {
if (counter === 1) expect(i).eql(initialStore.c.d)
if (counter === 2) expect(i).eql(undefined)
if (counter === 2) done()
},
})
store.applyPatchDocument([remove])
})
it('when key returns, sub continues', done => {
const initialStore = { a: 'value', b: [1, 2, 3], c: { d: 1, e: 2, f: 3 } }
const store = new Store(initialStore)
const remove: RemoveOperation = { op: PatchOp.REMOVE, path: '/c' }
const reAdd: AddOperation<{ d: number }> = { op: PatchOp.ADD, path: '/c', value: { d: 1 } }
let counter = 0
store.watch$('c', 'd').pipe(tap(() => counter++)).subscribe({
next: i => {
if (counter === 1) expect(i).eql(initialStore.c.d)
if (counter === 2) expect(i).eql(undefined)
if (counter === 3) expect(i).eql(reAdd.value.d)
if (counter === 3) done()
},
})
store.applyPatchDocument([remove])
store.applyPatchDocument([reAdd])
})
it('watches a single property', () => {
scheduler.run( ({ expectObservable, cold }) => {
const initialStore = { a: 'value', b: [1, 2, 3], c: { d: 1, e: 2, f: 3 } }
const store = new Store(initialStore)
const toTest = store.watch$('b', 1)
const revise: ReplaceOperation<number> = { op: PatchOp.REPLACE, value: 4, path: '/b/1' }
const expectedStream = 'ab'
cold('-b').subscribe(_ => store.applyPatchDocument([revise]))
expectObservable(toTest).toBe(expectedStream, { a: initialStore.b[1], b: revise.value })
})
})
it('property only emits if it is updated', () => {
scheduler.run( ({ expectObservable, cold }) => {
const initialStore = { a: 'value', b: [1, 2, 3], c: { d: 1, e: 2, f: 3 } }
const store = new Store(initialStore)
const toTest = store.watch$('b', 0)
const revise: ReplaceOperation<number> = { op: PatchOp.REPLACE, value: 4, path: '/b/1' }
const expectedStream = 'a-'
cold('-b').subscribe(_ => store.applyPatchDocument([revise]))
expectObservable(toTest).toBe(expectedStream, { a: initialStore.b[0] })
})
})
it('only does the last updates', () => {
scheduler.run( ({ expectObservable, cold }) => {
const initialStore = { a: 'value', b: [1, 2, 3], c: { d: 1, e: 2, f: 3 } }
const store = new Store(initialStore)
const toTest = store.watch$('b', 1)
const revise1: ReplaceOperation<number> = { op: PatchOp.REPLACE, value: 4, path: '/b/1' }
const revise2: ReplaceOperation<number> = { op: PatchOp.REPLACE, value: 5, path: '/b/1' }
const expectedStream = 'ab'
cold('-b').subscribe(_ => store.applyPatchDocument([revise1, revise2]))
expectObservable(toTest).toBe(expectedStream, { a: initialStore.b[1], b: revise2.value })
})
})
it('emits multiple updates', () => {
scheduler.run( ({ expectObservable, cold }) => {
const initialStore = { a: 'value', b: [1, 2, 3], c: { d: 1, e: 2, f: 3 } }
const store = new Store(initialStore)
const toTest = store.watch$('b', 1)
const revise1: ReplaceOperation<number> = { op: PatchOp.REPLACE, value: 4, path: '/b/1' }
const revise2: ReplaceOperation<number> = { op: PatchOp.REPLACE, value: 5, path: '/b/1' }
const expectedStream = 'abc'
cold('-bc', { b: revise1, c: revise2 }).subscribe(i => {
store.applyPatchDocument([i])
})
expectObservable(toTest).toBe(expectedStream, { a: initialStore.b[1], b: revise1.value, c: revise2.value})
})
})
it('does a BIG store', () => {
scheduler.run( ({ expectObservable, cold }) => {
const fatty = require('./mocks/mock-data.json')
const store = new Store(fatty)
const toTest = store.watch$('kind')
const revise: ReplaceOperation<string> = { op: PatchOp.REPLACE, value: 'testing', path: '/kind' }
const expectedStream = 'ab'
cold('-b', { b: revise }).subscribe(i => {
store.applyPatchDocument([i])
})
expectObservable(toTest).toBe(expectedStream, { a: fatty['kind'], b: revise.value })
})
})
})

158
client/tests/temp-seq.test.ts
View File

@@ -1,158 +0,0 @@
import { expect } from 'chai'
import { PatchOp } from '../lib/patch-db'
import { TestScheduler } from 'rxjs/testing'
import { Result, SequenceStore } from '../lib/sequence-store'
import { concatMap, map } from 'rxjs/operators'
import { Store } from '../lib/store'
import { RemoveOperation } from 'fast-json-patch'
import 'chai-string'
type TestStore = { a: string, b: number[], c?: { [key: string]: number } }
describe('sequence store temp functionality', function () {
let scheduler: TestScheduler
beforeEach(() => {
scheduler = new TestScheduler( (actual, expected) => {
// console.log('actual', JSON.stringify(actual))
// console.log('expected', JSON.stringify(expected))
expect(actual).eql(expected)
})
})
it('applies a temp patch', done => {
const initialStore: TestStore = { a: 'value', b: [1, 2, 3], c: { d: 1, e: 2, f: 3 } }
const finalStore: TestStore = { a: 'value', b: [1, 2, 3], c: { g: 10 } }
const store = new Store(initialStore)
const toTest = new SequenceStore(store, 0)
toTest.update$({
patch: [{ op: PatchOp.REPLACE, value: finalStore.c, path: '/c' }],
expiredBy: 'expireMe',
}).subscribe(() => {
expect(toTest.store.peek).eql(finalStore)
expect(toTest.sequence).eql(0)
done()
})
})
it('applies multiple temp patches', done => {
const initialStore: TestStore = { a: 'value', b: [1, 2, 3], c: { d: 1, e: 2, f: 3 } }
const finalStore: TestStore = { a: 'value', b: [0], c: { g: 10 } }
const store = new Store(initialStore)
const toTest = new SequenceStore(store, 0)
const tempPatch1 = {
patch: [{ op: PatchOp.REPLACE, value: finalStore.c, path: '/c' }],
expiredBy: 'expireMe1',
}
const tempPatch2 = {
patch: [{ op: PatchOp.REPLACE, value: finalStore.b, path: '/b' }],
expiredBy: 'expireMe2',
}
toTest.update$(tempPatch1).pipe(concatMap(() =>
toTest.update$(tempPatch2),
)).subscribe(() => {
expect(toTest.store.peek).eql(finalStore)
expect(toTest.sequence).eql(0)
done()
})
})
it('expires a temp patch', done => {
const initialStore: TestStore = { a: 'value', b: [1, 2, 3], c: { d: 1, e: 2, f: 3 } }
const intermediaryStore: TestStore = { a: 'value', b: [1, 2, 3], c: { g: 10 } }
const finalStore: TestStore = { a: 'value', b: [0], c: { d: 1, e: 2, f: 3 } }
const store = new Store(initialStore)
const toTest = new SequenceStore(store, 0)
const tempPatch = {
patch: [{ op: PatchOp.REPLACE, value: intermediaryStore.c, path: '/c' }],
expiredBy: 'expireMe',
}
const expirePatch = {
id: 1,
patch: [{ op: PatchOp.REPLACE, value: finalStore.b, path: '/b' }],
expireId: 'expireMe',
}
toTest.update$(tempPatch).pipe(
map(() => expect(toTest.store.peek).eql(intermediaryStore)),
concatMap(() => toTest.update$(expirePatch)),
).subscribe(() => {
expect(toTest.store.peek).eql(finalStore)
expect(toTest.sequence).eql(1)
done()
})
})
it('expires a temp patch beneath a second temp patch', done => {
const initialStore : TestStore = { a: 'value' , b: [1, 2, 3], c: { d: 1, e: 2, f: 3 } }
const intermediaryStore : TestStore = { a: 'value' , b: [0] , c: { g: 10 } }
const finalStore : TestStore = { a: 'valueX', b: [0] , c: { d: 1, e: 2, f: 3 } }
const store = new Store(initialStore)
const toTest = new SequenceStore(store, 0)
const tempPatch = {
patch: [{ op: PatchOp.REPLACE, value: intermediaryStore.c, path: '/c' }],
expiredBy: 'expireMe',
}
const tempPatch2 = {
patch: [{ op: PatchOp.REPLACE, value: intermediaryStore.b, path: '/b' }],
expiredBy: 'expireMe2',
}
const expirePatch = {
id: 1,
patch: [{ op: PatchOp.REPLACE, value: finalStore.a, path: '/a' }],
expireId: 'expireMe',
}
toTest.update$(tempPatch).pipe(
concatMap(() => toTest.update$(tempPatch2)),
map(() => expect(toTest.store.peek).eql(intermediaryStore)),
concatMap(() => toTest.update$(expirePatch)),
).subscribe(() => {
expect(toTest.store.peek).eql(finalStore)
expect(toTest.sequence).eql(1)
done()
})
})
it('real patches are genuinely added beneath', done => {
const initialStore : TestStore = { a: 'value' , b: [1, 2, 3], c: { d: 1, e: 2, f: 3 } }
const intermediaryStore : TestStore = { a: 'value' , b: [1, 2, 3] }
const finalStore : TestStore = { a: 'value' , b: [1, 2, 3] }
const store = new Store(initialStore)
const toTest = new SequenceStore(store, 0)
const tempPatch = {
patch: [{ op: PatchOp.REMOVE, path: '/c' } as RemoveOperation],
expiredBy: 'expireMe',
}
// this patch would error if the above had been a real patch and not a temp
const realPatch = {
id: 1,
patch: [{ op: PatchOp.ADD, value: 4, path: '/c/g' }],
expireId: null,
}
toTest.update$(tempPatch).pipe(
map(res => expect(res).eql(Result.TEMP) && expect(toTest.store.peek).eql(intermediaryStore)),
concatMap(() => toTest.update$(realPatch)),
).subscribe(res => {
expect(res).eql(Result.REVISED)
expect(toTest.store.peek).eql(finalStore)
expect(toTest.sequence).eql(1)
done()
})
})
})