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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,94 @@ | ||
| //////////////////////////////////////////////////////////////////////////// | ||
| // | ||
| // Copyright 2024 Realm Inc. | ||
| // | ||
| // Licensed under the Apache License, Version 2.0 (the "License"); | ||
| // you may not use this file except in compliance with the License. | ||
| // You may obtain a copy of the License at | ||
| // | ||
| // http://www.apache.org/licenses/LICENSE-2.0 | ||
| // | ||
| // Unless required by applicable law or agreed to in writing, software | ||
| // distributed under the License is distributed on an "AS IS" BASIS, | ||
| // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | ||
| // See the License for the specific language governing permissions and | ||
| // limitations under the License. | ||
| // | ||
| //////////////////////////////////////////////////////////////////////////// | ||
|
|
||
| import { act } from "@testing-library/react-native"; | ||
| import { EstimateProgressNotificationCallback, ProgressRealmPromise, Realm } from "realm"; | ||
|
|
||
| /** | ||
| * Mocks {@link Realm.ProgressRealmPromise} with a custom | ||
| * promise completion and progress handler. | ||
| */ | ||
| export class MockedProgressRealmPromise extends Promise<Realm> implements ProgressRealmPromise { | ||
| private progressHandler?: (callback: EstimateProgressNotificationCallback) => void; | ||
|
|
||
| constructor( | ||
| callback: (resolve: (value: Realm) => void) => void, | ||
| options?: { | ||
| progress?: (callback: EstimateProgressNotificationCallback) => void; | ||
| }, | ||
| ) { | ||
| super(callback); | ||
| this.progressHandler = options?.progress; | ||
| } | ||
|
|
||
| get [Symbol.toStringTag]() { | ||
| return "MockedProgressRealmPromise"; | ||
| } | ||
|
|
||
| cancel = () => this; | ||
|
|
||
| progress = (callback: EstimateProgressNotificationCallback) => { | ||
| this.progressHandler?.call(this, callback); | ||
| return this; | ||
| }; | ||
| } | ||
|
|
||
| /** | ||
| * Mocks the Realm.open operation with a delayed, predictable Realm creation. | ||
| * If `options.progressValues` is specified, passes it through an equal interval to | ||
| * `Realm.open(...).progress(...)` callback. | ||
| * @returns Promise which resolves when the Realm is opened. | ||
| */ | ||
| export function mockRealmOpen( | ||
| options: { | ||
| /** Progress values which the `Realm.open(...).progress(...)` will receive in an equal interval. */ | ||
| progressValues?: number[]; | ||
| /** Duration of the Realm.open in milliseconds */ | ||
| delay?: number; | ||
| } = {}, | ||
| ): MockedProgressRealmPromise { | ||
| const { progressValues, delay = 100 } = options; | ||
| let progressIndex = 0; | ||
|
|
||
| const progressRealmPromise = new MockedProgressRealmPromise( | ||
| (resolve) => { | ||
| setTimeout(() => resolve(new Realm()), delay); | ||
| }, | ||
| { | ||
| progress: (callback) => { | ||
| if (progressValues instanceof Array) { | ||
| const sendProgress = () => { | ||
| // Uses act as this causes a component state update. | ||
| act(() => callback(progressValues[progressIndex])); | ||
| progressIndex++; | ||
|
|
||
| if (progressIndex <= progressValues.length) { | ||
| // Send the next progress update in equidistant time | ||
| setTimeout(sendProgress, delay / progressValues.length); | ||
| } | ||
| }; | ||
| sendProgress(); | ||
| } | ||
| }, | ||
| }, | ||
| ); | ||
|
|
||
| const delayedRealmOpen = jest.spyOn(Realm, "open"); | ||
| delayedRealmOpen.mockImplementation(() => progressRealmPromise); | ||
| return progressRealmPromise; | ||
| } |