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feat: Make lens-webpack-build cope long lasting processes, eg. watch
Co-authored-by: Janne Savolainen <janne.savolainen@live.fi> Signed-off-by: Mikko Aspiala <mikko.aspiala@gmail.com> Signed-off-by: Iku-turso <mikko.aspiala@gmail.com>
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@ -1,5 +1,5 @@
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import { getDi } from "./get-di";
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import { Exec, execInjectable } from "./exec.injectable";
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import { execInjectable } from "./exec.injectable";
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import asyncFn, { AsyncFnMock } from "@async-fn/jest";
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import { DoWebpackBuild, doWebpackBuildInjectable } from "./do-webpack-build";
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import { getPromiseStatus } from "@ogre-tools/test-utils";
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@ -7,16 +7,22 @@ import { LogSuccess, logSuccessInjectable } from "./log-success.injectable";
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import { LogWarning, logWarningInjectable } from "./log-warning.injectable";
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describe("do-webpack-build", () => {
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let execMock: AsyncFnMock<Exec>;
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let execMock: jest.Mock;
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let doWebpackBuild: DoWebpackBuild;
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let logSuccessMock: AsyncFnMock<LogSuccess>;
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let logWarningMock: AsyncFnMock<LogWarning>;
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let execResultStub: { stdout: { on: any }; stderr: { on: any }; on: any };
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beforeEach(() => {
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const di = getDi();
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execMock = asyncFn();
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di.override(execInjectable, () => execMock);
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execResultStub = {
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stdout: { on: jest.fn() },
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stderr: { on: jest.fn() },
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on: jest.fn(),
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};
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execMock = jest.fn().mockReturnValue(execResultStub);
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di.override(execInjectable, () => execMock as any);
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logSuccessMock = asyncFn();
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di.override(logSuccessInjectable, () => logSuccessMock);
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logWarningMock = asyncFn();
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@ -36,58 +42,32 @@ describe("do-webpack-build", () => {
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expect(execMock).toHaveBeenCalledWith("webpack");
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});
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it("does not resolve yet", async () => {
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it("data in stdout logs as success", () => {
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const listeners = execResultStub.stdout.on.mock.calls;
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expect(listeners).toEqual([["data", logSuccessMock]]);
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});
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it("data in stderr logs as warning", () => {
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const listeners = execResultStub.stderr.on.mock.calls;
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expect(listeners).toEqual([["data", logWarningMock]]);
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});
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it("script is not done yet", async () => {
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const promiseStatus = await getPromiseStatus(actualPromise);
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expect(promiseStatus.fulfilled).toBe(false);
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});
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describe("when webpack resolves with stdout", () => {
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beforeEach(async () => {
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await execMock.resolve({ stdout: "some-stdout", stderr: "" });
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});
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it("when execution of webpack exits, script is done", async () => {
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const [[eventName, finishWebpack]] = execResultStub.on.mock.calls;
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it("logs the stdout", () => {
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expect(logSuccessMock).toHaveBeenCalledWith("some-stdout");
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});
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eventName === "exit" && finishWebpack();
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it("script is done", async () => {
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const promiseStatus = await getPromiseStatus(actualPromise);
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expect(promiseStatus.fulfilled).toBe(true);
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});
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});
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describe("when webpack resolves with stderr", () => {
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beforeEach(() => {
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execMock.resolve({ stdout: "", stderr: "some-stderr" });
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});
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it("does not log success", () => {
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actualPromise.catch(() => {});
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expect(logSuccessMock).not.toHaveBeenCalled();
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});
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it("logs a warning", () => {
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expect(logWarningMock).toBeCalledWith("Warning while executing \"webpack\": some-stderr");
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});
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});
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describe("when webpack rejects", () => {
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beforeEach(async () => {
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execMock.reject(new Error("some-error"));
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});
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it("does not log success", () => {
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actualPromise.catch(() => {});
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expect(logSuccessMock).not.toHaveBeenCalled();
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});
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it("throws", () => {
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return expect(actualPromise).rejects.toThrow("some-error");
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});
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});
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});
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});
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@ -13,18 +13,15 @@ export const doWebpackBuildInjectable = getInjectable({
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const logSuccess = di.inject(logSuccessInjectable);
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const logWarning = di.inject(logWarningInjectable);
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const execWithResultHandling = async (command: string) => {
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const { stdout, stderr } = await exec(command);
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if (stderr) {
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logWarning(`Warning while executing "${command}": ${stderr}`);
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} else if (stdout) {
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logSuccess(stdout);
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}
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};
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return async () => {
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await execWithResultHandling("webpack");
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const execResult = exec("webpack");
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execResult.stdout?.on("data", logSuccess);
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execResult.stderr?.on("data", logWarning);
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return new Promise<void>((resolve) => {
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execResult.on("exit", resolve);
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});
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};
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},
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});
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@ -1,12 +1,9 @@
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import { getInjectable } from "@ogre-tools/injectable";
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import { exec } from "child_process";
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import { promisify } from "util";
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const promisifiedExec = promisify(exec);
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export type Exec = typeof promisifiedExec;
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export type Exec = typeof exec;
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export const execInjectable = getInjectable({
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id: "exec",
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instantiate: () => promisifiedExec,
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instantiate: () => exec,
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});
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