[kbn-es] add basic integration tests for exit code/promise handling (e…

…lastic#17600) (elastic#17783)

packages/kbn-es/src/cluster.js

@@ -176,7 +176,7 @@ exports.Cluster = class Cluster {
       this._process.once('exit', code => {
         // JVM exits with 143 on SIGTERM and 130 on SIGINT, dont' treat them as errors
         if (code > 0 && !(code === 143 || code === 130)) {
-          reject(createCliError(`ES exitted with code ${code}`));
+          reject(createCliError(`ES exited with code ${code}`));
         } else {
           resolve();
         }

packages/kbn-es/src/integration_tests/__fixtures__/es_bin.js

@@ -0,0 +1,9 @@
+#!/usr/bin/env node
+
+const { exitCode, start } = JSON.parse(process.argv[2]);
+
+if (start) {
+  console.log('started');
+}
+
+process.exitCode = exitCode;

packages/kbn-es/src/integration_tests/cluster.test.js

@@ -0,0 +1,330 @@
+const { createToolingLog } = require('@kbn/dev-utils');
+const execa = require('execa');
+const { Cluster } = require('../cluster');
+const {
+  installSource,
+  installSnapshot,
+  installArchive,
+} = require('../install');
+
+jest.mock('../install', () => ({
+  installSource: jest.fn(),
+  installSnapshot: jest.fn(),
+  installArchive: jest.fn(),
+}));
+
+jest.mock('execa', () => jest.fn());
+
+const log = createToolingLog('verbose');
+log.onData = jest.fn();
+log.on('data', log.onData);
+
+function sleep(ms) {
+  return new Promise(resolve => setTimeout(resolve, ms));
+}
+
+async function ensureNoResolve(promise) {
+  await Promise.race([
+    sleep(100),
+    promise.then(() => {
+      throw new Error('promise was not supposed to resolve');
+    }),
+  ]);
+}
+
+async function ensureResolve(promise) {
+  return await Promise.race([
+    promise,
+    sleep(100).then(() => {
+      throw new Error(
+        'promise was supposed to resolve with installSource() resolution'
+      );
+    }),
+  ]);
+}
+
+function mockEsBin({ exitCode, start }) {
+  execa.mockImplementationOnce((cmd, args, options) =>
+    require.requireActual('execa')(
+      process.execPath,
+      [
+        require.resolve('./__fixtures__/es_bin.js'),
+        JSON.stringify({
+          exitCode,
+          start,
+        }),
+      ],
+      options
+    )
+  );
+}
+
+beforeEach(() => {
+  jest.resetAllMocks();
+});
+
+describe('#installSource()', () => {
+  it('awaits installSource() promise and returns { installPath }', async () => {
+    let resolveInstallSource;
+    installSource.mockImplementationOnce(
+      () =>
+        new Promise(resolve => {
+          resolveInstallSource = () => {
+            resolve({ installPath: 'foo' });
+          };
+        })
+    );
+
+    const cluster = new Cluster(log);
+    const promise = cluster.installSource();
+    await ensureNoResolve(promise);
+    resolveInstallSource();
+    await expect(ensureResolve(promise)).resolves.toEqual({
+      installPath: 'foo',
+    });
+  });
+
+  it('passes through all options+log to installSource()', async () => {
+    installSource.mockResolvedValue({});
+    const cluster = new Cluster(log);
+    await cluster.installSource({ foo: 'bar' });
+    expect(installSource).toHaveBeenCalledTimes(1);
+    expect(installSource).toHaveBeenCalledWith({
+      log,
+      foo: 'bar',
+    });
+  });
+
+  it('rejects if installSource() rejects', async () => {
+    installSource.mockRejectedValue(new Error('foo'));
+    const cluster = new Cluster(log);
+    await expect(cluster.installSource()).rejects.toThrowError('foo');
+  });
+});
+
+describe('#installSnapshot()', () => {
+  it('awaits installSnapshot() promise and returns { installPath }', async () => {
+    let resolveInstallSnapshot;
+    installSnapshot.mockImplementationOnce(
+      () =>
+        new Promise(resolve => {
+          resolveInstallSnapshot = () => {
+            resolve({ installPath: 'foo' });
+          };
+        })
+    );
+
+    const cluster = new Cluster(log);
+    const promise = cluster.installSnapshot();
+    await ensureNoResolve(promise);
+    resolveInstallSnapshot();
+    await expect(ensureResolve(promise)).resolves.toEqual({
+      installPath: 'foo',
+    });
+  });
+
+  it('passes through all options+log to installSnapshot()', async () => {
+    installSnapshot.mockResolvedValue({});
+    const cluster = new Cluster(log);
+    await cluster.installSnapshot({ foo: 'bar' });
+    expect(installSnapshot).toHaveBeenCalledTimes(1);
+    expect(installSnapshot).toHaveBeenCalledWith({
+      log,
+      foo: 'bar',
+    });
+  });
+
+  it('rejects if installSnapshot() rejects', async () => {
+    installSnapshot.mockRejectedValue(new Error('foo'));
+    const cluster = new Cluster(log);
+    await expect(cluster.installSnapshot()).rejects.toThrowError('foo');
+  });
+});
+
+describe('#installArchive(path)', () => {
+  it('awaits installArchive() promise and returns { installPath }', async () => {
+    let resolveInstallArchive;
+    installArchive.mockImplementationOnce(
+      () =>
+        new Promise(resolve => {
+          resolveInstallArchive = () => {
+            resolve({ installPath: 'foo' });
+          };
+        })
+    );
+
+    const cluster = new Cluster(log);
+    const promise = cluster.installArchive();
+    await ensureNoResolve(promise);
+    resolveInstallArchive();
+    await expect(ensureResolve(promise)).resolves.toEqual({
+      installPath: 'foo',
+    });
+  });
+
+  it('passes through path and all options+log to installArchive()', async () => {
+    installArchive.mockResolvedValue({});
+    const cluster = new Cluster(log);
+    await cluster.installArchive('path', { foo: 'bar' });
+    expect(installArchive).toHaveBeenCalledTimes(1);
+    expect(installArchive).toHaveBeenCalledWith('path', {
+      log,
+      foo: 'bar',
+    });
+  });
+
+  it('rejects if installArchive() rejects', async () => {
+    installArchive.mockRejectedValue(new Error('foo'));
+    const cluster = new Cluster(log);
+    await expect(cluster.installArchive()).rejects.toThrowError('foo');
+  });
+});
+
+describe('#start(installPath)', () => {
+  it('rejects when bin/elasticsearch exists with 0 before starting', async () => {
+    mockEsBin({ exitCode: 0, start: false });
+
+    await expect(new Cluster(log).start()).rejects.toThrowError(
+      'ES exited without starting'
+    );
+  });
+
+  it('rejects when bin/elasticsearch exists with 143 before starting', async () => {
+    mockEsBin({ exitCode: 143, start: false });
+
+    await expect(new Cluster(log).start()).rejects.toThrowError(
+      'ES exited without starting'
+    );
+  });
+
+  it('rejects when bin/elasticsearch exists with 130 before starting', async () => {
+    mockEsBin({ exitCode: 130, start: false });
+
+    await expect(new Cluster(log).start()).rejects.toThrowError(
+      'ES exited without starting'
+    );
+  });
+
+  it('rejects when bin/elasticsearch exists with 1 before starting', async () => {
+    mockEsBin({ exitCode: 1, start: false });
+
+    await expect(new Cluster(log).start()).rejects.toThrowError(
+      'ES exited with code 1'
+    );
+  });
+
+  it('resolves when bin/elasticsearch logs "started"', async () => {
+    mockEsBin({ start: true });
+
+    await new Cluster(log).start();
+  });
+
+  it('rejects if #start() was called previously', async () => {
+    mockEsBin({ start: true });
+
+    const cluster = new Cluster(log);
+    await cluster.start();
+    await expect(cluster.start()).rejects.toThrowError(
+      'ES has already been started'
+    );
+  });
+
+  it('rejects if #run() was called previously', async () => {
+    mockEsBin({ start: true });
+
+    const cluster = new Cluster(log);
+    await cluster.run();
+    await expect(cluster.start()).rejects.toThrowError(
+      'ES has already been started'
+    );
+  });
+});
+
+describe('#run()', () => {
+  it('resolves when bin/elasticsearch exists with 0', async () => {
+    mockEsBin({ exitCode: 0 });
+
+    await new Cluster(log).run();
+  });
+
+  it('resolves when bin/elasticsearch exists with 143', async () => {
+    mockEsBin({ exitCode: 143 });
+
+    await new Cluster(log).run();
+  });
+
+  it('resolves when bin/elasticsearch exists with 130', async () => {
+    mockEsBin({ exitCode: 130 });
+
+    await new Cluster(log).run();
+  });
+
+  it('rejects when bin/elasticsearch exists with 1', async () => {
+    mockEsBin({ exitCode: 1 });
+
+    await expect(new Cluster(log).run()).rejects.toThrowError(
+      'ES exited with code 1'
+    );
+  });
+
+  it('rejects if #start() was called previously', async () => {
+    mockEsBin({ exitCode: 0, start: true });
+
+    const cluster = new Cluster(log);
+    await cluster.start();
+    await expect(cluster.run()).rejects.toThrowError(
+      'ES has already been started'
+    );
+  });
+
+  it('rejects if #run() was called previously', async () => {
+    mockEsBin({ exitCode: 0 });
+
+    const cluster = new Cluster(log);
+    await cluster.run();
+    await expect(cluster.run()).rejects.toThrowError(
+      'ES has already been started'
+    );
+  });
+});
+
+describe('#stop()', () => {
+  it('rejects if #run() or #start() was not called', async () => {
+    const cluster = new Cluster(log);
+    await expect(cluster.stop()).rejects.toThrowError(
+      'ES has not been started'
+    );
+  });
+
+  it('resolves when ES exits with 0', async () => {
+    mockEsBin({ exitCode: 0, start: true });
+
+    const cluster = new Cluster(log);
+    await cluster.start();
+    await cluster.stop();
+  });
+
+  it('resolves when ES exits with 143', async () => {
+    mockEsBin({ exitCode: 143, start: true });
+
+    const cluster = new Cluster(log);
+    await cluster.start();
+    await cluster.stop();
+  });
+
+  it('resolves when ES exits with 130', async () => {
+    mockEsBin({ exitCode: 130, start: true });
+
+    const cluster = new Cluster(log);
+    await cluster.start();
+    await cluster.stop();
+  });
+
+  it('rejects when ES exits with 1', async () => {
+    mockEsBin({ exitCode: 1, start: true });
+
+    const cluster = new Cluster(log);
+    await expect(cluster.run()).rejects.toThrowError('ES exited with code 1');
+    await expect(cluster.stop()).rejects.toThrowError('ES exited with code 1');
+  });
+});