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Merged
merged 2 commits into from
Feb 27, 2025
Merged

Add testing for /readyz #2277

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0ff211d
Add testing for /readyz
brendandburns Feb 27, 2025
c11fd97
Address comment.
brendandburns Feb 27, 2025
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4 changes: 2 additions & 2 deletions src/health.ts
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Original file line number Diff line number Diff line change
Expand Up @@ -48,8 +48,8 @@ export class Health {
return this.healthz(opts);
}
return false;
} catch (err: unknown) {
if (err instanceof Error && err.name === 'AbortError') {
} catch (err: any) {
if (err.name === 'AbortError') {
throw err;
}
throw new Error('Error occurred in health request');
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286 changes: 149 additions & 137 deletions src/health_test.ts
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Expand Up @@ -4,145 +4,157 @@ import nock from 'nock';
import { KubeConfig } from './config.js';
import { Health } from './health.js';
import { Cluster, User } from './config_types.js';
import { RequestOptions } from 'node:https';

describe('Health', () => {
describe('livez', () => {
it('should throw an error if no current active cluster', async () => {
const kc = new KubeConfig();
const health = new Health(kc);
await rejects(health.livez({}), { message: 'No currently active cluster' });
});

it('should return true if /livez returns with status 200', async () => {
const kc = new KubeConfig();
const cluster = {
name: 'foo',
server: 'https://server.com',
} as Cluster;

const user = {
name: 'my-user',
password: 'some-password',
} as User;
kc.loadFromClusterAndUser(cluster, user);

const scope = nock('https://server.com').get('/livez').reply(200);
const health = new Health(kc);

const r = await health.livez({});
strictEqual(r, true);
scope.done();
});

it('should return false if /livez returns with status 500', async () => {
const kc = new KubeConfig();
const cluster = {
name: 'foo',
server: 'https://server.com',
} as Cluster;

const user = {
name: 'my-user',
password: 'some-password',
} as User;
kc.loadFromClusterAndUser(cluster, user);

const scope = nock('https://server.com').get('/livez').reply(500);
const health = new Health(kc);

const r = await health.livez({});
strictEqual(r, false);
scope.done();
});

it('should return true if /livez returns status 404 and /healthz returns status 200', async () => {
const kc = new KubeConfig();
const cluster = {
name: 'foo',
server: 'https://server.com',
} as Cluster;

const user = {
name: 'my-user',
password: 'some-password',
} as User;
kc.loadFromClusterAndUser(cluster, user);

const scope = nock('https://server.com');
scope.get('/livez').reply(404);
scope.get('/healthz').reply(200);
const health = new Health(kc);

const r = await health.livez({});
strictEqual(r, true);
scope.done();
});

it('should return false if /livez returns status 404 and /healthz returns status 500', async () => {
const kc = new KubeConfig();
const cluster = {
name: 'foo',
server: 'https://server.com',
} as Cluster;

const user = {
name: 'my-user',
password: 'some-password',
} as User;
kc.loadFromClusterAndUser(cluster, user);

const scope = nock('https://server.com');
scope.get('/livez').reply(404);
scope.get('/healthz').reply(500);
const health = new Health(kc);

const r = await health.livez({});
strictEqual(r, false);
scope.done();
});

it('should return true if both /livez and /healthz return status 404', async () => {
const kc = new KubeConfig();
const cluster = {
name: 'foo',
server: 'https://server.com',
} as Cluster;

const user = {
name: 'my-user',
password: 'some-password',
} as User;
kc.loadFromClusterAndUser(cluster, user);

const scope = nock('https://server.com');
scope.get('/livez').reply(404);
scope.get('/healthz').reply(200);
const health = new Health(kc);

const r = await health.livez({});
strictEqual(r, true);
scope.done();
});

it('should throw an error when fetch throws an error', async () => {
const kc = new KubeConfig();
const cluster = {
name: 'foo',
server: 'https://server.com',
} as Cluster;

const user = {
name: 'my-user',
password: 'some-password',
} as User;
kc.loadFromClusterAndUser(cluster, user);

const scope = nock('https://server.com');
scope.get('/livez').replyWithError(new Error('an error'));
const health = new Health(kc);

await rejects(health.livez({}), { message: 'Error occurred in health request' });
scope.done();
[
{
path: '/livez',
method: async (health: Health, opts: RequestOptions) => health.livez(opts),
},
{
path: '/readyz',
method: async (health: Health, opts: RequestOptions) => health.readyz(opts),
},
].forEach((test) => {
describe(test.path, () => {
it('should throw an error if no current active cluster', async () => {
const kc = new KubeConfig();
const health = new Health(kc);
await rejects(test.method(health, {}), { message: 'No currently active cluster' });
});

it(`should return true if ${test.path} returns with status 200`, async () => {
const kc = new KubeConfig();
const cluster = {
name: 'foo',
server: 'https://server.com',
} as Cluster;

const user = {
name: 'my-user',
password: 'some-password',
} as User;
kc.loadFromClusterAndUser(cluster, user);

const scope = nock('https://server.com').get(test.path).reply(200);
const health = new Health(kc);

const r = await test.method(health, {});
strictEqual(r, true);
scope.done();
});

it(`should return false if ${test.path} returns with status 500`, async () => {
const kc = new KubeConfig();
const cluster = {
name: 'foo',
server: 'https://server.com',
} as Cluster;

const user = {
name: 'my-user',
password: 'some-password',
} as User;
kc.loadFromClusterAndUser(cluster, user);

const scope = nock('https://server.com').get(test.path).reply(500);
const health = new Health(kc);

const r = await test.method(health, {});
strictEqual(r, false);
scope.done();
});

it(`should return true if ${test.path} returns status 404 and /healthz returns status 200`, async () => {
const kc = new KubeConfig();
const cluster = {
name: 'foo',
server: 'https://server.com',
} as Cluster;

const user = {
name: 'my-user',
password: 'some-password',
} as User;
kc.loadFromClusterAndUser(cluster, user);

const scope = nock('https://server.com');
scope.get(test.path).reply(404);
scope.get('/healthz').reply(200);
const health = new Health(kc);

const r = await test.method(health, {});
strictEqual(r, true);
scope.done();
});

it(`should return false if ${test.path} returns status 404 and /healthz returns status 500`, async () => {
const kc = new KubeConfig();
const cluster = {
name: 'foo',
server: 'https://server.com',
} as Cluster;

const user = {
name: 'my-user',
password: 'some-password',
} as User;
kc.loadFromClusterAndUser(cluster, user);

const scope = nock('https://server.com');
scope.get(test.path).reply(404);
scope.get('/healthz').reply(500);
const health = new Health(kc);

const r = await test.method(health, {});
strictEqual(r, false);
scope.done();
});

it(`should return true if both ${test.path} and /healthz return status 404`, async () => {
const kc = new KubeConfig();
const cluster = {
name: 'foo',
server: 'https://server.com',
} as Cluster;

const user = {
name: 'my-user',
password: 'some-password',
} as User;
kc.loadFromClusterAndUser(cluster, user);

const scope = nock('https://server.com');
scope.get(test.path).reply(404);
scope.get('/healthz').reply(404);
const health = new Health(kc);

const r = await test.method(health, {});
strictEqual(r, true);
scope.done();
});

it('should throw an error when fetch throws an error', async () => {
const kc = new KubeConfig();
const cluster = {
name: 'foo',
server: 'https://server.com',
} as Cluster;

const user = {
name: 'my-user',
password: 'some-password',
} as User;
kc.loadFromClusterAndUser(cluster, user);

const scope = nock('https://server.com');
scope.get(test.path).replyWithError(new Error('an error'));
const health = new Health(kc);

await rejects(test.method(health, {}), { message: 'Error occurred in health request' });
scope.done();
});
});
});
});