feat: add kubernetes-test package with wait-for-pods functionality

packages/kubernetes-test/README.md

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+# kubernetes-test
+
+Kubernetes testing utilities with wait-for-pods and other helpers for integration tests.
+
+## Installation
+
+```bash
+npm install kubernetes-test
+```
+
+## Usage
+
+### Wait for Pods
+
+The `waitForPods` function allows you to wait for pods to become ready in a Kubernetes cluster.
+
+```typescript
+import { KubernetesClient } from 'kubernetesjs';
+import { waitForPods, waitForPodByName, waitForPodsWithLabel } from 'kubernetes-test';
+
+// Create a Kubernetes client
+const client = new KubernetesClient({
+  restEndpoint: 'http://localhost:8001', // kubectl proxy endpoint
+});
+
+// Wait for all pods with a specific label to be ready
+const result = await waitForPods(client, {
+  namespace: 'default',
+  labelSelector: 'app=my-app',
+  timeoutMs: 60000, // 1 minute timeout
+  pollIntervalMs: 2000, // Check every 2 seconds
+  onProgress: (progress) => {
+    console.log(`Ready: ${progress.ready}/${progress.total}`);
+  },
+});
+
+console.log(result.message); // "3/3 pods are ready"
+
+// Wait for a specific pod by name
+const podResult = await waitForPodByName(client, 'my-pod-name', {
+  namespace: 'default',
+  timeoutMs: 30000,
+});
+
+// Wait for pods with a specific label
+const labelResult = await waitForPodsWithLabel(client, 'app', 'nginx', {
+  namespace: 'production',
+  minReady: 2, // Wait for at least 2 pods to be ready
+});
+```
+
+### Options
+
+#### `WaitForPodsOptions`
+
+| Option | Type | Default | Description |
+|--------|------|---------|-------------|
+| `namespace` | `string` | `'default'` | Kubernetes namespace to query |
+| `labelSelector` | `string` | - | Label selector to filter pods (e.g., `'app=nginx'`) |
+| `fieldSelector` | `string` | - | Field selector to filter pods |
+| `timeoutMs` | `number` | `300000` | Maximum time to wait (5 minutes) |
+| `pollIntervalMs` | `number` | `2000` | Interval between status checks |
+| `minReady` | `number` | - | Minimum number of ready pods required |
+| `allReady` | `boolean` | `true` | Wait for all pods to be ready |
+| `onProgress` | `function` | - | Callback for progress updates |
+
+### Error Handling
+
+The library provides specific error types for different failure scenarios:
+
+```typescript
+import { 
+  waitForPods, 
+  WaitForPodsTimeoutError, 
+  WaitForPodsError 
+} from 'kubernetes-test';
+
+try {
+  await waitForPods(client, { labelSelector: 'app=my-app' });
+} catch (error) {
+  if (error instanceof WaitForPodsTimeoutError) {
+    console.log('Timeout! Progress:', error.progress);
+  } else if (error instanceof WaitForPodsError) {
+    console.log('Error:', error.message);
+  }
+}
+```
+
+## License
+
+MIT

packages/kubernetes-test/__tests__/wait-for-pods.test.ts

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+import {
+  WaitForPodsTimeoutError,
+  WaitForPodsError,
+  WaitForPodsOptions,
+  WaitForPodsProgress,
+  PodStatusInfo,
+} from '../src/types';
+
+describe('kubernetes-test types', () => {
+  describe('WaitForPodsTimeoutError', () => {
+    it('should create a timeout error with progress', () => {
+      const progress: WaitForPodsProgress = {
+        total: 3,
+        ready: 1,
+        pending: 2,
+        failed: 0,
+        pods: [],
+        elapsedMs: 5000,
+      };
+
+      const error = new WaitForPodsTimeoutError('Timeout waiting for pods', progress);
+
+      expect(error.name).toBe('WaitForPodsTimeoutError');
+      expect(error.message).toBe('Timeout waiting for pods');
+      expect(error.progress).toBe(progress);
+      expect(error.progress.ready).toBe(1);
+      expect(error.progress.total).toBe(3);
+    });
+  });
+
+  describe('WaitForPodsError', () => {
+    it('should create an error without progress', () => {
+      const error = new WaitForPodsError('Failed to list pods');
+
+      expect(error.name).toBe('WaitForPodsError');
+      expect(error.message).toBe('Failed to list pods');
+      expect(error.progress).toBeUndefined();
+    });
+
+    it('should create an error with progress', () => {
+      const progress: WaitForPodsProgress = {
+        total: 2,
+        ready: 0,
+        pending: 1,
+        failed: 1,
+        pods: [],
+        elapsedMs: 3000,
+      };
+
+      const error = new WaitForPodsError('Pods failed', progress);
+
+      expect(error.name).toBe('WaitForPodsError');
+      expect(error.message).toBe('Pods failed');
+      expect(error.progress).toBe(progress);
+    });
+  });
+
+  describe('Type definitions', () => {
+    it('should allow creating WaitForPodsOptions', () => {
+      const options: WaitForPodsOptions = {
+        namespace: 'test-namespace',
+        labelSelector: 'app=test',
+        timeoutMs: 60000,
+        pollIntervalMs: 1000,
+        minReady: 2,
+        allReady: false,
+        onProgress: (progress) => {
+          expect(progress.total).toBeGreaterThanOrEqual(0);
+        },
+      };
+
+      expect(options.namespace).toBe('test-namespace');
+      expect(options.labelSelector).toBe('app=test');
+      expect(options.timeoutMs).toBe(60000);
+    });
+
+    it('should allow creating PodStatusInfo', () => {
+      const podStatus: PodStatusInfo = {
+        name: 'test-pod',
+        namespace: 'default',
+        phase: 'Running',
+        ready: true,
+        conditions: [
+          {
+            type: 'Ready',
+            status: 'True',
+            reason: 'PodReady',
+            message: 'Pod is ready',
+          },
+        ],
+        containerStatuses: [
+          {
+            name: 'main',
+            ready: true,
+            restartCount: 0,
+            state: 'running',
+          },
+        ],
+      };
+
+      expect(podStatus.name).toBe('test-pod');
+      expect(podStatus.ready).toBe(true);
+      expect(podStatus.conditions).toHaveLength(1);
+      expect(podStatus.containerStatuses).toHaveLength(1);
+    });
+  });
+});

packages/kubernetes-test/jest.config.js

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+/** @type {import('ts-jest').JestConfigWithTsJest} */
+module.exports = {
+  preset: 'ts-jest',
+  testEnvironment: 'node',
+  transform: {
+    '^.+\\.tsx?$': [
+      'ts-jest',
+      {
+        babelConfig: false,
+        tsconfig: 'tsconfig.json',
+      },
+    ],
+  },
+  transformIgnorePatterns: [`/node_modules/*`],
+  testRegex: '(/__tests__/.*|(\\.|/)(test|spec))\\.(jsx?|tsx?)$',
+  moduleFileExtensions: ['ts', 'tsx', 'js', 'jsx', 'json', 'node'],
+  modulePathIgnorePatterns: ['dist/*'],
+};

packages/kubernetes-test/package.json

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+{
+  "name": "kubernetes-test",
+  "version": "0.1.0",
+  "author": "Constructive <developers@constructive.io>",
+  "description": "Kubernetes testing utilities with wait-for-pods and other helpers for integration tests",
+  "main": "index.js",
+  "module": "esm/index.js",
+  "types": "index.d.ts",
+  "homepage": "https://github.com/constructive-io/dev-utils",
+  "license": "MIT",
+  "publishConfig": {
+    "access": "public",
+    "directory": "dist"
+  },
+  "repository": {
+    "type": "git",
+    "url": "https://github.com/constructive-io/dev-utils"
+  },
+  "bugs": {
+    "url": "https://github.com/constructive-io/dev-utils/issues"
+  },
+  "scripts": {
+    "copy": "makage assets",
+    "clean": "makage clean",
+    "prepublishOnly": "npm run build",
+    "build": "makage build",
+    "lint": "eslint . --fix",
+    "test": "jest",
+    "test:watch": "jest --watch"
+  },
+  "keywords": [
+    "kubernetes",
+    "k8s",
+    "testing",
+    "integration-tests",
+    "pods",
+    "wait-for-pods",
+    "kubernetesjs",
+    "container",
+    "orchestration",
+    "devops",
+    "cloud-native"
+  ],
+  "dependencies": {
+    "kubernetesjs": "^0.7.6"
+  },
+  "devDependencies": {
+    "makage": "0.1.8"
+  }
+}

packages/kubernetes-test/src/index.ts

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+export * from './types';
+export * from './wait-for-pods';

packages/kubernetes-test/src/types.ts

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+import type { Pod, PodList, PodCondition } from 'kubernetesjs';
+
+export type { Pod, PodList, PodCondition };
+
+export interface WaitForPodsOptions {
+  namespace?: string;
+  labelSelector?: string;
+  fieldSelector?: string;
+  timeoutMs?: number;
+  pollIntervalMs?: number;
+  minReady?: number;
+  allReady?: boolean;
+  onProgress?: (status: WaitForPodsProgress) => void;
+}
+
+export interface WaitForPodsProgress {
+  total: number;
+  ready: number;
+  pending: number;
+  failed: number;
+  pods: PodStatusInfo[];
+  elapsedMs: number;
+}
+
+export interface PodStatusInfo {
+  name: string;
+  namespace: string;
+  phase: string;
+  ready: boolean;
+  conditions: PodConditionInfo[];
+  containerStatuses: ContainerStatusInfo[];
+}
+
+export interface PodConditionInfo {
+  type: string;
+  status: string;
+  reason?: string;
+  message?: string;
+}
+
+export interface ContainerStatusInfo {
+  name: string;
+  ready: boolean;
+  restartCount: number;
+  state: 'running' | 'waiting' | 'terminated' | 'unknown';
+  stateReason?: string;
+}
+
+export interface WaitForPodsResult {
+  success: boolean;
+  pods: PodStatusInfo[];
+  message: string;
+  elapsedMs: number;
+}
+
+export interface KubernetesTestClientOptions {
+  restEndpoint?: string;
+  namespace?: string;
+}
+
+export class WaitForPodsTimeoutError extends Error {
+  constructor(
+    message: string,
+    public readonly progress: WaitForPodsProgress
+  ) {
+    super(message);
+    this.name = 'WaitForPodsTimeoutError';
+  }
+}
+
+export class WaitForPodsError extends Error {
+  constructor(
+    message: string,
+    public readonly progress?: WaitForPodsProgress
+  ) {
+    super(message);
+    this.name = 'WaitForPodsError';
+  }
+}