Create shards.cs-e2e.ts (#1406)

src/test/chain-simulator/shards.cs-e2e.ts

@@ -0,0 +1,75 @@
+import axios from 'axios';
+import { config } from "./config/env.config";
+import { ChainSimulatorUtils } from "./utils/test.utils";
+
+describe('Shards e2e tests with chain simulator', () => {
+  beforeAll(async () => {
+    await ChainSimulatorUtils.waitForEpoch(2);
+  });
+
+  describe('GET /shards', () => {
+    it('should return status code 200 and a list of shards', async () => {
+      const response = await axios.get(`${config.apiServiceUrl}/shards`);
+
+      expect(response.status).toBe(200);
+      expect(response.data).toBeInstanceOf(Array);
+    });
+  });
+  describe('GET /shards with pagination', () => {
+    it('should return status code 200 and paginated shards with default values', async () => {
+      const response = await axios.get(`${config.apiServiceUrl}/shards`);
+      expect(response.status).toBe(200);
+      expect(response.data).toBeInstanceOf(Array);
+      expect(response.data.length).toBe(4);
+    });
+
+    it('should return paginated shards with custom size', async () => {
+      const size = 2;
+      const response = await axios.get(`${config.apiServiceUrl}/shards?size=${size}`);
+      expect(response.status).toBe(200);
+      expect(response.data).toBeInstanceOf(Array);
+      expect(response.data.length).toBe(size);
+    });
+
+    it('should return paginated shards with custom from', async () => {
+      const from = 1;
+      const response = await axios.get(`${config.apiServiceUrl}/shards?from=${from}`);
+      expect(response.status).toBe(200);
+      expect(response.data).toBeInstanceOf(Array);
+      expect(response.data.length).toBe(3);
+    });
+
+    it('should return paginated shards with both from and size', async () => {
+      const from = 1;
+      const size = 2;
+      const response = await axios.get(`${config.apiServiceUrl}/shards?from=${from}&size=${size}`);
+      expect(response.status).toBe(200);
+      expect(response.data).toBeInstanceOf(Array);
+      expect(response.data.length).toBe(size);
+    });
+
+    it('should validate shard structure and data', async () => {
+      const response = await axios.get(`${config.apiServiceUrl}/shards`);
+      const shards = response.data;
+
+      for (const shard of shards) {
+        expect(shard).toHaveProperty('shard');
+        expect(shard).toHaveProperty('validators');
+        expect(shard).toHaveProperty('activeValidators');
+        expect(typeof shard.shard).toBe('number');
+        expect(typeof shard.validators).toBe('number');
+        expect(typeof shard.activeValidators).toBe('number');
+      }
+    });
+
+    it('should contain metachain shard (4294967295)', async () => {
+      const response = await axios.get(`${config.apiServiceUrl}/shards`);
+      const shards = response.data;
+      const metachainShard = shards.find((shard: { shard: number }) => shard.shard === 4294967295);
+
+      expect(metachainShard).toBeDefined();
+      expect(metachainShard?.validators).toBeGreaterThanOrEqual(1);
+      expect(metachainShard?.activeValidators).toBeGreaterThanOrEqual(1);
+    });
+  });
+});