feat: Add client-side SDK plugin support.

packages/sdk/browser/__tests__/BrowserClient.mocks.ts

@@ -0,0 +1,117 @@
+import {
+  EventSourceCapabilities,
+  EventSourceInitDict,
+  Platform,
+  PlatformData,
+  Requests,
+  SdkData,
+} from '@launchdarkly/js-client-sdk-common';
+
+import { BrowserOptions } from '../src/options';
+import { MockHasher } from './MockHasher';
+
+function mockResponse(value: string, statusCode: number) {
+  const response: Response = {
+    // @ts-ignore
+    headers: {
+      // @ts-ignore
+      get: jest.fn(),
+      // @ts-ignore
+      keys: jest.fn(),
+      // @ts-ignore
+      values: jest.fn(),
+      // @ts-ignore
+      entries: jest.fn(),
+      // @ts-ignore
+      has: jest.fn(),
+    },
+    status: statusCode,
+    text: () => Promise.resolve(value),
+    json: () => Promise.resolve(JSON.parse(value)),
+  };
+  return Promise.resolve(response);
+}
+
+function mockFetch(value: string, statusCode: number = 200) {
+  const f = jest.fn();
+  // @ts-ignore
+  f.mockResolvedValue(mockResponse(value, statusCode));
+  return f;
+}
+
+export function makeRequests(): Requests {
+  return {
+    // @ts-ignore
+    fetch: jest.fn((url: string, _options: any) => {
+      if (url.includes('/sdk/goals/')) {
+        return mockFetch(
+          JSON.stringify([
+            {
+              key: 'pageview',
+              kind: 'pageview',
+              urls: [{ kind: 'exact', url: 'http://browserclientintegration.com' }],
+            },
+            {
+              key: 'click',
+              kind: 'click',
+              selector: '.button',
+              urls: [{ kind: 'exact', url: 'http://browserclientintegration.com' }],
+            },
+          ]),
+          200,
+        )();
+      }
+      return mockFetch('{ "flagA": true }', 200)();
+    }),
+    // @ts-ignore
+    createEventSource(_url: string, _eventSourceInitDict: EventSourceInitDict): EventSource {
+      throw new Error('Function not implemented.');
+    },
+    getEventSourceCapabilities(): EventSourceCapabilities {
+      return {
+        readTimeout: false,
+        headers: false,
+        customMethod: false,
+      };
+    },
+  };
+}
+
+export function makeBasicPlatform(options?: BrowserOptions): Platform {
+  return {
+    requests: makeRequests(),
+    info: {
+      platformData(): PlatformData {
+        return {
+          name: 'browser',
+        };
+      },
+      sdkData(): SdkData {
+        const sdkData: SdkData = {
+          name: 'browser-sdk',
+          version: '1.0.0',
+          userAgentBase: 'MockBrowserSDK',
+        };
+        if (options?.wrapperName) {
+          sdkData.wrapperName = options.wrapperName;
+        }
+        if (options?.wrapperVersion) {
+          sdkData.wrapperVersion = options.wrapperVersion;
+        }
+        return sdkData;
+      },
+    },
+    crypto: {
+      createHash: () => new MockHasher(),
+      randomUUID: () => '123',
+    },
+    storage: {
+      get: async (_key: string) => null,
+      set: async (_key: string, _value: string) => {},
+      clear: async (_key: string) => {},
+    },
+    encoding: {
+      btoa: (str: string) => str,
+    },
+  } as Platform;
+}