Add vitest and unit tests for existing functionality

.github/workflows/test.yml

@@ -0,0 +1,19 @@
+name: Tests
+on:
+  push:
+    branches:
+      - "main"
+  pull_request:
+    branches:
+      - "*"
+jobs:
+  unit:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+      - name: Use Node.js
+        uses: actions/setup-node@v4
+        with:
+          node-version: '20.x'
+      - run: yarn install --frozen-lockfile
+      - run: yarn run test:coverage

.gitignore

@@ -1,3 +1,4 @@
 *.DS_Store
 node_modules/
 dist/
+coverage/

.prettierignore

@@ -1,11 +1,11 @@
 .github/**
 demos/**
 dist/**
+coverage/**
 lib/wasm_exec.js
 package-lock.json
 package.json
 README.md
-test/**
 tsconfig.json
 tslint.json
 webpack.config.js

lib/api/createRpc.test.ts

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+import { Lightning } from '@lightninglabs/lnc-core/dist/types/proto/lnrpc';
+import { WalletKit } from '@lightninglabs/lnc-core/dist/types/proto/walletrpc';
+import { beforeEach, describe, expect, it, Mocked, vi } from 'vitest';
+import LNC from '../lnc';
+import { createRpc } from './createRpc';
+
+// Mock the external dependency
+vi.mock('@lightninglabs/lnc-core', () => ({
+    subscriptionMethods: [
+        'lnrpc.Lightning.SubscribeInvoices',
+        'lnrpc.Lightning.SubscribeChannelEvents',
+        'lnrpc.Lightning.ChannelAcceptor'
+    ]
+}));
+
+// Create the mocked LNC instance
+const mockLnc = {
+    request: vi.fn(),
+    subscribe: vi.fn()
+} as unknown as Mocked<LNC>;
+
+describe('RPC Creation', () => {
+    beforeEach(() => {
+        vi.clearAllMocks();
+    });
+
+    describe('createRpc function', () => {
+        it('should create a proxy object', () => {
+            const packageName = 'lnrpc.Lightning';
+            const rpc = createRpc(packageName, mockLnc);
+
+            expect(typeof rpc).toBe('object');
+            expect(rpc).toBeInstanceOf(Object);
+        });
+    });
+
+    describe('Proxy behavior', () => {
+        const packageName = 'lnrpc.Lightning';
+        let rpc: Lightning;
+
+        beforeEach(() => {
+            rpc = createRpc(packageName, mockLnc);
+        });
+
+        describe('Method name capitalization', () => {
+            it('should capitalize method names correctly', () => {
+                // Access a property to trigger the proxy get handler
+                const method = rpc.getInfo;
+
+                expect(typeof method).toBe('function');
+
+                // Call the method to verify capitalization
+                const request = { includeChannels: true };
+                method(request);
+
+                expect(mockLnc.request).toHaveBeenCalledWith(
+                    'lnrpc.Lightning.GetInfo',
+                    request
+                );
+            });
+
+            it('should handle method names with numbers', () => {
+                const method = (rpc as any).method123;
+
+                const request = {};
+                method(request);
+
+                expect(mockLnc.request).toHaveBeenCalledWith(
+                    'lnrpc.Lightning.Method123',
+                    request
+                );
+            });
+        });
+
+        describe('Unary RPC methods', () => {
+            it('should create async functions for non-subscription methods', async () => {
+                const method = rpc.getInfo;
+                expect(typeof method).toBe('function');
+
+                const mockResponse = { identityPubkey: 'test' };
+                mockLnc.request.mockResolvedValue(mockResponse);
+
+                const request = {};
+                const result = await method(request);
+
+                expect(result).toBe(mockResponse);
+                expect(mockLnc.request).toHaveBeenCalledWith(
+                    'lnrpc.Lightning.GetInfo',
+                    request
+                );
+            });
+
+            it('should handle empty request objects', async () => {
+                const method = rpc.getInfo;
+                const request = {};
+
+                mockLnc.request.mockResolvedValue({});
+
+                await method(request);
+
+                expect(mockLnc.request).toHaveBeenCalledWith(
+                    'lnrpc.Lightning.GetInfo',
+                    request
+                );
+            });
+        });
+
+        describe('Streaming RPC methods (subscriptions)', () => {
+            it('should create subscription functions for streaming methods', () => {
+                // Test with SubscribeInvoices which is in subscriptionMethods
+                const method = rpc.subscribeInvoices;
+
+                expect(typeof method).toBe('function');
+
+                const request = { addIndex: '1' };
+                const callback = vi.fn();
+                const errCallback = vi.fn();
+
+                method(request, callback, errCallback);
+
+                expect(mockLnc.subscribe).toHaveBeenCalledWith(
+                    'lnrpc.Lightning.SubscribeInvoices',
+                    request,
+                    callback,
+                    errCallback
+                );
+            });
+
+            it('should create subscription functions for ChannelAcceptor', () => {
+                const method = rpc.channelAcceptor;
+
+                expect(typeof method).toBe('function');
+
+                const request = {};
+                const callback = vi.fn();
+                const errCallback = vi.fn();
+
+                method(request, callback, errCallback);
+
+                expect(mockLnc.subscribe).toHaveBeenCalledWith(
+                    'lnrpc.Lightning.ChannelAcceptor',
+                    request,
+                    callback,
+                    errCallback
+                );
+            });
+        });
+
+        describe('Method classification', () => {
+            it('should handle different package names correctly', () => {
+                const walletRpc = createRpc<WalletKit>(
+                    'lnrpc.WalletKit',
+                    mockLnc
+                );
+                const method = walletRpc.listUnspent;
+
+                const request = { minConfs: 1 };
+                method(request);
+
+                expect(mockLnc.request).toHaveBeenCalledWith(
+                    'lnrpc.WalletKit.ListUnspent',
+                    request
+                );
+            });
+        });
+
+        describe('Error handling', () => {
+            it('should handle LNC request errors', async () => {
+                const method = rpc.getInfo;
+                const error = new Error('RPC Error');
+                mockLnc.request.mockRejectedValueOnce(error);
+
+                const request = {};
+                await expect(method(request)).rejects.toThrow('RPC Error');
+            });
+        });
+    });
+});

lib/index.test.ts

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+import { afterEach, beforeEach, describe, expect, it, vi } from 'vitest';
+
+// Mock the wasm_exec module
+vi.mock('../../lib/wasm_exec', () => ({}));
+
+// Mock @lightninglabs/lnc-core to avoid actual imports
+vi.mock('@lightninglabs/lnc-core');
+
+describe('Index Module', () => {
+    let originalInstantiateStreaming: any;
+
+    beforeEach(() => {
+        // Store original values
+        originalInstantiateStreaming =
+            globalThis.WebAssembly?.instantiateStreaming;
+
+        // Mock WebAssembly for testing
+        globalThis.WebAssembly = {
+            instantiateStreaming: vi.fn(),
+            instantiate: vi.fn(),
+            compile: vi.fn()
+        } as any;
+    });
+
+    afterEach(() => {
+        // Restore original values
+        if (originalInstantiateStreaming) {
+            globalThis.WebAssembly.instantiateStreaming =
+                originalInstantiateStreaming;
+        }
+        vi.restoreAllMocks();
+    });
+
+    describe('WebAssembly Polyfill', () => {
+        it('should polyfill WebAssembly.instantiateStreaming when not available', async () => {
+            // Remove instantiateStreaming to test polyfill
+            delete (globalThis.WebAssembly as any).instantiateStreaming;
+
+            // Import the index module to trigger the polyfill
+            await import('./index');
+
+            // Now WebAssembly.instantiateStreaming should exist
+            expect(typeof globalThis.WebAssembly?.instantiateStreaming).toBe(
+                'function'
+            );
+        });
+
+        it('should use existing WebAssembly.instantiateStreaming when available', async () => {
+            // Set up existing WebAssembly.instantiateStreaming
+            const existingInstantiateStreaming = vi.fn().mockResolvedValue({
+                module: {},
+                instance: {}
+            });
+
+            globalThis.WebAssembly = {
+                ...globalThis.WebAssembly,
+                instantiateStreaming: existingInstantiateStreaming
+            };
+
+            // Import the index module
+            await import('./index');
+
+            // The existing function should still be there
+            expect(globalThis.WebAssembly.instantiateStreaming).toBe(
+                existingInstantiateStreaming
+            );
+        });
+    });
+});