Initial commit: add .gitignore and README

tests/unit/adapters/balancer.test.ts

@@ -0,0 +1,74 @@
+import { describe, it, expect, vi, beforeEach } from "vitest";
+import { BalancerAdapter } from "../../../src/adapters/balancer.js";
+
+describe("Balancer Adapter", () => {
+  let adapter: BalancerAdapter;
+  let mockProvider: any;
+
+  beforeEach(() => {
+    mockProvider = {
+      getNetwork: vi.fn().mockResolvedValue({ chainId: 1n }),
+      call: vi.fn(),
+    };
+
+    vi.spyOn(require("ethers"), "JsonRpcProvider").mockImplementation(() => mockProvider);
+    vi.spyOn(require("ethers"), "Contract").mockImplementation(() => ({
+      swap: vi.fn(),
+      batchSwap: vi.fn(),
+      interface: {
+        encodeFunctionData: vi.fn(),
+      },
+    }));
+  });
+
+  it("should encode single swap", async () => {
+    adapter = new BalancerAdapter("mainnet");
+    
+    const swapParams = {
+      poolId: "0x...",
+      kind: 0, // GIVEN_IN
+      assetIn: "0xA0b86991c6218b36c1d19D4a2e9Eb0cE3606eB48",
+      assetOut: "0xdAC17F958D2ee523a2206206994597C13D831ec7",
+      amount: 1000000n,
+      userData: "0x",
+    };
+
+    const data = await adapter.swap(swapParams);
+    expect(data).toBeDefined();
+    expect(data.to).toBeDefined();
+    expect(data.data).toBeDefined();
+  });
+
+  it("should encode batch swap", async () => {
+    adapter = new BalancerAdapter("mainnet");
+    
+    const batchSwapParams = {
+      kind: 0,
+      swaps: [{
+        poolId: "0x...",
+        assetInIndex: 0,
+        assetOutIndex: 1,
+        amount: 1000000n,
+        userData: "0x",
+      }],
+      assets: [
+        "0xA0b86991c6218b36c1d19D4a2e9Eb0cE3606eB48",
+        "0xdAC17F958D2ee523a2206206994597C13D831ec7",
+      ],
+      funds: {
+        sender: "0x123",
+        fromInternalBalance: false,
+        recipient: "0x123",
+        toInternalBalance: false,
+      },
+      limits: [0n, 0n],
+      deadline: Math.floor(Date.now() / 1000) + 60 * 20,
+    };
+
+    const data = await adapter.batchSwap(batchSwapParams);
+    expect(data).toBeDefined();
+    expect(data.to).toBeDefined();
+    expect(data.data).toBeDefined();
+  });
+});
+