Merge pull request #47 from PufferFinance/2684/add-converttoassets-me…

…thod

2684 Add convertToAssets method to pufferVaultHandler

lib/contracts/handlers/puffer-vault-handler.test.ts

@@ -121,4 +121,15 @@ describe('PufferVaultHandler', () => {
     expect(typeof (await estimate())).toBe('bigint');
     expect(isHash(await transact())).toBe(true);
   });
+
+  it('should convert pufETH to WETH', async () => {
+    const mockPufETH = 10n;
+    const mockWETH = 20n;
+
+    vaultTestingUtils.mockCall('convertToAssets', [mockWETH]);
+
+    const wethAmount = await handler.convertToAssets(mockPufETH);
+
+    expect(wethAmount).toBe(mockWETH);
+  });
 });

lib/contracts/handlers/puffer-vault-handler.ts

@@ -235,4 +235,15 @@ export class PufferVaultHandler {
 
     return { transact, estimate };
   }
+
+  /**
+   * Gives exchange rate of pufETH relative to WETH.
+   * This does not include any fees, as compared to previewRedeem method.
+   *
+   * @param amount Amount of pufETH to convert.
+   * @returns Amount of equivalent WETH.
+   */
+  public convertToAssets(amount: bigint) {
+    return this.getContract().read.convertToAssets([amount]);
+  }
 }