Amm integration tests (#190)

* wip: troubleshooting

* adapted tests

* removed unused import

* added any type

* removed debug console.log

* removed console.log

* checking return values are not null

* removed newline

* review comments adaptation

* CR fixes 2

src/__tests__/integration/happy-paths/ammWorkflow.test.ts

@@ -0,0 +1,93 @@
+import { FaucetClient } from "@cosmjs/faucet-client";
+import { Decimal, Uint64 } from "@cosmjs/math";
+import { config } from "config/network";
+import { Contract20WS } from "utils/cw20";
+import { Factory } from "utils/factory";
+import { createSigningClient, loadOrCreateWallet } from "utils/sdk";
+import { Pool, ProvideFormValues, SwapFormValues, Token } from "utils/tokens";
+
+it("creates a CW20 token and swaps it with TGD", async () => {
+  const signer = await loadOrCreateWallet(config);
+  const signingClient = await createSigningClient(config, signer);
+  const address = (await signer.getAccounts())[0].address;
+  const faucetClient = new FaucetClient(config.faucetUrl);
+  await faucetClient.credit(address, config.faucetTokens?.[0] ?? config.feeToken);
+
+  const tokenSymbol = "TST";
+  const tokenName = "Test Token";
+  const tokenDecimals = 6;
+  const tokenInitialSupply = "100000000";
+
+  const codeId = config.codeIds?.cw20Tokens?.[0] ?? 0;
+
+  const amount = Decimal.fromUserInput(tokenInitialSupply, tokenDecimals)
+    .multiply(Uint64.fromNumber(10 ** tokenDecimals))
+    .toString();
+
+  const cw20tokenAddress = await Contract20WS.createContract(
+    signingClient,
+    codeId,
+    address,
+    tokenName,
+    tokenSymbol,
+    tokenDecimals,
+    [{ address, amount }],
+    undefined,
+    config.gasPrice,
+    undefined,
+    undefined,
+  );
+  expect(cw20tokenAddress.startsWith(config.addressPrefix)).toBeTruthy();
+
+  const tokens = await Contract20WS.getAll(config, signingClient, address);
+  const cw20tokenInfo = tokens[cw20tokenAddress];
+
+  const { amount: balance_utgd } = await signingClient.getBalance(address, config.feeToken);
+
+  const tgradeToken = {
+    address: config.feeToken,
+    balance: balance_utgd,
+    humanBalance: Decimal.fromAtomics(balance_utgd, config.coinMap.utgd.fractionalDigits).toString(),
+    decimals: config.coinMap.utgd.fractionalDigits,
+    name: "Tgrade",
+    symbol: config.coinMap.utgd.denom,
+    total_supply: "",
+  };
+  const createPairValues: SwapFormValues = {
+    From: 1.0,
+    To: 10.0,
+    selectFrom: tgradeToken,
+    selectTo: cw20tokenInfo,
+  };
+  const provideValues: ProvideFormValues = {
+    assetA: 1.0,
+    assetB: 10.0,
+    selectFrom: tgradeToken,
+    selectTo: cw20tokenInfo,
+  };
+
+  await Factory.createPair(signingClient, address, config.factoryAddress, createPairValues, config.gasPrice);
+  const pairs = await Factory.getPairs(signingClient, config.factoryAddress);
+  expect(pairs).toBeTruthy();
+
+  const pair = pairs[Object.keys(pairs)[Object.keys(pairs).length - 1]];
+  const pairAddress = pair.contract_addr;
+  await Contract20WS.Authorized(signingClient, cw20tokenInfo.address, address, pairAddress, config.gasPrice);
+  const provideStatus = await Pool.ProvideLiquidity(
+    signingClient,
+    pairAddress,
+    address,
+    provideValues,
+    config.gasPrice,
+  );
+  expect(provideStatus).toBeTruthy();
+
+  const swapPairValues: SwapFormValues = {
+    From: 1.0,
+    To: 0.0, // This is simulated
+    selectFrom: tgradeToken,
+    selectTo: cw20tokenInfo,
+  };
+  const swappedStatus = await Token.Swap(signingClient, address, pair, swapPairValues, config.gasPrice);
+  expect(swappedStatus).toBeTruthy();
+}, 30000);

src/setupTests.ts

@@ -4,10 +4,11 @@
 // learn more: https://github.com/testing-library/jest-dom
 import "@testing-library/jest-dom";
 
-import { TextEncoder } from "util";
+import { TextDecoder, TextEncoder } from "util";
 
 // Fix for "ReferenceError: TextEncoder is not defined": https://github.com/facebook/jest/issues/9983#issuecomment-696427273
 global.TextEncoder = TextEncoder;
+global.TextDecoder = TextDecoder as any;
 
 // Fix for antd v4: https://github.com/ant-design/ant-design/issues/21096#issuecomment-725301551
 global.matchMedia =