Simulate TX UI Test

src/app/(sidebar)/transaction/simulate/page.tsx

@@ -145,6 +145,7 @@ export default function SimulateTransaction() {
         <>
           {simulateTxData ? (
             <div
+              data-testid="simulate-tx-response"
               className={`PageBody__content PageBody__scrollable ${simulateTxData?.result?.error ? "PageBody__content--error" : ""}`}
             >
               <PrettyJson json={simulateTxData} />

tests/simulateTransactionPage.test.ts

@@ -0,0 +1,259 @@
+import { test, expect } from "@playwright/test";
+
+test.describe("Simulate Transaction Page", () => {
+  test.beforeEach(async ({ page }) => {
+    await page.goto("http://localhost:3000/transaction/simulate");
+  });
+
+  test("Loads", async ({ page }) => {
+    await expect(page.locator("h1")).toHaveText("Simulate Transaction");
+  });
+
+  test.describe("Instruction Leeway Input", () => {
+    test("error when inputting a non whole number", async ({ page }) => {
+      const instructionLeewayOn = page.getByLabel("Instruction Leeway");
+      await instructionLeewayOn.fill("aaa");
+      await expect(page.getByText("Expected a whole number.")).toBeVisible();
+    });
+
+    test("previous response should be removed when inputting a non whole number", async ({
+      page,
+    }) => {
+      const instructionLeewayOn = page.getByLabel("Instruction Leeway");
+
+      // Getting a success response
+      const xdrInput = page.getByLabel(
+        "Input a base-64 encoded TransactionEnvelope",
+      );
+      const txResponseCard = page.getByTestId("simulate-tx-response");
+      const simulateTxBtn = page.getByRole("button", {
+        name: "Simulate transaction",
+      });
+
+      await xdrInput.fill(MOCK_VALID_SUCCESS_TX_XDR_RPC);
+
+      expect(simulateTxBtn).toBeEnabled();
+
+      // Mock the RPC submission api call
+      await page.route("https://soroban-testnet.stellar.org", async (route) => {
+        await route.fulfill({
+          status: 200,
+          contentType: "application/json",
+          body: JSON.stringify({
+            jsonrpc: "2.0",
+            id: 1,
+            result: {
+              status: "SUCCESS",
+            },
+          }),
+        });
+      });
+
+      const responsePromise = page.waitForResponse(
+        (response) =>
+          response.url().includes("soroban-testnet") &&
+          response.status() === 200,
+      );
+
+      await simulateTxBtn.click();
+
+      await responsePromise;
+
+      await expect(txResponseCard).toBeVisible();
+
+      // Typing in the wrong instruction leeway should remove the previous response
+      await instructionLeewayOn.fill("aaa");
+      await expect(page.getByText("Expected a whole number.")).toBeVisible();
+
+      await expect(txResponseCard).toBeHidden();
+    });
+
+    test("simulate button to be enabled when inputting a whole number for instruction leeway and the correct format xdr", async ({
+      page,
+    }) => {
+      const simulateTxBtn = page.getByRole("button", {
+        name: "Simulate transaction",
+      });
+      const xdrInput = page.getByLabel(
+        "Input a base-64 encoded TransactionEnvelope",
+      );
+
+      await expect(simulateTxBtn).toBeDisabled();
+
+      const instructionLeewayOn = page.getByLabel("Instruction Leeway");
+      await instructionLeewayOn.fill("23423423");
+
+      // inputting the leeway alone isn't enough to enable the simulate tx button
+      await expect(simulateTxBtn).toBeDisabled();
+
+      await xdrInput.fill(MOCK_VALID_SUCCESS_TX_XDR_RPC);
+
+      await expect(simulateTxBtn).toBeEnabled();
+    });
+  });
+
+  test.describe("Invalid XDR Flow", () => {
+    test("display an error with a random text", async ({ page }) => {
+      const invalidXdrMsg = page.getByText(
+        "Unable to parse input XDR into Transaction Envelope",
+      );
+      const xdrInput = page.getByLabel(
+        "Input a base-64 encoded TransactionEnvelope",
+      );
+      await xdrInput.fill("ssdfsdf");
+      await expect(invalidXdrMsg).toBeVisible();
+
+      const simulateTxBtn = page.getByRole("button", {
+        name: "Simulate transaction",
+      });
+
+      await expect(simulateTxBtn).toBeDisabled();
+    });
+
+    test("display an error with a valid XDR that is not TX Envelope", async ({
+      page,
+    }) => {
+      const invalidXdrMsg = page.getByText(
+        "Unable to parse input XDR into Transaction Envelope",
+      );
+      const xdrInput = page.getByLabel(
+        "Input a base-64 encoded TransactionEnvelope",
+      );
+      const simulateTxBtn = page.getByRole("button", {
+        name: "Simulate transaction",
+      });
+
+      // Simulate transaction button to be disabled by default
+      await expect(simulateTxBtn).toBeDisabled();
+
+      // Input an XDR in correct format
+      await xdrInput.fill(MOCK_VALID_FAILED_TX_XDR);
+
+      // Simulate transaction button to be enabled since the correct XDR input
+      await expect(simulateTxBtn).toBeEnabled();
+
+      // Input an XDR in unsupported format
+      await xdrInput.fill(MOCK_SC_VAL_XDR);
+
+      // Error message to be visible
+      await expect(invalidXdrMsg).toBeVisible();
+
+      // Simulate transaction button to be disabled
+      await expect(simulateTxBtn).toBeDisabled();
+    });
+  });
+
+  test.describe("Valid XDR with a Failed 400 Submission Flow", () => {
+    test("Submit via RPC", async ({ page }) => {
+      const xdrInput = page.getByLabel(
+        "Input a base-64 encoded TransactionEnvelope",
+      );
+      const txResponseCard = page.getByTestId("simulate-tx-response");
+
+      await xdrInput.fill(MOCK_VALID_FAILED_TX_XDR);
+
+      const simulateTxBtn = page.getByRole("button", {
+        name: "Simulate transaction",
+      });
+
+      await expect(simulateTxBtn).toBeEnabled();
+
+      // Mock the RPC submission api call
+      await page.route("https://soroban-testnet.stellar.org", async (route) => {
+        await route.fulfill({
+          status: 400,
+          contentType: "application/json",
+          body: JSON.stringify(MOCK_TX_XDR_FAILED_RPC_RESPONSE),
+        });
+      });
+
+      const responsePromise = page.waitForResponse(
+        (response) =>
+          response.url().includes("soroban") && response.status() === 400,
+      );
+
+      await simulateTxBtn.click();
+
+      await responsePromise;
+
+      await expect(txResponseCard).toBeVisible();
+
+      const responseText = await txResponseCard.textContent();
+
+      expect(responseText).toContain("ERROR");
+    });
+  });
+
+  test.describe("Valid XDR with a Successful Submission Flow", () => {
+    test("Submit via RPC", async ({ page }) => {
+      const xdrInput = page.getByLabel(
+        "Input a base-64 encoded TransactionEnvelope",
+      );
+      const txResponseCard = page.getByTestId("simulate-tx-response");
+      const simulateTxBtn = page.getByRole("button", {
+        name: "Simulate transaction",
+      });
+
+      await xdrInput.fill(MOCK_VALID_SUCCESS_TX_XDR_RPC);
+
+      expect(simulateTxBtn).toBeEnabled();
+
+      // Mock the RPC submission api call
+      await page.route("https://soroban-testnet.stellar.org", async (route) => {
+        await route.fulfill({
+          status: 200,
+          contentType: "application/json",
+          body: JSON.stringify({
+            jsonrpc: "2.0",
+            id: 1,
+            result: {
+              status: "SUCCESS",
+            },
+          }),
+        });
+      });
+
+      const responsePromise = page.waitForResponse(
+        (response) =>
+          response.url().includes("soroban-testnet") &&
+          response.status() === 200,
+      );
+
+      await simulateTxBtn.click();
+
+      await responsePromise;
+
+      await expect(txResponseCard).toBeVisible();
+
+      const responseText = await txResponseCard.textContent();
+
+      expect(responseText).toContain("SUCCESS");
+
+      // Omitting the API end result because the test gives inconsistenet results
+    });
+  });
+});
+
+// =============================================================================
+// Mock data
+// =============================================================================
+const MOCK_SC_VAL_XDR =
+  "AAAAEQAAAAEAAAAGAAAADwAAAAZhbW91bnQAAAAAAAoAAAAAAAAAAAAACRhOcqAAAAAADwAAAAxib290c3RyYXBwZXIAAAASAAAAARssFqxD/prgmYc9vGkaqslWrGlPINzMYTLc4yqRfO3AAAAADwAAAAxjbG9zZV9sZWRnZXIAAAADAz6ilAAAAA8AAAAIcGFpcl9taW4AAAAKAAAAAAAAAAAAAAARdlkuAAAAAA8AAAAEcG9vbAAAABIAAAABX/a7xfliM8nFgGel6pbCM6fT/kqrHAITNtWZQXgDlIIAAAAPAAAAC3Rva2VuX2luZGV4AAAAAAMAAAAA";
+
+const MOCK_VALID_FAILED_TX_XDR =
+  "AAAAAgAAAADJrq4b4AopDZibkeBWpDxuWKUcY4FUUNQdIEF3Nm9dkQAAAGQAAAIiAAAAAQAAAAEAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAEAAAAAAAAAAQAAAACXlGN76T6NQcaUJxbEkH3mi1HHWsHnLqMDdlLl9NlJgQAAAAAAAAAABfXhAAAAAAAAAAAA";
+
+const MOCK_VALID_SUCCESS_TX_XDR_RPC =
+  "AAAAAgAAAAAg4dbAxsGAGICfBG3iT2cKGYQ6hK4sJWzZ6or1C5v6GAAAAGQAJsOiAAAAEQAAAAEAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAEAAAAAAAAAGAAAAAAAAAABzAP+dP0PsNzYvFF1pv7a8RQXwH5eg3uZBbbWjE9PwAsAAAAJaW5jcmVtZW50AAAAAAAAAgAAABIAAAAAAAAAACDh1sDGwYAYgJ8EbeJPZwoZhDqEriwlbNnqivULm/oYAAAAAwAAAAMAAAAAAAAAAAAAAAA=";
+
+const MOCK_TX_XDR_FAILED_RPC_RESPONSE = {
+  jsonrpc: "2.0",
+  id: 1,
+  result: {
+    errorResultXdr: "AAAAAAAAAGT////7AAAAAA==",
+    status: "ERROR",
+    hash: "794e2073e130dc09d2b7e8b147b51f6ef75ff171c83c603bc8ab4cffa3f341a1",
+    latestLedger: 1305084,
+    latestLedgerCloseTime: "1733355115",
+  },
+};