Release Format Lab 0.1.0

tests/components/app.test.tsx

@@ -0,0 +1,36 @@
+import { render, screen } from "@testing-library/react";
+import userEvent from "@testing-library/user-event";
+import { describe, expect, it } from "vitest";
+import { Workbench } from "../../src/components/Workbench";
+
+describe("Format Lab workbench", () => {
+  it("shows catalog expectations beside initial measured changes", () => {
+    render(<Workbench />);
+    expect(
+      screen.getByRole("heading", { name: "Format Lab" }),
+    ).toBeInTheDocument();
+    expect(screen.getAllByText("measured changed").length).toBeGreaterThan(0);
+    expect(
+      screen.getByRole("row", { name: /Document metadata.*not tested/iu }),
+    ).toBeInTheDocument();
+  });
+
+  it("retains evidence after malformed input and disables unsupported execution", async () => {
+    const user = userEvent.setup();
+    render(<Workbench />);
+    const previous = (
+      screen.getByLabelText("Conversion output") as HTMLTextAreaElement
+    ).value;
+    await user.clear(screen.getByLabelText("Source data"));
+    await user.type(screen.getByLabelText("Source data"), "[[");
+    await user.click(
+      screen.getByRole("button", { name: "Run selected round trip" }),
+    );
+    expect(screen.getByRole("alert")).toHaveTextContent(/retained/u);
+    expect(screen.getByLabelText("Conversion output")).toHaveValue(previous);
+    await user.selectOptions(screen.getByLabelText("Domain"), "image");
+    expect(
+      screen.getByRole("button", { name: "Run selected round trip" }),
+    ).toBeDisabled();
+  });
+});