test: runtime fixtures - bad files

web/e2e/png-fixtures.spec.ts

@@ -0,0 +1,69 @@
+import { expect, test, type Page } from "playwright/test";
+import {
+	crcBadAncillaryPng,
+	crcBadIdatPng,
+	garbageTailPng,
+	idatCutPng,
+	palette4Png,
+	palette256Png,
+	sixteenBitPng,
+	truncatedHeaderPng,
+	truncatedNoIendPng,
+	type SourceFile,
+} from "./helpers/fixtures";
+import {
+	errorAlert,
+	expectNoErrorAlert,
+	expectNoErrors,
+	openTool,
+	resultImage,
+	trackErrors,
+	uploadImage,
+} from "./helpers/page";
+
+async function expectRejected(page: Page, file: SourceFile): Promise<void> {
+	const sink = trackErrors(page);
+	await openTool(page, "flip-png");
+	await uploadImage(page, file);
+	await expect(errorAlert(page)).toBeVisible();
+	await expect(resultImage(page)).toHaveCount(0);
+	expectNoErrors(sink);
+}
+
+async function expectAccepted(page: Page, file: SourceFile): Promise<void> {
+	const sink = trackErrors(page);
+	await openTool(page, "flip-png");
+	await uploadImage(page, file);
+	await expect(resultImage(page)).toBeVisible();
+	await expectNoErrorAlert(page);
+	expectNoErrors(sink);
+}
+
+const rejectedFixtures = [
+	crcBadIdatPng,
+	truncatedHeaderPng,
+	truncatedNoIendPng,
+	idatCutPng,
+];
+
+const acceptedFixtures = [
+	crcBadAncillaryPng,
+	garbageTailPng,
+	palette4Png,
+	palette256Png,
+	sixteenBitPng,
+];
+
+test.describe("PNG special fixtures", () => {
+	for (const file of rejectedFixtures) {
+		test(`${file.name}: shows an error without a result`, async ({ page }) => {
+			await expectRejected(page, file);
+		});
+	}
+
+	for (const file of acceptedFixtures) {
+		test(`${file.name}: decodes without an error`, async ({ page }) => {
+			await expectAccepted(page, file);
+		});
+	}
+});