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https://github.com/Ku6epXBOCTuK/easy-png-tools.git
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docs: review all
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import { unzipSync } from "fflate";
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import { expect, test } from "playwright/test";
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import {
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corruptPng,
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landscapePng,
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largePng,
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onePixelPng,
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opaquePng,
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} from "./helpers/fixtures";
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import {
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downloadResultBytes,
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errorAlert,
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expectNoErrorAlert,
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expectNoErrors,
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openTool,
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rangeInput,
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resultImage,
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sourceImage,
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trackErrors,
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uploadImage,
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useEnglish,
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} from "./helpers/page";
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test("resize-png uses the source dimensions by default", async ({ page }) => {
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const sink = trackErrors(page);
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await openTool(page, "resize-png");
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await uploadImage(page, opaquePng);
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await expect(page.getByRole("spinbutton", { name: "Width" })).toHaveValue(
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"64",
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);
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await expect(page.getByRole("spinbutton", { name: "Height" })).toHaveValue(
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"48",
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);
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await expect(resultImage(page)).toBeVisible();
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await expectNoErrorAlert(page);
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expectNoErrors(sink);
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});
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test("crop-png starts with the full source area", async ({ page }) => {
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const sink = trackErrors(page);
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await openTool(page, "crop-png");
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await uploadImage(page, opaquePng);
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await expect(page.getByRole("spinbutton", { name: "Width" })).toHaveValue(
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"64",
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);
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await expect(page.getByRole("spinbutton", { name: "Height" })).toHaveValue(
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"48",
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);
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await expect(resultImage(page)).toBeVisible();
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await expectNoErrorAlert(page);
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expectNoErrors(sink);
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});
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test("flip-png: full flow - upload, result, download", async ({ page }) => {
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const sink = trackErrors(page);
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await openTool(page, "flip-png");
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await uploadImage(page, landscapePng);
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await expect(resultImage(page)).toBeVisible();
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const { name, bytes } = await downloadResultBytes(page);
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expect(name).toBe("flip-png.png");
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expect(Array.from(bytes.subarray(0, 8))).toEqual([
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137, 80, 78, 71, 13, 10, 26, 10,
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]);
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await expectNoErrorAlert(page);
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expectNoErrors(sink);
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});
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test("convert-png-to-jpg: produces JPEG and quality affects size", async ({
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page,
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}) => {
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const sink = trackErrors(page);
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await openTool(page, "convert-png-to-jpg");
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await uploadImage(page, largePng);
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await expect(resultImage(page)).toBeVisible();
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const quality = rangeInput(page, "Quality");
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await quality.fill("10");
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const low = await downloadResultBytes(page);
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expect(low.name).toBe("convert-png-to-jpg.jpg");
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expect(Array.from(low.bytes.subarray(0, 3))).toEqual([255, 216, 255]);
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await quality.fill("90");
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const high = await downloadResultBytes(page);
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expect(high.bytes.length).toBeGreaterThan(low.bytes.length);
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await expectNoErrorAlert(page);
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expectNoErrors(sink);
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});
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test("convert-png-to-webp: produces WebP and quality affects size", async ({
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page,
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}) => {
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const sink = trackErrors(page);
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await openTool(page, "convert-png-to-webp");
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await uploadImage(page, largePng);
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await expect(resultImage(page)).toBeVisible();
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const quality = rangeInput(page, "Quality");
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await quality.fill("10");
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const low = await downloadResultBytes(page);
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expect(low.name).toBe("convert-png-to-webp.webp");
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expect(Array.from(low.bytes.subarray(0, 4))).toEqual([82, 73, 70, 70]);
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expect(Array.from(low.bytes.subarray(8, 12))).toEqual([87, 69, 66, 80]);
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await quality.fill("90");
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const high = await downloadResultBytes(page);
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expect(high.bytes.length).toBeGreaterThan(low.bytes.length);
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await expectNoErrorAlert(page);
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expectNoErrors(sink);
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});
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test("png-to-bmp: produces a BMP download", async ({ page }) => {
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const sink = trackErrors(page);
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await openTool(page, "png-to-bmp");
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await uploadImage(page, opaquePng);
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await expect(resultImage(page)).toBeVisible();
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const { name, bytes } = await downloadResultBytes(page);
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expect(name).toBe("png-to-bmp.bmp");
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expect(Array.from(bytes.subarray(0, 2))).toEqual([66, 77]);
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await expectNoErrorAlert(page);
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expectNoErrors(sink);
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});
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test("reset restores defaults and re-runs with the source", async ({
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page,
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}) => {
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const sink = trackErrors(page);
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await openTool(page, "blur-png");
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await uploadImage(page, opaquePng);
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await expect(resultImage(page)).toBeVisible();
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const radius = rangeInput(page, /radius/i);
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await radius.fill("20");
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await expect(radius).toHaveValue("20");
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await page.getByRole("button", { name: "Reset" }).click();
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await expect(radius).toHaveValue("4");
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await expect(sourceImage(page)).toBeVisible();
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await expect(resultImage(page)).toBeVisible();
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await expectNoErrorAlert(page);
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expectNoErrors(sink);
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});
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test("split-into-parts-png downloads a zip with named PNG parts", async ({
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page,
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}) => {
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const sink = trackErrors(page);
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await openTool(page, "split-into-parts-png");
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await uploadImage(page, landscapePng);
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await rangeInput(page, "Columns").fill("3");
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await rangeInput(page, "Rows").fill("2");
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await expect(page.getByText("part-1-3.png")).toBeVisible();
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const { name, bytes } = await downloadResultBytes(page);
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expect(name).toBe("split-into-parts-png.zip");
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const entries = unzipSync(bytes);
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expect(Object.keys(entries)).toEqual([
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"part-1-1.png",
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"part-1-2.png",
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"part-1-3.png",
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"part-2-1.png",
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"part-2-2.png",
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"part-2-3.png",
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]);
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for (const bytes of Object.values(entries)) {
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expect(Array.from(bytes.subarray(0, 8))).toEqual([
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137, 80, 78, 71, 13, 10, 26, 10,
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]);
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}
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await expectNoErrorAlert(page);
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expectNoErrors(sink);
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});
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test("blur: changing slider updates result image", async ({ page }) => {
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await openTool(page, "blur-png");
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await uploadImage(page, opaquePng);
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await expect(resultImage(page)).toBeVisible();
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const firstSource = await resultImage(page).getAttribute("src");
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await rangeInput(page, /radius/i).fill("20");
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await expect(resultImage(page)).not.toHaveAttribute("src", firstSource ?? "");
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});
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test("runs without Web Worker (fallback)", async ({ browser }) => {
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const context = await browser.newContext();
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try {
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await context.addInitScript(() => {
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Object.defineProperty(window, "Worker", {
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value: undefined,
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configurable: true,
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});
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});
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const page = await context.newPage();
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await useEnglish(page);
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const sink = trackErrors(page);
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await openTool(page, "flip-png");
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await uploadImage(page, landscapePng);
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await expect(resultImage(page)).toBeVisible();
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await expectNoErrorAlert(page);
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expectNoErrors(sink);
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} finally {
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await context.close();
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}
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});
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test("invalid file upload shows error, no crash", async ({ page }) => {
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const sink = trackErrors(page);
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await openTool(page, "flip-png");
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await uploadImage(page, corruptPng);
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await expect(errorAlert(page)).toBeVisible();
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await expect(resultImage(page)).toHaveCount(0);
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expectNoErrors(sink);
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});
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for (const fixture of [onePixelPng, largePng]) {
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test(`handles ${fixture.name} correctly`, async ({ page }) => {
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const sink = trackErrors(page);
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await openTool(page, "flip-png");
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await uploadImage(page, fixture);
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await expect(resultImage(page)).toBeVisible();
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expectNoErrors(sink);
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});
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}
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