@lewiswright/vitest-plugin-vis/esm/server/commands/prepare_image_snapshot_comparison.js

Vitest visual testing plugin

import { resolve } from 'pathe';
import { isBase64String } from "../../shared/base64.js";
import { file } from "../file.js";
import { takeSnapshot, takeSnapshotByBrowser, writeSnapshot } from "../snapshot.js";
import { visContext } from "../vis_context.js";
import { assertTestPathDefined } from "./_assertions.js";
export const prepareImageSnapshotComparison = async (context, taskId, subject, isAutoSnapshot, options) => {
    assertTestPathDefined(context, 'prepareImageSnapshotComparison');
    // vitest:browser passes in `null` when not defined
    if (!options)
        options = {};
    options.timeout = options.timeout ?? 30000;
    options.animations = options.animations ?? true;
    const projectRoot = context.project.config.root;
    const info = await visContext.getSnapshotInfo(context, taskId, isAutoSnapshot, options);
    const baselineBuffer = await file.tryReadFile(resolve(projectRoot, info.baselinePath));
    if (!baselineBuffer) {
        if (isBase64String(subject)) {
            await writeSnapshot(resolve(projectRoot, info.baselinePath), subject);
        }
        else {
            await takeSnapshotByBrowser(context, resolve(projectRoot, info.baselinePath), subject, options);
        }
        return;
    }
    const resultBuffer = await takeSnapshot(context, resolve(projectRoot, info.resultPath), subject, options);
    return {
        ...info,
        projectRoot,
        baseline: baselineBuffer.toString('base64'),
        result: resultBuffer.toString('base64'),
    };
};