openmct/e2e/tests/plugins/plot/autoscale.e2e.spec.js

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 * as represented by the Administrator of the National Aeronautics and Space
 * Administration. All rights reserved.
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 * Open MCT is licensed under the Apache License, Version 2.0 (the
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/*
Testsuite for plot autoscale.
*/

const { test: _test, expect } = require('@playwright/test');

// create a new `test` API that will not append platform details to snapshot
// file names, only for the tests in this file, so that the same snapshots will
// be used for all platforms.
const test = _test.extend({
    _autoSnapshotSuffix: [
        async ({}, use, testInfo) => {
            testInfo.snapshotSuffix = '';
            await use();
        },
        { auto: true }
    ]
});

test.use({
    viewport: {
        width: 1280,
        height: 720
    }
});

test.describe('ExportAsJSON', () => {
    test('User can set autoscale with a valid range @snapshot', async ({ page }) => {
        await page.goto('/', { waitUntil: 'networkidle' });

        await setTimeRange(page);

        await createSinewaveOverlayPlot(page);

        await testYTicks(page, ['-1.00', '-0.50', '0.00', '0.50', '1.00']);

        await turnOffAutoscale(page);

        const canvas = page.locator('canvas').nth(1);

        // Make sure that after turning off autoscale, the user selected range values start at the same values the plot had prior.
        await Promise.all([
            testYTicks(page, ['-1.00', '-0.50', '0.00', '0.50', '1.00']),
            new Promise(r => setTimeout(r, 100))
                .then(() => canvas.screenshot())
                .then(shot => expect(shot).toMatchSnapshot('autoscale-canvas-prepan.png', { maxDiffPixels: 40 }))
        ]);

        await page.keyboard.down('Alt');

        await canvas.dragTo(canvas, {
            sourcePosition: {
                x: 200,
                y: 200
            },
            targetPosition: {
                x: 400,
                y: 400
            }
        });

        await page.keyboard.up('Alt');

        // Ensure the drag worked.
        await Promise.all([
            testYTicks(page, ['0.00', '0.50', '1.00', '1.50', '2.00']),
            new Promise(r => setTimeout(r, 100))
                .then(() => canvas.screenshot())
                .then(shot => expect(shot).toMatchSnapshot('autoscale-canvas-panned.png', { maxDiffPixels: 40 }))
        ]);
    });
});

/**
 * @param {import('@playwright/test').Page} page
 * @param {string} start
 * @param {string} end
 */
async function setTimeRange(page, start = '2022-03-29 22:00:00.000Z', end = '2022-03-29 22:00:30.000Z') {
    // Set a specific time range for consistency, otherwise it will change
    // on every test to a range based on the current time.

    const timeInputs = page.locator('input.c-input--datetime');
    await timeInputs.first().click();
    await timeInputs.first().fill(start);

    await timeInputs.nth(1).click();
    await timeInputs.nth(1).fill(end);
}

/**
 * @param {import('@playwright/test').Page} page
 */
async function createSinewaveOverlayPlot(page) {
    // click create button
    await page.locator('button:has-text("Create")').click();

    // add overlay plot with defaults
    await page.locator('li:has-text("Overlay Plot")').click();
    await Promise.all([
        page.waitForNavigation(),
        //Wait for Save Banner to appear1
        page.waitForSelector('.c-message-banner__message')
    ]);
    //Wait until Save Banner is gone
    await page.waitForSelector('.c-message-banner__message', { state: 'detached'});

    // save (exit edit mode)
    await page.locator('text=Snapshot Save and Finish Editing Save and Continue Editing >> button').nth(1).click();
    await page.locator('text=Save and Finish Editing').click();

    // click create button
    await page.locator('button:has-text("Create")').click();

    // add sine wave generator with defaults
    await page.locator('li:has-text("Sine Wave Generator")').click();
    await Promise.all([
        page.waitForNavigation(),
        //Wait for Save Banner to appear1
        page.waitForSelector('.c-message-banner__message')
    ]);
    //Wait until Save Banner is gone
    await page.waitForSelector('.c-message-banner__message', { state: 'detached'});

    // focus the overlay plot
    await page.locator('text=Open MCT My Items >> span').nth(3).click();
    await Promise.all([
        page.waitForNavigation(),
        page.locator('text=Unnamed Overlay Plot').first().click()
    ]);
}

/**
 * @param {import('@playwright/test').Page} page
 */
async function turnOffAutoscale(page) {
    // enter edit mode
    await page.locator('text=Unnamed Overlay Plot Snapshot >> button').nth(3).click();

    // uncheck autoscale
    await page.locator('text=Y Axis Scaling Auto scale Padding >> input[type="checkbox"]').uncheck();

    // save
    await page.locator('text=Snapshot Save and Finish Editing Save and Continue Editing >> button').nth(1).click();
    await page.locator('text=Save and Finish Editing').click();
}

/**
 * @param {import('@playwright/test').Page} page
 */
async function testYTicks(page, values) {
    const yTicks = page.locator('.gl-plot-y-tick-label');
    let promises = [yTicks.count().then(c => expect(c).toBe(values.length))];

    for (let i = 0, l = values.length; i < l; i += 1) {
        promises.push(expect(yTicks.nth(i)).toHaveText(values[i])); // eslint-disable-line
    }

    await Promise.all(promises);
}