How can you access AngularJS scope using Playwright after migrating from Protractor?

Question

How can you access AngularJS scope using Playwright after migrating from Protractor?

I'm encountering a minor (hopefully) issue. For personal reasons, I need to transition from using Protractor to Playwright. Initially, everything was smooth sailing as I migrated numerous steps without any hitches. However, I've hit a roadblock while trying to migrate Protractor's code that involves executeScript() and accessing scope.

Here is an example of what I had in Protractor:

browser.executeScript(element => $(element).scope().$ctrl.myFunction(), finder.getWebElement());

In Playwright, I attempted the following (including console.log for debugging purposes):

const elementHandle: ElementHandle | null = await this.button.elementHandle();

await this.page.evaluate(
({ element, functionName }) => {
                    const angularElement = (window as any).angular.element(element);
                    const scope = angularElement.scope();
                    console.log("📣📣📣", scope); // returns undefined
                    console.log("📣📣📣",scope.$ctrl); // also returns undefined
                    scope.$ctrl[myFunction]();
                },
                { element: elementHandle, functionName }
            );

I'm completely bewildered by this challenge. I can't seem to figure out how to make it work. Any help would be greatly appreciated! Thank you in advance!

angularjs typescript protractor playwright playwright-test

Answer 1

Answer №1

Finally uncovered the solution!

I discovered that in Angular, accessing scope requires being in debug mode. To achieve this using Playwright, I created a specific method and executed it within Cucumber's "Before" Hook:

async activateDebugMode() {
        // Defining a promise to resolve upon page reload
        const pageReloaded = new Promise((resolve) => {
            this.mainWindow.once("load", resolve);
        });

        // Verifying if AngularJS is loaded before enabling debug mode
        await this.mainWindow.evaluate(() => {
            if ((window as any).angular) {
                (window as any).angular.reloadWithDebugInfo();
            }
        });

        // Waiting for full page load
        await pageReloaded;

        // Checking if debug mode is now enabled
        const isDebugModeEnabled = await this.mainWindow.evaluate(() => {
            const bodyClasses = document.body.className.split(" ");
            return bodyClasses.includes("ng-scope");
        });

        // Including this for debugging purposes
        console.log("Is Debug Mode Enabled:", isDebugModeEnabled);
    }

Answer 2

Finally uncovered the solution!

I discovered that in Angular, accessing scope requires being in debug mode. To achieve this using Playwright, I created a specific method and executed it within Cucumber's "Before" Hook:

async activateDebugMode() {
        // Defining a promise to resolve upon page reload
        const pageReloaded = new Promise((resolve) => {
            this.mainWindow.once("load", resolve);
        });

        // Verifying if AngularJS is loaded before enabling debug mode
        await this.mainWindow.evaluate(() => {
            if ((window as any).angular) {
                (window as any).angular.reloadWithDebugInfo();
            }
        });

        // Waiting for full page load
        await pageReloaded;

        // Checking if debug mode is now enabled
        const isDebugModeEnabled = await this.mainWindow.evaluate(() => {
            const bodyClasses = document.body.className.split(" ");
            return bodyClasses.includes("ng-scope");
        });

        // Including this for debugging purposes
        console.log("Is Debug Mode Enabled:", isDebugModeEnabled);
    }

How can you access AngularJS scope using Playwright after migrating from Protractor?

Answer №1

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