feat(it-tests): test schematics with yarn 1

[vscaiceanu-1a]

Proposed change

Related issues

Fixes

• 🐛 [Bug]: yarn create not working for Yarn 1.* #1189
• 🐛 All the schematics should be tested in yarn 1.* #1227

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[fpaul-1A]

if I remember correctly, these are modifying the ~/.yarnrc on the machine, not at project level
this is probably fine for the CI but not ideal when running locally
it might be better to directly modify the file like you do line 274 instead

[mrednic-1A]

true that. I'll do the updates directly on the file in the project
EDIT trying to do the change I realized that yarn 1 is using the root yarnrc for the global packages scopes (at least) and not the local one. It;s strange because it is not the case for global/cache folders for instance.

[kpanot]

Suggested change

	appendFileSync(yarnRcPath, `\nprefix "${posix.join(options.globalFolderPath.split(sep).join(posix.sep), `yarn1-global-folder`, options.packageScope || '')}"`);
	appendFileSync(yarnRcPath, `\nprefix "${posix.join(options.globalFolderPath.split(sep).join(posix.sep), 'yarn1-global-folder', options.packageScope || '')}"`);

[kpanot]

Suggested change

	['cache-folder', 'global-folder'].forEach(folder => {
	if (!content.includes(folder)) {
	appendFileSync(yarnRcPath, `\n${folder} "${posix.join(options.globalFolderPath!.split(sep).join(posix.sep), `yarn1-${folder}`, options.packageScope || '')}"`);
	}
	});
	['cache-folder', 'global-folder']
	.filter((folder) => !content.includes(folder))
	.forEach(folder => {
	appendFileSync(yarnRcPath, `\n${folder} "${posix.join(options.globalFolderPath!.split(sep).join(posix.sep), `yarn1-${folder}`, options.packageScope || '')}"`);
	});

[kpanot]

Suggested change

	return getVersionedPackageManager() === 'npm' ? 'npm' : 'yarn';
	const pm = getVersionedPackageManager();
	return pm.startsWith('yarn') ? 'yarn' : pm;