Cannot set JSON config value using magentoCLI

[navarr]

Preconditions

1. Magento 2.3.4 (incl. Vertex) w/ MFTF 2.5.3 (cursory glance suggests issue occurs with develop branch)

Steps to reproduce

1. Modify test VertexAsRegisteredCustomerCheckTaxWhenFlexibleFieldIsSentForEcoProducts to not after step setupFlexFieldConfig
2. Modify before step setupFlexFieldConfig in same test to be:

<magentoCLI stepKey="setupFlexFieldConfig" command="config:set" arguments='tax/vertex_flexfields/code &apos;[{"field_id":"1","field_source":"product.custom.$$createProductAttribute.attribute_code$$"}]&apos;' />

3. Check core_config_data table for path 'tax/vertex_flexfields/code'

Expected result

1. Value is [{"field_id":"1","field_source":"product.custom.[CODE]"}]

Actual result

1. Value is \[\{\"field_id\":\"1\",\"field_source\":\"product.custom.[CODE]\"\}\]

This is caused by PHP's escapeshellcmd method call: https://github.com/magento/magento2-functional-testing-framework/blob/develop/etc/config/command.php#L26

magento2-functional-testing-framework/etc/config/command.php

Lines 25 to 27 in d82e6cf

	if ($valid) {
	$fullCommand = escapeshellcmd($magentoBinary . " $command" . " $arguments");
	$process = new Symfony\Component\Process\Process($fullCommand);

If the ' is not included, the result instead has the brackets not escaped (properly) but removes the quotation marks entirely. I have failed to find any combination of escaping that comes out of escapeshellcmd in a way that sets this configuration value correctly.

By itself, it is handled properly by escapeshellarg but I am not aware of any reliable way to automatically determine individual arguments in $arguments

[lbajsarowicz]

Idea 1: Add noEscape tag to <magentoCLI, that disables escape for arguments=""

CC @okolesnyk

[jilu1]

@navarr Thank you for reporting the issue! Internal ticket https://jira.corp.magento.com/browse/MQE-2239 is created.

[okolesnyk]

Hey @navarr
Could you please confirm if that's still an issue?
We fixed a similar issue quite a while ago and before closing this one I just want to make sure it works.
Thanks