Vue Test Utils: Errors messages about overwriting methods

[heathharrelson]

Vue Test Utils is warning about tests that overwrite components' methods block:

ERROR LOG: '[vue-test-utils]: overwriting methods via the `methods` property is deprecated and will be removed in the next major version. There is no clear migration path for the `methods` property - Vue does not support arbitrarily replacement of methods, nor should VTU. To stub a complex method extract it from the component and test it in isolation. Otherwise, the suggestion is to rethink those tests.'

IIRC, this is done to work around the fact that I couldn't get Jasmine's mock clock to work correctly with debounce.

REDCap-Vizr/test/components/ChartForm_test.js

Lines 150 to 156 in 7daae98

	// stub out the use of debounce so test runs synchronously
	methods: {
	validateChanges(evt) {
	const { target } = evt;
	this.validateInput(target);
	}
	}

These tests should be reworked to eliminate the errors.