Change test to use preferred methods, fix revealed money bug

[eileenmcnaughton]

Overview

Switches to preferred function calls, fixes revealed money cleaning bug

Before

Calling Payment.create with total_amount => '2,000.00' fails

After

Calling Payment.create with total_amount => '2,000.00' works in the same way as Contribution.create

Technical Details

In switching this test over I found that Payment.create does not handle cleaning money - which it should to bring it
into line with Contribution.create api

Comments

[civibot]

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[seamuslee001]

Change makes sense to me tests have passed i see no issues with this merging