add balance transfer tests

Add tests to show the error types of different impossible balance transfers.

Since it's only tests describing the current behavior, I merge this without review. We can change the behavior in an other MR.

closes #135 (closed)

changed milestone to %Horizon

added C-integrationtests RN-silent labels

mentioned in issue #135 (closed)

added 2 commits

• 89c4fdb9 - 1 commit from branch master
• 810a910e - add balance transfer tests

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added 2 commits

• 2ddae276 - 1 commit from branch master
• df90ee24 - add balance transfer tests

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marked this merge request as ready

enabled an automatic merge when the pipeline for df90ee24 succeeds

canceled the automatic merge

added 1 commit

• 2d7c77c3 - move balance transfer tests to separate file

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added 1 commit

• 52d18bac - add comments

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changed the description

enabled an automatic merge when the pipeline for 52d18bac succeeds

aborted the automatic merge because target branch was updated

added 4 commits

• 0c989e4a - 1 commit from branch master
• 547878ab - add balance transfer tests
• 341c2e8d - move balance transfer tests to separate file
• f34c95ff - add comments

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changed the description

merged

mentioned in commit 1ca986f9