OME Tests

[jazg]

Description

Fixed tests for the OME by adding a minimumSettleVolume to the Settler. This allows us to customise the mock Settler used throughout the tests.

Motivation

Issues when testing Settler since the minimum volume was implemented.

[coveralls]

Pull Request Test Coverage Report for Build 3593

• 6 of 6 (100.0%) changed or added relevant lines in 1 file are covered.
• 326 unchanged lines in 12 files lost coverage.
• Overall coverage increased (+0.8%) to 66.787%

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Files with Coverage Reduction	New Missed Lines	%
order/fragment.go	3	68.32%
stream/stream.go	7	90.67%
identity/multiaddress.go	7	78.15%
grpc/conn.go	8	48.98%
stream/channel.go	10	89.0%
grpc/oracle.go	18	75.86%
smpc/message.go	19	30.91%
orderbook/orderbook.go	27	80.0%
grpc/orderbook.go	29	75.63%
grpc/swarm.go	38	73.26%

Totals
Change from base Build 3574:	0.8%
Covered Lines:	4806
Relevant Lines:	7196

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💛 - Coveralls