Payment Driver ‐ Test Scenarios

• All tests are run with multi transactions on or off (with exceptions). Check status at the end.
• Most tests execute with implied preconditions -- enough tokens and gas to cover all transactions, and low gas price.
• Status is intentionally left as TBD until the API is designed.

Test Number	Preconditions	Description	Steps	Expected Result	Associated Payment Driver Status
1	-	Single token transfer	transfer tokens from account A to account `B	A and B balance changes accordingly	TBD
2	-	Multiple token transfers from A to B	do n times: transfer tokens from A to B	A and B` balance changes accordingly	TBD
3	-	Token transfer to different accounts w/o duplicates	do n times: transfer tokens from A to Bn	A and B{1..n} balances change accordingly	TBD
4	-	Multiple token transfers to multiple accounts w/ duplicates	do n times: transfer tokens from A to Br(n) where r(n) is not bijective	A and all Br(n) balances change accordingly	TBD
5	insufficient gas for transaction	Single transaction when no gas on account	transfer tokens from A to B	Driver detects insufficient gas for the transaction	TBD
6	insufficient token for transaction	Single transaction when no token on account	transfer tokens from A to B	Driver detects insufficient token for transaction	TBD
7	missing private key in config	Single transaction that you can not sign	transfer tokens from A to B	Driver detects that the key is missing, A and B balances do not change	TBD
8	misconfigured chain id	Single transaction	transfer tokens from A to B	Driver detects invalid / missing chain id, A and B balances do not change	TBD
9	-	Transaction to null address	transfer tokens from A to null address	Driver detects invalid transaction, A and B balances do not change	TBD
10	Blockchain in high gas state.	Single transaction with gas limit set low, after deadline	transfer tokens from A to B	Driver detects stuck transaction, A and B balances do not change	TBD
11	high gas	Stuck transaction retry	Transfer tokens from A to B -> transaction is stuck due to low gas -> transaction is cancelled -> transaction is retried	The second transaction succeeds, A and B balance changes accordingly	TBD
12	gas price is manipulated as part of the test	Stuck transaction unstucks during retry	Transfer tokens from A to B -> transaction is stuck due to low gas -> transaction is cancelled (-> blockchain accepts the old transaction) -> new transaction is sent with higher gas	Driver detects the second transaction fails because the previous one passed and reckognizes that the situation is OK, A and B balance changes accordingly	TBD
13	gas price is manipulated as part of the test	Stuck transaction's retry is stuck as well, old transaction passes during second retry	Transfer tokens from A to B -> transaction is stuck due to low gas -> transaction is cancelled (-> gas price increased) -> new transaction is sent with higher gas (-> gas falls and old transaction is accepted) -> new transaction is sent with higher gas	Driver detects the third transaction fails because the previous one passed and reckognizes that the situation is OK, A and B balance changes accordingly	TBD
14	different setup: two instances of the payment driver executing conflicting transactions from one account	Single transaction w/ wrong nonce	Both instances: transfer from A to B	One instance succeeds, the other detects that the transaction failed due to wrong nonce. A and B balance changes accordingly	TBD
15	-	Load tests (for example 100000 transactions to be processed)	the same as test (4) but with large n	A and B{1..n}1 balances change accordingly	TBD
TBD	TBD	TBD	TBD	TBD	TBD

This tests can be preformed in different configurations (for example payments generated during the run)