Create forked scenario 2. by RZhang05 · Pull Request #159 · onflow/FlowYieldVaults

RZhang05 · 2026-02-03T18:01:00Z

Closes: #155

Depends on #173

Description

Output

5:00PM INF Using fork height chainId=flow-mainnet forkBlockID=24806fa16bae3ee6f3852c41ba413319306e2f5620133dd0a0786d228201a712 forkHeight=143292255 host=access.mainnet.nodes.onflow.org:9000
5:00PM INF LOG: "[TEST] Captured Position ID from event: 5"
5:00PM INF LOG: "[TEST] YieldVault ID: 208"
5:00PM INF LOG: "[TEST] Initial yield vault balance: 999.83077766"
5:00PM INF LOG: "[TEST] YieldVault balance before yield price 1.10000000: 999.83077766"
5:00PM INF LOG: "[TEST] YieldVault balance before yield price 1.10000000 rebalance: 1055.82098515"
5:00PM INF LOG: "[TEST] YieldVault balance after yield price 1.10000000 rebalance: 1061.53846035"
5:00PM INF LOG: "\n+----------------------------------------------------------------+"
5:00PM INF LOG: "|          PRECISION DRIFT DIAGNOSTIC - Yield Price 1.10000000         |"
5:00PM INF LOG: "+----------------------------------------------------------------+"
5:00PM INF LOG: "| Layer          | Value          | Drift         | % Drift      |"
5:00PM INF LOG: "|----------------|----------------|---------------|--------------|"
5:00PM INF LOG: "| Position       | 1061.53846038 | -0.00000116 | -0.00000000% |"
5:00PM INF LOG: "| YieldVault Balance   | 1061.53846035 | -0.00000119 | -0.00000000% |"
5:00PM INF LOG: "| Expected       | 1061.53846154 | ------------- | ------------ |"
5:00PM INF LOG: "|----------------|----------------|---------------|--------------|"
5:00PM INF LOG: "| YieldVault vs Position: -0.00000003                                   |"
5:00PM INF LOG: "+----------------------------------------------------------------+"
5:00PM INF LOG: "\n== INTERMEDIATE VALUES TRACE:"
5:00PM INF LOG: "- Position Balance Details:"
5:00PM INF LOG: "  * Flow Amount (trueBalance): 1061.53846038"
5:00PM INF LOG: "- Expected Value Analysis:"
5:00PM INF LOG: "  * Expected UFix64: 1061.53846154"
5:00PM INF LOG: "- Precision Loss Summary:"
5:00PM INF LOG: "  * Position vs Expected: -0.00000116 (-0.00000000%)"
5:00PM INF LOG: "  * YieldVault vs Expected: -0.00000119 (-0.00000000%)"
5:00PM INF LOG: "  * Additional YieldVault Loss: -0.00000003"
5:00PM INF LOG: "\n\u{26a0}\u{fe0f}  WARNING: Significant precision drift detected!"
5:00PM INF LOG: "\n=== PRECISION COMPARISON for Yield Price 1.10000000 ==="
5:00PM INF LOG: "Expected Value:         1061.53846154"
5:00PM INF LOG: "Actual YieldVault Balance:    1061.53846035"
5:00PM INF LOG: "Flow Position Value:    1061.53846038"
5:00PM INF LOG: "Flow Position Amount:   1061.53846038 tokens"
5:00PM INF LOG: ""
5:00PM INF LOG: "YieldVault vs Expected:       -0.00000119 (-0.00000000%)"
5:00PM INF LOG: "Position vs Expected:   -0.00000116 (-0.00000000%)"
5:00PM INF LOG: "YieldVault vs Position:       -0.00000003"
5:00PM INF LOG: "===============================================\n"
5:00PM INF LOG: "[TEST] YieldVault balance before yield price 1.20000000: 1061.53846035"
5:00PM INF LOG: "[TEST] YieldVault balance before yield price 1.20000000 rebalance: 1115.39686571"
5:00PM INF LOG: "[TEST] YieldVault balance after yield price 1.20000000 rebalance: 1120.92522660"
5:00PM INF LOG: "\n+----------------------------------------------------------------+"
5:00PM INF LOG: "|          PRECISION DRIFT DIAGNOSTIC - Yield Price 1.20000000         |"
5:00PM INF LOG: "+----------------------------------------------------------------+"
5:00PM INF LOG: "| Layer          | Value          | Drift         | % Drift      |"
5:00PM INF LOG: "|----------------|----------------|---------------|--------------|"
5:00PM INF LOG: "| Position       | 1120.92522667 | -0.00000195 | -0.00000000% |"
5:00PM INF LOG: "| YieldVault Balance   | 1120.92522660 | -0.00000202 | -0.00000000% |"
5:00PM INF LOG: "| Expected       | 1120.92522862 | ------------- | ------------ |"
5:00PM INF LOG: "|----------------|----------------|---------------|--------------|"
5:00PM INF LOG: "| YieldVault vs Position: -0.00000007                                   |"
5:00PM INF LOG: "+----------------------------------------------------------------+"
5:00PM INF LOG: "\n== INTERMEDIATE VALUES TRACE:"
5:00PM INF LOG: "- Position Balance Details:"
5:00PM INF LOG: "  * Flow Amount (trueBalance): 1120.92522667"
5:00PM INF LOG: "- Expected Value Analysis:"
5:00PM INF LOG: "  * Expected UFix64: 1120.92522862"
5:00PM INF LOG: "- Precision Loss Summary:"
5:00PM INF LOG: "  * Position vs Expected: -0.00000195 (-0.00000000%)"
5:00PM INF LOG: "  * YieldVault vs Expected: -0.00000202 (-0.00000000%)"
5:00PM INF LOG: "  * Additional YieldVault Loss: -0.00000007"
5:00PM INF LOG: "\n\u{26a0}\u{fe0f}  WARNING: Significant precision drift detected!"
5:00PM INF LOG: "\n=== PRECISION COMPARISON for Yield Price 1.20000000 ==="
5:00PM INF LOG: "Expected Value:         1120.92522862"
5:00PM INF LOG: "Actual YieldVault Balance:    1120.92522660"
5:00PM INF LOG: "Flow Position Value:    1120.92522667"
5:00PM INF LOG: "Flow Position Amount:   1120.92522667 tokens"
5:00PM INF LOG: ""
5:00PM INF LOG: "YieldVault vs Expected:       -0.00000202 (-0.00000000%)"
5:00PM INF LOG: "Position vs Expected:   -0.00000195 (-0.00000000%)"
5:00PM INF LOG: "YieldVault vs Position:       -0.00000007"
5:00PM INF LOG: "===============================================\n"
5:00PM INF LOG: "[TEST] YieldVault balance before yield price 1.30000000: 1120.92522660"
5:00PM INF LOG: "[TEST] YieldVault balance before yield price 1.30000000 rebalance: 1173.04695001"
5:00PM INF LOG: "[TEST] YieldVault balance after yield price 1.30000000 rebalance: 1178.40856962"
5:00PM INF LOG: "\n+----------------------------------------------------------------+"
5:00PM INF LOG: "|          PRECISION DRIFT DIAGNOSTIC - Yield Price 1.30000000         |"
5:00PM INF LOG: "+----------------------------------------------------------------+"
5:00PM INF LOG: "| Layer          | Value          | Drift         | % Drift      |"
5:00PM INF LOG: "|----------------|----------------|---------------|--------------|"
5:00PM INF LOG: "| Position       | 1178.40856969 | -0.00000399 | -0.00000000% |"
5:00PM INF LOG: "| YieldVault Balance   | 1178.40856962 | -0.00000406 | -0.00000000% |"
5:00PM INF LOG: "| Expected       | 1178.40857368 | ------------- | ------------ |"
5:00PM INF LOG: "|----------------|----------------|---------------|--------------|"
5:00PM INF LOG: "| YieldVault vs Position: -0.00000007                                   |"
5:00PM INF LOG: "+----------------------------------------------------------------+"
5:00PM INF LOG: "\n== INTERMEDIATE VALUES TRACE:"
5:00PM INF LOG: "- Position Balance Details:"
5:00PM INF LOG: "  * Flow Amount (trueBalance): 1178.40856969"
5:00PM INF LOG: "- Expected Value Analysis:"
5:00PM INF LOG: "  * Expected UFix64: 1178.40857368"
5:00PM INF LOG: "- Precision Loss Summary:"
5:00PM INF LOG: "  * Position vs Expected: -0.00000399 (-0.00000000%)"
5:00PM INF LOG: "  * YieldVault vs Expected: -0.00000406 (-0.00000000%)"
5:00PM INF LOG: "  * Additional YieldVault Loss: -0.00000007"
5:00PM INF LOG: "\n\u{26a0}\u{fe0f}  WARNING: Significant precision drift detected!"
5:00PM INF LOG: "\n=== PRECISION COMPARISON for Yield Price 1.30000000 ==="
5:00PM INF LOG: "Expected Value:         1178.40857368"
5:00PM INF LOG: "Actual YieldVault Balance:    1178.40856962"
5:00PM INF LOG: "Flow Position Value:    1178.40856969"
5:00PM INF LOG: "Flow Position Amount:   1178.40856969 tokens"
5:00PM INF LOG: ""
5:00PM INF LOG: "YieldVault vs Expected:       -0.00000406 (-0.00000000%)"
5:00PM INF LOG: "Position vs Expected:   -0.00000399 (-0.00000000%)"
5:00PM INF LOG: "YieldVault vs Position:       -0.00000007"
5:00PM INF LOG: "===============================================\n"
5:00PM INF LOG: "[TEST] YieldVault balance before yield price 1.50000000: 1178.40856962"
5:00PM INF LOG: "[TEST] YieldVault balance before yield price 1.50000000 rebalance: 1279.67945034"
5:00PM INF LOG: "[TEST] YieldVault balance after yield price 1.50000000 rebalance: 1289.97387752"
5:00PM INF LOG: "\n+----------------------------------------------------------------+"
5:00PM INF LOG: "|          PRECISION DRIFT DIAGNOSTIC - Yield Price 1.50000000         |"
5:00PM INF LOG: "+----------------------------------------------------------------+"
5:00PM INF LOG: "| Layer          | Value          | Drift         | % Drift      |"
5:00PM INF LOG: "|----------------|----------------|---------------|--------------|"
5:00PM INF LOG: "| Position       | 1289.97387761 | -0.00000482 | -0.00000000% |"
5:00PM INF LOG: "| YieldVault Balance   | 1289.97387752 | -0.00000491 | -0.00000000% |"
5:00PM INF LOG: "| Expected       | 1289.97388243 | ------------- | ------------ |"
5:00PM INF LOG: "|----------------|----------------|---------------|--------------|"
5:00PM INF LOG: "| YieldVault vs Position: -0.00000009                                   |"
5:00PM INF LOG: "+----------------------------------------------------------------+"
5:00PM INF LOG: "\n== INTERMEDIATE VALUES TRACE:"
5:00PM INF LOG: "- Position Balance Details:"
5:00PM INF LOG: "  * Flow Amount (trueBalance): 1289.97387761"
5:00PM INF LOG: "- Expected Value Analysis:"
5:00PM INF LOG: "  * Expected UFix64: 1289.97388243"
5:00PM INF LOG: "- Precision Loss Summary:"
5:00PM INF LOG: "  * Position vs Expected: -0.00000482 (-0.00000000%)"
5:00PM INF LOG: "  * YieldVault vs Expected: -0.00000491 (-0.00000000%)"
5:00PM INF LOG: "  * Additional YieldVault Loss: -0.00000009"
5:00PM INF LOG: "\n\u{26a0}\u{fe0f}  WARNING: Significant precision drift detected!"
5:00PM INF LOG: "\n=== PRECISION COMPARISON for Yield Price 1.50000000 ==="
5:00PM INF LOG: "Expected Value:         1289.97388243"
5:00PM INF LOG: "Actual YieldVault Balance:    1289.97387752"
5:00PM INF LOG: "Flow Position Value:    1289.97387761"
5:00PM INF LOG: "Flow Position Amount:   1289.97387761 tokens"
5:00PM INF LOG: ""
5:00PM INF LOG: "YieldVault vs Expected:       -0.00000491 (-0.00000000%)"
5:00PM INF LOG: "Position vs Expected:   -0.00000482 (-0.00000000%)"
5:00PM INF LOG: "YieldVault vs Position:       -0.00000009"
5:00PM INF LOG: "===============================================\n"
5:00PM INF LOG: "[TEST] YieldVault balance before yield price 2.00000000: 1289.97387752"
5:00PM INF LOG: "[TEST] YieldVault balance before yield price 2.00000000 rebalance: 1530.33601275"
5:00PM INF LOG: "[TEST] YieldVault balance after yield price 2.00000000 rebalance: 1554.58390254"
5:00PM INF LOG: "\n+----------------------------------------------------------------+"
5:00PM INF LOG: "|          PRECISION DRIFT DIAGNOSTIC - Yield Price 2.00000000         |"
5:00PM INF LOG: "+----------------------------------------------------------------+"
5:00PM INF LOG: "| Layer          | Value          | Drift         | % Drift      |"
5:00PM INF LOG: "|----------------|----------------|---------------|--------------|"
5:00PM INF LOG: "| Position       | 1554.58390268 | -0.00000691 | -0.00000000% |"
5:00PM INF LOG: "| YieldVault Balance   | 1554.58390254 | -0.00000705 | -0.00000000% |"
5:00PM INF LOG: "| Expected       | 1554.58390959 | ------------- | ------------ |"
5:00PM INF LOG: "|----------------|----------------|---------------|--------------|"
5:00PM INF LOG: "| YieldVault vs Position: -0.00000014                                   |"
5:00PM INF LOG: "+----------------------------------------------------------------+"
5:00PM INF LOG: "\n== INTERMEDIATE VALUES TRACE:"
5:00PM INF LOG: "- Position Balance Details:"
5:00PM INF LOG: "  * Flow Amount (trueBalance): 1554.58390268"
5:00PM INF LOG: "- Expected Value Analysis:"
5:00PM INF LOG: "  * Expected UFix64: 1554.58390959"
5:00PM INF LOG: "- Precision Loss Summary:"
5:00PM INF LOG: "  * Position vs Expected: -0.00000691 (-0.00000000%)"
5:00PM INF LOG: "  * YieldVault vs Expected: -0.00000705 (-0.00000000%)"
5:00PM INF LOG: "  * Additional YieldVault Loss: -0.00000014"
5:00PM INF LOG: "\n\u{26a0}\u{fe0f}  WARNING: Significant precision drift detected!"
5:00PM INF LOG: "\n=== PRECISION COMPARISON for Yield Price 2.00000000 ==="
5:00PM INF LOG: "Expected Value:         1554.58390959"
5:00PM INF LOG: "Actual YieldVault Balance:    1554.58390254"
5:00PM INF LOG: "Flow Position Value:    1554.58390268"
5:00PM INF LOG: "Flow Position Amount:   1554.58390268 tokens"
5:00PM INF LOG: ""
5:00PM INF LOG: "YieldVault vs Expected:       -0.00000705 (-0.00000000%)"
5:00PM INF LOG: "Position vs Expected:   -0.00000691 (-0.00000000%)"
5:00PM INF LOG: "YieldVault vs Position:       -0.00000014"
5:00PM INF LOG: "===============================================\n"
5:00PM INF LOG: "[TEST] YieldVault balance before yield price 3.00000000: 1554.58390254"
5:00PM INF LOG: "[TEST] YieldVault balance before yield price 3.00000000 rebalance: 1989.17165050"
5:00PM INF LOG: "[TEST] YieldVault balance after yield price 3.00000000 rebalance: 2032.91741003"
5:00PM INF LOG: "\n+----------------------------------------------------------------+"
5:00PM INF LOG: "|          PRECISION DRIFT DIAGNOSTIC - Yield Price 3.00000000         |"
5:00PM INF LOG: "+----------------------------------------------------------------+"
5:00PM INF LOG: "| Layer          | Value          | Drift         | % Drift      |"
5:00PM INF LOG: "|----------------|----------------|---------------|--------------|"
5:00PM INF LOG: "| Position       | 2032.91741019 | -0.00001004 | -0.00000000% |"
5:00PM INF LOG: "| YieldVault Balance   | 2032.91741003 | -0.00001020 | -0.00000000% |"
5:00PM INF LOG: "| Expected       | 2032.91742023 | ------------- | ------------ |"
5:00PM INF LOG: "|----------------|----------------|---------------|--------------|"
5:00PM INF LOG: "| YieldVault vs Position: -0.00000016                                   |"
5:00PM INF LOG: "+----------------------------------------------------------------+"
5:00PM INF LOG: "\n== INTERMEDIATE VALUES TRACE:"
5:00PM INF LOG: "- Position Balance Details:"
5:00PM INF LOG: "  * Flow Amount (trueBalance): 2032.91741019"
5:00PM INF LOG: "- Expected Value Analysis:"
5:00PM INF LOG: "  * Expected UFix64: 2032.91742023"
5:00PM INF LOG: "- Precision Loss Summary:"
5:00PM INF LOG: "  * Position vs Expected: -0.00001004 (-0.00000000%)"
5:00PM INF LOG: "  * YieldVault vs Expected: -0.00001020 (-0.00000000%)"
5:00PM INF LOG: "  * Additional YieldVault Loss: -0.00000016"
5:00PM INF LOG: "\n\u{26a0}\u{fe0f}  WARNING: Significant precision drift detected!"
5:00PM INF LOG: "\n=== PRECISION COMPARISON for Yield Price 3.00000000 ==="
5:00PM INF LOG: "Expected Value:         2032.91742023"
5:00PM INF LOG: "Actual YieldVault Balance:    2032.91741003"
5:00PM INF LOG: "Flow Position Value:    2032.91741019"
5:00PM INF LOG: "Flow Position Amount:   2032.91741019 tokens"
5:00PM INF LOG: ""
5:00PM INF LOG: "YieldVault vs Expected:       -0.00001020 (-0.00000000%)"
5:00PM INF LOG: "Position vs Expected:   -0.00001004 (-0.00000000%)"
5:00PM INF LOG: "YieldVault vs Position:       -0.00000016"
5:00PM INF LOG: "===============================================\n"

Test results: "cadence/tests/forked_rebalance_scenario2_test.cdc"
- PASS: test_RebalanceYieldVaultScenario2

For contributor use:

Targeted PR against master branch
Linked to Github issue with discussion and accepted design OR link to spec that describes this work.
Code follows the standards mentioned here.
Updated relevant documentation
Re-reviewed Files changed in the Github PR explorer
Added appropriate labels

Create forked scenario 2 with placeholder yield token function.

f1f5ed5

RZhang05 self-assigned this Feb 3, 2026

RZhang05 linked an issue Feb 3, 2026 that may be closed by this pull request

Recreate Simulation Scenario 2 With Fork Testing Setup #155

Open

RZhang05 added 3 commits February 12, 2026 15:31

[WIP] Modify EVM storage in forked scen2. Currently fails tolerance.

5fbddab

Merge branch 'jribbink/evm-test-helpers' into forked-scen2

4fdd043

Merge branch 'main' into forked-scen2

12340bd

RZhang05 changed the base branch from raymond/forked-scen1 to main February 17, 2026 17:40

RZhang05 added 5 commits February 17, 2026 12:51

Clean up.

15a3663

Merge branch 'nialexsan/pyusd-fyv-strategy' into forked-scen2

e1570f1

Prepare for updated strategy.

02aff87

Merge branch 'jribbink/evm-test-helpers' into forked-scen2

08ed10f

Account for fees in pool prices to stay in tolerance.

af3e094

RZhang05 changed the base branch from main to raymond/forked-scen1 February 24, 2026 16:40

Base automatically changed from raymond/forked-scen1 to feature/forked-simulations February 26, 2026 22:51

RZhang05 added 3 commits February 27, 2026 11:00

Merge branch 'feature/forked-simulations' into forked-scen2

6d7e535

Fix scenario 2.

19ebbb7

Delete unused files.

0912ea8

RZhang05 changed the title ~~[WIP] Create forked scenario 2.~~ Create forked scenario 2. Feb 27, 2026

RZhang05 marked this pull request as ready for review February 27, 2026 16:23

RZhang05 requested a review from a team as a code owner February 27, 2026 16:23

RZhang05 requested a review from jribbink February 27, 2026 16:23

jribbink and others added 5 commits February 27, 2026 13:01

Improve precision of forked tests

7a1c8f8

Merge branch 'jribbink/forked-precision-improvements' into forked-scen2

f502f8a

Update scenario 2.

ee8589d

Improve scenario 2 fee accounting and tolerance.

c780575

Merge branch 'feature/forked-simulations' into forked-scen2

783aea1

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Create forked scenario 2.#159

Create forked scenario 2.#159
RZhang05 wants to merge 17 commits intofeature/forked-simulationsfrom
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RZhang05 commented Feb 3, 2026 •

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RZhang05 commented Feb 3, 2026 •

edited

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