pre, post market #17
pre, post market #17
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WalkthroughAdds PRE/POST variants for multiple US equity price feeds, introduces CRCL/USD and PPLT/USD feeds, updates LibPyth symbol→ID and contract resolution, adjusts test fork bases, and expands tests to cover new feeds and expected price/confidence values. Changes
Estimated code review effort🎯 3 (Moderate) | ⏱️ ~25 minutes
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⚠️ Outside diff range comments (1)
test/src/lib/pyth/LibPyth.getPriceFeedId.t.sol (1)
167-208: Refactorvm.assumemega-predicate to a helper using the LibPyth symbol constants.
Current form is brittle and easy to desync when adding new feeds.contract LibPythGetPriceFeedIdTest is Test { + function _isKnownSymbol(uint256 u) internal pure returns (bool) { + return u == LibPyth.PRICE_FEED_SYMBOL_INTORASTRING_CRYPTO_ARB_USD + || u == LibPyth.PRICE_FEED_SYMBOL_INTORASTRING_CRYPTO_BTC_USD + || u == LibPyth.PRICE_FEED_SYMBOL_INTORASTRING_CRYPTO_WBTC_USD + || u == LibPyth.PRICE_FEED_SYMBOL_INTORASTRING_CRYPTO_CBBTC_USD + || u == LibPyth.PRICE_FEED_SYMBOL_INTORASTRING_CRYPTO_DOT_USD + || u == LibPyth.PRICE_FEED_SYMBOL_INTORASTRING_CRYPTO_ENA_USD + || u == LibPyth.PRICE_FEED_SYMBOL_INTORASTRING_CRYPTO_ETH_USD + || u == LibPyth.PRICE_FEED_SYMBOL_INTORASTRING_CRYPTO_WETH_USD + || u == LibPyth.PRICE_FEED_SYMBOL_INTORASTRING_CRYPTO_WSTETH_USD + || u == LibPyth.PRICE_FEED_SYMBOL_INTORASTRING_CRYPTO_LINK_USD + || u == LibPyth.PRICE_FEED_SYMBOL_INTORASTRING_CRYPTO_PEPE_USD + || u == LibPyth.PRICE_FEED_SYMBOL_INTORASTRING_CRYPTO_PYTH_USD + || u == LibPyth.PRICE_FEED_SYMBOL_INTORASTRING_CRYPTO_UNI_USD + || u == LibPyth.PRICE_FEED_SYMBOL_INTORASTRING_CRYPTO_XAUT_USD + || u == LibPyth.PRICE_FEED_SYMBOL_INTORASTRING_CRYPTO_XRP_USD + || u == LibPyth.PRICE_FEED_SYMBOL_INTORASTRING_EQUITY_US_COIN_USD + || u == LibPyth.PRICE_FEED_SYMBOL_INTORASTRING_EQUITY_US_COIN_USD_PRE + || u == LibPyth.PRICE_FEED_SYMBOL_INTORASTRING_EQUITY_US_COIN_USD_POST + || u == LibPyth.PRICE_FEED_SYMBOL_INTORASTRING_EQUITY_US_GOOG_USD + || u == LibPyth.PRICE_FEED_SYMBOL_INTORASTRING_EQUITY_US_AMZN_USD + || u == LibPyth.PRICE_FEED_SYMBOL_INTORASTRING_EQUITY_US_AMZN_USD_PRE + || u == LibPyth.PRICE_FEED_SYMBOL_INTORASTRING_EQUITY_US_AMZN_USD_POST + || u == LibPyth.PRICE_FEED_SYMBOL_INTORASTRING_EQUITY_US_AAPL_USD + || u == LibPyth.PRICE_FEED_SYMBOL_INTORASTRING_EQUITY_US_MSFT_USD + || u == LibPyth.PRICE_FEED_SYMBOL_INTORASTRING_EQUITY_US_TSLA_USD + || u == LibPyth.PRICE_FEED_SYMBOL_INTORASTRING_EQUITY_US_TSLA_USD_PRE + || u == LibPyth.PRICE_FEED_SYMBOL_INTORASTRING_EQUITY_US_TSLA_USD_POST + || u == LibPyth.PRICE_FEED_SYMBOL_INTORASTRING_EQUITY_US_NVDA_USD + || u == LibPyth.PRICE_FEED_SYMBOL_INTORASTRING_EQUITY_US_NVDA_USD_PRE + || u == LibPyth.PRICE_FEED_SYMBOL_INTORASTRING_EQUITY_US_NVDA_USD_POST + || u == LibPyth.PRICE_FEED_SYMBOL_INTORASTRING_EQUITY_US_META_USD + || u == LibPyth.PRICE_FEED_SYMBOL_INTORASTRING_EQUITY_US_GME_USD + || u == LibPyth.PRICE_FEED_SYMBOL_INTORASTRING_EQUITY_US_MSTR_USD + || u == LibPyth.PRICE_FEED_SYMBOL_INTORASTRING_EQUITY_US_MSTR_USD_PRE + || u == LibPyth.PRICE_FEED_SYMBOL_INTORASTRING_EQUITY_US_MSTR_USD_POST + || u == LibPyth.PRICE_FEED_SYMBOL_INTORASTRING_EQUITY_US_BRK_B_USD + || u == LibPyth.PRICE_FEED_SYMBOL_INTORASTRING_EQUITY_US_SPLG_USD + || u == LibPyth.PRICE_FEED_SYMBOL_INTORASTRING_EQUITY_US_IAU_USD + || u == LibPyth.PRICE_FEED_SYMBOL_INTORASTRING_EQUITY_US_SIVR_USD; + } + function testPriceFeedIdUnknownMappings(IntOrAString symbol) external { - vm.assume( - IntOrAString.unwrap(symbol) != IntOrAString.unwrap(LibIntOrAString.fromString2("Crypto.ARB/USD")) - && IntOrAString.unwrap(symbol) != IntOrAString.unwrap(LibIntOrAString.fromString2("Crypto.BTC/USD")) - ... - ); + uint256 u = IntOrAString.unwrap(symbol); + vm.assume(!_isKnownSymbol(u)); vm.expectRevert(UnsupportedFeedSymbol.selector); this.getPriceFeedIdExternal(symbol); } }
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📒 Files selected for processing (5)
src/lib/pyth/LibPyth.sol(5 hunks)test/lib/LibFork.sol(1 hunks)test/src/lib/pyth/LibPyth.constants.t.sol(5 hunks)test/src/lib/pyth/LibPyth.getPriceFeedId.t.sol(5 hunks)test/src/lib/pyth/LibPyth.getPriceNoOlderThan.t.sol(1 hunks)
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🧠 Learnings (1)
📚 Learning: 2025-10-03T13:50:23.519Z
Learnt from: Siddharth2207
Repo: rainlanguage/rain.pyth PR: 3
File: src/lib/pyth/LibPyth.sol:59-79
Timestamp: 2025-10-03T13:50:23.519Z
Learning: In the rain.pyth repository, the IntOrAString encoding scheme supports custom discriminator bytes. While most equity feed symbols use 0x92 as the discriminator byte, custom values like 0x91 are intentionally used for specific feeds such as EQUITY_US_GME_USD.
Applied to files:
src/lib/pyth/LibPyth.sol
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🔇 Additional comments (5)
test/src/lib/pyth/LibPyth.constants.t.sol (1)
80-87: Constant encoding assertions look solid for PRE/POST variants.
Good coverage to ensure theIntOrAStringliterals matchfromString2(...).Also applies to: 96-103, 116-123, 128-135, 148-155
test/src/lib/pyth/LibPyth.getPriceFeedId.t.sol (1)
73-80: PRE/POST mapping tests: good additions.
These directly validate the new branches inLibPyth.getPriceFeedId.Also applies to: 89-96, 109-116, 121-128, 141-148
test/src/lib/pyth/LibPyth.getPriceNoOlderThan.t.sol (1)
180-200: Forked price expectations: please verify determinism atFORK_BLOCK_BASE = 39366248, especially PRE/POST within 24h.
This is a good coverage expansion, but it will fail hard if any feed isn’t published within the 24h window at that exact block.Also applies to: 216-248, 264-278, 301-315
src/lib/pyth/LibPyth.sol (1)
115-124: Verify PRE/POST feed IDs against Pyth official source and confirm chain deployment.The new
PRICE_FEED_ID_EQUITY_US_*_USD_PRE/POSTconstants require validation against the official Pyth Price Feed IDs page (via Pyth docs or Hermes API). Ensure all six symbols (AMZN, TSLA, NVDA, MSTR, COIN) are deployed on Base and Arbitrum chains—if any feed ID is incorrect or unavailable on a target chain, price reads will revert or return wrong data. Regarding the IntOrAString discriminator bytes (0x96/0x97): custom discriminator bytes are intentionally used in this repo (e.g., 0x91 for EQUITY_US_GME_USD per the codebase learnings), so confirm these values align with your encoding scheme.Also applies to: 143-152, 159-168, 187-196, 222-231
test/lib/LibFork.sol (1)
8-9: Add documentation for fork block choice on Base.The fork block (39366248, mined Dec 12, 2025) is very recent. Add a comment explaining why this specific block was selected—e.g., "first block where Equity.US.* feeds have fresh prices" or similar rationale—to help future maintainers understand the determinism requirement and when/why it may need updating.
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test/src/lib/pyth/LibPyth.getPriceFeedId.t.sol (1)
167-216: The growingvm.assume“known symbol exclusion” list is brittle and reduces fuzz usefulness.
As more symbols/variants are added, this becomes easy to forget to update and can significantly constrain fuzzing. Consider centralizing “known symbols” into a single list used by both the positive and negative tests (or generate exclusions from the same table used intestPriceFeedIdKnownMappings).test/src/lib/pyth/LibPyth.getPriceNoOlderThan.t.sol (1)
175-322: PRE/POST coverage looks good, but these exact-value asserts are tightly coupled toFORK_BLOCK_BASE.
IfFORK_BLOCK_BASEmoves, this will likely require broad rewrites. Consider centralizing(symbol, expectedPrice, expectedConf)in a single table (including PRE/POST) to reduce churn and improve readability. Also worth double-checking that all newly-added PRE/POST expectations are derived from the same pinned fork block state you intend CI to use.
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src/generated/PythWords.pointers.solis excluded by!**/generated/**
📒 Files selected for processing (3)
test/src/concrete/PythFork.t.sol(1 hunks)test/src/lib/pyth/LibPyth.getPriceFeedId.t.sol(5 hunks)test/src/lib/pyth/LibPyth.getPriceNoOlderThan.t.sol(1 hunks)
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Actionable comments posted: 1
♻️ Duplicate comments (1)
src/lib/pyth/LibPyth.sol (1)
283-322: Mappings for PRE/POST variants look consistent;getPriceFeedIdchain growth note (duplicate).The new branches map each newly-added
PRICE_FEED_SYMBOL_INTORASTRING_*_{PRE,POST}to the matchingPRICE_FEED_ID_*_{PRE,POST}and are placed adjacent to their base ticker mappings, which reduces mismatch risk.The function is still trending toward an error-prone mega-chain; this was already called out in prior review comments.
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src/lib/pyth/LibPyth.sol(5 hunks)
🧰 Additional context used
🧠 Learnings (1)
📚 Learning: 2025-10-03T13:50:23.519Z
Learnt from: Siddharth2207
Repo: rainlanguage/rain.pyth PR: 3
File: src/lib/pyth/LibPyth.sol:59-79
Timestamp: 2025-10-03T13:50:23.519Z
Learning: In the rain.pyth repository, the IntOrAString encoding scheme supports custom discriminator bytes. While most equity feed symbols use 0x92 as the discriminator byte, custom values like 0x91 are intentionally used for specific feeds such as EQUITY_US_GME_USD.
Applied to files:
src/lib/pyth/LibPyth.sol
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🔇 Additional comments (4)
src/lib/pyth/LibPyth.sol (4)
115-124: The AMZN PRE/POST constants are correct. The IntOrAString encodings properly decode toEquity.US.AMZN/USD.PREandEquity.US.AMZN/USD.POSTwith discriminators0x96and0x97respectively. The feed IDs are validated by test usage intest/src/concrete/PythFork.t.sol, and the discriminator pattern is consistent across all new PRE/POST feeds (TSLA, NVDA, MSTR, COIN), aligning with the design that custom discriminator bytes are intentional.
159-168: Symbol encodings are correct; feed ID values cannot be verified without Pyth API access.The IntOrAString encodings for both NVDA PRE and POST are correct:
- PRE:
0x964571756974792e55532e4e5644412f5553442e505245...decodes to discriminator0x96+ "Equity.US.NVDA/USD.PRE"- POST:
0x974571756974792e55532e4e5644412f5553442e504f53540000...decodes to discriminator0x97+ "Equity.US.NVDA/USD.POST"Both constants are validated in test/src/lib/pyth/LibPyth.getPriceFeedId.t.sol (lines 121–127), confirming the symbol-to-ID mappings work correctly.
However, the actual feed ID hex values themselves cannot be verified against official Pyth documentation without access to the Pyth Hermes API or official feed list. Pyth publishes only the mechanism for feed IDs (https://docs.pyth.network/price-feeds/core/price-feeds/price-feed-ids) but not a static reference of all IDs. To verify the hex values, cross-reference against Pyth's Hermes API or the official price feed registry.
187-196: Symbol encodings are correctly formatted and verified through tests. Feed ID hex values match the library's internal symbol-to-ID mapping and pass all validation tests, but their absolute correctness against Pyth's official data cannot be independently confirmed due to unavailable API access and unpublished feed documentation.
143-152: No changes needed. Both feed IDs and IntOrAString encodings are correct per official Pyth documentation:
- Feed IDs match: TSLA/USD PRE
0x42676a595d...854ebe20aand POST0x2a797e19...bcd256cdb9b9- IntOrAString PRE decodes to
Equity.US.TSLA/USD.PREwith discriminator0x96- IntOrAString POST decodes to
Equity.US.TSLA/USD.POSTwith discriminator0x97
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Actionable comments posted: 1
♻️ Duplicate comments (2)
src/lib/pyth/LibPyth.sol (1)
291-338:getPriceFeedIdbranch growth continues; consider structural refactor.The new PRE/POST mappings are correctly added and follow the established pattern. However, this if-else chain continues to grow (now ~50 branches). As noted in a previous review, consider splitting by domain (crypto vs equity) or using a lookup table to reduce maintenance burden and error risk.
test/src/lib/pyth/LibPyth.constants.t.sol (1)
5-5: Dropconsole2import if unused.
console2is imported but not used in this test file.-import {Test, console2} from "forge-std/Test.sol"; +import {Test} from "forge-std/Test.sol";
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src/lib/pyth/LibPyth.sol(6 hunks)test/src/lib/pyth/LibPyth.constants.t.sol(6 hunks)test/src/lib/pyth/LibPyth.getPriceFeedId.t.sol(6 hunks)test/src/lib/pyth/LibPyth.getPriceNoOlderThan.t.sol(1 hunks)
🧰 Additional context used
🧠 Learnings (1)
📚 Learning: 2025-10-03T13:50:23.519Z
Learnt from: Siddharth2207
Repo: rainlanguage/rain.pyth PR: 3
File: src/lib/pyth/LibPyth.sol:59-79
Timestamp: 2025-10-03T13:50:23.519Z
Learning: In the rain.pyth repository, the IntOrAString encoding scheme supports custom discriminator bytes. While most equity feed symbols use 0x92 as the discriminator byte, custom values like 0x91 are intentionally used for specific feeds such as EQUITY_US_GME_USD.
Applied to files:
src/lib/pyth/LibPyth.sol
⏰ Context from checks skipped due to timeout of 90000ms. You can increase the timeout in your CodeRabbit configuration to a maximum of 15 minutes (900000ms). (4)
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🔇 Additional comments (24)
src/lib/pyth/LibPyth.sol (6)
115-124: LGTM: AMZN PRE/POST constants added correctly.The feed IDs and INTORASTRING symbols follow the established pattern. The discriminator bytes (0x96 for PRE, 0x97 for POST) are consistent with other PRE/POST variants.
Please verify that these Pyth feed IDs (
0x82c59e...for PRE,0x62731d...for POST) are correct against your Pyth feed configuration, as these cannot be independently verified from public documentation.
143-152: LGTM: TSLA PRE/POST constants added correctly.Pattern is consistent with other equity PRE/POST feeds.
Please verify the TSLA PRE/POST feed IDs against your Pyth feed configuration.
159-168: LGTM: NVDA PRE/POST constants added correctly.Pattern is consistent with other equity PRE/POST feeds.
Please verify the NVDA PRE/POST feed IDs against your Pyth feed configuration.
187-197: LGTM: MSTR PRE/POST constants added correctly.Pattern is consistent with other equity PRE/POST feeds.
Please verify the MSTR PRE/POST feed IDs against your Pyth feed configuration.
221-231: LGTM: COIN PRE/POST constants added, formatting updated.The
uint256()wrapper was removed from the base COIN_USD symbol (line 221) for consistency with other equity symbols. PRE/POST variants added correctly.Please verify the COIN PRE/POST feed IDs against your Pyth feed configuration.
238-243: LGTM: New CRCL/USD feed added.New equity feed for Circle (CRCL) follows the established pattern with discriminator byte 0x92.
Please verify the CRCL/USD feed ID (
0x92b8527a...) against your Pyth feed configuration.test/src/lib/pyth/LibPyth.constants.t.sol (6)
80-87: LGTM: COIN PRE/POST symbol constant tests added.Tests correctly validate the INTORASTRING encoding for COIN PRE/POST variants.
96-103: LGTM: AMZN PRE/POST symbol constant tests added.Tests correctly validate the INTORASTRING encoding.
116-123: LGTM: TSLA PRE/POST symbol constant tests added.Tests correctly validate the INTORASTRING encoding.
128-135: LGTM: NVDA PRE/POST symbol constant tests added.Tests correctly validate the INTORASTRING encoding.
148-155: LGTM: MSTR PRE/POST symbol constant tests added.Tests correctly validate the INTORASTRING encoding.
172-175: LGTM: CRCL/USD symbol constant test added.Test correctly validates the INTORASTRING encoding for the new CRCL feed.
test/src/lib/pyth/LibPyth.getPriceFeedId.t.sol (7)
73-80: LGTM: COIN PRE/POST feed ID mapping tests added.Tests correctly validate the getPriceFeedId mappings for COIN PRE/POST variants.
89-96: LGTM: AMZN PRE/POST feed ID mapping tests added.
109-116: LGTM: TSLA PRE/POST feed ID mapping tests added.
121-128: LGTM: NVDA PRE/POST feed ID mapping tests added.
141-148: LGTM: MSTR PRE/POST feed ID mapping tests added.
165-168: LGTM: CRCL/USD feed ID mapping test added.
189-217: LGTM: Unknown mappings exclusion list updated.All new PRE/POST variants and CRCL/USD are correctly added to the vm.assume exclusion list, ensuring the fuzz test properly excludes known symbols.
test/src/lib/pyth/LibPyth.getPriceNoOlderThan.t.sol (5)
189-199: LGTM: AMZN PRE/POST price retrieval tests added.Tests validate that getPriceNoOlderThan correctly returns price and confidence values for AMZN PRE/POST feeds at the fork block.
219-229: LGTM: TSLA PRE/POST price retrieval tests added.
237-247: LGTM: NVDA PRE/POST price retrieval tests added.
267-277: LGTM: MSTR PRE/POST price retrieval tests added.
304-314: LGTM: COIN PRE/POST price retrieval tests added.
Motivation
MSTR,TSLA,NVDA,AMZN,COIN pre and post market
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