valkey: fix null array, null CRLF, big number and blob error replies - #39544
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I reviewed this PR and didn't find bugs — the RESP fixes look correct and each has both a Rust unit test and a JS mock-server test. Deferring to a human because the PR ships user-visible behavior changes the author explicitly flagged for a maintainer decision: err.code for server error replies moves from ERR_REDIS_INVALID_RESPONSE to the new ERR_REDIS_SERVER_ERROR, big numbers now always resolve as strings, and ! blob errors now reject instead of resolving.
What was reviewed:
*-1→RESPValue::Nulland_junk→InvalidNullin both the tree parser andReplyScanner::scan_one; prefix loop confirms every proper prefix still reads as a short read.server_error()covers bothErrorandBlobError; the one call site inhandle_responseand the nested-error arm inresp_value_to_js_with_optionsboth route through it, andhandle_subscribe_responseintentionally still matches onlyRESPValue::Error(_)(the PR body notes that path stays a connection failure).ERR_REDIS_SERVER_ERRORappended at the tail ofErrorCode.tsso generated Rust discriminants don't shift; grepped tests for the old code — no existing test assertsERR_REDIS_INVALID_RESPONSEon a server error reply.native_test_shims.rsis#[cfg(test)]-only via the module gate inlib.rs.
Extended reasoning...
Overview
This PR fixes five RESP reply-decoding defects in RedisClient: RESP2 null array (*-1) now decodes as null instead of an empty array; RESP3 null (_) now rejects trailing bytes before CRLF in both the tree parser and the incremental reply scanner; big numbers always surface as strings (or Buffers under getBuffer) instead of losing precision above 2^53; blob errors (!) now reject the command promise the same way simple errors (-) do via a new RESPValue::server_error() helper; and server error replies now carry a new ERR_REDIS_SERVER_ERROR code instead of ERR_REDIS_INVALID_RESPONSE. It touches the protocol crate, the JSC bridge, ErrorCode.ts, docs, and adds both #[cfg(test)] Rust unit tests and JS mock-server tests.
Security risks
None. The change tightens validation of server-controlled bytes (rejecting _junk) rather than loosening it, and the WTF__parseDouble shim is compiled only into the crate's test binary.
Level of scrutiny
Medium-high. The protocol changes are small and mechanically verifiable against the RESP3 spec, but four of the five fixes are user-visible behavior changes on a shipped API. The PR body itself calls out that the error-code rename "needs a maintainer decision," and REVIEW.md's API-design section reserves that call for a human.
Other factors
Test coverage is thorough — each fix has a byte-level Rust test with a proper-prefix short-read loop, plus an end-to-end JS test against the in-process mock server, and the pre-existing torn-blob-error tests are updated to expect rejection. I grepped for other tests asserting the old behavior and found none that would break. The subscriber-mode RESPValue::Error(_) match in handle_subscribe_response is intentionally left as-is (called out in the PR body). The implementation looks correct; the only reason not to auto-approve is that the visible API shape change should get a human sign-off.
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Adopted. This PR holds the decoder fix and the BigInt conversion, and its build is green. I rebased the branch onto main earlier, which fixed the binary-size failure, and pushed the small review fixes on top of your commits. #39573 is stacked on this branch and holds only the part split out of here: ERR_REDIS_SERVER_ERROR plus the subscriber-mode arm, with tests and the matching JSDoc line. Its build is green apart from the darwin shard, whose failing tests (node-tls-server, h2-conformance) are red on main as well and reported separately. Merge this one first. I will rebase #39573 onto main once this lands. |
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I re-reviewed after the split and didn't find any bugs in the re-scoped diff. The earlier subscriber-mode ServerError note is now out of scope here (it lives in #39573, and this PR keeps ERR_REDIS_INVALID_RESPONSE for server replies). Deferring to a human because the BigNumber return type is a user-visible change the description flags as a pending maintainer call (string vs BigInt), and ! switching from resolve-with-Error to reject is likewise observable.
What was reviewed:
RESPValue::BlobErrordeletion — grepped every match site; all remainingRESPValue::Errorarms invalkey.rs(HELLO, SELECT, subscriber, command reply) now cover!too, none were left dangling._junkrejection added to both the tree parser andReplyScanner::scan_one, so the two paths stay in agreement; prefix loop confirms short reads still returnNeedMoreData.*-1→RESPValue::Null— the scanner already treated it asSome(0)so no scanner change needed; nested-in-array case covered.native_test_shims.rsis#[cfg(test)]-gated vialib.rsand never links into the real binary.
Extended reasoning...
Overview
Four RESP decode fixes in src/valkey/valkey_protocol.rs (null array *-1 → Null, _ requires bare CRLF in both parser and scanner, ! blob error produces RESPValue::Error instead of the deleted BlobError variant) plus one JS-bridge change in protocol_jsc.rs (BigNumber always converts via valkey_str_to_js_value so it returns a string, or a Buffer under getBuffer). A #[cfg(test)] unit-test module with byte vectors and a prefix-is-partial loop, a test-only WTF__parseDouble shim, the crate added to MIRI_CRATES, a new describe.concurrent block in valkey-incremental-scan.test.ts against the existing mock server, and two doc lines.
Change since my last review
The previous run flagged the subscriber-mode arm at valkey.rs:1175 for using InvalidResponse instead of the then-new ServerError. That commit has since been split into stacked PR #39573; this PR now intentionally keeps ERR_REDIS_INVALID_RESPONSE for server error replies (stated in the description), so the concern no longer applies here and the thread is resolved. The head commit adds nested-null-array and torn-_junk prefix coverage.
Security risks
None identified. Input is server bytes; the change tightens validation (_junk now errors instead of decoding as null) and does not touch allocation sizing, bounds checks, or the MAX_BULK_LEN/MAX_LINE_LEN/prealloc-budget guards. The #[unsafe(no_mangle)] shim is compiled only into the crate's test binary.
Level of scrutiny
Moderate. The parser edits are small and each has both a Rust byte-vector test and a JS mock-server test that fail on main. What warrants a human look is the API surface: BigNumber changes from number-when-it-fits to always-string (the description explicitly names string-vs-BigInt as a pending maintainer decision), and ! changes from resolving with an Error object to rejecting the promise. Both are correct per RESP3 but observable to users.
Other factors
I confirmed no RESPValue::BlobError references remain anywhere in src/ (the only other BlobError hits are the unrelated ReadFromBlobError in SSLConfig.rs), and that RESPType::BlobError (the ! wire byte) is intentionally kept. The ReplyScanner and tree parser were both updated for the _ check, so they cannot disagree. The test-file refactor hoists createReplyServer/withClient to module scope without changing the existing torn-read tests' semantics beyond the blob-error case, which now correctly expects a rejection.
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Actionable comments posted: 2
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Inline comments:
In `@src/valkey/valkey_protocol.rs`:
- Around line 399-402: Update array-length handling in the RESP parser and
ReplyScanner::scan_one so only -1 produces RESPValue::Null; reject lengths below
-1 with RedisError::InvalidArray. Add coverage for the malformed “*-2\r\n” frame
in both parser and scanner paths.
Apply the same fix in `@src/valkey/native_test_shims.rs` around lines 10 - 15.
- Around line 91-92: Update the documentation comment for RESPValue::Error to
describe the server error message carried by simple and blob error replies
without claiming they reject the outer command; preserve the distinction between
the “-” and “!” reply forms.
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docs/runtime/redis.mdxscripts/rust-miri.tssrc/runtime/valkey_jsc/protocol_jsc.rssrc/valkey/lib.rssrc/valkey/native_test_shims.rssrc/valkey/valkey_protocol.rstest/js/valkey/valkey-incremental-scan.test.ts
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A nested error element resolves as part of the outer value, so the variant doc no longer says the reply rejects a command.
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Inline comments:
In `@docs/runtime/redis.mdx`:
- Line 345: Update the Big number response description near the RESP3
documentation to describe getBuffer as returning the complete payload bytes,
replacing the inaccurate “digits” wording while preserving the existing
explanation of BigInt and string responses.
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docs/runtime/redis.mdxsrc/jsc/JSValue.rssrc/jsc/bindings/bindings.cppsrc/jsc/bindings/headers.hsrc/runtime/valkey_jsc/protocol_jsc.rssrc/valkey/valkey_protocol.rstest/js/valkey/valkey-incremental-scan.test.ts
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from_js_host_call already turns an empty result into an error, and the digit check before it admits only text that StringToBigInt parses, so the value after the call is never empty.
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I reviewed this PR again after 502c84e, c2dd448 and 90b5905 and found no further issues — both earlier findings are addressed. Because it changes a user-visible return type (big number replies now resolve as BigInt) and adds a new JSC FFI binding, a human sign-off is still worthwhile.
Checked: RESPValue::BlobError deletion leaves no dangling match arms — every RESPValue::Error site in valkey.rs (HELLO, SELECT, subscriber, command reject) now handles ! the same as -; big_int_from_decimal pre-validates -?[0-9]+ so stringToBigInt cannot return empty-without-throw and the from_js_host_call contract holds; the _ strictness check is mirrored in both the tree parser and ReplyScanner::scan_one; the new redis.d.ts JSDoc matches the conversion table in docs/runtime/redis.mdx.
Extended reasoning...
Overview
Four RESP decoder fixes in the Valkey client: *-1 → null (was []), _ requires bare CRLF (was accepting _junk), ( big numbers → BigInt (was lossy number above 2^53), and ! blob errors reject the command (was resolving with an Error). The RESPValue::BlobError variant is deleted so ! and - are handled identically at every match site. One new C++ binding (JSC__JSValue__bigIntFromLatin1) wraps JSBigInt::stringToBigInt. Docs and redis.d.ts JSDoc updated. ~130 lines of new mock-server tests exercise every changed frame both whole and one-byte-per-read.
Security risks
None identified. Input is server-originated RESP bytes; the changes tighten validation (_junk now fails) rather than loosen it. The new FFI passes a validated -?[0-9]+ Latin-1 slice to stringToBigInt; the slice is live for the call duration and length-bounded by the existing MAX_LINE_LEN. No new allocation-size or bounds concerns beyond what the parser already enforces.
Level of scrutiny
Medium-high. The parser changes are small and mechanical, and the enum-variant deletion is compiler-checked. But the BigInt conversion is a user-visible API change (breaking for anyone reading a ( reply as a number today, however rare), and it introduces a new JSC binding — both are the kind of thing REVIEW.md's "API design" section says needs maintainer agreement. A maintainer has already adopted the PR, which is a good signal, but that is not the same as a review.
Other factors
This PR has been through two prior automated review rounds; both findings (subscriber-mode error code, dead is_empty() guard) were addressed — the first by moving the ServerError split to stacked PR #39573, the second in 502c84e. All CodeRabbit threads are resolved. The test file drives the built binary through a real socket and covers torn reads, nested nulls, HELLO error paths, and getBuffer — coverage is thorough. The *-2 strictness question was reasonably deferred as out of scope. Nothing outstanding blocks merge from a correctness standpoint; the deferral is only for human sign-off on the return-type change.
#39544 made the RESP null parser return InvalidNull, so it is no longer dead. The other four unconstructed variants stay removed.
### Problem - A server error reply (`-WRONGTYPE ...` or a `!` blob error) rejects with `err.code === "ERR_REDIS_INVALID_RESPONSE"`. `src/runtime/valkey_jsc/protocol_jsc.rs:94` passes `RedisError::InvalidResponse` for `RESPValue::Error`. - The same code means a reply the client cannot parse (`_junk`, nesting depth). A caller cannot tell them apart. - The subscriber arm at `src/runtime/valkey_jsc/valkey.rs:1164` passes `InvalidResponse` too. ### Fix - `ERR_REDIS_SERVER_ERROR` goes at the tail of `ErrorCode.ts`, so no discriminant moves. The new `RedisError::ServerError` maps to it. - Both `RESPValue::Error` sites now pass `ServerError`: the top-level rejection, an Error element nested in an array (the `EXEC` shape), and the subscriber arm. The message text is unchanged. - Breaking: `err.code` for a server error reply changes. Three public repos compare against the old code (see Notes). The docs and the `send()` JSDoc name the new code. - Verified: `test/js/valkey/valkey-incremental-scan.test.ts`, 41 pass here, 11 fail with the `src/` of main. Also `reliability/resp-nesting-depth.test.ts` and a real redis 8.0.2. ### Background - RESP is the Redis wire protocol. A `-` reply is a simple error, a `!` reply is a blob error. Since #39544 both parse to `RESPValue::Error`. - `resp_value_to_js_with_options` (`protocol_jsc.rs`) turns a reply into a JS value. For `RESPValue::Error` it calls `valkey_error_to_js`, which maps a `RedisError` variant to an `ERR_*` code. - A subscriber is a client that sent `SUBSCRIBE`. On an error reply `handle_response` (`valkey.rs`) calls `fail`. `fail` rejects every pending command with the given variant and closes the connection. - The build generates the C++ and Rust `ERR_*` tables from `ErrorCode.ts` in file order. <details><summary>Notes</summary> - The 11 tests that fail without the `src/` change: the `-ERR` and `!` frames in both send modes, the two nested element tests, the subscriber-mode test, and the four torn blob error tests. They all assert the new code. The subscriber-mode test also fails with only the `valkey.rs` line removed. - Public repos that compare against `ERR_REDIS_INVALID_RESPONSE` for a server error: HazelChat/hazel, stella/stella, petarzarkov/dunx. - Real redis 8.0.2: `LPUSH` on a string key rejects with `ERR_REDIS_SERVER_ERROR` and the unchanged `WRONGTYPE` message. An error inside an `EXEC` reply resolves as an Error element with the same code. - `ERR_REDIS_INVALID_RESPONSE` is still used for a reply the client could not parse (`_junk`, nesting depth, line too long, a bad type byte). Those paths are not changed. - Not changed: a subscriber still fails the whole connection on an error reply, and the command that reply answers is left unsettled. #32858 changes that path. The subscriber test here reads the code from the command still in flight behind it, which holds before and after #32858. - Docs: the bullet in `docs/runtime/redis.mdx` says that the reply rejects one command or, in subscriber mode, closes the connection. #39576 asked for the subscriber part. It was lost when the branch was rebuilt on the reduced #39544, and commit 4 restores it. `packages/bun-types/redis.d.ts` names the code in the `send()` JSDoc. - History: this PR was stacked on #39544 and at first carried the decoder fix too. #39544 is merged as 24c0063. The branch is now rebased onto main. The rebase did not change the diff. Commit 1 is @alii's commit from the earlier version of #39544, with its test hunks redone on top of the table-driven tests. Commits 2 to 4 were added during adoption. </details> <!-- robobun:evidence:begin --> --- **[review]** gate passed · iteration 0 · 7 files touched <details><summary>fails on main (without fix)</summary> ```console ASAN without fix: 11 FAILED $ BUN_DEBUG_QUIET_LOGS=1 bun scripts/build.ts --profile=debug --quiet test "--reporter=junit" "--reporter-outfile=/tmp/mechgate.xml" test/js/valkey/valkey-incremental-scan.test.ts bun test v1.4.0 (4c68990) test/js/valkey/valkey-incremental-scan.test.ts: (pass) Valkey reply decoding, frame sent whole > RESP3 null with trailing bytes (_junk) [45.87ms] (pass) Valkey reply decoding, frame sent whole > RESP2 null array (*-1) [78.52ms] (pass) Valkey reply decoding, frame sent whole > RESP2 null array nested in an array [62.81ms] (pass) Valkey reply decoding, frame sent whole > RESP2 null bulk string ($-1) [62.40ms] (pass) Valkey reply decoding, frame sent whole > RESP3 null (_) [62.22ms] 162 | expect(typeof (outcome as { value: unknown }).value).toBe(typeof expected.value); 163 | } else { 164 | expect(outcome).toHaveProperty("error"); 165 | const { error } = outcome as { error: Error & { code: string } }; 166 | expect(error).toBeInstanceOf(Error); 167 | expect(error.code).toBe(expected.rejects.code); ^ error: expect(received).toBe(expected) Expected: "ERR_REDIS_SERVER_ERROR" Received: "ERR_ ... (truncated) release without fix: all passed bun test v1.4.0-canary.1 (4c6ff0c) test/js/valkey/valkey-incremental-scan.test.ts: (pass) Valkey reply decoding, frame sent whole > RESP3 null with trailing bytes (_junk) [2.45ms] (pass) Valkey reply decoding, frame sent whole > RESP2 null array (*-1) [3.60ms] (pass) Valkey reply decoding, frame sent whole > RESP2 null array nested in an array [3.31ms] (pass) Valkey reply decoding, frame sent whole > RESP2 null bulk string ($-1) [3.38ms] (pass) Valkey reply decoding, frame sent whole > RESP3 null (_) [3.56ms] (pass) Valkey reply decoding, frame sent whole > big number above 2^53 [3.52ms] (pass) Valkey reply decoding, frame sent whole > negative big number [3.64ms] (pass) Valkey reply decoding, frame sent whole > big number above 2^64 [3.66ms] (pass) Valkey reply decoding, frame sent whole > big number with a non-integer payload [3.76ms] (pass) Valkey reply decoding, frame sent whole > simple error (-ERR) [3.87ms] (pass) Valkey reply decoding, frame sent whole > blob error (!) [3.90ms] (pass) Valkey reply decoding > error reply (-) to HELLO rejects queued commands with the server text [1.96ms] (pass) Valkey reply decoding > error reply (!) to HELLO rejects queued ... (truncated) ``` </details> <details><summary>passes on PR (with fix)</summary> ```console ASAN with fix: all passed $ BUN_DEBUG_QUIET_LOGS=1 bun scripts/build.ts --profile=debug --quiet test "--reporter=junit" "--reporter-outfile=/tmp/mechgate.xml" test/js/valkey/valkey-incremental-scan.test.ts bun test v1.4.0 (4c68990) test/js/valkey/valkey-incremental-scan.test.ts: (pass) Valkey reply decoding, frame sent whole > RESP3 null with trailing bytes (_junk) [49.15ms] (pass) Valkey reply decoding, frame sent whole > RESP2 null array (*-1) [84.60ms] (pass) Valkey reply decoding, frame sent whole > RESP2 null array nested in an array [67.49ms] (pass) Valkey reply decoding, frame sent whole > RESP2 null bulk string ($-1) [66.94ms] (pass) Valkey reply decoding, frame sent whole > RESP3 null (_) [66.75ms] (pass) Valkey reply decoding, frame sent whole > big number above 2^53 [41.64ms] (pass) Valkey reply decoding, frame sent whole > negative big number [43.01ms] (pass) Valkey reply decoding, frame sent whole > big number above 2^64 [44.06ms] (pass) Valkey reply decoding, frame sent whole > big number with a non-integer payload [44.02ms] (pass) Valkey reply decoding, frame sent whole > simple error (-ERR) [43.74ms] (pass) Valkey reply decoding, frame sent whole > blob error (!) [40.86ms] ... (truncated) release with fix: all passed $ bun scripts/build.ts --profile=release [configured] bun-profile → bun (stripped) in 647ms (unchanged) ninja: Entering directory `/workspace/bun/build/release' [1/80] gen ErrorCode+*.h [2/24] gen generated_host_exports.rs generated_host_exports.rs: 92 exports (host=3, lazy=10, generic=79, rust=0); 241 extern-C blocks audited [3/24] gen JS modules (bundle-modules) Preprocess modules (7828ms) Bundle modules (54ms) Postprocesss modules (33ms) Bundle Functions (734ms) Generate Code (26ms) [8.69s] Bundled "src/js" for production 2628 kb 198 internal modules 13 native modules 92 internal functions across 17 files [3/9] cargo bun_bin → libbun_rust.a (--target x86_64-unknown-linux-gnu) nightly-2026-07-20-x86_64-unknown-linux-gnu unchanged - rustc 1.99.0-nightly (9f36de775 2026-07-19) �[1m�[92m Compiling�[0m bun_core v0.0.0 (/workspace/bun/src/bun_core) �[1m�[92m Compiling�[0m bun_errno v0.0.0 (/workspace/bun/src/errno) �[1m�[92m Compiling�[0m bun_ptr v0.0.0 (/workspace/bun/src/ptr) �[1m�[92m Compiling�[0m bun_boringssl_sys v0.0.0 (/workspace/bun/src/boringssl_sys) �[1m�[92m Compiling�[0m bun_safety v0.0.0 (/workspace/bun/src/safety) �[1m�[92m C ... (truncated) ``` </details> <details><summary>diff hotspot</summary> ``` docs/runtime/redis.mdx | 1 + packages/bun-types/redis.d.ts | 2 +- src/jsc/bindings/ErrorCode.ts | 1 + src/runtime/valkey_jsc/protocol_jsc.rs | 7 +- src/runtime/valkey_jsc/valkey.rs | 2 +- src/valkey/valkey_protocol.rs | 2 + test/js/valkey/valkey-incremental-scan.test.ts | 132 +++++++++++++++++-------- 7 files changed, 97 insertions(+), 50 deletions(-) ``` </details> **gate history** · 2 passed · 0 rejected · iteration 0 <details><summary>evidence per changed file</summary> ``` file reads edits tests docs/runtime/redis.mdx 1 1 0 packages/bun-types/redis.d.ts 0 0 0 src/jsc/bindings/ErrorCode.ts 0 0 0 src/runtime/valkey_jsc/protocol_jsc.rs 0 0 0 src/runtime/valkey_jsc/valkey.rs 0 0 0 src/valkey/valkey_protocol.rs 0 0 0 test/js/valkey/valkey-incremental-scan.test.ts 0 0 0 ``` </details> <!-- robobun:evidence:end --> --------- Co-authored-by: Alistair Smith <hi@alistair.sh>
#39544 made the RESP null parser return InvalidNull, so it is no longer dead. The other four unconstructed variants stay removed.
#39544 made the RESP null parser return InvalidNull, so it is no longer dead. The other four unconstructed variants stay removed.
#39544 made the RESP null parser return InvalidNull, so it is no longer dead. The other four unconstructed variants stay removed.
2 participants
The problem
The RESP reply decoder in RedisClient gets four replies wrong. These items were carried out of #34829 and re-derived on current main.
A RESP2 null array (
*-1) decodes as an empty array. Bun's client only speaks RESP3 and fails the connection when HELLO 3 is refused, so Redis does not send*-1to it unless a user moves the connection withsend("RESET")orsend("HELLO", ["2"]). This is spec conformance, not a bug reachable through normal use of this client. The correct value is null.A RESP3 null (
_) accepts any bytes before the CRLF._junkdecodes as null. It is a protocol error.A big number (
() becomes a JS number when the digits fit in an i64. Values above 2^53 lose precision.(9007199254740993resolves as 9007199254740992. The RESP3 spec says a language with a big number type should return one, and BigInt is that type in JS. node-redis returns a BigInt by default. This PR does the same. A string option can come later if asked.A blob error (
!) resolves the command promise with an Error object. A simple error (-ERR) rejects it. Both must reject.Redis core never emits
!and emits(only for values above i64::MAX, so these two replies reach users only through modules, Lua scripts or proxies.What changed
*-1decodes as null.$-1already did._requires a bare CRLF in the tree parser and in the reply scanner. Both return InvalidNull for_junk.A big number whose payload is an integer literal (optional
-, then digits) resolves as a BigInt. Modules and Lua can put any text after(, so any other payload resolves as a string and the decoder never throws. With getBuffer it resolves as a Buffer of the digits. Plain:integers stay JS numbers. One C++ binding is added for BigInt from a decimal literal, since none existed.The
RESPValue::BlobErrorvariant is deleted. The!parse arm keeps its length checks and producesRESPValue::Error, so every match site that handles-handles!the same way: command reject, HELLO, SELECT, subscribe and subscriber mode. Server error replies keep the code ERR_REDIS_INVALID_RESPONSE. A separate PR proposes a new code for them.The docs type conversion list now names null arrays and big numbers.
Visible changes
On a RESP2 connection, BLPOP, BRPOP and BZPOPMIN timeouts and LPOP with COUNT on a missing key now yield null instead of []. Bun negotiates RESP3, so this needs a server that refused HELLO 3 or a connection moved with RESET or HELLO 2. It is user visible where it applies.
A
(reply that used to be a lossy JS number (or, in an earlier commit of this PR, a string) is now a BigInt._junknow fails the connection instead of resolving null.A
!reply now rejects instead of resolving with an Error object.Tests
test/js/valkey/valkey-incremental-scan.test.ts drives the built binary through an in-process mock server over a socket. Each frame is sent whole and again one byte per socket read, so both the tree parser and the reply scanner see every torn prefix. The frames are
*-1,*-1nested inside an array,$-1,_,_junk, big numbers above 2^53, negative and above 2^64, a big number with a non-integer payload,-ERRand!. Each test asserts the decoded value or the rejection code and message, and that the connection still answers PING afterwards where it should. Further tests cover getBuffer on a big number, a-and a!reply to HELLO as seen by a queued command, and a-or!element nested in an array. The torn blob error tests now expect a rejection.On the current release these fail:
*-1and nested*-1,_junk, the three BigInt cases,!, the HELLO!case and getBuffer on a big number, in both the whole and the byte by byte mode.$-1,_,(12abc,-ERRand the HELLO-case pin behaviour the release already has.The crate has no
#[test]module. The decoder is tested only through the binary.connect() itself still rejects with a generic "Connection closed" when HELLO fails. That is pre-existing and not changed here.
Not in this PR
The
read_valuereturn type stays as it is. The parser loop is not restructured.The error code for server error replies is unchanged. It is proposed in a stacked PR.