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jsonparser
ProbeLabs23 findings · 123 requirementsWhen GetString addresses a JSON string value whose raw token is well formed, the parser shall return the corresponding decoded Go string value.
Specification
The requirement exactly as authored — its complete prose text and, where present, the formal FRETish sentence it compiles to.
When GetString addresses a JSON string value whose raw token is well formed, the parser shall return the corresponding decoded Go string value.
the parser shall always satisfy !addressed_value_is_string | !raw_string_token_is_well_formed | returns_getstring_decoded_value
Rationale & tags
Why this requirement exists, and how it is categorised.
Rationale & tags
Why this requirement exists, and how it is categorised.
GetString is the documented safe string helper and is expected to handle escaped and Unicode content correctly.
Verification & provenance
How this requirement was checked: the review trail, edit history, and the machine-analysis status terms (each ⓘ explains what it means).
Review
- Status
- approved
- Reviewer
- Buger · lead_engineer
- Reviewed
- Aug 20, 2026, 13:11 UTC
History
- Created
- Apr 13, 2026, 17:10 UTC · Created via CLI
- Modified
- Aug 20, 2026, 13:11 UTC · Buger
Change history
Every recorded revision of this requirement's source file — newest first, each with its commit message and the diff for that change.
Review history
Human and AI-agent approvals of this requirement — the 'why was this approved' lineage, each with the reviewer's justification and the code it cites.
- Claude:spec Conformance · AI agentApprovedSpec conformanceAug 20, 2026 · last monthREVIEW-8
The formula !addressed_value_is_string | !raw_string_token_is_well_formed | returns_getstring_decoded_value is met by GetString: it addresses the value via Get and rejects non-String types (returns NullValueError / 'Value is not a string' error, never a decoded value), grounding the !addressed_value_is_string guard. For a well-formed String token it returns the decoded value — raw bytes directly when no backslash is present (bytes.IndexByte(v,'\\')==-1) and otherwise ParseString(v), which Unescapes; a malformed escape makes ParseString return MalformedValueError, satisfying the !well_formed disjunct. TestGetString and the round-trip witness TestSetStringRoundTrip ('你好 🌍') confirm correct decoding.
Cited code (4)
Obligations
What this requirement must witness to be considered satisfied — the required evidence, and the tests that discharge each one.
3 obligations · 3 discharged
Browse the catalogueOutput identical regardless of collection ordering or runtime conditions.
GetString returns a different decoded string across calls on identical well-formed input, corrupting cache keys or byte-equality assumptions at the call site.
- nominalrequiredpresentCovered by 1 test
Behavior for unusual but valid input combinations.
GetString on a 1-char escaped body like an empty quoted string returns an out-of-range slice or wrong length, corrupting downstream string math at the caller.
- nominalrequiredpresentCovered by 1 test
Behavior specified for encoding and decoding round-trips.
GetString on a body containing invalid UTF-8 (e.g. a lone surrogate like \uDDDD) returns a Go string with invalid runes; the caller re-serializes it as invalid JSON or panics in encoding-aware downstream.
- nominalrequiredpresentCovered by 1 test
Formula evidence
The formal formula behind this requirement, the variables it is written over, and the tests that exercise it (each term is explained inline).
Formula evidence
The formal formula behind this requirement, the variables it is written over, and the tests that exercise it (each term is explained inline).
FRETish formula
the parser shall always satisfy !addressed_value_is_string | !raw_string_token_is_well_formed | returns_getstring_decoded_value
Variables
| Name | Type | Direction | Description |
|---|---|---|---|
| addressed_value_is_string | — | True when the addressed successful lookup value is a JSON string token. | |
| raw_string_token_is_well_formed | — | True when the addressed raw JSON string token is well formed and can be decoded. | |
| returns_getstring_decoded_value | — | True when GetString returns the addressed value as a decoded Go string. |
Witnesses· 4 scenarios total
- TestMCDC_SYS_REQ_002_Row1_TriggerFalseexercises 1 condition scenario
- TestGetStringexercises 3 condition scenarios
MC/DC truth table· 4 rows
Each row assigns the formula's conditions (T/F) and shows the Result— the formula's value for that input row, not a test pass/fail. A row proves a condition when flipping only that condition flips the outcome. The test that covers each row is linked.
mcdc:ignoreNo-actionfalse-result row satisfied by designUncoveredneeds a covering test| # | addressed_value_is_string | raw_string_token_is_well_formed | returns_getstring_decoded_value | Result | Proves | Covering test |
|---|---|---|---|---|---|---|
| 1 | F | T | F | T | addressed_value_is_string | |
| 2 | T | F | F | T | raw_string_token_is_well_formed | |
| 3 | T | T | F | F | addressed_value_is_string | |
| 4 | T | T | T | T | returns_getstring_decoded_value |
Its place
How this requirement connects — what proves it, what it affects, and what it rests on. Authored links only here; automatically derived links come from the audit index.
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Trace evidence
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Impact
Blast radius — authored trace links only (automatically derived links come from the audit index and aren't shown here).
Impact
Blast radius — authored trace links only (automatically derived links come from the audit index and aren't shown here).
If you change this
Files to re-check (2)
- fuzz.gofuzz.go
- parser.goparser.go
Tests to re-run (7)
- escape_test.goescape_test.go
- fuzz_native_test.gofuzz_native_test.go
- mcdc_spec_witnesses_test.gomcdc_spec_witnesses_test.go
- mcdc_supplement_test.gomcdc_supplement_test.go
- obligation_evidence_test.goobligation_evidence_test.go
- parser_test.goparser_test.go
- property_test.goproperty_test.go
What this rests on
Parent requirements (1)
Discussions
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