Package Manifest - Intentionally Invalid, Conflict Markers in JSON
A package manifest left mid-merge, so the file is intentionally invalid JSON: conflict markers sit inside the dependencies object. Any tool that reads manifests has to fail on this with a message about the conflict rather than a bare syntax error at line 5.
{
"name": "@sample-org/ledger-web",
"version": "4.3.0",
"dependencies": {
<<<<<<< HEAD
"chart-kit": "3.1.0",
"decimal-lite": "2.4.1"
=======
"chart-kit": "3.0.7",
"decimal-lite": "2.5.0"
>>>>>>> feature/retry-budget
}
}
Specifications
- Seed
- 20260807
- Intentionally Invalid
- true
- Conflict Style
- merge
- Repository Name
- web/package.json
- Regions
- 1
- Parses As Json
- false
- Line Endings
- LF
- Encoding
- UTF-8
Testing contract
Expected to fail- Scenario
- Load a JSON file that still contains unresolved conflict markers.
- Expected result
- Parsing fails; a good implementation detects the <<<<<<< marker and reports an unresolved merge conflict rather than only 'unexpected token' at line 5.
What is a .json file?
JSON (JavaScript Object Notation) is a lightweight, text-based data-interchange format representing objects, arrays, strings, numbers, booleans, and null. It is language-independent, human-readable, and the dominant format for web APIs and configuration. It requires a single well-formed root value.
How to use this file
Use an example JSON file to test parsers and serializers, schema validation, Unicode and number-precision handling, and API request or response processing.
How to use this file for testing
“Package Manifest - Intentionally Invalid, Conflict Markers in JSON” is a deterministic Novus Examples fixture for Error handling, Visual diff / regression, Code parsing. Deliberately corrupt and invalid files, clearly labelled, for testing how your tool fails.
Documented properties for this file: seed 20260807 · UTF-8 · LF. Compare results against paired or grouped companions on this page when present (clean↔damaged, searchable↔scanned, or format twins) so scores stay reproducible across runs.
Download the file once, keep the path stable in CI or local scripts, and treat the spec table as the contract: dimensions, seeds, field lists, and roles are intentional. Corrupt or invalid samples are labelled as such — expect parsers to fail loudly rather than silently accept them.
Diff and patch fixtures name their target paths and the exact edge case they exercise — rename, mode change, binary hunk, CRLF↔LF, or missing trailing newline. Apply or render them against the documented before-state; every author, path, and hash is fictional.
Code examples
import json
with open("conflict-in-package.json") as f:
data = json.load(f)
print(type(data), len(data))Related files
- diffCombined Diff - diff --cc With Two ParentsWhat `git show` prints for a merge commit: a `diff --cc` header, an index line naming three blobs, `@@@` hunk markers, and two prefix columns instead of one. The `++` line is the giveaway a reviewer is looking for — content that appears in the merge result but in neither parent.
- diffCombined Diff - Octopus Merge With Three ParentsAn octopus merge, so the hunk marker grows to `@@@@` and every line carries three prefix columns. Any parser that hard-codes `@@@` or assumes two columns reads the third column as the first character of the line's content.
- diffCombined Diff - Per-Parent mode LineWhen the file mode differs between the parents and the merge result, a combined diff adds a `mode a,b..result` line below the index line — a comma-separated shape that appears nowhere else in git's output. Parsers written for the single-parent `old mode`/`new mode` pair do not recognise it.
- txtMerge Conflict - diff3 Marker Style With Base SectionThe same conflict with `merge.conflictStyle=diff3`, which inserts the merge base between the two sides behind a row of pipes. Tools that split a conflict on `=======` alone silently fold the ancestor text into the ours side.
- txtMerge Conflict - Nested Markers From a Conflicted ResolutionSomeone committed a file that still contained conflict markers, and merging that commit produced markers inside markers. Region matchers that pair the first `<<<<<<<` with the first `=======` split this file in the wrong place and produce two overlapping regions that cannot both be resolved.
- mdMerge Conflict - Real Region Beside Marker LookalikesDocumentation about merge conflicts that quotes the markers inside a fenced code block, and then genuinely conflicts further down. A pre-commit hook that greps for `^<<<<<<<` reports two hits and blocks a clean commit; one that understands Markdown fences reports the one that matters.
Generated by generation/version_control.py. Free for any use, no attribution required — license.