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 Testaroo 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))Generated by generation/version_control.py. Free for any use, no attribution required, license.
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.
