R — Intentionally Invalid
Intentionally invalid R (unclosed call) for parser tests.
df <- data.frame(id = 1:3
Specifications
- Language
- r
- Role
- intentionally invalid
- Valid
- false
What is a .r file?
R (.r / .R) source files contain scripts for the R statistical computing language, including data frames and tidy pipelines.
How to use this file
Use example .r files to test R language servers, highlighters, and script runners against small deterministic samples.
How to use this file for testing
“R — Intentionally Invalid” is a deterministic Novus Examples fixture for Error handling, Code parsing, Editor testing. Deliberately corrupt and invalid files, clearly labelled, for testing how your tool fails.
Documented properties for this file: intentionally invalid · r · intentionally invalid. 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.
This is a short, known-correct source file. Run it through your syntax highlighter, linter, formatter, tree-sitter grammar, or parser, and open it in the in-browser editor to tweak and re-download. Each snippet exercises comments, string escapes, literals, and language keywords.
Code examples
Rscript intentionally-invalid-r.rRelated files
- cljClojure — Intentionally InvalidIntentionally invalid Clojure (unbalanced forms) for clj-kondo-style tests.

- f90Fortran — Intentionally InvalidIntentionally invalid Fortran for compiler error fixtures.

- goGo — Intentionally InvalidIntentionally invalid Go syntax for gofmt/parser failure tests.

- hsHaskell — Intentionally InvalidIntentionally invalid Haskell (unterminated string) for parser failure tests.

- jsJavaScript — Intentionally Invalid SyntaxIntentionally corrupt JavaScript object literal — labelled invalid for error handling. Labelled intentionally invalid in title and description.

- jsonJSON — Intentionally Invalid (Lint Fixture)Intentionally invalid JSON (unquoted key + trailing) for strict parser failure tests. Labelled intentionally invalid in title and description.

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