Go — Intentionally Invalid
Intentionally invalid Go syntax for gofmt/parser failure tests.
package main
func main( {
println("bad")
}
Specifications
- Language
- go
- Role
- intentionally invalid
- Valid
- false
What is a .go file?
Go (.go) is a plain-text source file for the Go programming language — a statically typed, compiled language from Google designed for simplicity and concurrency. It features goroutines and channels, a fast compiler, garbage collection, structs with methods, and interfaces, with a strict standard formatting.
How to use this file
Use an example .go file to test syntax highlighters, the Go compiler and vet, gofmt, linters, and parser or language-detection tooling.
How to use this file for testing
“Go — 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 · go · 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
go run intentionally-invalid-go.goRelated files
- cljClojure — Intentionally InvalidIntentionally invalid Clojure (unbalanced forms) for clj-kondo-style tests.

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

- 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.

- jlJulia — Intentionally InvalidIntentionally invalid Julia (unclosed function) for linter error-path tests.

Generated by generation/code_wave_g.py. Free for any use, no attribution required — license.