Source code

The source-code category is a syntax-highlighting, linting, and parser fixture set: idiomatic hello-worlds plus realistic snippets across many languages, all original and documented. HTML, CSS, JavaScript, and TypeScript (shipped as .mts to sidestep the MPEG-TS .ts collision) cover the web front-end; Python, Ruby, PHP, and Shell the scripting side; Java, Kotlin, Swift, Go, and Rust the application languages; C and C++ the systems layer; SQL the database; and Wave G adds Julia, Haskell, Lua, R, Clojure, Fortran, and Nim. Intentionally invalid lint fixtures are clearly labelled. A tiny multi-language monorepo ZIP accompanies the set for unpack-then-lint pipelines. Everything text-previewable opens in the in-browser editor.

Filter source code on Browse · 125 files · 31 subcategories

Results start with a representative from each related test family. Use a card’s variant menu or the filters below to reach a specific format, profile, or failure case; every sample retains its own detail page and download.

Frequently asked questions

Which languages are included?

Hello-world and realistic snippets across many languages, including C#, Dart, Elixir, Zig, Scala, Julia, Haskell, Lua, R, Clojure, Fortran, and Nim, plus intentionally invalid lint fixtures clearly labelled as such.

Can I edit code samples in the browser?

Yes. Every text-previewable code format is editable and has an editor quick-start preset.

Do you ship a monorepo sample?

Wave G includes a tiny multi-language SAMPLE monorepo ZIP for unpack-then-lint pipelines.

Start with one example from each use-case group, then continue through its other test families. Choose a use case, search, or filter to find a specific profile; a card’s variant menu contains its related samples.

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Results

115 test families · 125 available files · Page 1 of 7

C Struct

C struct SAMPLE for clangd / highlighter fixtures.

File: C · C
Use case: Syntax highlighting / Code parsing

View details Download C

Clojure

Clojure Hello

Minimal Clojure hello for CIDER / clj-kondo fixtures.

File: CLJ · Clojure
Use case: Syntax highlighting / Code parsing

View details Download CLJ

C++

C++ Optional

C++17 optional SAMPLE for clangd fixtures.

File: CPP · C++ · cpp
Use case: Syntax highlighting / Code parsing

View details Download CPP

Csharp

C# Fibonacci

A small C# iterator Fibonacci utility: realistic snippet for language tooling.

File: CS · Csharp
Use case: Syntax highlighting / Code parsing

View details Download CS

Css

CSS: Component styles (variables, flexbox, keyframes)

A realistic component stylesheet using custom properties, flexbox, a fluid clamp() font size, color-mix(), a keyframe animation, and a media query, for testing CSS parsers, linters (stylelint), and highlighters.

File: CSS · Css
Use case: Syntax highlighting / Code parsing

View details Download CSS

Dart

Dart Counter

Tiny Dart class with a counter: fixture for Dart analysis servers.

File: DART · Dart
Use case: Syntax highlighting / Code parsing

View details Download DART

Elixir

Elixir GenServer Stub

Elixir GenServer stub SAMPLE for Beam tooling.

File: EX · Elixir
Use case: Syntax highlighting / Code parsing

View details Download EX

Fortran

Fortran Hello

Minimal Fortran 90 hello for gfortran / highlighter fixtures.

File: F90 · Fortran
Use case: Syntax highlighting / Code parsing

View details Download F90

Go Generics

Go generics helper for gopls / highlighter fixtures.

File: GO · Go
Use case: Syntax highlighting / Code parsing

View details Download GO

Haskell

Haskell Fold

Haskell foldl snippet for AST and highlighter tests.

File: HS · Haskell
Use case: Syntax highlighting / Code parsing

View details Download HS

HTML

HTML: Hello World

A minimal, valid HTML5 document (doctype, head, and a single heading) for testing HTML parsers, highlighters, and validators against the simplest well-formed page.