Test File Generator

Inspired by IntelliJ IDEA's "Generate Test" feature, this extension brings the same workflow to VS Code, language agnostic, configurable, and designed to work in any project structure including monorepos.

Features

Generate Test File

Right-click a source file in the Explorer or use the Command Palette → Generate Test File.

• Maps src/db/user.repos.ts → test/db/user.repos.test.ts
• If the test file already exists, opens it without overwriting
• Injects a configured VS Code snippet after creation

Sync Test File Rename

When a source file is renamed, the corresponding test file is renamed automatically (with confirmation prompt).

Go to Counterpart File

Inspired by IntelliJ IDEA's Ctrl+Shift+T, toggle between a source file and its test file instantly with Alt+Shift+T or via the context menu. Works in both directions, source → test and test → source.

Auto Generate Test File (Hardcore Mode)

When hardcorePatterns is configured, a test file is automatically created with a TODO comment whenever a new source file matching one of the patterns is created. Set to an empty array to disable.

Configuration

Workspace Settings

{
  "testFileGenerator.sourceRootPattern": "src",
  "testFileGenerator.testRootPattern": "test",
  "testFileGenerator.testSuffix": ".test",
  "testFileGenerator.hardcorePatterns": []
}

Folder Settings

{
  "folders": [
    ...
  ],
  "settings": {
    "testFileGenerator.sourceRootPattern": "src/main",
    "testFileGenerator.testRootPattern": "src/test",
    "testFileGenerator.testSuffix": ".test",
    "testFileGenerator.hardcorePatterns": [
      "**/*.ts" // /!\ hardcore mode enable (require restart vscode)
    ]
  }
}

Add/Overwrite Snippet

Snippets are resolved by VS Code using the standard priority order:

workspace → user → extension.

To override a built-in snippet or add one for an unsupported language, create a file in .vscode/ named tfg-{ext}.code-snippets with a snippet keyed tfg-{ext}-test.

Example for TypeScript (.vscode/tfg-ts.code-snippets):

{
  "tfg-ts-test": {
    "prefix": "tfg-ts-test",
    "scope": "typescript",
    "body": [
      "describe(\"$TM_FILENAME_BASE\", () => {", 
      /**/ "\ttest(\"$1\", () => {", 
      /**/ "\t\t$2", 
      /**/ "\t});", 
      "});"
    ]
  }
}

The snippet key and prefix must match exactly tfg-{ext}-test.

[!NOTE] Snippet Resolution: The extension automatically resolve a snippet based on the source file extension. The snippet name is built as tfg-{ext}-test, example: | filename | | ext | | key name | |----------|-|------|-|--------------| | foo.ts |→| ts |→| tfg-ts-test| | bar.py |→| py |→| tfg-py-test|

VS Code resolves the snippet using its standard priority order:

1. Workspace snippets (.vscode/*.code-snippets)
2. User snippets
3. Extension built-in snippets

If no snippet matches, the file is created empty, no error, no prompt.