For AI agents: the complete documentation index is available at https://rslint.rs/llms.txt, the full documentation bundle is available at https://rslint.rs/llms-full.txt, and this page is available as Markdown at https://rslint.rs/rules/rstest/prefer-lowercase-title.md.
close

prefer-lowercase-title

Added in v0.9.3

Configuration

PresetConfigured Value
✅ rstestPlugin.configs.all"warn"
rslint.config.ts
import { defineConfig, rstestPlugin } from '@rslint/core';

export default defineConfig([
  rstestPlugin.configs.recommended,
  {
    rules: {
      'rstest/prefer-lowercase-title': 'error',
    },
  },
]);

Enforce lowercase test names.

Test and describe block titles should begin with a lowercase character. Uppercase initial letters are conventionally reserved for class names and named exports, not test descriptions.

Options

This rule accepts an options object with the following properties:

ignore

An array of strings specifying which functions to ignore. Valid values:

  • "describe" — ignore all describe calls
  • "test" — ignore all test calls
  • "it" — ignore all it calls

allowedPrefixes

An array of prefixes. A title that starts with any of these prefixes is ignored.

ignoreTopLevelDescribe

A boolean, default false. When true, top-level describe blocks are not checked.

ignoreTodos

A boolean, default false. When true, calls with a .todo member are ignored.

Incorrect

test('Foo', function () {});
describe('Bar', function () {});

Correct

test('foo', function () {});
describe('bar', function () {});

References