docs(valid-title-rule): elaborate valid-title rule properties docs

docs/rules/valid-title.md

@@ -8,7 +8,7 @@
 
 # Rule Details
 
-This rule aims to enforce valid titles for tests.
+This rule aims to enforce valid titles for `describe`, `it` and `test` titles.
 
 ## Options
 
@@ -19,11 +19,11 @@ This rule has an object option:
  "vitest/valid-title": [
  "error",
  { 
- "ignoreTypeOfDescribeName": false,
- "allowArguments": false,
- "disallowedWords": ["skip", "only"],
- "mustNotMatch": ["^\\s+$", "^\\s*\\d+\\s*$"],
- "mustMatch": ["^\\s*\\w+\\s*$"]
+ "ignoreTypeOfDescribeName": false,
+  "allowArguments": false,
+ "disallowedWords": ["skip", "only"],
+ "mustNotMatch": ["^\\s+$", "^\\s*\\d+\\s*$"],
+ "mustMatch": ["^\\s*\\w+\\s*$"]
  }
  ]
 }
@@ -122,6 +122,14 @@ describe('foo', () => {
 
 An array of regex strings that are required in the test title.
 
+If you specify an array of regex strings, the check is performed on `describe`, `test` and `it` titles.
+
+For more granular control, you can specify an object with the following properties :
+
+- `describe`: an array of regex strings that are required in the `describe` title.
+- `test`: an array of regex strings that are required in the `test` title.
+- `it`: an array of regex strings that are required in the `it` title.
+
 Examples of **incorrect** code for this rule with the `{ "mustMatch": ["^\\s*\\w+\\s*$"] }` option:
 
 ```js
@@ -142,3 +150,27 @@ describe('foo', () => {
  })
 })
 ```
+
+Examples of **incorrect** code for this rule with the `{ "mustMatch": { "it": ["^should .+\.$"] } }` option:
+
+```js
+// The describe title is checked with the default regex, so it's valid 
+describe('foo', () => {
+ // This check fails because the title does not match the regex 
+ it('Should be a number', () => {
+ expect(1).toBeNumber()
+ })
+})
+```
+
+Examples of **correct** code for this rule with the `{ "mustMatch": { "describe": ["^\\s*\\w+\\s*$"] } }` option:
+
+```js
+// The describe title is checked with the default regex, so it's valid
+describe('foo', () => {
+ // This check succeeds because the title matches the regex 
+ it('should be a number.', () => {
+ expect(1).toBeNumber()
+ })
+})
+```