# TestSuite

The `TestSuite` class represents a single suite. This class is only available in the main thread. Refer to the ["Runner API"](/api/advanced/runner#tasks) if you are working with runtime tasks.

The `TestSuite` instance always has a `type` property with the value of `suite`. You can use it to distinguish between different task types:

```ts
if (task.type === 'suite') {
  task // TestSuite
}
```

## project

This references the [`TestProject`](/api/advanced/test-project) that the test belongs to.

## module

This is a direct reference to the [`TestModule`](/api/advanced/test-module) where the test is defined.

## name

This is a suite name that was passed to the `describe` function.

```ts
import { describe } from 'vitest'

// [!code word:'the validation logic']
describe('the validation logic', () => {
  // ...
})
```

## fullName

The name of the suite including all parent suites separated with `>` symbol. This suite has a full name "the validation logic > validating cities":

```ts
import { describe, test } from 'vitest'

// [!code word:'the validation logic']
// [!code word:'validating cities']
describe('the validation logic', () => {
  describe('validating cities', () => {
    // ...
  })
})
```

## id

This is suite's unique identifier. This ID is deterministic and will be the same for the same suite across multiple runs. The ID is based on the [project](/api/advanced/test-project) name, module ID and suite order.

The ID looks like this:

```
1223128da3_0_0_0
^^^^^^^^^^ the file hash
           ^ suite index
             ^ nested suite index
               ^ test index
```

::: tip
You can generate file hash with `generateFileHash` function from `vitest/node` which is available since Vitest 3:

```ts
import { generateFileHash } from 'vitest/node'

const hash = generateFileHash(
  '/file/path.js', // relative path
  undefined, // the project name or `undefined` is not set
)
```
:::

::: danger
Don't try to parse the ID. It can have a minus at the start: `-1223128da3_0_0_0`.
:::

## location

The location in the module where the suite was defined. Locations are collected only if [`includeTaskLocation`](/config/includetasklocation) is enabled in the config. Note that this option is automatically enabled if `--reporter=html`, `--ui` or `--browser` flags are used.

The location of this suite will be equal to `{ line: 3, column: 1 }`:

```ts:line-numbers {3}
import { describe } from 'vitest'

describe('the validation works correctly', () => {
  // ...
})
```

## parent

Parent suite. If the suite was called directly inside the [module](/api/advanced/test-module), the parent will be the module itself.

## options

```ts
interface TaskOptions {
  readonly each: boolean | undefined
  readonly fails: boolean | undefined
  readonly concurrent: boolean | undefined
  readonly shuffle: boolean | undefined
  readonly retry: number | undefined
  readonly repeats: number | undefined
  readonly tags: string[] | undefined
  readonly mode: 'run' | 'only' | 'skip' | 'todo'
}
```

The options that suite was collected with.

## children

This is a [collection](/api/advanced/test-collection) of all suites and tests inside the current suite.

```ts
for (const task of suite.children) {
  if (task.type === 'test') {
    console.log('test', task.fullName)
  }
  else {
    // task is TaskSuite
    console.log('suite', task.name)
  }
}
```

::: warning
Note that `suite.children` will only iterate the first level of nesting, it won't go deeper. If you need to iterate over all tests or suites, use [`children.allTests()`](/api/advanced/test-collection#alltests) or [`children.allSuites()`](/api/advanced/test-collection#allsuites). If you need to iterate over everything, use recursive function:

```ts
function visit(collection: TestCollection) {
  for (const task of collection) {
    if (task.type === 'suite') {
      // report a suite
      visit(task.children)
    }
    else {
      // report a test
    }
  }
}
```
:::

## ok

```ts
function ok(): boolean
```

Checks if the suite has any failed tests. This will also return `false` if suite failed during collection. In that case, check the [`errors()`](#errors) for thrown errors.

## state

```ts
function state(): TestSuiteState
```

Checks the running state of the suite. Possible return values:

- **pending**: the tests in this suite did not finish running yet.
- **failed**: this suite has failed tests or they couldn't be collected. If [`errors()`](#errors) is not empty, it means the suite failed to collect tests.
- **passed**: every test inside this suite has passed.
- **skipped**: this suite was skipped during collection.

::: warning
Note that [test module](/api/advanced/test-module) also has a `state` method that returns the same values, but it can also return an additional `queued` state if the module wasn't executed yet.
:::

## errors

```ts
function errors(): TestError[]
```

Errors that happened outside of the test run during collection, like syntax errors.

```ts {4}
import { describe } from 'vitest'

describe('collection failed', () => {
  throw new Error('a custom error')
})
```

::: warning
Note that errors are serialized into simple objects: `instanceof Error` will always return `false`.
:::

## meta <Version>3.1.0</Version> {#meta}

```ts
function meta(): TaskMeta
```

Custom [metadata](/api/advanced/metadata) that was attached to the suite during its execution or collection. Since Vitest 4.1, the meta can be attached by providing a `meta` object during test collection:

```ts {7,10}
import { describe, test, TestRunner } from 'vitest'

describe('the validation works correctly', { meta: { decorated: true } }, () => {
  test('some test', ({ task }) => {
    // assign "decorated" during test run, it will be available
    // only in onTestCaseReady hook
    task.suite.meta.decorated = false

    // tests inherit suite's metadata
    task.meta.decorated === true
  })
})
```

Note that suite metadata will be inherited by tests since Vitest 4.1.

:::tip
If metadata was attached during collection (outside of the `test` function), then it will be available in [`onTestModuleCollected`](./reporters#ontestmodulecollected) hook in the custom reporter.
:::

## toTestSpecification <Version>4.1.0</Version> {#totestspecification}

```ts
function toTestSpecification(): TestSpecification
```

Returns a new [test specification](/api/advanced/test-specification) that can be used to filter or run this specific test suite.
