---
title: Test command
description: Run flutter test or dart test for every package that has a test directory.
---
> ## Documentation Index
> Fetch the complete documentation index at: https://melos.invertase.dev/llms.txt
> Use this file to discover all available pages before exploring further.

<Info>Supports all [Melos filtering](/filters) flags.</Info>

This command runs the tests of all the local packages in your workspace that
have a `test/` directory, in a single run. Melos uses `flutter test` for
packages that depend on the Flutter SDK and `dart test` for all other packages.

```bash
melos test
```

Melos skips packages without a `test/` directory. The command fails if any
package's tests fail, and it lists the failing packages in the run summary.

`dart test` and `flutter test` exit with the exit code `79` when no tests ran.
Melos treats this exit code as a success, so that packages without any tests to
run do not fail the command.

For more information, see [Dart testing](https://dart.dev/tools/testing).

You can configure the defaults for these options in the
[`command/test`](/configuration/overview#commandtest) section of your root
`pubspec.yaml` file.

## Concurrency (-c)

Defines how many packages can execute the command at the same time. Defaults to
`1`.

When the value is higher than `1`, Melos also passes `--concurrency` to
`dart test` and `flutter test`.

Set concurrency to 5:

```bash
# Set concurrency to 5

melos test -c 5
```

## --no-pub

Skips the implicit `pub get` that `flutter test` runs before testing a package,
by passing `--no-pub` to it. This has no effect on Dart-only packages, since
`dart test` does not support the flag.

Skip the implicit `pub get` before Flutter tests:

```bash
melos test --no-pub
```

## Filtering packages

Since the command supports all Melos filtering flags, you can run the tests of
a subset of your packages:

```bash
# Only run the tests of the packages that have changed since the main branch

melos test --diff=origin/main

# Only run the tests of the Flutter packages

melos test --flutter
```