PHPUnit Testing - POST Method is not supported for this route

Impossible to say without sharing the relevant test example, and the application code - i.e. route definition and Controller action.

On the face of it, it seems that you are using an incorrect request verb for the endpoint.

@jmacdiarmid Laravel handles CSRF automatically in tests so you don’t need to explicitly pass a token.

Can you share an example test case, and the error you’re getting?

For convenience, the CSRF middleware is automatically disabled when running tests.

POST Method is not supported for this route usually meant there is no POST method in the route for that particular url.. double check the route especially typo error

Here's my code:

TestCase:

namespace Tests;

use Faker\Generator;
use Illuminate\Foundation\Testing\DatabaseMigrations;
use Illuminate\Foundation\Testing\DatabaseTransactions;
use Illuminate\Foundation\Testing\TestCase as BaseTestCase;
use Faker\Factory as Faker;

/**
 * Class TestCase
 * @package Tests
 * @runTestsInSeparateProcesses
 * @preserveGlobalState disabled
 */
abstract class TestCase extends BaseTestCase
{
    use CreatesApplication, DatabaseMigrations, DatabaseTransactions;

    protected Generator $faker;

    /**
     * Set up the test
     */
    public function setUp(): void
    {
        parent::setUp();
        $this->faker = Faker::create();
    }

    /**
     * Reset the migrations
     */
    public function tearDown(): void
    {
        $this->artisan('migrate:reset');
        parent::tearDown();
    }


}

ContractCreationTest.php

namespace Tests\Feature;

use App\Models\Contract;
use Illuminate\Foundation\Testing\RefreshDatabase;
use Illuminate\Foundation\Testing\WithFaker;
use Tests\TestCase;

class ContractCreationTest extends TestCase
{

    /** @test */
    public function a_contract_can_be_added_to_the_database(): void
    {
        $this->withoutExceptionHandling();
        
        
        // Tried this first 
//        $response = $this->post('admin/contracts/create', [
//            'company_name'   => 'ABC Candle Company, Inc.',
//        ]);
        
        $response = $this->call('POST','admin/contracts/create', [
           'company_name'   => 'ABC Candle Company, Inc.',

        ]);

        $response->assertOk();
        self::assertCount(1, Contract::all());

    }

}