Removed support for swoole 4.x (#5813)

Co-authored-by: 李铭昕 <715557344@qq.com>

Author: huangdijia

tests/Cases/DatabasePostgresBuilderTest.php

@@ -35,10 +35,8 @@ class DatabasePostgresBuilderTest extends TestCase
 {
     protected function tearDown(): void
     {
-        if (SWOOLE_MAJOR_VERSION >= 5) {
-            ContainerStub::getContainer();
-            Schema::dropIfExists('test_full_text_index');
-        }
+        ContainerStub::getContainer();
+        Schema::dropIfExists('test_full_text_index');
         m::close();
     }
 
@@ -111,10 +109,6 @@ public function testWhereFullText()
 
     public function testWhereFullTextForReal()
     {
-        if (SWOOLE_MAJOR_VERSION < 5) {
-            $this->markTestSkipped('PostgreSql requires Swoole version >= 5.0.0');
-        }
-
         $container = ContainerStub::getContainer();
         $container->shouldReceive('get')->with(Db::class)->andReturn(new Db($container));
 

tests/Cases/PostgreSqlSwooleExtConnectionTest.php

@@ -38,10 +38,6 @@ class PostgreSqlSwooleExtConnectionTest extends TestCase
 
     public function setUp(): void
     {
-        if (SWOOLE_MAJOR_VERSION < 5) {
-            $this->markTestSkipped('PostgreSql requires Swoole version >= 5.0.0');
-        }
-
         $resolver = ContainerStub::getContainer()->get(ConnectionResolverInterface::class);
 
         $this->migrator = new Migrator(

tests/DBAL/ConnectionTest.php

@@ -29,10 +29,6 @@ class ConnectionTest extends TestCase
 
     public function setUp(): void
     {
-        if (SWOOLE_MAJOR_VERSION < 5) {
-            $this->markTestSkipped('PostgreSql requires Swoole version >= 5.0.0');
-        }
-
         $pgsql = new PostgreSQL();
         $connected = $pgsql->connect('host=127.0.0.1 port=5432 dbname=postgres user=postgres password=postgres');
         if (! $connected) {