diff --git a/src/Migration/Manager.php b/src/Migration/Manager.php
index 24f01201..cb1fea20 100644
--- a/src/Migration/Manager.php
+++ b/src/Migration/Manager.php
@@ -14,7 +14,6 @@
 use Phinx\Config\ConfigInterface;
 use Phinx\Config\NamespaceAwareInterface;
 use Phinx\Migration\AbstractMigration;
-use Phinx\Migration\Manager\Environment;
 use Phinx\Migration\MigrationInterface;
 use Phinx\Seed\AbstractSeed;
 use Phinx\Seed\SeedInterface;
@@ -46,7 +45,7 @@ class Manager
     protected OutputInterface $output;
 
     /**
-     * @var \Phinx\Migration\Manager\Environment[]
+     * @var \Migrations\Migration\Environment[]
      */
     protected array $environments = [];
 
@@ -718,7 +717,7 @@ public function seed(string $environment, ?string $seed = null): void
     /**
      * Sets the environments.
      *
-     * @param \Phinx\Migration\Manager\Environment[] $environments Environments
+     * @param \Migrations\Migration\Environment[] $environments Environments
      * @return $this
      */
     public function setEnvironments(array $environments = [])
@@ -733,7 +732,7 @@ public function setEnvironments(array $environments = [])
      *
      * @param string $name Environment Name
      * @throws \InvalidArgumentException
-     * @return \Phinx\Migration\Manager\Environment
+     * @return \Migrations\Migration\Environment
      */
     public function getEnvironment(string $name): Environment
     {
diff --git a/tests/TestCase/Migration/ManagerTest.php b/tests/TestCase/Migration/ManagerTest.php
index 6859787f..f1399078 100644
--- a/tests/TestCase/Migration/ManagerTest.php
+++ b/tests/TestCase/Migration/ManagerTest.php
@@ -6,10 +6,11 @@
 use Cake\Datasource\ConnectionManager;
 use DateTime;
 use InvalidArgumentException;
+use Migrations\Db\Adapter\AdapterInterface;
+use Migrations\Migration\Environment;
 use Migrations\Migration\Manager;
 use Phinx\Config\Config;
 use Phinx\Console\Command\AbstractCommand;
-use Phinx\Db\Adapter\AdapterInterface;
 use PHPUnit\Framework\TestCase;
 use RuntimeException;
 use Symfony\Component\Console\Input\ArrayInput;
@@ -121,7 +122,7 @@ protected function getConfigWithPlugin($paths = [])
      * Prepares an environment for cross DBMS functional tests.
      *
      * @param array $paths The paths config to override.
-     * @return \Phinx\Db\Adapter\AdapterInterface
+     * @return \Migrations\Db\Adapter\AdapterInterface
      */
     protected function prepareEnvironment(array $paths = []): AdapterInterface
     {
@@ -134,12 +135,6 @@ protected function prepareEnvironment(array $paths = []): AdapterInterface
         // Emulate the results of Util::parseDsn()
         $connectionConfig = ConnectionManager::getConfig('test');
         $adapter = $connectionConfig['scheme'] ?? null;
-        if ($adapter === 'postgres') {
-            $adapter = 'pgsql';
-        }
-        if ($adapter === 'sqlserver') {
-            $adapter = 'sqlsrv';
-        }
         $adapterConfig = [
             'adapter' => $adapter,
             'user' => $connectionConfig['username'],
@@ -154,7 +149,7 @@ protected function prepareEnvironment(array $paths = []): AdapterInterface
         $adapter = $this->manager->getEnvironment('production')->getAdapter();
 
         // ensure the database is empty
-        if ($adapterConfig['adapter'] === 'pgsql') {
+        if ($adapterConfig['adapter'] === 'postgres') {
             $adapter->dropSchema('public');
             $adapter->createSchema('public');
         } elseif ($adapterConfig['name'] !== ':memory:') {
@@ -185,7 +180,7 @@ public function testEnvironmentInheritsDataDomainOptions()
     public function testPrintStatusMethod()
     {
         // stub environment
-        $envStub = $this->getMockBuilder('\Phinx\Migration\Manager\Environment')
+        $envStub = $this->getMockBuilder(Environment::class)
             ->setConstructorArgs(['mockenv', []])
             ->getMock();
         $envStub->expects($this->once())
@@ -232,7 +227,7 @@ public function testPrintStatusMethod()
     public function testPrintStatusMethodJsonFormat()
     {
         // stub environment
-        $envStub = $this->getMockBuilder('\Phinx\Migration\Manager\Environment')
+        $envStub = $this->getMockBuilder(Environment::class)
             ->setConstructorArgs(['mockenv', []])
             ->getMock();
         $envStub->expects($this->once())
@@ -278,7 +273,7 @@ public function testPrintStatusMethodJsonFormat()
     public function testPrintStatusMethodWithBreakpointSet()
     {
         // stub environment
-        $envStub = $this->getMockBuilder('\Phinx\Migration\Manager\Environment')
+        $envStub = $this->getMockBuilder(Environment::class)
             ->setConstructorArgs(['mockenv', []])
             ->getMock();
         $envStub->expects($this->once())
@@ -325,7 +320,7 @@ public function testPrintStatusMethodWithBreakpointSet()
     public function testPrintStatusMethodWithNoMigrations()
     {
         // stub environment
-        $envStub = $this->getMockBuilder('\Phinx\Migration\Manager\Environment')
+        $envStub = $this->getMockBuilder(Environment::class)
             ->setConstructorArgs(['mockenv', []])
             ->getMock();
 
@@ -344,7 +339,7 @@ public function testPrintStatusMethodWithNoMigrations()
     public function testPrintStatusMethodWithMissingMigrations()
     {
         // stub environment
-        $envStub = $this->getMockBuilder('\Phinx\Migration\Manager\Environment')
+        $envStub = $this->getMockBuilder(Environment::class)
             ->setConstructorArgs(['mockenv', []])
             ->getMock();
         $envStub->expects($this->once())
@@ -403,7 +398,7 @@ public function testPrintStatusMethodWithMissingMigrations()
     public function testPrintStatusMethodWithMissingLastMigration()
     {
         // stub environment
-        $envStub = $this->getMockBuilder('\Phinx\Migration\Manager\Environment')
+        $envStub = $this->getMockBuilder(Environment::class)
             ->setConstructorArgs(['mockenv', []])
             ->getMock();
         $envStub->expects($this->once())
@@ -464,7 +459,7 @@ public function testPrintStatusMethodWithMissingLastMigration()
     public function testPrintStatusMethodWithMissingMigrationsAndBreakpointSet()
     {
         // stub environment
-        $envStub = $this->getMockBuilder('\Phinx\Migration\Manager\Environment')
+        $envStub = $this->getMockBuilder(Environment::class)
             ->setConstructorArgs(['mockenv', []])
             ->getMock();
         $envStub->expects($this->once())
@@ -523,7 +518,7 @@ public function testPrintStatusMethodWithMissingMigrationsAndBreakpointSet()
     public function testPrintStatusMethodWithDownMigrations()
     {
         // stub environment
-        $envStub = $this->getMockBuilder('\Phinx\Migration\Manager\Environment')
+        $envStub = $this->getMockBuilder(Environment::class)
             ->setConstructorArgs(['mockenv', []])
             ->getMock();
         $envStub->expects($this->once())
@@ -558,7 +553,7 @@ public function testPrintStatusMethodWithDownMigrations()
     public function testPrintStatusMethodWithMissingAndDownMigrations()
     {
         // stub environment
-        $envStub = $this->getMockBuilder('\Phinx\Migration\Manager\Environment')
+        $envStub = $this->getMockBuilder(Environment::class)
             ->setConstructorArgs(['mockenv', []])
             ->getMock();
         $envStub->expects($this->once())
@@ -656,7 +651,7 @@ public function testGetMigrationsWithInvalidMigrationClassName()
     public function testGettingAValidEnvironment()
     {
         $this->assertInstanceOf(
-            'Phinx\Migration\Manager\Environment',
+            Environment::class,
             $this->manager->getEnvironment('production')
         );
     }
@@ -674,7 +669,7 @@ public function testGettingAValidEnvironment()
     public function testMigrationsByDate(array $availableMigrations, $dateString, $expectedMigration, $message)
     {
         // stub environment
-        $envStub = $this->getMockBuilder('\Phinx\Migration\Manager\Environment')
+        $envStub = $this->getMockBuilder(Environment::class)
             ->setConstructorArgs(['mockenv', []])
             ->getMock();
         if (is_null($expectedMigration)) {
@@ -705,7 +700,7 @@ public function testMigrationsByDate(array $availableMigrations, $dateString, $e
     public function testRollbackToVersion($availableRollbacks, $version, $expectedOutput)
     {
         // stub environment
-        $envStub = $this->getMockBuilder('\Phinx\Migration\Manager\Environment')
+        $envStub = $this->getMockBuilder(Environment::class)
             ->setConstructorArgs(['mockenv', []])
             ->getMock();
         $envStub->expects($this->any())
@@ -738,7 +733,7 @@ public function testRollbackToVersion($availableRollbacks, $version, $expectedOu
     public function testRollbackToDate($availableRollbacks, $version, $expectedOutput)
     {
         // stub environment
-        $envStub = $this->getMockBuilder('\Phinx\Migration\Manager\Environment')
+        $envStub = $this->getMockBuilder(Environment::class)
             ->setConstructorArgs(['mockenv', []])
             ->getMock();
         $envStub->expects($this->any())
@@ -771,7 +766,7 @@ public function testRollbackToDate($availableRollbacks, $version, $expectedOutpu
     public function testRollbackToVersionByExecutionTime($availableRollbacks, $version, $expectedOutput)
     {
         // stub environment
-        $envStub = $this->getMockBuilder('\Phinx\Migration\Manager\Environment')
+        $envStub = $this->getMockBuilder(Environment::class)
             ->setConstructorArgs(['mockenv', []])
             ->getMock();
         $envStub->expects($this->any())
@@ -814,7 +809,7 @@ public function testRollbackToVersionByExecutionTime($availableRollbacks, $versi
     public function testRollbackToVersionByName($availableRollbacks, $version, $expectedOutput)
     {
         // stub environment
-        $envStub = $this->getMockBuilder('\Phinx\Migration\Manager\Environment')
+        $envStub = $this->getMockBuilder(Environment::class)
             ->setConstructorArgs(['mockenv', []])
             ->getMock();
         $envStub->expects($this->any())
@@ -857,7 +852,7 @@ public function testRollbackToVersionByName($availableRollbacks, $version, $expe
     public function testRollbackToDateByExecutionTime($availableRollbacks, $date, $expectedOutput)
     {
         // stub environment
-        $envStub = $this->getMockBuilder('\Phinx\Migration\Manager\Environment')
+        $envStub = $this->getMockBuilder(Environment::class)
             ->setConstructorArgs(['mockenv', []])
             ->getMock();
         $envStub->expects($this->any())
@@ -894,7 +889,7 @@ public function testRollbackToDateByExecutionTime($availableRollbacks, $date, $e
     public function testRollbackToVersionWithSingleMigrationDoesNotFail()
     {
         // stub environment
-        $envStub = $this->getMockBuilder('\Phinx\Migration\Manager\Environment')
+        $envStub = $this->getMockBuilder(Environment::class)
             ->setConstructorArgs(['mockenv', []])
             ->getMock();
         $envStub->expects($this->any())
@@ -919,7 +914,7 @@ public function testRollbackToVersionWithSingleMigrationDoesNotFail()
     public function testRollbackToVersionWithTwoMigrations()
     {
         // stub environment
-        $envStub = $this->getMockBuilder('\Phinx\Migration\Manager\Environment')
+        $envStub = $this->getMockBuilder(Environment::class)
             ->setConstructorArgs(['mockenv', []])
             ->getMock();
         $envStub->expects($this->any())
@@ -958,7 +953,7 @@ public function testRollbackToVersionWithTwoMigrations()
     public function testRollbackLast($availableRolbacks, $versionOrder, $expectedOutput)
     {
         // stub environment
-        $envStub = $this->getMockBuilder('\Phinx\Migration\Manager\Environment')
+        $envStub = $this->getMockBuilder(Environment::class)
             ->setConstructorArgs(['mockenv', []])
             ->getMock();
         $envStub->expects($this->any())
@@ -2253,7 +2248,7 @@ public static function rollbackLastDataProvider()
     public function testExecuteSeedWorksAsExpected()
     {
         // stub environment
-        $envStub = $this->getMockBuilder('\Phinx\Migration\Manager\Environment')
+        $envStub = $this->getMockBuilder(Environment::class)
             ->setConstructorArgs(['mockenv', []])
             ->getMock();
         $this->manager->setEnvironments(['mockenv' => $envStub]);
@@ -2268,7 +2263,7 @@ public function testExecuteSeedWorksAsExpected()
     public function testExecuteASingleSeedWorksAsExpected()
     {
         // stub environment
-        $envStub = $this->getMockBuilder('\Phinx\Migration\Manager\Environment')
+        $envStub = $this->getMockBuilder(Environment::class)
             ->setConstructorArgs(['mockenv', []])
             ->getMock();
         $this->manager->setEnvironments(['mockenv' => $envStub]);
@@ -2281,7 +2276,7 @@ public function testExecuteASingleSeedWorksAsExpected()
     public function testExecuteANonExistentSeedWorksAsExpected()
     {
         // stub environment
-        $envStub = $this->getMockBuilder('\Phinx\Migration\Manager\Environment')
+        $envStub = $this->getMockBuilder(Environment::class)
             ->setConstructorArgs(['mockenv', []])
             ->getMock();
         $this->manager->setEnvironments(['mockenv' => $envStub]);
@@ -2303,7 +2298,7 @@ public function testOrderSeeds()
     public function testSeedWillNotBeExecuted()
     {
         // stub environment
-        $envStub = $this->getMockBuilder('\Phinx\Migration\Manager\Environment')
+        $envStub = $this->getMockBuilder(Environment::class)
             ->setConstructorArgs(['mockenv', []])
             ->getMock();
         $this->manager->setEnvironments(['mockenv' => $envStub]);
@@ -2775,7 +2770,7 @@ public function testMigrationWithDropColumnAndForeignKeyAndIndex()
     public function testInvalidVersionBreakpoint()
     {
         // stub environment
-        $envStub = $this->getMockBuilder('\Phinx\Migration\Manager\Environment')
+        $envStub = $this->getMockBuilder(Environment::class)
             ->setConstructorArgs(['mockenv', []])
             ->getMock();
         $envStub->expects($this->once())