Close 68 escaped mutants across metadata, SQL and table gateway

infection.json5.dist

@@ -16,7 +16,51 @@
         }
     },
     "mutators": {
-        "@default": true
+        "@default": true,
+        "DecrementInteger": {
+            "ignore": [
+                // implode() discards keys, so array_fill()'s start index cannot be observed.
+                "PhpDb\\Sql\\Argument\\Identifiers::getSpecification",
+                "PhpDb\\Sql\\Argument\\Values::getSpecification",
+                "PhpDb\\Sql\\Ddl\\Constraint\\ForeignKey::getExpressionData"
+            ]
+        },
+        "IncrementInteger": {
+            "ignore": [
+                // implode() discards keys, so array_fill()'s start index cannot be observed.
+                "PhpDb\\Sql\\Argument\\Identifiers::getSpecification",
+                "PhpDb\\Sql\\Argument\\Values::getSpecification",
+                "PhpDb\\Sql\\Ddl\\Constraint\\ForeignKey::getExpressionData"
+            ]
+        },
+        "MethodCallRemoval": {
+            "ignore": [
+                // Delegates to getColumnNames(), which loads the same data itself.
+                "PhpDb\\Metadata\\Source\\AbstractSource::getColumns"
+            ]
+        },
+        "ReturnRemoval": {
+            "ignore": [
+                // The guard short-circuits prepareDataHierarchy(), which is itself
+                // idempotent, so falling through to it has no observable effect.
+                "PhpDb\\Metadata\\Source\\AbstractSource::loadColumnData",
+                "PhpDb\\Metadata\\Source\\AbstractSource::loadConstraintData",
+                "PhpDb\\Metadata\\Source\\AbstractSource::loadConstraintDataKeys",
+                "PhpDb\\Metadata\\Source\\AbstractSource::loadConstraintReferences",
+                "PhpDb\\Metadata\\Source\\AbstractSource::loadTableNameData",
+                "PhpDb\\Metadata\\Source\\AbstractSource::loadTriggerData",
+                // A RowGatewayInterface is neither null nor a string, so the next guard
+                // returns for exactly the inputs this one does.
+                "PhpDb\\TableGateway\\Feature\\RowGatewayFeature::postInitialize"
+            ]
+        },
+        "TrueValue": {
+            "ignore": [
+                // The method body is empty; the flag is accepted for interface
+                // compatibility and never read.
+                "PhpDb\\TableGateway\\Feature\\EventFeature\\TableGatewayEvent::stopPropagation"
+            ]
+        }
     },
     "staticAnalysisTool": "mago"
 }

test/unit/Adapter/Container/AdapterInterfaceDelegatorTest.php

@@ -291,6 +291,21 @@ public function testSetStateWithCustomAdapterName(): void
         $delegator = AdapterInterfaceDelegator::__set_state(['adapterName' => 'custom']);
 
         self::assertInstanceOf(AdapterInterfaceDelegator::class, $delegator);
+
+        $container = $this->createMock(ContainerInterface::class);
+        $container->expects(self::once())
+            ->method('has')
+            ->with('custom')
+            ->willReturn(false);
+
+        self::expectException(ServiceNotFoundException::class);
+        self::expectExceptionMessage(sprintf(ContainerException::MISSING_SERVICE, 'custom'));
+
+        $delegator(
+            $container,
+            ConcreteAdapterAwareObject::class,
+            static fn(): ConcreteAdapterAwareObject => new ConcreteAdapterAwareObject(),
+        );
     }
 
     public function testSetStateWithDefaultAdapterName(): void

test/unit/ConfigProviderTest.php

@@ -10,6 +10,7 @@
 use PhpDb\Sql;
 use PHPUnit\Framework\Attributes\CoversClass;
 use PHPUnit\Framework\Attributes\Group;
+use PHPUnit\Framework\Attributes\Test;
 use PHPUnit\Framework\TestCase;
 
 #[CoversClass(ConfigProvider::class)]
@@ -40,6 +41,12 @@ class ConfigProviderTest extends TestCase
         ],
     ];
 
+    #[Test]
+    public function getDependenciesIsCallableAsPartOfThePublicApi(): void
+    {
+        static::assertEquals($this->config['dependencies'], (new ConfigProvider())->getDependencies());
+    }
+
     public function testInvocationProvidesDependencyConfiguration(): void
     {
         self::assertEquals($this->config, (new ConfigProvider())());

test/unit/Exception/ContainerExceptionTest.php

@@ -68,6 +68,12 @@ public function forNonAdapterAwareDelegateRendersItsTemplate(): void
         );
     }
 
+    #[Test]
+    public function forServiceCreatesExceptionWithoutACode(): void
+    {
+        self::assertSame(0, ContainerException::forService('Svc', 'Factory', 'reason')->getCode());
+    }
+
     #[Test]
     public function forServiceIsAPsrContainerException(): void
     {

test/unit/Metadata/Object/ColumnObjectTest.php

@@ -207,6 +207,24 @@ public function setErratasIteratesCorrectly(): void
         static::assertSame('value2', $column->getErrata('key2'));
     }
 
+    /**
+     * Erratas accumulate: a second call adds to what is already there rather than
+     * replacing it.
+     */
+    #[Test]
+    public function setErratasMergesIntoTheExistingErrata(): void
+    {
+        $column = new ColumnObject('column', 'table', 'schema');
+
+        $column->setErratas(['auto_increment' => true]);
+        $column->setErratas(['comment' => 'Primary key']);
+
+        static::assertSame(
+            ['auto_increment' => true, 'comment' => 'Primary key'],
+            $column->getErratas(),
+        );
+    }
+
     #[Test]
     public function setErratasWithArrayAndGetErratas(): void
     {