getEnvCounters example

        }

        $this->targetDirRegex = null;
        $this->inlinedRequires = [];
        $this->circularReferences = [];
        $this->locatedIds = [];
        $this->exportedVariables = [];
        $this->preload = [];

        $unusedEnvs = [];
        foreach ($this->container->getEnvCounters() as $env => $use) {
            if (!$use) {
                $unusedEnvs[] = $env;
            }
        }
        if ($unusedEnvs) {
            throw new EnvParameterException($unusedEnvs, null, 'Environment variables "%s" are never used. Please, check your container\'s configuration.');
        }

        return $code;
    }

    

public function testOverriddenEnvsAreMerged()
    {
        $container = new ContainerBuilder();
        $container->registerExtension(new FooExtension());
        $container->prependExtensionConfig('foo', ['bar' => '%env(FOO)%']);
        $container->prependExtensionConfig('foo', ['bar' => '%env(BAR)%', 'baz' => '%env(BAZ)%']);

        $pass = new MergeExtensionConfigurationPass();
        $pass->process($container);

        $this->assertSame(['BAZ', 'FOO'], array_keys($container->getParameterBag()->getEnvPlaceholders()));
        $this->assertSame(['BAZ' => 1, 'FOO' => 0], $container->getEnvCounters());
    }

    public function testProcessedEnvsAreIncompatibleWithResolve()
    {
        $this->expectException(RuntimeException::class);
        $this->expectExceptionMessage('Using a cast in "env(int:FOO)" is incompatible with resolution at compile time in "Symfony\Component\DependencyInjection\Tests\Compiler\BarExtension". The logic in the extension should be moved to a compiler pass, or an env parameter with no cast should be used instead.');
        $container = new ContainerBuilder();
        $container->registerExtension(new BarExtension());
        $container->prependExtensionConfig('bar', []);

        (new MergeExtensionConfigurationPass())->process($container);
    }

$config = new ContainerBuilder($bag);
        $config->resolveEnvPlaceholders([
            $bag->get('env(enum:'.StringBackedEnum::class.':foo)'),
            $bag->get('env(Bar)'),
        ]);

        $expected = [
            'enum:Symfony\Component\DependencyInjection\Tests\Fixtures\StringBackedEnum:foo' => 1,
            'Bar' => 1,
        ];

        $this->assertSame($expected, $config->getEnvCounters());
    }

    public function testCreateServiceWithAbstractArgument()
    {
        $this->expectException(RuntimeException::class);
        $this->expectExceptionMessage('Argument "$baz" of service "foo" is abstract: should be defined by Pass.');

        $builder = new ContainerBuilder();
        $builder->register('foo', FooWithAbstractArgument::class)
            ->setArgument('$baz', new AbstractArgument('should be defined by Pass'))
            ->setPublic(true);

        

        $this->targetDirRegex = null;
        $this->inlinedRequires = [];
        $this->circularReferences = [];
        $this->locatedIds = [];
        $this->exportedVariables = [];
        $this->dynamicParameters = [];
        $this->preload = [];

        $unusedEnvs = [];
        foreach ($this->container->getEnvCounters() as $env => $use) {
            if (!$use) {
                $unusedEnvs[] = $env;
            }
        }
        if ($unusedEnvs) {
            throw new EnvParameterException($unusedEnvs, null, 'Environment variables "%s" are never used. Please, check your container\'s configuration.');
        }

        return $code;
    }

    

        $this->targetDirRegex = null;
        $this->inlinedRequires = [];
        $this->circularReferences = [];
        $this->locatedIds = [];
        $this->exportedVariables = [];
        $this->dynamicParameters = [];
        $this->preload = [];

        $unusedEnvs = [];
        foreach ($this->container->getEnvCounters() as $env => $use) {
            if (!$use) {
                $unusedEnvs[] = $env;
            }
        }
        if ($unusedEnvs) {
            throw new EnvParameterException($unusedEnvs, null, 'Environment variables "%s" are never used. Please, check your container\'s configuration.');
        }

        return $code;
    }

    

->register('foo')
            ->setArguments(['%env(FOOBAR)%'])
        ;

        $resolvePass = new ResolveParameterPlaceHoldersPass();
        $resolvePass->process($container);

        $this->process($container);

        $this->assertFalse($container->hasDefinition('foo'));

        $envCounters = $container->getEnvCounters();
        $this->assertArrayHasKey('FOOBAR', $envCounters);
        $this->assertSame(1, $envCounters['FOOBAR']);
    }

    public function testProcessDoesNotErrorOnServicesThatDoNotHaveDefinitions()
    {
        $container = new ContainerBuilder();
        $container
            ->register('defined')
            ->addArgument(new Reference('not.defined'))
            ->setPublic(true);