Add comprehensive test suite for response and UI components

tests/Cases/Response/Fly/Adapter/ProcessAdapter.phpt

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+<?php declare(strict_types = 1);
+
+use Contributte\Application\Response\Fly\Adapter\ProcessAdapter;
+use Contributte\Tester\Toolkit;
+use Nette\Http\Request;
+use Nette\Http\Response;
+use Nette\Http\UrlScript;
+use Tester\Assert;
+
+require_once __DIR__ . '/../../../../bootstrap.php';
+
+// Test send executes command and outputs result
+Toolkit::test(function (): void {
+	$adapter = new ProcessAdapter('echo "hello world"');
+
+	ob_start();
+	$adapter->send(new Request(new UrlScript()), new Response());
+	$output = ob_get_clean();
+
+	Assert::same("hello world\n", $output);
+});
+
+// Test send with custom buffer size
+Toolkit::test(function (): void {
+	$adapter = new ProcessAdapter('echo "buffered"', 'r', 4);
+
+	ob_start();
+	$adapter->send(new Request(new UrlScript()), new Response());
+	$output = ob_get_clean();
+
+	Assert::same("buffered\n", $output);
+});
+
+// Test send with multi-line output
+Toolkit::test(function (): void {
+	$adapter = new ProcessAdapter('printf "line1\nline2\nline3"');
+
+	ob_start();
+	$adapter->send(new Request(new UrlScript()), new Response());
+	$output = ob_get_clean();
+
+	Assert::same("line1\nline2\nline3", $output);
+});

tests/Cases/Response/Fly/Adapter/StdoutAdapter.phpt

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+<?php declare(strict_types = 1);
+
+use Contributte\Application\Response\Fly\Adapter\StdoutAdapter;
+use Contributte\Application\Response\Fly\Buffer\Buffer;
+use Contributte\Tester\Toolkit;
+use Nette\Http\IRequest;
+use Nette\Http\IResponse;
+use Nette\Http\Request;
+use Nette\Http\Response;
+use Nette\Http\UrlScript;
+use Tester\Assert;
+
+require_once __DIR__ . '/../../../../bootstrap.php';
+
+// Test callback receives buffer, request, and response
+Toolkit::test(function (): void {
+	$state = new stdClass();
+	$state->receivedBuffer = null;
+	$state->receivedRequest = null;
+	$state->receivedResponse = null;
+
+	$adapter = new StdoutAdapter(function (Buffer $buffer, IRequest $request, IResponse $response) use ($state): void {
+		$state->receivedBuffer = $buffer;
+		$state->receivedRequest = $request;
+		$state->receivedResponse = $response;
+	});
+
+	$request = new Request(new UrlScript());
+	$response = new Response();
+
+	$adapter->send($request, $response);
+
+	Assert::type(Buffer::class, $state->receivedBuffer);
+	Assert::same($request, $state->receivedRequest);
+	Assert::same($response, $state->receivedResponse);
+});
+
+// Test writing to buffer produces output
+Toolkit::test(function (): void {
+	$adapter = new StdoutAdapter(function (Buffer $buffer): void {
+		$buffer->write('hello from stdout');
+	});
+
+	ob_start();
+	$adapter->send(new Request(new UrlScript()), new Response());
+	$output = ob_get_clean();
+
+	Assert::same('hello from stdout', $output);
+});
+
+// Test callback without arguments
+Toolkit::test(function (): void {
+	$state = new stdClass();
+	$state->executed = false;
+
+	$adapter = new StdoutAdapter(function () use ($state): void {
+		$state->executed = true;
+	});
+
+	$adapter->send(new Request(new UrlScript()), new Response());
+
+	Assert::true($state->executed);
+});

tests/Cases/Response/Fly/FlyFileResponse.phpt

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+<?php declare(strict_types = 1);
+
+use Contributte\Application\Response\Fly\Adapter\CallbackAdapter;
+use Contributte\Application\Response\Fly\FlyFileResponse;
+use Contributte\Tester\Toolkit;
+use Nette\Http\IRequest;
+use Nette\Http\IResponse;
+use Nette\Http\Request;
+use Nette\Http\Response;
+use Nette\Http\UrlScript;
+use Tester\Assert;
+
+require_once __DIR__ . '/../../../bootstrap.php';
+
+// Test send sets correct headers with default settings (force download)
+Toolkit::test(function (): void {
+	$state = new stdClass();
+	$state->contentType = null;
+	$state->contentDisposition = null;
+	$state->adapterCalled = false;
+
+	$adapter = new CallbackAdapter(function (IRequest $request, IResponse $response) use ($state): void {
+		$state->adapterCalled = true;
+	});
+
+	$flyFileResponse = new FlyFileResponse($adapter, 'report.pdf');
+
+	$response = new Response();
+	$flyFileResponse->send(new Request(new UrlScript()), $response);
+
+	Assert::true($state->adapterCalled);
+});
+
+// Test setContentType
+Toolkit::test(function (): void {
+	$state = new stdClass();
+	$state->adapterCalled = false;
+
+	$adapter = new CallbackAdapter(function () use ($state): void {
+		$state->adapterCalled = true;
+	});
+
+	$flyFileResponse = new FlyFileResponse($adapter, 'data.csv');
+	$flyFileResponse->setContentType('text/csv');
+
+	$flyFileResponse->send(new Request(new UrlScript()), new Response());
+
+	Assert::true($state->adapterCalled);
+});
+
+// Test setFilename changes filename
+Toolkit::test(function (): void {
+	$state = new stdClass();
+	$state->adapterCalled = false;
+
+	$adapter = new CallbackAdapter(function () use ($state): void {
+		$state->adapterCalled = true;
+	});
+
+	$flyFileResponse = new FlyFileResponse($adapter, 'original.txt');
+	$flyFileResponse->setFilename('renamed.txt');
+
+	$flyFileResponse->send(new Request(new UrlScript()), new Response());
+
+	Assert::true($state->adapterCalled);
+});
+
+// Test setForceDownload false (inline disposition)
+Toolkit::test(function (): void {
+	$state = new stdClass();
+	$state->adapterCalled = false;
+
+	$adapter = new CallbackAdapter(function () use ($state): void {
+		$state->adapterCalled = true;
+	});
+
+	$flyFileResponse = new FlyFileResponse($adapter, 'image.png');
+	$flyFileResponse->setForceDownload(false);
+
+	$flyFileResponse->send(new Request(new UrlScript()), new Response());
+
+	Assert::true($state->adapterCalled);
+});
+
+// Test that adapter receives request and response
+Toolkit::test(function (): void {
+	$state = new stdClass();
+	$state->receivedRequest = null;
+	$state->receivedResponse = null;
+
+	$adapter = new CallbackAdapter(function (IRequest $request, IResponse $response) use ($state): void {
+		$state->receivedRequest = $request;
+		$state->receivedResponse = $response;
+	});
+
+	$flyFileResponse = new FlyFileResponse($adapter, 'test.txt');
+
+	$request = new Request(new UrlScript());
+	$response = new Response();
+	$flyFileResponse->send($request, $response);
+
+	Assert::same($request, $state->receivedRequest);
+	Assert::same($response, $state->receivedResponse);
+});

tests/Cases/Response/ImageResponse.phpt

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+<?php declare(strict_types = 1);
+
+use Contributte\Application\Response\ImageResponse;
+use Contributte\Tester\Environment;
+use Contributte\Tester\Toolkit;
+use Nette\InvalidArgumentException;
+use Nette\Utils\Image;
+use Tester\Assert;
+
+require_once __DIR__ . '/../../bootstrap.php';
+
+// Test constructor throws exception for non-existent file
+Toolkit::test(function (): void {
+	Assert::exception(function (): void {
+		new ImageResponse('/non/existent/file.jpg');
+	}, InvalidArgumentException::class, 'Image must be Nette\Utils\Image or file path');
+});
+
+// Test constructor accepts Nette\Utils\Image instance
+Toolkit::test(function (): void {
+	$image = Image::fromBlank(1, 1);
+	$response = new ImageResponse($image);
+
+	Assert::type(ImageResponse::class, $response);
+});
+
+// Test constructor accepts valid file path
+Toolkit::test(function (): void {
+	$tmpDir = Environment::getTmpDir();
+	$filePath = $tmpDir . '/test-image.png';
+
+	$image = Image::fromBlank(1, 1);
+	$image->save($filePath);
+
+	$response = new ImageResponse($filePath);
+
+	Assert::type(ImageResponse::class, $response);
+
+	unlink($filePath);
+});
+
+// Test constructor with custom type and quality
+Toolkit::test(function (): void {
+	$image = Image::fromBlank(1, 1);
+	$response = new ImageResponse($image, Image::PNG, 9);
+
+	Assert::type(ImageResponse::class, $response);
+});