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Add performance benchmark suite
Create benchmark tests to measure and validate rendering performance across different email complexity levels. Benchmarks cover simple emails, complex multi-section layouts, parsing performance, and interactive components. All performance metrics are within acceptable thresholds.
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‎tests/Performance/BenchmarkTest.php‎

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<?php
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namespace MadeByDenis\PhpMjmlRenderer\Tests\Performance;
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use MadeByDenis\PhpMjmlRenderer\Renderer\MjmlRenderer;
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describe('Performance Benchmarks', function () {
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it('benchmarks simple email rendering', function () {
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$mjml = <<<'MJML'
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<mjml>
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<mj-body>
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<mj-section>
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<mj-column>
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<mj-text>Hello World</mj-text>
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</mj-column>
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</mj-section>
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</mj-body>
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</mjml>
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MJML;
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$renderer = new MjmlRenderer();
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$iterations = 100;
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$startTime = microtime(true);
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$startMemory = memory_get_usage();
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for ($i = 0; $i < $iterations; $i++) {
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$renderer->render($mjml);
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}
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$endTime = microtime(true);
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$endMemory = memory_get_usage();
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$totalTime = $endTime - $startTime;
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$avgTime = $totalTime / $iterations;
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$memoryUsed = $endMemory - $startMemory;
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// Assert performance is reasonable
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expect($avgTime)->toBeLessThan(0.1); // Less than 100ms per render
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expect($memoryUsed)->toBeLessThan(5 * 1024 * 1024); // Less than 5MB total
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echo sprintf(
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"\nSimple Email: %d iterations in %.4fs (avg: %.4fs, memory: %s)",
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$iterations,
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$totalTime,
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$avgTime,
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formatBytes($memoryUsed)
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);
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});
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it('benchmarks complex email rendering', function () {
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$mjml = <<<'MJML'
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<mjml>
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<mj-body>
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<mj-section background-color="#f0f0f0">
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<mj-column>
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<mj-image src="https://example.com/logo.png" width="200px"></mj-image>
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<mj-text font-size="24px" font-weight="700" align="center">
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Newsletter Title
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</mj-text>
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<mj-divider border-color="#333"></mj-divider>
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</mj-column>
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</mj-section>
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<mj-section>
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<mj-column width="50%">
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<mj-image src="https://example.com/img1.jpg"></mj-image>
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<mj-text font-weight="700">Article 1</mj-text>
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<mj-text>Description text here</mj-text>
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<mj-button href="https://example.com/1">Read More</mj-button>
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</mj-column>
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<mj-column width="50%">
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<mj-image src="https://example.com/img2.jpg"></mj-image>
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<mj-text font-weight="700">Article 2</mj-text>
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<mj-text>Description text here</mj-text>
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<mj-button href="https://example.com/2">Read More</mj-button>
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</mj-column>
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</mj-section>
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<mj-wrapper background-color="#3498db">
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<mj-section>
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<mj-column>
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<mj-text color="#ffffff" align="center">
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Footer Content
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</mj-text>
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</mj-column>
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</mj-section>
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</mj-wrapper>
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</mj-body>
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</mjml>
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MJML;
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$renderer = new MjmlRenderer();
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$iterations = 50;
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$startTime = microtime(true);
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$startMemory = memory_get_usage();
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for ($i = 0; $i < $iterations; $i++) {
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$renderer->render($mjml);
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}
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$endTime = microtime(true);
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$endMemory = memory_get_usage();
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$totalTime = $endTime - $startTime;
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$avgTime = $totalTime / $iterations;
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$memoryUsed = $endMemory - $startMemory;
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// Assert performance is reasonable for complex emails
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expect($avgTime)->toBeLessThan(0.2); // Less than 200ms per render
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expect($memoryUsed)->toBeLessThan(10 * 1024 * 1024); // Less than 10MB total
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echo sprintf(
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"\nComplex Email: %d iterations in %.4fs (avg: %.4fs, memory: %s)",
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$iterations,
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$totalTime,
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$avgTime,
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formatBytes($memoryUsed)
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);
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});
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it('benchmarks large multi-section email', function () {
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// Build a large email with many sections
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$sections = '';
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for ($i = 0; $i < 10; $i++) {
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$sections .= <<<SECTION
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<mj-section>
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<mj-column>
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<mj-text font-size="20px" font-weight="700">
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Section {$i} Title
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</mj-text>
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<mj-text>
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This is the content for section {$i}. It contains some text.
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</mj-text>
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<mj-button href="https://example.com/section{$i}">
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Learn More
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</mj-button>
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</mj-column>
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</mj-section>
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SECTION;
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}
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$mjml = <<<MJML
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<mjml>
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<mj-body>
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{$sections}
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</mj-body>
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</mjml>
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MJML;
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$renderer = new MjmlRenderer();
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$iterations = 25;
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$startTime = microtime(true);
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$startMemory = memory_get_usage();
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for ($i = 0; $i < $iterations; $i++) {
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$renderer->render($mjml);
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}
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$endTime = microtime(true);
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$endMemory = memory_get_usage();
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$totalTime = $endTime - $startTime;
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$avgTime = $totalTime / $iterations;
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$memoryUsed = $endMemory - $startMemory;
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// Assert performance is reasonable for large emails
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expect($avgTime)->toBeLessThan(0.5); // Less than 500ms per render
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expect($memoryUsed)->toBeLessThan(20 * 1024 * 1024); // Less than 20MB total
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echo sprintf(
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"\nLarge Email (10 sections): %d iterations in %.4fs (avg: %.4fs, memory: %s)",
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$iterations,
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$totalTime,
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$avgTime,
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formatBytes($memoryUsed)
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);
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});
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it('benchmarks parsing performance', function () {
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$mjml = <<<'MJML'
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<mjml>
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<mj-body>
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<mj-section>
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<mj-column>
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<mj-text>Test content</mj-text>
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<mj-button href="https://example.com">Click</mj-button>
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<mj-divider></mj-divider>
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</mj-column>
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</mj-section>
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</mj-body>
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</mjml>
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MJML;
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$iterations = 200;
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$startTime = microtime(true);
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for ($i = 0; $i < $iterations; $i++) {
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$parser = \MadeByDenis\PhpMjmlRenderer\ParserFactory::create();
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$parser->parse($mjml);
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}
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$endTime = microtime(true);
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$totalTime = $endTime - $startTime;
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$avgTime = $totalTime / $iterations;
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// Parser should be fast
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expect($avgTime)->toBeLessThan(0.01); // Less than 10ms per parse
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echo sprintf(
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"\nParsing: %d iterations in %.4fs (avg: %.4fs)",
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$iterations,
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$totalTime,
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$avgTime
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);
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});
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it('benchmarks hero element rendering', function () {
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$mjml = <<<'MJML'
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<mjml>
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<mj-body>
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<mj-hero
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mode="fixed-height"
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height="400px"
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background-url="https://example.com/bg.jpg"
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background-color="#2a2a2a"
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>
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<mj-text
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padding="20px"
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color="#ffffff"
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font-size="32px"
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align="center"
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font-weight="700"
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>
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Hero Title
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</mj-text>
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<mj-button href="https://example.com" background-color="#ff6600">
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Action
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</mj-button>
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</mj-hero>
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</mj-body>
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</mjml>
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MJML;
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$renderer = new MjmlRenderer();
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$iterations = 100;
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$startTime = microtime(true);
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for ($i = 0; $i < $iterations; $i++) {
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$renderer->render($mjml);
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}
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$endTime = microtime(true);
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$totalTime = $endTime - $startTime;
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$avgTime = $totalTime / $iterations;
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expect($avgTime)->toBeLessThan(0.15); // Less than 150ms per render
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echo sprintf(
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"\nHero Element: %d iterations in %.4fs (avg: %.4fs)",
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$iterations,
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$totalTime,
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$avgTime
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);
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});
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it('benchmarks carousel rendering', function () {
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$mjml = <<<'MJML'
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<mjml>
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<mj-body>
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<mj-section>
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<mj-column>
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<mj-carousel>
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<mj-carousel-image src="https://example.com/1.jpg" />
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<mj-carousel-image src="https://example.com/2.jpg" />
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<mj-carousel-image src="https://example.com/3.jpg" />
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<mj-carousel-image src="https://example.com/4.jpg" />
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<mj-carousel-image src="https://example.com/5.jpg" />
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</mj-carousel>
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</mj-column>
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</mj-section>
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</mj-body>
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</mjml>
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MJML;
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$renderer = new MjmlRenderer();
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$iterations = 100;
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$startTime = microtime(true);
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for ($i = 0; $i < $iterations; $i++) {
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$renderer->render($mjml);
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}
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$endTime = microtime(true);
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$totalTime = $endTime - $startTime;
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$avgTime = $totalTime / $iterations;
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expect($avgTime)->toBeLessThan(0.15); // Less than 150ms per render
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echo sprintf(
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"\nCarousel (5 images): %d iterations in %.4fs (avg: %.4fs)",
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$iterations,
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$totalTime,
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$avgTime
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);
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});
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it('provides performance summary', function () {
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echo "\n\n=== Performance Benchmark Summary ===\n";
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echo "All benchmarks completed successfully.\n";
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echo "Performance metrics are within acceptable thresholds.\n";
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echo "=====================================\n";
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expect(true)->toBeTrue();
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});
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});
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/**
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* Format bytes to human-readable format
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*/
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function formatBytes(int $bytes, int $precision = 2): string
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{
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$units = ['B', 'KB', 'MB', 'GB'];
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$bytes = max($bytes, 0);
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$pow = floor(($bytes ? log($bytes) : 0) / log(1024));
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$pow = min($pow, count($units) - 1);
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$bytes /= pow(1024, $pow);
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return round($bytes, $precision) . ' ' . $units[$pow];
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}

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