Add Playwright UI tests for homework 6

src/test/java/ru/kovbasa/playwright/PlaywrightExtension.java

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+package ru.kovbasa.playwright;
+
+import com.google.inject.Injector;
+import com.microsoft.playwright.Browser;
+import com.microsoft.playwright.BrowserContext;
+import com.microsoft.playwright.BrowserType;
+import com.microsoft.playwright.Page;
+import com.microsoft.playwright.Playwright;
+import com.microsoft.playwright.Tracing;
+import java.nio.file.Files;
+import java.nio.file.Path;
+import java.util.Locale;
+import org.junit.jupiter.api.extension.AfterEachCallback;
+import org.junit.jupiter.api.extension.BeforeEachCallback;
+import org.junit.jupiter.api.extension.ExtensionContext;
+import ru.kovbasa.config.InjectorProvider;
+
+public class PlaywrightExtension implements BeforeEachCallback, AfterEachCallback {
+
+    private static final String TRACE_DIR = "traces";
+
+    @Override
+    public void beforeEach(ExtensionContext context) throws Exception {
+        Injector injector = InjectorProvider.getInjector();
+        TestConfig config = injector.getInstance(TestConfig.class);
+        TestResources resources = injector.getInstance(TestResources.class);
+
+        Playwright playwright = Playwright.create();
+        BrowserType browserType = resolveBrowserType(playwright, config.getBrowser());
+        Browser browser = browserType.launch(new BrowserType.LaunchOptions()
+                .setHeadless(config.isHeadless())
+                .setSlowMo(config.getSlowMo()));
+        BrowserContext browserContext = browser.newContext();
+        Page page = browserContext.newPage();
+
+        page.setDefaultTimeout(config.getTimeoutMs());
+        page.setDefaultNavigationTimeout(config.getTimeoutMs());
+        page.setViewportSize(1920, 1080);
+
+        browserContext.tracing().start(new Tracing.StartOptions()
+                .setScreenshots(true)
+                .setSnapshots(true)
+                .setSources(true));
+
+        resources.setPlaywright(playwright);
+        resources.setBrowser(browser);
+        resources.setContext(browserContext);
+        resources.setPage(page);
+
+        Files.createDirectories(Path.of(TRACE_DIR));
+    }
+
+    @Override
+    public void afterEach(ExtensionContext context) throws Exception {
+        Injector injector = InjectorProvider.getInjector();
+        TestResources resources = injector.getInstance(TestResources.class);
+        BrowserContext browserContext = resources.getContext();
+
+        if (browserContext != null) {
+            Path tracePath = Path.of(TRACE_DIR, buildTraceFileName(context));
+            browserContext.tracing().stop(new Tracing.StopOptions().setPath(tracePath));
+        }
+
+        resources.clear();
+    }
+
+    private BrowserType resolveBrowserType(Playwright playwright, String browserName) {
+        String normalized = browserName.toLowerCase(Locale.ROOT);
+        return switch (normalized) {
+            case "firefox" -> playwright.firefox();
+            case "webkit" -> playwright.webkit();
+            default -> playwright.chromium();
+        };
+    }
+
+    private String buildTraceFileName(ExtensionContext context) {
+        String raw = context.getDisplayName();
+        String sanitized = raw.replaceAll("[^a-zA-Z0-9._-]", "_");
+        return sanitized + ".zip";
+    }
+}