add test to make sure documentation is available

commafeed-server/src/test/java/com/commafeed/e2e/DocumentationIT.java

@@ -0,0 +1,38 @@
+package com.commafeed.e2e;
+
+import org.junit.jupiter.api.AfterEach;
+import org.junit.jupiter.api.BeforeEach;
+import org.junit.jupiter.api.Test;
+
+import com.microsoft.playwright.Browser;
+import com.microsoft.playwright.Page;
+import com.microsoft.playwright.Playwright;
+import com.microsoft.playwright.assertions.PlaywrightAssertions;
+
+import io.quarkus.test.junit.QuarkusTest;
+
+@QuarkusTest
+class DocumentationIT {
+
+	private final Playwright playwright = Playwright.create();
+	private final Browser browser = playwright.chromium().launch();
+
+	private Page page;
+
+	@BeforeEach
+	void init() {
+		page = browser.newContext().newPage();
+	}
+
+	@AfterEach
+	void cleanup() {
+		playwright.close();
+	}
+
+	@Test
+	void documentationAvailable() {
+		page.navigate("http://localhost:8085/#/api");
+		PlaywrightAssertions.assertThat(page.getByText("Download OpenAPI specification:")).isVisible();
+	}
+
+}