Add better support (hopefully that works in CI) for downloads; update this test to use that.

src/test/java/com/kingsrook/qqq/materialdashboard/lib/QBaseSeleniumTest.java

@@ -1,6 +1,11 @@
 package com.kingsrook.qqq.materialdashboard.lib;
 
 
+import java.io.File;
+import java.util.Arrays;
+import java.util.HashMap;
+import java.util.List;
+import com.kingsrook.qqq.backend.core.utils.CollectionUtils;
 import com.kingsrook.qqq.materialdashboard.lib.javalin.QSeleniumJavalin;
 import io.github.bonigarcia.wdm.WebDriverManager;
 import org.junit.jupiter.api.AfterEach;
@@ -11,6 +16,7 @@ import org.openqa.selenium.Dimension;
 import org.openqa.selenium.WebDriver;
 import org.openqa.selenium.chrome.ChromeDriver;
 import org.openqa.selenium.chrome.ChromeOptions;
+import static org.junit.jupiter.api.Assertions.fail;
 
 
 /*******************************************************************************
@@ -54,7 +60,15 @@ public class QBaseSeleniumTest
    @BeforeEach
    public void beforeEach()
    {
+      manageDownloadsDirectory();
+
+      HashMap<String, Object> chromePrefs = new HashMap<>();
+      chromePrefs.put("profile.default_content_settings.popups", 0);
+      chromePrefs.put("download.default_directory", getDownloadsDirectory());
+      chromeOptions.setExperimentalOption("prefs", chromePrefs);
+
       driver = new ChromeDriver(chromeOptions);
+
       driver.manage().window().setSize(new Dimension(1700, 1300));
       qSeleniumLib = new QSeleniumLib(driver);
 
@@ -68,6 +82,57 @@ public class QBaseSeleniumTest
 
 
 
+   /*******************************************************************************
+    **
+    *******************************************************************************/
+   private void manageDownloadsDirectory()
+   {
+      File downloadsDirectory = new File(getDownloadsDirectory());
+      if(!downloadsDirectory.exists())
+      {
+         if(!downloadsDirectory.mkdir())
+         {
+            fail("Could not create downloads directory: " + downloadsDirectory);
+         }
+      }
+
+      if(!downloadsDirectory.isDirectory())
+      {
+         fail("Downloads directory: " + downloadsDirectory + " is not a directory.");
+      }
+
+      for(File file : CollectionUtils.nonNullArray(downloadsDirectory.listFiles()))
+      {
+         if(!file.delete())
+         {
+            fail("Could not remove a file from the downloads directory: " + file.getAbsolutePath());
+         }
+      }
+   }
+
+
+
+   /*******************************************************************************
+    **
+    *******************************************************************************/
+   protected String getDownloadsDirectory()
+   {
+      return ("/tmp/selenium-downloads");
+   }
+
+
+
+   /*******************************************************************************
+    **
+    *******************************************************************************/
+   protected List<File> getDownloadedFiles()
+   {
+      File[] downloadedFiles = CollectionUtils.nonNullArray((new File(getDownloadsDirectory())).listFiles());
+      return (Arrays.stream(downloadedFiles).toList());
+   }
+
+
+
    /*******************************************************************************
     ** control if the test needs to start its own javalin server, or if we're running
     ** in an environment where an external web server is being used.

src/test/java/com/kingsrook/qqq/materialdashboard/tests/DashboardTableWidgetExportTest.java

@@ -22,11 +22,16 @@
 package com.kingsrook.qqq.materialdashboard.tests;
 
 
+import java.io.File;
+import java.io.IOException;
+import java.nio.charset.StandardCharsets;
 import com.kingsrook.qqq.materialdashboard.lib.QBaseSeleniumTest;
 import com.kingsrook.qqq.materialdashboard.lib.javalin.QSeleniumJavalin;
+import org.apache.commons.io.FileUtils;
 import org.junit.jupiter.api.Test;
 import org.openqa.selenium.By;
 import static org.assertj.core.api.Assertions.assertThat;
+import static org.junit.jupiter.api.Assertions.assertEquals;
 
 
 /*******************************************************************************
@@ -70,7 +75,7 @@ public class DashboardTableWidgetExportTest extends QBaseSeleniumTest
     **
     *******************************************************************************/
    @Test
-   void testDashboardTableWidgetExport()
+   void testDashboardTableWidgetExport() throws IOException
    {
       qSeleniumLib.gotoAndWaitForBreadcrumbHeader("/", "Greetings App");
 
@@ -89,16 +94,18 @@ public class DashboardTableWidgetExportTest extends QBaseSeleniumTest
          .findElement(By.cssSelector("button"))
          .click();
 
-      /////////////////////////////////////////////////////////////////////////////
-      // assert about the file that was downloaded - its name and some contents. //
-      /////////////////////////////////////////////////////////////////////////////
-      String latestFile = qSeleniumLib.getLatestChromeDownloadedFileInfo();
-      assertThat(latestFile).contains("Sample Table Widget");
-      assertThat(latestFile).contains(".csv");
-      assertThat(latestFile).contains("""
-         "Id"%2C"Name"%0A"1"%2C"Homer S."%0A""");
+      qSeleniumLib.waitForCondition("Should have downloaded 1 file", () -> getDownloadedFiles().size() == 1);
+      File csvFile = getDownloadedFiles().get(0);
+      assertThat(csvFile.getName()).matches("Sample Table Widget.*.csv");
+      String fileContents = FileUtils.readFileToString(csvFile, StandardCharsets.UTF_8);
+      assertEquals("""
+         "Id","Name"
+         "1","Homer S."
+         "2","Marge B."
+         "3","Bart J."
+         """, fileContents);
 
-      qSeleniumLib.waitForever();
+      // qSeleniumLib.waitForever();
    }
 
 }