Merge 99c32d1 into 014b738

src/main/java/com/codeborne/selenide/Selenide.java

@@ -831,6 +831,15 @@ private static List<LogEntry> getLogEntries(String logType, Level logLevel) {
     }
   }
 
+  /**
+   * Return true if bottom of the page is reached
+   *
+   * Useful if you need to scroll down by x pixels unknown number of times.
+   */
+  public static boolean atBottom() {
+    return Selenide.executeJavaScript("return window.scrollY + window.innerHeight >= document.body.scrollHeight");
+  }
+
   private static <T> List<String> listToString(List<T> objects) {
     if (objects == null || objects.isEmpty()) {
       return emptyList();

src/test/java/integration/PageAtBottomTest.java

@@ -0,0 +1,39 @@
+package integration;
+
+import com.codeborne.selenide.Selenide;
+import org.junit.Before;
+import org.junit.Test;
+
+import static com.codeborne.selenide.Selenide.atBottom;
+import static com.codeborne.selenide.WebDriverRunner.isHtmlUnit;
+import static org.junit.Assert.assertFalse;
+import static org.junit.Assert.assertTrue;
+import static org.junit.Assume.assumeFalse;
+
+public class PageAtBottomTest extends IntegrationTest {
+  @Before
+  public void createScrollablePage() {
+    assumeFalse("Scrolling not supported in htmlunit", isHtmlUnit());
+    openFile("empty.html");
+    for (int i = 0; i < 200; i++) {
+      Selenide.executeJavaScript(
+            "var el = document.createElement(\"li\");" +
+                  "el.textContent=\"Element " + (i + 1) + "\";" +
+                  "document.body.appendChild(el);"
+      );
+    }
+  }
+
+  @Test
+  public void checkPageBottomIsReached() {
+    assertFalse("oops, we shouldn't be at the bottom yet! " + printScrollParams(), atBottom());
+    Selenide.executeJavaScript("return window.scrollTo(0, document.body.scrollHeight);");
+    assertTrue("oops we should have reached the bottom already! " + printScrollParams(), atBottom());
+  }
+
+  private String printScrollParams() {
+    return "\nwindow.scrollY=" + Selenide.executeJavaScript("return window.scrollY;") +
+          "\nwindow.innerHeight=" + Selenide.executeJavaScript("return window.innerHeight;") +
+          "\ndocument.body.scrollHeight=" + Selenide.executeJavaScript("return document.body.scrollHeight;");
+  }
+}