Formatter: cursor position is saved when invoking autoformat. Fixes #2293

app/test/processing/app/AutoformatSavesCaretPositionTest.java

@@ -0,0 +1,46 @@
+package processing.app;
+
+import org.fest.swing.fixture.JMenuItemFixture;
+import org.junit.Test;
+import processing.app.helpers.JEditTextAreaFixture;
+
+import static org.junit.Assert.assertEquals;
+
+public class AutoformatSavesCaretPositionTest extends AbstractGUITest {
+
+  @Test
+  public void shouldSaveCaretPositionAfterAutoformat() {
+    JMenuItemFixture menuToolsAutoFormat = window.menuItem("menuToolsAutoFormat");
+    menuToolsAutoFormat.requireEnabled();
+
+    JEditTextAreaFixture editor = window.jEditTextArea("editor");
+    editor.setText("void setup() {\n" +
+            "              // put your setup code here, to run once:\n" +
+            "\n" +
+            "}\n" +
+            "\n" +
+            "void loop() {\n" +
+            "  // put your main code here, to run repeatedly:\n" +
+            "\n" +
+            "}");
+
+    editor.setCaretPosition(29); // right before the first // (double slash)
+
+    menuToolsAutoFormat.click();
+
+    String formattedText = editor.getText();
+    assertEquals("void setup() {\n" +
+            "  // put your setup code here, to run once:\n" +
+            "\n" +
+            "}\n" +
+            "\n" +
+            "void loop() {\n" +
+            "  // put your main code here, to run repeatedly:\n" +
+            "\n" +
+            "}", formattedText);
+
+    assertEquals(29, editor.getCaretPosition());
+
+  }
+
+}