BAEL-1203 Apache POI PowerPoint (#3090)

* Added Apache-POI PowerPoint

* Adjusted format + retrieve all placeholder

apache-poi/src/test/java/com/baeldung/poi/powerpoint/PowerPointIntegrationTest.java

@@ -0,0 +1,77 @@
+package com.baeldung.poi.powerpoint;
+
+import org.apache.poi.xslf.usermodel.XMLSlideShow;
+import org.apache.poi.xslf.usermodel.XSLFShape;
+import org.apache.poi.xslf.usermodel.XSLFSlide;
+import org.junit.After;
+import org.junit.Assert;
+import org.junit.Before;
+import org.junit.Test;
+
+import java.io.File;
+import java.util.List;
+
+public class PowerPointIntegrationTest {
+
+    private PowerPointHelper pph;
+    private String fileLocation;
+    private static final String FILE_NAME = "presentation.pptx";
+
+    @Before
+    public void setUp() throws Exception {
+        File currDir = new File(".");
+        String path = currDir.getAbsolutePath();
+        fileLocation = path.substring(0, path.length() - 1) + FILE_NAME;
+
+        pph = new PowerPointHelper();
+        pph.createPresentation(fileLocation);
+    }
+
+    @Test
+    public void whenReadingAPresentation_thenOK() throws Exception {
+        XMLSlideShow xmlSlideShow = pph.readingExistingSlideShow(fileLocation);
+
+        Assert.assertNotNull(xmlSlideShow);
+        Assert.assertEquals(4, xmlSlideShow.getSlides().size());
+    }
+
+    @Test
+    public void whenRetrievingThePlaceholdersForEachSlide_thenOK() throws Exception {
+        XMLSlideShow xmlSlideShow = pph.readingExistingSlideShow(fileLocation);
+
+        List<XSLFShape> onlyTitleSlidePlaceholders = pph.retrieveTemplatePlaceholders(xmlSlideShow.getSlides().get(0));
+        List<XSLFShape> titleAndBodySlidePlaceholders = pph.retrieveTemplatePlaceholders(xmlSlideShow.getSlides().get(1));
+        List<XSLFShape> emptySlidePlaceholdes = pph.retrieveTemplatePlaceholders(xmlSlideShow.getSlides().get(3));
+
+        Assert.assertEquals(1, onlyTitleSlidePlaceholders.size());
+        Assert.assertEquals(2, titleAndBodySlidePlaceholders.size());
+        Assert.assertEquals(0, emptySlidePlaceholdes.size());
+
+    }
+
+    @Test
+    public void whenSortingSlides_thenOK() throws Exception {
+        XMLSlideShow xmlSlideShow = pph.readingExistingSlideShow(fileLocation);
+        XSLFSlide slide4 = xmlSlideShow.getSlides().get(3);
+        pph.reorderSlide(xmlSlideShow, 3, 1);
+
+        Assert.assertEquals(slide4, xmlSlideShow.getSlides().get(1));
+    }
+
+    @Test
+    public void givenPresentation_whenDeletingASlide_thenOK() throws Exception {
+        XMLSlideShow xmlSlideShow = pph.readingExistingSlideShow(fileLocation);
+        pph.deleteSlide(xmlSlideShow, 3);
+
+        Assert.assertEquals(3, xmlSlideShow.getSlides().size());
+    }
+
+    @After
+    public void tearDown() throws Exception {
+        File testFile = new File(fileLocation);
+        if (testFile.exists()) {
+            testFile.delete();
+        }
+        pph = null;
+    }
+}