add tests to check the start page for the next doc in a multi-doc export is set correctly based on the config option selected for page numbering.

Author: rs-fraser

src/test/java/com/researchspace/export/pdf/PdfProcessorTest.java

@@ -1,6 +1,7 @@
 package com.researchspace.export.pdf;
 
 import static com.researchspace.testutils.RSpaceTestUtils.loadTextResourceFromPdfDir;
+import static org.junit.jupiter.api.Assertions.assertEquals;
 import static org.junit.jupiter.api.Assertions.assertTrue;
 import static org.mockito.Mockito.any;
 import static org.mockito.Mockito.when;
@@ -85,6 +86,12 @@ public void outputNonAsciiCharactersTest(String nonAscii) throws Exception {
 
   @Test
   public void concatenatesFiles() throws Exception {
+    String output = concatTwoDocuments();
+    assertTrue(output.contains("This is document 1."));
+    assertTrue(output.contains("This is document 2."));
+  }
+
+  private String concatTwoDocuments() throws Exception{
     // create 2 pdf docs then concatenate and verify the output doc contains the 2 inputs
     String doc1Html = loadTextResourceFromPdfDir("doc1.html");
     ExportProcesserInput exportProcesserInput1 =
@@ -105,10 +112,25 @@ public void concatenatesFiles() throws Exception {
 
     List<File> filesToConcatenate = List.of(pdfDoc1, pdfDoc2);
     pdfProcessor.concatenateExportedFilesIntoOne(outputFile, filesToConcatenate, config);
-    String output = readPdfContent(outputFile);
+    return readPdfContent(outputFile);
+  }
 
-    assertTrue(output.contains("This is document 1."));
-    assertTrue(output.contains("This is document 2."));
+  @Test
+  public void testPageNumbersRestartedEachDoc() throws Exception {
+    concatTwoDocuments();
+
+    // config has start page reset to 0 i.e. next doc would begin at page 1, which is the default
+    assertEquals(0, config.getStartPage());
+  }
+
+  @Test
+  public void testPageNumbersContiguous() throws Exception {
+    config.setRestartPageNumberPerDoc(false);
+    concatTwoDocuments();
+
+    // config has start page as page 3 i.e. next doc would begin at page 4, since the config
+    // property to restart the page number on each doc is set to false
+    assertEquals(3, config.getStartPage());
   }
 
   private String readPdfContent(File outFile) throws IOException {