add negative test case and make tests non-lenient

src/UglyToad.PdfPig.Tests/Integration/SinglePageSimpleOpenOfficeTests.cs

@@ -17,7 +17,7 @@
         {
             var file = GetFilename();
 
-            using (var document = PdfDocument.Open(File.ReadAllBytes(file)))
+            using (var document = PdfDocument.Open(File.ReadAllBytes(file), ParsingOptions.LenientParsingOff))
             {
                 Assert.Equal(1, document.NumberOfPages);
             }
@@ -26,7 +26,7 @@
         [Fact]
         public void HasCorrectPageSize()
         {
-            using (var document = PdfDocument.Open(GetFilename()))
+            using (var document = PdfDocument.Open(GetFilename(), ParsingOptions.LenientParsingOff))
             {
                 var page = document.GetPage(1);
 
@@ -37,7 +37,7 @@
         [Fact]
         public void HasCorrectLetterBoundingBoxes()
         {
-            using (var document = PdfDocument.Open(GetFilename()))
+            using (var document = PdfDocument.Open(GetFilename(), ParsingOptions.LenientParsingOff))
             {
                 var page = document.GetPage(1);
 
@@ -72,7 +72,7 @@
         [Fact]
         public void GetsCorrectPageTextIgnoringHiddenCharacters()
         {
-            using (var document = PdfDocument.Open(GetFilename()))
+            using (var document = PdfDocument.Open(GetFilename(), ParsingOptions.LenientParsingOff))
             {
                 var page = document.GetPage(1);
 
@@ -81,5 +81,14 @@
                 Assert.Equal("I am a simple pdf.", text);
             }
         }
+
+        [Fact]
+        public void TryGetBookmarksFalse()
+        {
+            using (var document = PdfDocument.Open(GetFilename(), ParsingOptions.LenientParsingOff))
+            {
+                Assert.False(document.TryGetBookmarks(out _));
+            }
+        }
     }
 }