Add tests for CBA_AnnotIterator.

testing/resources/annotiter.pdf

Index: testing/resources/annotiter.pdf
diff --git a/testing/resources/annotiter.pdf b/testing/resources/annotiter.pdf
new file mode 100644
index 0000000000000000000000000000000000000000..2cb6d395d0088b1f8868c01ad83c87fdc5cade9f
--- /dev/null
+++ b/testing/resources/annotiter.pdf
@@ -0,0 +1,158 @@
+%PDF-1.7
+% ò¤ô
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+  /Type /Catalog
+  /Pages 2 0 R
+  /AcroForm 20 0 R
+>>
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+  /Type /Page
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+  /Resources <<
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+  >>
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+  /Type /Page
+  /Parent 2 0 R
+  /Resources <<
+    /Font <</F1 15 0 R>>
+  >>
+  /MediaBox [0 0 612 792]
+  /Annots [
+    22 0 R
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+>>
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+% Forms
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+  /Fields [21 0 R]
+>>
+endobj
+% Fields
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+  /T (MyField)
+  /Type /Annot
+  /Subtype /Widget
+  /Rect [100 100 500 500]
+  /Kids [
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+  /FT /Tx
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+  /T (Sub_LeftBottom)
+  /Type /Annot
+  /Subtype /Widget
+  /Rect [200 200 220 220]
+>>
+endobj
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+  /FT /Tx
+  /Parent 5 0 R
+  /T (Sub_RightTop)
+  /Type /Annot
+  /Subtype /Widget
+  /Rect [401 401 421 421]
+>>
+endobj
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+  /FT /Tx
+  /Parent 5 0 R
+  /T (Sub_LeftTop)
+  /Type /Annot
+  /Subtype /Widget
+  /Rect [201 400 221 420]
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+endobj
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+  /FT /Tx
+  /Parent 5 0 R
+  /T (Sub_RightBottom)
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+startxref
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+%%EOF