From c2ae35540e78d4edfbc57d42bfa2fc166c38b8a5 Mon Sep 17 00:00:00 2001
From: Jay Berkenbilt <ejb@ql.org>
Date: Sun, 27 Jan 2019 08:00:32 -0500
Subject: Add boundary condition test for getUniqueResourceName

---
 qpdf/qtest/qpdf.test                 |   9 ++++++++-
 qpdf/qtest/qpdf/unique-resources.pdf | Bin 0 -> 849 bytes
 qpdf/test_driver.cc                  |  17 +++++++++++++++++
 3 files changed, 25 insertions(+), 1 deletion(-)
 create mode 100644 qpdf/qtest/qpdf/unique-resources.pdf

diff --git a/qpdf/qtest/qpdf.test b/qpdf/qtest/qpdf.test
index 817f6174..8f86844d 100644
--- a/qpdf/qtest/qpdf.test
+++ b/qpdf/qtest/qpdf.test
@@ -1032,12 +1032,19 @@ $td->runtest("detect foreign object in write",
 show_ntests();
 # ----------
 $td->notify("--- Merge Dictionary ---");
-$n_tests += 1;
+$n_tests += 3;
 
 $td->runtest("merge dictionary",
              {$td->COMMAND => "test_driver 50 merge-dict.pdf"},
              {$td->FILE => "merge-dict.out", $td->EXIT_STATUS => 0},
              $td->NORMALIZE_NEWLINES);
+$td->runtest("unique resource name",
+             {$td->COMMAND => "test_driver 60 minimal.pdf"},
+             {$td->STRING => "test 60 done\n", $td->EXIT_STATUS => 0},
+             $td->NORMALIZE_NEWLINES);
+$td->runtest("check output",
+             {$td->FILE => "a.pdf"},
+             {$td->FILE => "unique-resources.pdf"});
 
 show_ntests();
 # ----------
diff --git a/qpdf/qtest/qpdf/unique-resources.pdf b/qpdf/qtest/qpdf/unique-resources.pdf
new file mode 100644
index 00000000..1f789ea1
Binary files /dev/null and b/qpdf/qtest/qpdf/unique-resources.pdf differ
diff --git a/qpdf/test_driver.cc b/qpdf/test_driver.cc
index 57dad636..a03c4b98 100644
--- a/qpdf/test_driver.cc
+++ b/qpdf/test_driver.cc
@@ -2016,6 +2016,23 @@ void runtest(int n, char const* filename1, char const* arg2)
         w.setStaticID(true);
         w.write();
     }
+    else if (n == 60)
+    {
+        // Boundary condition testing for getUniqueResourceName
+        QPDFObjectHandle r1 = QPDFObjectHandle::newDictionary();
+        int min_suffix = 1;
+        for (int i = 1; i < 3; ++i)
+        {
+            std::string name = r1.getUniqueResourceName("/Quack", min_suffix);
+            r1.mergeResources(QPDFObjectHandle::parse("<< /Z << >> >>"));
+            r1.getKey("/Z").replaceKey(
+                name, QPDFObjectHandle::newString("moo"));
+        }
+        pdf.getTrailer().replaceKey("/QTest", r1);
+        QPDFWriter w(pdf, "a.pdf");
+        w.setStaticID(true);
+        w.write();
+    }
     else
     {
 	throw std::runtime_error(std::string("invalid test ") +
-- 
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