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diff --git a/src/unittest/trietest.cc b/src/unittest/trietest.cc
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+/*
+ * Copyright (c) 2012 Google
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met: redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer;
+ * redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution;
+ * neither the name of the copyright holders nor the names of its
+ * contributors may be used to endorse or promote products derived from
+ * this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ * Authors: Gabe Black
+ */
+
+#include <cassert>
+#include <iostream>
+
+#include "base/cprintf.hh"
+#include "base/trie.hh"
+#include "base/types.hh"
+#include "unittest/unittest.hh"
+
+using UnitTest::setCase;
+
+typedef Trie<Addr, uint32_t> TestTrie;
+
+int
+main()
+{
+ // Create an empty Ptr and verify it's data pointer is NULL.
+ setCase("An empty trie.");
+ TestTrie trie1;
+ trie1.dump("Empty");
+ cprintf("\n\n");
+
+ setCase("A single entry.");
+ trie1.insert(0x0123456789abcdef, 40, (uint32_t *)(uintptr_t)(1));
+ trie1.dump("One entry");
+ cprintf("\n\n");
+
+ setCase("Two entries, one on the way to the other.");
+ TestTrie trie2;
+ trie2.insert(0x0123456789abcdef, 40, (uint32_t *)(uintptr_t)(1));
+ trie2.insert(0x0123456789abcdef, 36, (uint32_t *)(uintptr_t)(2));
+ trie2.dump("Two entries inline v1");
+ cprintf("\n\n");
+
+ TestTrie trie3;
+ trie3.insert(0x0123456789abcdef, 36, (uint32_t *)(uintptr_t)(2));
+ trie3.insert(0x0123456789abcdef, 40, (uint32_t *)(uintptr_t)(1));
+ trie3.dump("Two entries inline v2");
+ cprintf("\n\n");
+
+ setCase("Two entries on different paths.");
+ TestTrie trie4;
+ trie4.insert(0x0123456789abcdef, 40, (uint32_t *)(uintptr_t)(2));
+ trie4.insert(0x0123456776543210, 40, (uint32_t *)(uintptr_t)(1));
+ trie4.dump("Two split entries");
+ cprintf("\n\n");
+
+ setCase("Skipping past an entry but not two.");
+ TestTrie trie5;
+ trie5.insert(0x0123456789000000, 40, (uint32_t *)(uintptr_t)(4));
+ trie5.insert(0x0123000000000000, 40, (uint32_t *)(uintptr_t)(1));
+ trie5.insert(0x0123456780000000, 40, (uint32_t *)(uintptr_t)(3));
+ trie5.insert(0x0123456700000000, 40, (uint32_t *)(uintptr_t)(2));
+ trie5.dump("Complex insertion");
+ cprintf("\n\n");
+
+ setCase("Looking things up.");
+ EXPECT_EQ((uintptr_t)trie5.lookup(0x0123000000000000), 1);
+ EXPECT_EQ((uintptr_t)trie5.lookup(0x0123456700000000), 2);
+ EXPECT_EQ((uintptr_t)trie5.lookup(0x0123456780000000), 3);
+ EXPECT_EQ((uintptr_t)trie5.lookup(0x0123456789000000), 4);
+
+ setCase("Removing entries.");
+ TestTrie trie6;
+ TestTrie::Handle node1, node2;
+ trie6.insert(0x0123456789000000, 40, (uint32_t *)(uintptr_t)(4));
+ trie6.insert(0x0123000000000000, 40, (uint32_t *)(uintptr_t)(1));
+ trie6.insert(0x0123456780000000, 40, (uint32_t *)(uintptr_t)(3));
+ node1 = trie6.insert(0x0123456700000000, 40, (uint32_t *)(uintptr_t)(2));
+ node2 = trie6.insert(0x0123456700000000, 32, (uint32_t *)(uintptr_t)(10));
+ trie6.dump("Fill before removal");
+ cprintf("\n\n");
+
+ EXPECT_EQ((uintptr_t)trie6.lookup(0x0123000000000000), 1);
+ EXPECT_EQ((uintptr_t)trie6.lookup(0x0123456700000000), 10);
+ EXPECT_EQ((uintptr_t)trie6.lookup(0x0123456780000000), 10);
+ EXPECT_EQ((uintptr_t)trie6.lookup(0x0123456789000000), 10);
+
+ trie6.remove(node2);
+ trie6.dump("One node removed");
+ cprintf("\n\n");
+
+ EXPECT_EQ((uintptr_t)trie6.lookup(0x0123000000000000), 1);
+ EXPECT_EQ((uintptr_t)trie6.lookup(0x0123456700000000), 2);
+ EXPECT_EQ((uintptr_t)trie6.lookup(0x0123456780000000), 3);
+ EXPECT_EQ((uintptr_t)trie6.lookup(0x0123456789000000), 4);
+
+ trie6.remove(node1);
+ trie6.dump("Two nodes removed");
+ cprintf("\n\n");
+
+ EXPECT_EQ((uintptr_t)trie6.lookup(0x0123000000000000), 1);
+ EXPECT_EQ(trie6.lookup(0x0123456700000000), NULL);
+ EXPECT_EQ((uintptr_t)trie6.lookup(0x0123456780000000), 3);
+ EXPECT_EQ((uintptr_t)trie6.lookup(0x0123456789000000), 4);
+
+ return UnitTest::printResults();
+}