Initial import.

1 files changed, 677 insertions, 0 deletions

diff --git a/chromium/base/strings/string_piece_unittest.cc b/chromium/base/strings/string_piece_unittest.cc
new file mode 100644
index 00000000000..84ed9efca8b
--- /dev/null
+++ b/chromium/base/strings/string_piece_unittest.cc
@@ -0,0 +1,677 @@
+// Copyright (c) 2012 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#include <string>
+
+#include "base/strings/string16.h"
+#include "base/strings/string_piece.h"
+#include "base/strings/utf_string_conversions.h"
+#include "testing/gtest/include/gtest/gtest.h"
+
+namespace base {
+
+template <typename T>
+class CommonStringPieceTest : public ::testing::Test {
+ public:
+  static const T as_string(const char* input) {
+    return T(input);
+  }
+  static const T& as_string(const T& input) {
+    return input;
+  }
+};
+
+template <>
+class CommonStringPieceTest<string16> : public ::testing::Test {
+ public:
+  static const string16 as_string(const char* input) {
+    return ASCIIToUTF16(input);
+  }
+  static const string16 as_string(const std::string& input) {
+    return ASCIIToUTF16(input);
+  }
+};
+
+typedef ::testing::Types<std::string, string16> SupportedStringTypes;
+
+TYPED_TEST_CASE(CommonStringPieceTest, SupportedStringTypes);
+
+TYPED_TEST(CommonStringPieceTest, CheckComparisonOperators) {
+#define CMP_Y(op, x, y)                                                    \
+  {                                                                        \
+    TypeParam lhs(TestFixture::as_string(x));                              \
+    TypeParam rhs(TestFixture::as_string(y));                              \
+    ASSERT_TRUE( (BasicStringPiece<TypeParam>((lhs.c_str())) op            \
+                  BasicStringPiece<TypeParam>((rhs.c_str()))));            \
+    ASSERT_TRUE( (BasicStringPiece<TypeParam>((lhs.c_str())).compare(      \
+                      BasicStringPiece<TypeParam>((rhs.c_str()))) op 0));  \
+  }
+
+#define CMP_N(op, x, y)                                                    \
+  {                                                                        \
+    TypeParam lhs(TestFixture::as_string(x));                              \
+    TypeParam rhs(TestFixture::as_string(y));                              \
+    ASSERT_FALSE( (BasicStringPiece<TypeParam>((lhs.c_str())) op           \
+                  BasicStringPiece<TypeParam>((rhs.c_str()))));            \
+    ASSERT_FALSE( (BasicStringPiece<TypeParam>((lhs.c_str())).compare(     \
+                      BasicStringPiece<TypeParam>((rhs.c_str()))) op 0));  \
+  }
+
+  CMP_Y(==, "",   "");
+  CMP_Y(==, "a",  "a");
+  CMP_Y(==, "aa", "aa");
+  CMP_N(==, "a",  "");
+  CMP_N(==, "",   "a");
+  CMP_N(==, "a",  "b");
+  CMP_N(==, "a",  "aa");
+  CMP_N(==, "aa", "a");
+
+  CMP_N(!=, "",   "");
+  CMP_N(!=, "a",  "a");
+  CMP_N(!=, "aa", "aa");
+  CMP_Y(!=, "a",  "");
+  CMP_Y(!=, "",   "a");
+  CMP_Y(!=, "a",  "b");
+  CMP_Y(!=, "a",  "aa");
+  CMP_Y(!=, "aa", "a");
+
+  CMP_Y(<, "a",  "b");
+  CMP_Y(<, "a",  "aa");
+  CMP_Y(<, "aa", "b");
+  CMP_Y(<, "aa", "bb");
+  CMP_N(<, "a",  "a");
+  CMP_N(<, "b",  "a");
+  CMP_N(<, "aa", "a");
+  CMP_N(<, "b",  "aa");
+  CMP_N(<, "bb", "aa");
+
+  CMP_Y(<=, "a",  "a");
+  CMP_Y(<=, "a",  "b");
+  CMP_Y(<=, "a",  "aa");
+  CMP_Y(<=, "aa", "b");
+  CMP_Y(<=, "aa", "bb");
+  CMP_N(<=, "b",  "a");
+  CMP_N(<=, "aa", "a");
+  CMP_N(<=, "b",  "aa");
+  CMP_N(<=, "bb", "aa");
+
+  CMP_N(>=, "a",  "b");
+  CMP_N(>=, "a",  "aa");
+  CMP_N(>=, "aa", "b");
+  CMP_N(>=, "aa", "bb");
+  CMP_Y(>=, "a",  "a");
+  CMP_Y(>=, "b",  "a");
+  CMP_Y(>=, "aa", "a");
+  CMP_Y(>=, "b",  "aa");
+  CMP_Y(>=, "bb", "aa");
+
+  CMP_N(>, "a",  "a");
+  CMP_N(>, "a",  "b");
+  CMP_N(>, "a",  "aa");
+  CMP_N(>, "aa", "b");
+  CMP_N(>, "aa", "bb");
+  CMP_Y(>, "b",  "a");
+  CMP_Y(>, "aa", "a");
+  CMP_Y(>, "b",  "aa");
+  CMP_Y(>, "bb", "aa");
+
+  std::string x;
+  for (int i = 0; i < 256; i++) {
+    x += 'a';
+    std::string y = x;
+    CMP_Y(==, x, y);
+    for (int j = 0; j < i; j++) {
+      std::string z = x;
+      z[j] = 'b';       // Differs in position 'j'
+      CMP_N(==, x, z);
+    }
+  }
+
+#undef CMP_Y
+#undef CMP_N
+}
+
+TYPED_TEST(CommonStringPieceTest, CheckSTL) {
+  TypeParam alphabet(TestFixture::as_string("abcdefghijklmnopqrstuvwxyz"));
+  TypeParam abc(TestFixture::as_string("abc"));
+  TypeParam xyz(TestFixture::as_string("xyz"));
+  TypeParam foobar(TestFixture::as_string("foobar"));
+
+  BasicStringPiece<TypeParam> a(alphabet);
+  BasicStringPiece<TypeParam> b(abc);
+  BasicStringPiece<TypeParam> c(xyz);
+  BasicStringPiece<TypeParam> d(foobar);
+  BasicStringPiece<TypeParam> e;
+  TypeParam temp(TestFixture::as_string("123"));
+  temp += static_cast<typename TypeParam::value_type>(0);
+  temp += TestFixture::as_string("456");
+  BasicStringPiece<TypeParam> f(temp);
+
+  ASSERT_EQ(a[6], static_cast<typename TypeParam::value_type>('g'));
+  ASSERT_EQ(b[0], static_cast<typename TypeParam::value_type>('a'));
+  ASSERT_EQ(c[2], static_cast<typename TypeParam::value_type>('z'));
+  ASSERT_EQ(f[3], static_cast<typename TypeParam::value_type>('\0'));
+  ASSERT_EQ(f[5], static_cast<typename TypeParam::value_type>('5'));
+
+  ASSERT_EQ(*d.data(), static_cast<typename TypeParam::value_type>('f'));
+  ASSERT_EQ(d.data()[5], static_cast<typename TypeParam::value_type>('r'));
+  ASSERT_TRUE(e.data() == NULL);
+
+  ASSERT_EQ(*a.begin(), static_cast<typename TypeParam::value_type>('a'));
+  ASSERT_EQ(*(b.begin() + 2), static_cast<typename TypeParam::value_type>('c'));
+  ASSERT_EQ(*(c.end() - 1), static_cast<typename TypeParam::value_type>('z'));
+
+  ASSERT_EQ(*a.rbegin(), static_cast<typename TypeParam::value_type>('z'));
+  ASSERT_EQ(*(b.rbegin() + 2),
+            static_cast<typename TypeParam::value_type>('a'));
+  ASSERT_EQ(*(c.rend() - 1), static_cast<typename TypeParam::value_type>('x'));
+  ASSERT_TRUE(a.rbegin() + 26 == a.rend());
+
+  ASSERT_EQ(a.size(), 26U);
+  ASSERT_EQ(b.size(), 3U);
+  ASSERT_EQ(c.size(), 3U);
+  ASSERT_EQ(d.size(), 6U);
+  ASSERT_EQ(e.size(), 0U);
+  ASSERT_EQ(f.size(), 7U);
+
+  ASSERT_TRUE(!d.empty());
+  ASSERT_TRUE(d.begin() != d.end());
+  ASSERT_TRUE(d.begin() + 6 == d.end());
+
+  ASSERT_TRUE(e.empty());
+  ASSERT_TRUE(e.begin() == e.end());
+
+  d.clear();
+  ASSERT_EQ(d.size(), 0U);
+  ASSERT_TRUE(d.empty());
+  ASSERT_TRUE(d.data() == NULL);
+  ASSERT_TRUE(d.begin() == d.end());
+
+  ASSERT_GE(a.max_size(), a.capacity());
+  ASSERT_GE(a.capacity(), a.size());
+}
+
+// STL stuff only supported by the std::string version
+TEST(StringPieceTest, CheckSTL) {
+  StringPiece a("abcdefghijklmnopqrstuvwxyz");
+  StringPiece b("abc");
+  StringPiece c("xyz");
+  StringPiece d("foobar");
+  d.clear();
+  StringPiece e;
+  std::string temp("123");
+  temp += '\0';
+  temp += "456";
+  StringPiece f(temp);
+
+  char buf[4] = { '%', '%', '%', '%' };
+  ASSERT_EQ(a.copy(buf, 4), 4U);
+  ASSERT_EQ(buf[0], a[0]);
+  ASSERT_EQ(buf[1], a[1]);
+  ASSERT_EQ(buf[2], a[2]);
+  ASSERT_EQ(buf[3], a[3]);
+  ASSERT_EQ(a.copy(buf, 3, 7), 3U);
+  ASSERT_EQ(buf[0], a[7]);
+  ASSERT_EQ(buf[1], a[8]);
+  ASSERT_EQ(buf[2], a[9]);
+  ASSERT_EQ(buf[3], a[3]);
+  ASSERT_EQ(c.copy(buf, 99), 3U);
+  ASSERT_EQ(buf[0], c[0]);
+  ASSERT_EQ(buf[1], c[1]);
+  ASSERT_EQ(buf[2], c[2]);
+  ASSERT_EQ(buf[3], a[3]);
+
+  ASSERT_EQ(StringPiece::npos, std::string::npos);
+
+  ASSERT_EQ(a.find(b), 0U);
+  ASSERT_EQ(a.find(b, 1), StringPiece::npos);
+  ASSERT_EQ(a.find(c), 23U);
+  ASSERT_EQ(a.find(c, 9), 23U);
+  ASSERT_EQ(a.find(c, StringPiece::npos), StringPiece::npos);
+  ASSERT_EQ(b.find(c), StringPiece::npos);
+  ASSERT_EQ(b.find(c, StringPiece::npos), StringPiece::npos);
+  ASSERT_EQ(a.find(d), 0U);
+  ASSERT_EQ(a.find(e), 0U);
+  ASSERT_EQ(a.find(d, 12), 12U);
+  ASSERT_EQ(a.find(e, 17), 17U);
+  StringPiece g("xx not found bb");
+  ASSERT_EQ(a.find(g), StringPiece::npos);
+  // empty string nonsense
+  ASSERT_EQ(d.find(b), StringPiece::npos);
+  ASSERT_EQ(e.find(b), StringPiece::npos);
+  ASSERT_EQ(d.find(b, 4), StringPiece::npos);
+  ASSERT_EQ(e.find(b, 7), StringPiece::npos);
+
+  size_t empty_search_pos = std::string().find(std::string());
+  ASSERT_EQ(d.find(d), empty_search_pos);
+  ASSERT_EQ(d.find(e), empty_search_pos);
+  ASSERT_EQ(e.find(d), empty_search_pos);
+  ASSERT_EQ(e.find(e), empty_search_pos);
+  ASSERT_EQ(d.find(d, 4), std::string().find(std::string(), 4));
+  ASSERT_EQ(d.find(e, 4), std::string().find(std::string(), 4));
+  ASSERT_EQ(e.find(d, 4), std::string().find(std::string(), 4));
+  ASSERT_EQ(e.find(e, 4), std::string().find(std::string(), 4));
+
+  ASSERT_EQ(a.find('a'), 0U);
+  ASSERT_EQ(a.find('c'), 2U);
+  ASSERT_EQ(a.find('z'), 25U);
+  ASSERT_EQ(a.find('$'), StringPiece::npos);
+  ASSERT_EQ(a.find('\0'), StringPiece::npos);
+  ASSERT_EQ(f.find('\0'), 3U);
+  ASSERT_EQ(f.find('3'), 2U);
+  ASSERT_EQ(f.find('5'), 5U);
+  ASSERT_EQ(g.find('o'), 4U);
+  ASSERT_EQ(g.find('o', 4), 4U);
+  ASSERT_EQ(g.find('o', 5), 8U);
+  ASSERT_EQ(a.find('b', 5), StringPiece::npos);
+  // empty string nonsense
+  ASSERT_EQ(d.find('\0'), StringPiece::npos);
+  ASSERT_EQ(e.find('\0'), StringPiece::npos);
+  ASSERT_EQ(d.find('\0', 4), StringPiece::npos);
+  ASSERT_EQ(e.find('\0', 7), StringPiece::npos);
+  ASSERT_EQ(d.find('x'), StringPiece::npos);
+  ASSERT_EQ(e.find('x'), StringPiece::npos);
+  ASSERT_EQ(d.find('x', 4), StringPiece::npos);
+  ASSERT_EQ(e.find('x', 7), StringPiece::npos);
+
+  ASSERT_EQ(a.rfind(b), 0U);
+  ASSERT_EQ(a.rfind(b, 1), 0U);
+  ASSERT_EQ(a.rfind(c), 23U);
+  ASSERT_EQ(a.rfind(c, 22U), StringPiece::npos);
+  ASSERT_EQ(a.rfind(c, 1U), StringPiece::npos);
+  ASSERT_EQ(a.rfind(c, 0U), StringPiece::npos);
+  ASSERT_EQ(b.rfind(c), StringPiece::npos);
+  ASSERT_EQ(b.rfind(c, 0U), StringPiece::npos);
+  ASSERT_EQ(a.rfind(d), (size_t) a.as_string().rfind(std::string()));
+  ASSERT_EQ(a.rfind(e), a.as_string().rfind(std::string()));
+  ASSERT_EQ(a.rfind(d, 12), 12U);
+  ASSERT_EQ(a.rfind(e, 17), 17U);
+  ASSERT_EQ(a.rfind(g), StringPiece::npos);
+  ASSERT_EQ(d.rfind(b), StringPiece::npos);
+  ASSERT_EQ(e.rfind(b), StringPiece::npos);
+  ASSERT_EQ(d.rfind(b, 4), StringPiece::npos);
+  ASSERT_EQ(e.rfind(b, 7), StringPiece::npos);
+  // empty string nonsense
+  ASSERT_EQ(d.rfind(d, 4), std::string().rfind(std::string()));
+  ASSERT_EQ(e.rfind(d, 7), std::string().rfind(std::string()));
+  ASSERT_EQ(d.rfind(e, 4), std::string().rfind(std::string()));
+  ASSERT_EQ(e.rfind(e, 7), std::string().rfind(std::string()));
+  ASSERT_EQ(d.rfind(d), std::string().rfind(std::string()));
+  ASSERT_EQ(e.rfind(d), std::string().rfind(std::string()));
+  ASSERT_EQ(d.rfind(e), std::string().rfind(std::string()));
+  ASSERT_EQ(e.rfind(e), std::string().rfind(std::string()));
+
+  ASSERT_EQ(g.rfind('o'), 8U);
+  ASSERT_EQ(g.rfind('q'), StringPiece::npos);
+  ASSERT_EQ(g.rfind('o', 8), 8U);
+  ASSERT_EQ(g.rfind('o', 7), 4U);
+  ASSERT_EQ(g.rfind('o', 3), StringPiece::npos);
+  ASSERT_EQ(f.rfind('\0'), 3U);
+  ASSERT_EQ(f.rfind('\0', 12), 3U);
+  ASSERT_EQ(f.rfind('3'), 2U);
+  ASSERT_EQ(f.rfind('5'), 5U);
+  // empty string nonsense
+  ASSERT_EQ(d.rfind('o'), StringPiece::npos);
+  ASSERT_EQ(e.rfind('o'), StringPiece::npos);
+  ASSERT_EQ(d.rfind('o', 4), StringPiece::npos);
+  ASSERT_EQ(e.rfind('o', 7), StringPiece::npos);
+
+  ASSERT_EQ(
+      StringPiece("one,two:three;four").find_first_of(StringPiece(",:"), 1),
+      3U);
+  ASSERT_EQ(a.find_first_of(b), 0U);
+  ASSERT_EQ(a.find_first_of(b, 0), 0U);
+  ASSERT_EQ(a.find_first_of(b, 1), 1U);
+  ASSERT_EQ(a.find_first_of(b, 2), 2U);
+  ASSERT_EQ(a.find_first_of(b, 3), StringPiece::npos);
+  ASSERT_EQ(a.find_first_of(c), 23U);
+  ASSERT_EQ(a.find_first_of(c, 23), 23U);
+  ASSERT_EQ(a.find_first_of(c, 24), 24U);
+  ASSERT_EQ(a.find_first_of(c, 25), 25U);
+  ASSERT_EQ(a.find_first_of(c, 26), StringPiece::npos);
+  ASSERT_EQ(g.find_first_of(b), 13U);
+  ASSERT_EQ(g.find_first_of(c), 0U);
+  ASSERT_EQ(a.find_first_of(f), StringPiece::npos);
+  ASSERT_EQ(f.find_first_of(a), StringPiece::npos);
+  // empty string nonsense
+  ASSERT_EQ(a.find_first_of(d), StringPiece::npos);
+  ASSERT_EQ(a.find_first_of(e), StringPiece::npos);
+  ASSERT_EQ(d.find_first_of(b), StringPiece::npos);
+  ASSERT_EQ(e.find_first_of(b), StringPiece::npos);
+  ASSERT_EQ(d.find_first_of(d), StringPiece::npos);
+  ASSERT_EQ(e.find_first_of(d), StringPiece::npos);
+  ASSERT_EQ(d.find_first_of(e), StringPiece::npos);
+  ASSERT_EQ(e.find_first_of(e), StringPiece::npos);
+
+  ASSERT_EQ(a.find_first_not_of(b), 3U);
+  ASSERT_EQ(a.find_first_not_of(c), 0U);
+  ASSERT_EQ(b.find_first_not_of(a), StringPiece::npos);
+  ASSERT_EQ(c.find_first_not_of(a), StringPiece::npos);
+  ASSERT_EQ(f.find_first_not_of(a), 0U);
+  ASSERT_EQ(a.find_first_not_of(f), 0U);
+  ASSERT_EQ(a.find_first_not_of(d), 0U);
+  ASSERT_EQ(a.find_first_not_of(e), 0U);
+  // empty string nonsense
+  ASSERT_EQ(d.find_first_not_of(a), StringPiece::npos);
+  ASSERT_EQ(e.find_first_not_of(a), StringPiece::npos);
+  ASSERT_EQ(d.find_first_not_of(d), StringPiece::npos);
+  ASSERT_EQ(e.find_first_not_of(d), StringPiece::npos);
+  ASSERT_EQ(d.find_first_not_of(e), StringPiece::npos);
+  ASSERT_EQ(e.find_first_not_of(e), StringPiece::npos);
+
+  StringPiece h("====");
+  ASSERT_EQ(h.find_first_not_of('='), StringPiece::npos);
+  ASSERT_EQ(h.find_first_not_of('=', 3), StringPiece::npos);
+  ASSERT_EQ(h.find_first_not_of('\0'), 0U);
+  ASSERT_EQ(g.find_first_not_of('x'), 2U);
+  ASSERT_EQ(f.find_first_not_of('\0'), 0U);
+  ASSERT_EQ(f.find_first_not_of('\0', 3), 4U);
+  ASSERT_EQ(f.find_first_not_of('\0', 2), 2U);
+  // empty string nonsense
+  ASSERT_EQ(d.find_first_not_of('x'), StringPiece::npos);
+  ASSERT_EQ(e.find_first_not_of('x'), StringPiece::npos);
+  ASSERT_EQ(d.find_first_not_of('\0'), StringPiece::npos);
+  ASSERT_EQ(e.find_first_not_of('\0'), StringPiece::npos);
+
+  //  StringPiece g("xx not found bb");
+  StringPiece i("56");
+  ASSERT_EQ(h.find_last_of(a), StringPiece::npos);
+  ASSERT_EQ(g.find_last_of(a), g.size()-1);
+  ASSERT_EQ(a.find_last_of(b), 2U);
+  ASSERT_EQ(a.find_last_of(c), a.size()-1);
+  ASSERT_EQ(f.find_last_of(i), 6U);
+  ASSERT_EQ(a.find_last_of('a'), 0U);
+  ASSERT_EQ(a.find_last_of('b'), 1U);
+  ASSERT_EQ(a.find_last_of('z'), 25U);
+  ASSERT_EQ(a.find_last_of('a', 5), 0U);
+  ASSERT_EQ(a.find_last_of('b', 5), 1U);
+  ASSERT_EQ(a.find_last_of('b', 0), StringPiece::npos);
+  ASSERT_EQ(a.find_last_of('z', 25), 25U);
+  ASSERT_EQ(a.find_last_of('z', 24), StringPiece::npos);
+  ASSERT_EQ(f.find_last_of(i, 5), 5U);
+  ASSERT_EQ(f.find_last_of(i, 6), 6U);
+  ASSERT_EQ(f.find_last_of(a, 4), StringPiece::npos);
+  // empty string nonsense
+  ASSERT_EQ(f.find_last_of(d), StringPiece::npos);
+  ASSERT_EQ(f.find_last_of(e), StringPiece::npos);
+  ASSERT_EQ(f.find_last_of(d, 4), StringPiece::npos);
+  ASSERT_EQ(f.find_last_of(e, 4), StringPiece::npos);
+  ASSERT_EQ(d.find_last_of(d), StringPiece::npos);
+  ASSERT_EQ(d.find_last_of(e), StringPiece::npos);
+  ASSERT_EQ(e.find_last_of(d), StringPiece::npos);
+  ASSERT_EQ(e.find_last_of(e), StringPiece::npos);
+  ASSERT_EQ(d.find_last_of(f), StringPiece::npos);
+  ASSERT_EQ(e.find_last_of(f), StringPiece::npos);
+  ASSERT_EQ(d.find_last_of(d, 4), StringPiece::npos);
+  ASSERT_EQ(d.find_last_of(e, 4), StringPiece::npos);
+  ASSERT_EQ(e.find_last_of(d, 4), StringPiece::npos);
+  ASSERT_EQ(e.find_last_of(e, 4), StringPiece::npos);
+  ASSERT_EQ(d.find_last_of(f, 4), StringPiece::npos);
+  ASSERT_EQ(e.find_last_of(f, 4), StringPiece::npos);
+
+  ASSERT_EQ(a.find_last_not_of(b), a.size()-1);
+  ASSERT_EQ(a.find_last_not_of(c), 22U);
+  ASSERT_EQ(b.find_last_not_of(a), StringPiece::npos);
+  ASSERT_EQ(b.find_last_not_of(b), StringPiece::npos);
+  ASSERT_EQ(f.find_last_not_of(i), 4U);
+  ASSERT_EQ(a.find_last_not_of(c, 24), 22U);
+  ASSERT_EQ(a.find_last_not_of(b, 3), 3U);
+  ASSERT_EQ(a.find_last_not_of(b, 2), StringPiece::npos);
+  // empty string nonsense
+  ASSERT_EQ(f.find_last_not_of(d), f.size()-1);
+  ASSERT_EQ(f.find_last_not_of(e), f.size()-1);
+  ASSERT_EQ(f.find_last_not_of(d, 4), 4U);
+  ASSERT_EQ(f.find_last_not_of(e, 4), 4U);
+  ASSERT_EQ(d.find_last_not_of(d), StringPiece::npos);
+  ASSERT_EQ(d.find_last_not_of(e), StringPiece::npos);
+  ASSERT_EQ(e.find_last_not_of(d), StringPiece::npos);
+  ASSERT_EQ(e.find_last_not_of(e), StringPiece::npos);
+  ASSERT_EQ(d.find_last_not_of(f), StringPiece::npos);
+  ASSERT_EQ(e.find_last_not_of(f), StringPiece::npos);
+  ASSERT_EQ(d.find_last_not_of(d, 4), StringPiece::npos);
+  ASSERT_EQ(d.find_last_not_of(e, 4), StringPiece::npos);
+  ASSERT_EQ(e.find_last_not_of(d, 4), StringPiece::npos);
+  ASSERT_EQ(e.find_last_not_of(e, 4), StringPiece::npos);
+  ASSERT_EQ(d.find_last_not_of(f, 4), StringPiece::npos);
+  ASSERT_EQ(e.find_last_not_of(f, 4), StringPiece::npos);
+
+  ASSERT_EQ(h.find_last_not_of('x'), h.size() - 1);
+  ASSERT_EQ(h.find_last_not_of('='), StringPiece::npos);
+  ASSERT_EQ(b.find_last_not_of('c'), 1U);
+  ASSERT_EQ(h.find_last_not_of('x', 2), 2U);
+  ASSERT_EQ(h.find_last_not_of('=', 2), StringPiece::npos);
+  ASSERT_EQ(b.find_last_not_of('b', 1), 0U);
+  // empty string nonsense
+  ASSERT_EQ(d.find_last_not_of('x'), StringPiece::npos);
+  ASSERT_EQ(e.find_last_not_of('x'), StringPiece::npos);
+  ASSERT_EQ(d.find_last_not_of('\0'), StringPiece::npos);
+  ASSERT_EQ(e.find_last_not_of('\0'), StringPiece::npos);
+
+  ASSERT_EQ(a.substr(0, 3), b);
+  ASSERT_EQ(a.substr(23), c);
+  ASSERT_EQ(a.substr(23, 3), c);
+  ASSERT_EQ(a.substr(23, 99), c);
+  ASSERT_EQ(a.substr(0), a);
+  ASSERT_EQ(a.substr(3, 2), "de");
+  // empty string nonsense
+  ASSERT_EQ(a.substr(99, 2), e);
+  ASSERT_EQ(d.substr(99), e);
+  ASSERT_EQ(d.substr(0, 99), e);
+  ASSERT_EQ(d.substr(99, 99), e);
+}
+
+TYPED_TEST(CommonStringPieceTest, CheckCustom) {
+  TypeParam foobar(TestFixture::as_string("foobar"));
+  BasicStringPiece<TypeParam> a(foobar);
+  TypeParam s1(TestFixture::as_string("123"));
+  s1 += static_cast<typename TypeParam::value_type>('\0');
+  s1 += TestFixture::as_string("456");
+  BasicStringPiece<TypeParam> b(s1);
+  BasicStringPiece<TypeParam> e;
+  TypeParam s2;
+
+  // remove_prefix
+  BasicStringPiece<TypeParam> c(a);
+  c.remove_prefix(3);
+  ASSERT_EQ(c, TestFixture::as_string("bar"));
+  c = a;
+  c.remove_prefix(0);
+  ASSERT_EQ(c, a);
+  c.remove_prefix(c.size());
+  ASSERT_EQ(c, e);
+
+  // remove_suffix
+  c = a;
+  c.remove_suffix(3);
+  ASSERT_EQ(c, TestFixture::as_string("foo"));
+  c = a;
+  c.remove_suffix(0);
+  ASSERT_EQ(c, a);
+  c.remove_suffix(c.size());
+  ASSERT_EQ(c, e);
+
+  // set
+  c.set(foobar.c_str());
+  ASSERT_EQ(c, a);
+  c.set(foobar.c_str(), 6);
+  ASSERT_EQ(c, a);
+  c.set(foobar.c_str(), 0);
+  ASSERT_EQ(c, e);
+  c.set(foobar.c_str(), 7);  // Note, has an embedded NULL
+  ASSERT_NE(c, a);
+
+  // as_string
+  TypeParam s3(a.as_string().c_str(), 7);  // Note, has an embedded NULL
+  ASSERT_TRUE(c == s3);
+  TypeParam s4(e.as_string());
+  ASSERT_TRUE(s4.empty());
+}
+
+TEST(StringPieceTest, CheckCustom) {
+  StringPiece a("foobar");
+  std::string s1("123");
+  s1 += '\0';
+  s1 += "456";
+  StringPiece b(s1);
+  StringPiece e;
+  std::string s2;
+
+  // CopyToString
+  a.CopyToString(&s2);
+  ASSERT_EQ(s2.size(), 6U);
+  ASSERT_EQ(s2, "foobar");
+  b.CopyToString(&s2);
+  ASSERT_EQ(s2.size(), 7U);
+  ASSERT_EQ(s1, s2);
+  e.CopyToString(&s2);
+  ASSERT_TRUE(s2.empty());
+
+  // AppendToString
+  s2.erase();
+  a.AppendToString(&s2);
+  ASSERT_EQ(s2.size(), 6U);
+  ASSERT_EQ(s2, "foobar");
+  a.AppendToString(&s2);
+  ASSERT_EQ(s2.size(), 12U);
+  ASSERT_EQ(s2, "foobarfoobar");
+
+  // starts_with
+  ASSERT_TRUE(a.starts_with(a));
+  ASSERT_TRUE(a.starts_with("foo"));
+  ASSERT_TRUE(a.starts_with(e));
+  ASSERT_TRUE(b.starts_with(s1));
+  ASSERT_TRUE(b.starts_with(b));
+  ASSERT_TRUE(b.starts_with(e));
+  ASSERT_TRUE(e.starts_with(""));
+  ASSERT_TRUE(!a.starts_with(b));
+  ASSERT_TRUE(!b.starts_with(a));
+  ASSERT_TRUE(!e.starts_with(a));
+
+  // ends with
+  ASSERT_TRUE(a.ends_with(a));
+  ASSERT_TRUE(a.ends_with("bar"));
+  ASSERT_TRUE(a.ends_with(e));
+  ASSERT_TRUE(b.ends_with(s1));
+  ASSERT_TRUE(b.ends_with(b));
+  ASSERT_TRUE(b.ends_with(e));
+  ASSERT_TRUE(e.ends_with(""));
+  ASSERT_TRUE(!a.ends_with(b));
+  ASSERT_TRUE(!b.ends_with(a));
+  ASSERT_TRUE(!e.ends_with(a));
+
+  StringPiece c;
+  c.set(static_cast<const void*>("foobar"), 6);
+  ASSERT_EQ(c, a);
+  c.set(static_cast<const void*>("foobar"), 0);
+  ASSERT_EQ(c, e);
+  c.set(static_cast<const void*>("foobar"), 7);
+  ASSERT_NE(c, a);
+}
+
+TYPED_TEST(CommonStringPieceTest, CheckNULL) {
+  // we used to crash here, but now we don't.
+  BasicStringPiece<TypeParam> s(NULL);
+  ASSERT_EQ(s.data(), (const typename TypeParam::value_type*)NULL);
+  ASSERT_EQ(s.size(), 0U);
+
+  s.set(NULL);
+  ASSERT_EQ(s.data(), (const typename TypeParam::value_type*)NULL);
+  ASSERT_EQ(s.size(), 0U);
+
+  TypeParam str = s.as_string();
+  ASSERT_EQ(str.length(), 0U);
+  ASSERT_EQ(str, TypeParam());
+}
+
+TYPED_TEST(CommonStringPieceTest, CheckComparisons2) {
+  TypeParam alphabet(TestFixture::as_string("abcdefghijklmnopqrstuvwxyz"));
+  TypeParam alphabet_z(TestFixture::as_string("abcdefghijklmnopqrstuvwxyzz"));
+  TypeParam alphabet_y(TestFixture::as_string("abcdefghijklmnopqrstuvwxyy"));
+  BasicStringPiece<TypeParam> abc(alphabet);
+
+  // check comparison operations on strings longer than 4 bytes.
+  ASSERT_TRUE(abc == BasicStringPiece<TypeParam>(alphabet));
+  ASSERT_TRUE(abc.compare(BasicStringPiece<TypeParam>(alphabet)) == 0);
+
+  ASSERT_TRUE(abc < BasicStringPiece<TypeParam>(alphabet_z));
+  ASSERT_TRUE(abc.compare(BasicStringPiece<TypeParam>(alphabet_z)) < 0);
+
+  ASSERT_TRUE(abc > BasicStringPiece<TypeParam>(alphabet_y));
+  ASSERT_TRUE(abc.compare(BasicStringPiece<TypeParam>(alphabet_y)) > 0);
+}
+
+// Test operations only supported by std::string version.
+TEST(StringPieceTest, CheckComparisons2) {
+  StringPiece abc("abcdefghijklmnopqrstuvwxyz");
+
+  // starts_with
+  ASSERT_TRUE(abc.starts_with(abc));
+  ASSERT_TRUE(abc.starts_with("abcdefghijklm"));
+  ASSERT_TRUE(!abc.starts_with("abcdefguvwxyz"));
+
+  // ends_with
+  ASSERT_TRUE(abc.ends_with(abc));
+  ASSERT_TRUE(!abc.ends_with("abcdefguvwxyz"));
+  ASSERT_TRUE(abc.ends_with("nopqrstuvwxyz"));
+}
+
+TYPED_TEST(CommonStringPieceTest, StringCompareNotAmbiguous) {
+  ASSERT_TRUE(TestFixture::as_string("hello").c_str() ==
+              TestFixture::as_string("hello"));
+  ASSERT_TRUE(TestFixture::as_string("hello").c_str() <
+              TestFixture::as_string("world"));
+}
+
+TYPED_TEST(CommonStringPieceTest, HeterogenousStringPieceEquals) {
+  TypeParam hello(TestFixture::as_string("hello"));
+
+  ASSERT_TRUE(BasicStringPiece<TypeParam>(hello) == hello);
+  ASSERT_TRUE(hello.c_str() == BasicStringPiece<TypeParam>(hello));
+}
+
+// string16-specific stuff
+TEST(StringPiece16Test, CheckSTL) {
+  // Check some non-ascii characters.
+  string16 fifth(ASCIIToUTF16("123"));
+  fifth.push_back(0x0000);
+  fifth.push_back(0xd8c5);
+  fifth.push_back(0xdffe);
+  StringPiece16 f(fifth);
+
+  ASSERT_EQ(f[3], '\0');
+  ASSERT_EQ(f[5], static_cast<char16>(0xdffe));
+
+  ASSERT_EQ(f.size(), 6U);
+}
+
+
+
+TEST(StringPiece16Test, CheckConversion) {
+  // Make sure that we can convert from UTF8 to UTF16 and back. We use a two
+  // byte character (G clef) to test this.
+  ASSERT_EQ(
+      UTF16ToUTF8(
+          StringPiece16(UTF8ToUTF16("\xf0\x9d\x84\x9e")).as_string()),
+      "\xf0\x9d\x84\x9e");
+}
+
+TYPED_TEST(CommonStringPieceTest, CheckConstructors) {
+  TypeParam str(TestFixture::as_string("hello world"));
+  TypeParam empty;
+
+  ASSERT_TRUE(str == BasicStringPiece<TypeParam>(str));
+  ASSERT_TRUE(str == BasicStringPiece<TypeParam>(str.c_str()));
+  ASSERT_TRUE(TestFixture::as_string("hello") ==
+              BasicStringPiece<TypeParam>(str.c_str(), 5));
+  ASSERT_TRUE(empty == BasicStringPiece<TypeParam>(str.c_str(), 0U));
+  ASSERT_TRUE(empty == BasicStringPiece<TypeParam>(NULL));
+  ASSERT_TRUE(empty == BasicStringPiece<TypeParam>(NULL, 0U));
+  ASSERT_TRUE(empty == BasicStringPiece<TypeParam>());
+  ASSERT_TRUE(str == BasicStringPiece<TypeParam>(str.begin(), str.end()));
+  ASSERT_TRUE(empty == BasicStringPiece<TypeParam>(str.begin(), str.begin()));
+  ASSERT_TRUE(empty == BasicStringPiece<TypeParam>(empty));
+  ASSERT_TRUE(empty == BasicStringPiece<TypeParam>(empty.begin(), empty.end()));
+}
+
+}  // namespace base