Make it possible to build url/ without ICU on android.

url/url_canon_icu_unittest.cc

Index: url/url_canon_icu_unittest.cc
diff --git a/url/url_canon_icu_unittest.cc b/url/url_canon_icu_unittest.cc
new file mode 100644
index 0000000000000000000000000000000000000000..83f6083c0b7cccc875eff63599acfe55dae39314
--- /dev/null
+++ b/url/url_canon_icu_unittest.cc
@@ -0,0 +1,167 @@
+// Copyright 2013 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 "base/macros.h"
+#include "testing/gtest/include/gtest/gtest.h"
+#include "third_party/icu/source/common/unicode/ucnv.h"
+#include "url/url_canon.h"
+#include "url/url_canon_icu.h"
+#include "url/url_canon_stdstring.h"
+#include "url/url_test_utils.h"
+
+// Some implementations of base/basictypes.h may define ARRAYSIZE.
+// If it's not defined, we define it to the ARRAYSIZE_UNSAFE macro
+// which is in our version of basictypes.h.
+#ifndef ARRAYSIZE
+#define ARRAYSIZE ARRAYSIZE_UNSAFE
+#endif
+
+namespace url {
+
+using test_utils::WStringToUTF16;
+
+namespace {
+
+// Wrapper around a UConverter object that managers creation and destruction.
+class UConvScoper {
+ public:
+  explicit UConvScoper(const char* charset_name) {
+    UErrorCode err = U_ZERO_ERROR;
+    converter_ = ucnv_open(charset_name, &err);
+  }
+
+  ~UConvScoper() {
+    if (converter_)
+      ucnv_close(converter_);
+  }
+
+  // Returns the converter object, may be NULL.
+  UConverter* converter() const { return converter_; }
+
+ private:
+  UConverter* converter_;
+};
+
+TEST(URLCanonIcuTest, ICUCharsetConverter) {
+  struct ICUCase {
+    const wchar_t* input;
+    const char* encoding;
+    const char* expected;
+  } icu_cases[] = {
+      // UTF-8.
+    {L"Hello, world", "utf-8", "Hello, world"},
+    {L"\x4f60\x597d", "utf-8", "\xe4\xbd\xa0\xe5\xa5\xbd"},
+      // Non-BMP UTF-8.
+    {L"!\xd800\xdf00!", "utf-8", "!\xf0\x90\x8c\x80!"},
+      // Big5
+    {L"\x4f60\x597d", "big5", "\xa7\x41\xa6\x6e"},
+      // Unrepresentable character in the destination set.
+    {L"hello\x4f60\x06de\x597dworld", "big5",
+      "hello\xa7\x41%26%231758%3B\xa6\x6eworld"},
+  };
+
+  for (size_t i = 0; i < ARRAYSIZE(icu_cases); i++) {
+    UConvScoper conv(icu_cases[i].encoding);
+    ASSERT_TRUE(conv.converter() != NULL);
+    ICUCharsetConverter converter(conv.converter());
+
+    std::string str;
+    StdStringCanonOutput output(&str);
+
+    base::string16 input_str(WStringToUTF16(icu_cases[i].input));
+    int input_len = static_cast<int>(input_str.length());
+    converter.ConvertFromUTF16(input_str.c_str(), input_len, &output);
+    output.Complete();
+
+    EXPECT_STREQ(icu_cases[i].expected, str.c_str());
+  }
+
+  // Test string sizes around the resize boundary for the output to make sure
+  // the converter resizes as needed.
+  const int static_size = 16;
+  UConvScoper conv("utf-8");
+  ASSERT_TRUE(conv.converter());
+  ICUCharsetConverter converter(conv.converter());
+  for (int i = static_size - 2; i <= static_size + 2; i++) {
+    // Make a string with the appropriate length.
+    base::string16 input;
+    for (int ch = 0; ch < i; ch++)
+      input.push_back('a');
+
+    RawCanonOutput<static_size> output;
+    converter.ConvertFromUTF16(input.c_str(), static_cast<int>(input.length()),
+                               &output);
+    EXPECT_EQ(input.length(), static_cast<size_t>(output.length()));
+  }
+}
+
+TEST(URLCanonIcuTest, QueryWithConverter) {
+  struct QueryCase {
+    const char* input8;
+    const wchar_t* input16;
+    const char* encoding;
+    const char* expected;
+  } query_cases[] = {
+      // Regular ASCII case in some different encodings.
+    {"foo=bar", L"foo=bar", "utf-8", "?foo=bar"},
+    {"foo=bar", L"foo=bar", "shift_jis", "?foo=bar"},
+    {"foo=bar", L"foo=bar", "gb2312", "?foo=bar"},
+      // Chinese input/output
+    {"q=\xe4\xbd\xa0\xe5\xa5\xbd", L"q=\x4f60\x597d", "gb2312",
+      "?q=%C4%E3%BA%C3"},
+    {"q=\xe4\xbd\xa0\xe5\xa5\xbd", L"q=\x4f60\x597d", "big5", "?q=%A7A%A6n"},
+      // Unencodable character in the destination character set should be
+      // escaped. The escape sequence unescapes to be the entity name:
+      // "?q=&#20320;"
+    {"q=Chinese\xef\xbc\xa7", L"q=Chinese\xff27", "iso-8859-1",
+      "?q=Chinese%26%2365319%3B"},
+  };
+
+  for (size_t i = 0; i < ARRAYSIZE(query_cases); i++) {
+    Component out_comp;
+
+    UConvScoper conv(query_cases[i].encoding);
+    ASSERT_TRUE(!query_cases[i].encoding || conv.converter());
+    ICUCharsetConverter converter(conv.converter());
+
+    if (query_cases[i].input8) {
+      int len = static_cast<int>(strlen(query_cases[i].input8));
+      Component in_comp(0, len);
+      std::string out_str;
+
+      StdStringCanonOutput output(&out_str);
+      CanonicalizeQuery(query_cases[i].input8, in_comp, &converter, &output,
+                        &out_comp);
+      output.Complete();
+
+      EXPECT_EQ(query_cases[i].expected, out_str);
+    }
+
+    if (query_cases[i].input16) {
+      base::string16 input16(WStringToUTF16(query_cases[i].input16));
+      int len = static_cast<int>(input16.length());
+      Component in_comp(0, len);
+      std::string out_str;
+
+      StdStringCanonOutput output(&out_str);
+      CanonicalizeQuery(input16.c_str(), in_comp, &converter, &output,
+                        &out_comp);
+      output.Complete();
+
+      EXPECT_EQ(query_cases[i].expected, out_str);
+    }
+  }
+
+  // Extra test for input with embedded NULL;
+  std::string out_str;
+  StdStringCanonOutput output(&out_str);
+  Component out_comp;
+  CanonicalizeQuery("a \x00z\x01", Component(0, 5), NULL, &output, &out_comp);
+  output.Complete();
+  EXPECT_EQ("?a%20%00z%01", out_str);
+}
+
+}  // namespace
+
+}  // namespace url