intl/gtest/TestEncoding.cpp

   1 /* Any copyright is dedicated to the Public Domain.
   2  * http://creativecommons.org/publicdomain/zero/1.0/ */
   3
   4 #include "gtest/gtest.h"
   5
   6 #include "mozilla/Encoding.h"
   7 #include <type_traits>
   8
   9 #define ENCODING_TEST(name) TEST(EncodingTest, name)
  10
  11 using namespace mozilla;
  12
  13 static_assert(std::is_standard_layout<NotNull<const Encoding*>>::value,
  14               "NotNull<const Encoding*> must be a standard layout type.");
  15
  16 // These tests mainly test that the C++ interface seems to
  17 // reach the Rust code. More thorough testing of the back
  18 // end is done in Rust.
  19
  20 ENCODING_TEST(ForLabel) {
  21   nsAutoCString label("  uTf-8   ");
  22   ASSERT_EQ(Encoding::ForLabel(label), UTF_8_ENCODING);
  23   label.AssignLiteral("   cseucpkdfmTjapanese  ");
  24   ASSERT_EQ(Encoding::ForLabel(label), EUC_JP_ENCODING);
  25 }
  26
  27 ENCODING_TEST(ForBOM) {
  28   nsAutoCString data("\xEF\xBB\xBF\x61");
  29   const Encoding* encoding;
  30   size_t bomLength;
  31   std::tie(encoding, bomLength) = Encoding::ForBOM(data);
  32   ASSERT_EQ(encoding, UTF_8_ENCODING);
  33   ASSERT_EQ(bomLength, 3U);
  34   data.AssignLiteral("\xFF\xFE");
  35   std::tie(encoding, bomLength) = Encoding::ForBOM(data);
  36   ASSERT_EQ(encoding, UTF_16LE_ENCODING);
  37   ASSERT_EQ(bomLength, 2U);
  38   data.AssignLiteral("\xFE\xFF");
  39   std::tie(encoding, bomLength) = Encoding::ForBOM(data);
  40   ASSERT_EQ(encoding, UTF_16BE_ENCODING);
  41   ASSERT_EQ(bomLength, 2U);
  42   data.AssignLiteral("\xEF\xBB");
  43   std::tie(encoding, bomLength) = Encoding::ForBOM(data);
  44   ASSERT_EQ(encoding, nullptr);
  45   ASSERT_EQ(bomLength, 0U);
  46 }
  47
  48 ENCODING_TEST(Name) {
  49   nsAutoCString name;
  50   UTF_8_ENCODING->Name(name);
  51   ASSERT_TRUE(name.EqualsLiteral("UTF-8"));
  52   GBK_ENCODING->Name(name);
  53   ASSERT_TRUE(name.EqualsLiteral("GBK"));
  54 }
  55
  56 ENCODING_TEST(CanEncodeEverything) {
  57   ASSERT_TRUE(UTF_8_ENCODING->CanEncodeEverything());
  58   ASSERT_FALSE(GB18030_ENCODING->CanEncodeEverything());
  59 }
  60
  61 ENCODING_TEST(IsAsciiCompatible) {
  62   ASSERT_TRUE(UTF_8_ENCODING->IsAsciiCompatible());
  63   ASSERT_FALSE(ISO_2022_JP_ENCODING->IsAsciiCompatible());
  64 }