ppapi/tests/test_var.cc

   1 // Copyright (c) 2011 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #include "ppapi/tests/test_var.h"
   6
   7 #include <string.h>
   8
   9 #include <limits>
  10
  11 #include "ppapi/c/pp_var.h"
  12 #include "ppapi/c/ppb_var.h"
  13 #include "ppapi/cpp/instance.h"
  14 #include "ppapi/cpp/module.h"
  15 #include "ppapi/cpp/var.h"
  16 #include "ppapi/tests/testing_instance.h"
  17
  18 namespace {
  19
  20 uint32_t kInvalidLength = static_cast<uint32_t>(-1);
  21
  22 }  // namespace
  23
  24 REGISTER_TEST_CASE(Var);
  25
  26 bool TestVar::Init() {
  27   var_interface_ = static_cast<const PPB_Var*>(
  28       pp::Module::Get()->GetBrowserInterface(PPB_VAR_INTERFACE));
  29   return var_interface_ && CheckTestingInterface();
  30 }
  31
  32 void TestVar::RunTests(const std::string& filter) {
  33   RUN_TEST(BasicString, filter);
  34   RUN_TEST(InvalidAndEmpty, filter);
  35   RUN_TEST(InvalidUtf8, filter);
  36   RUN_TEST(NullInputInUtf8Conversion, filter);
  37   RUN_TEST(ValidUtf8, filter);
  38   RUN_TEST(Utf8WithEmbeddedNulls, filter);
  39   RUN_TEST(VarToUtf8ForWrongType, filter);
  40 }
  41
  42 std::string TestVar::TestBasicString() {
  43   uint32_t before_object = testing_interface_->GetLiveObjectsForInstance(
  44       instance_->pp_instance());
  45   {
  46     const char kStr[] = "Hello";
  47     const uint32_t kStrLen(sizeof(kStr) - 1);
  48     PP_Var str = var_interface_->VarFromUtf8(kStr, kStrLen);
  49     ASSERT_EQ(PP_VARTYPE_STRING, str.type);
  50
  51     // Reading back the string should work.
  52     uint32_t len = 0;
  53     const char* result = var_interface_->VarToUtf8(str, &len);
  54     ASSERT_EQ(kStrLen, len);
  55     ASSERT_EQ(0, strncmp(kStr, result, kStrLen));
  56
  57     // Destroy the string, readback should now fail.
  58     var_interface_->Release(str);
  59     result = var_interface_->VarToUtf8(str, &len);
  60     ASSERT_EQ(0, len);
  61     ASSERT_EQ(NULL, result);
  62   }
  63
  64   // Make sure we can assign a C++ object to itself and it stays alive.
  65   {
  66     pp::Var a("test");
  67     a = a;
  68     ASSERT_TRUE(a.AsString() == "test");
  69   }
  70
  71   // Make sure nothing leaked.
  72   ASSERT_TRUE(testing_interface_->GetLiveObjectsForInstance(
  73       instance_->pp_instance()) == before_object);
  74
  75   PASS();
  76 }
  77
  78 std::string TestVar::TestInvalidAndEmpty() {
  79   PP_Var invalid_string;
  80   invalid_string.type = PP_VARTYPE_STRING;
  81   invalid_string.value.as_id = 31415926;
  82
  83   // Invalid strings should give NULL as the return value.
  84   uint32_t len = std::numeric_limits<uint32_t>::max();
  85   const char* result = var_interface_->VarToUtf8(invalid_string, &len);
  86   ASSERT_EQ(0, len);
  87   ASSERT_EQ(NULL, result);
  88
  89   // Same with vars that are not strings.
  90   len = std::numeric_limits<uint32_t>::max();
  91   pp::Var int_var(42);
  92   result = var_interface_->VarToUtf8(int_var.pp_var(), &len);
  93   ASSERT_EQ(0, len);
  94   ASSERT_EQ(NULL, result);
  95
  96   // Empty strings should return non-NULL.
  97   pp::Var empty_string("");
  98   len = std::numeric_limits<uint32_t>::max();
  99   result = var_interface_->VarToUtf8(empty_string.pp_var(), &len);
 100   ASSERT_EQ(0, len);
 101   ASSERT_NE(NULL, result);
 102
 103   PASS();
 104 }
 105
 106 std::string TestVar::TestInvalidUtf8() {
 107   // utf8じゃない (japanese for "is not utf8") in shift-jis encoding.
 108   static const char kSjisString[] = "utf8\x82\xb6\x82\xe1\x82\xc8\x82\xa2";
 109   pp::Var sjis(kSjisString);
 110   if (!sjis.is_null())
 111     return "Non-UTF8 string was permitted erroneously.";
 112
 113   PASS();
 114 }
 115
 116 std::string TestVar::TestNullInputInUtf8Conversion() {
 117   // This test talks directly to the C interface to access edge cases that
 118   // cannot be exercised via the C++ interface.
 119   PP_Var converted_string;
 120
 121   // 0-length string should not dereference input string, and should produce
 122   // an empty string.
 123   converted_string = var_interface_->VarFromUtf8(NULL, 0);
 124   if (converted_string.type != PP_VARTYPE_STRING) {
 125     return "Expected 0 length to return empty string.";
 126   }
 127
 128   // Now convert it back.
 129   uint32_t length = kInvalidLength;
 130   const char* result = NULL;
 131   result = var_interface_->VarToUtf8(converted_string, &length);
 132   if (length != 0) {
 133     return "Expected 0 length string on conversion.";
 134   }
 135   if (result == NULL) {
 136     return "Expected a non-null result for 0-lengthed string from VarToUtf8.";
 137   }
 138   var_interface_->Release(converted_string);
 139
 140   // Should not crash, and make an empty string.
 141   const char* null_string = NULL;
 142   pp::Var null_var(null_string);
 143   if (!null_var.is_string() || null_var.AsString() != "") {
 144     return "Expected NULL input to make an empty string Var.";
 145   }
 146
 147   PASS();
 148 }
 149
 150 std::string TestVar::TestValidUtf8() {
 151   // From UTF8 string -> PP_Var.
 152   // Chinese for "I am utf8."
 153   static const char kValidUtf8[] = "\xe6\x88\x91\xe6\x98\xafutf8.";
 154   pp::Var converted_string(kValidUtf8);
 155
 156   if (converted_string.is_null())
 157     return "Unable to convert valid utf8 to var.";
 158
 159   // Since we're already here, test PP_Var back to UTF8 string.
 160   std::string returned_string = converted_string.AsString();
 161
 162   // We need to check against 1 less than sizeof because the resulting string
 163   // is technically not NULL terminated by API design.
 164   if (returned_string.size() != sizeof(kValidUtf8) - 1) {
 165     return "Unable to convert utf8 string back from var.";
 166   }
 167   if (returned_string != kValidUtf8) {
 168     return "String mismatches on conversion back from PP_Var.";
 169   }
 170
 171   PASS();
 172 }
 173
 174 std::string TestVar::TestUtf8WithEmbeddedNulls() {
 175   // From UTF8 string with embedded nulls -> PP_Var.
 176   // Chinese for "also utf8."
 177   static const char kUtf8WithEmbededNull[] = "\xe6\xb9\x9f\xe6\x98\xaf\0utf8.";
 178   std::string orig_string(kUtf8WithEmbededNull,
 179                           sizeof(kUtf8WithEmbededNull) -1);
 180   pp::Var converted_string(orig_string);
 181
 182   if (converted_string.is_null())
 183     return "Unable to convert utf8 with embedded nulls to var.";
 184
 185   // Since we're already here, test PP_Var back to UTF8 string.
 186   std::string returned_string = converted_string.AsString();
 187
 188   if (returned_string.size() != orig_string.size()) {
 189     return "Unable to convert utf8 with embedded nulls back from var.";
 190   }
 191   if (returned_string != orig_string) {
 192     return "String mismatches on conversion back from PP_Var.";
 193   }
 194
 195   PASS();
 196 }
 197
 198 std::string TestVar::TestVarToUtf8ForWrongType() {
 199   uint32_t length = kInvalidLength;
 200   const char* result = NULL;
 201   result = var_interface_->VarToUtf8(PP_MakeUndefined(), &length);
 202   if (length != 0) {
 203     return "Expected 0 on string conversion from Void var.";
 204   }
 205   if (result != NULL) {
 206     return "Expected NULL on string conversion from Void var.";
 207   }
 208
 209   length = kInvalidLength;
 210   result = NULL;
 211   result = var_interface_->VarToUtf8(PP_MakeNull(), &length);
 212   if (length != 0) {
 213     return "Expected 0 on string conversion from Null var.";
 214   }
 215   if (result != NULL) {
 216     return "Expected NULL on string conversion from Null var.";
 217   }
 218
 219   length = kInvalidLength;
 220   result = NULL;
 221   result = var_interface_->VarToUtf8(PP_MakeBool(PP_TRUE), &length);
 222   if (length != 0) {
 223     return "Expected 0 on string conversion from Bool var.";
 224   }
 225   if (result != NULL) {
 226     return "Expected NULL on string conversion from Bool var.";
 227   }
 228
 229   length = kInvalidLength;
 230   result = NULL;
 231   result = var_interface_->VarToUtf8(PP_MakeInt32(1), &length);
 232   if (length != 0) {
 233     return "Expected 0 on string conversion from Int32 var.";
 234   }
 235   if (result != NULL) {
 236     return "Expected NULL on string conversion from Int32 var.";
 237   }
 238
 239   length = kInvalidLength;
 240   result = NULL;
 241   result = var_interface_->VarToUtf8(PP_MakeDouble(1.0), &length);
 242   if (length != 0) {
 243     return "Expected 0 on string conversion from Double var.";
 244   }
 245   if (result != NULL) {
 246     return "Expected NULL on string conversion from Double var.";
 247   }
 248
 249   PASS();
 250 }
 251