libcutils/tests/PropertiesTest.cpp - android-core - Git at Google

 /*
  * Copyright (C) 2014 The Android Open Source Project
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
  * You may obtain a copy of the License at
  *
  *      http://www.apache.org/licenses/LICENSE-2.0
  *
  * Unless required by applicable law or agreed to in writing, software
  * distributed under the License is distributed on an "AS IS" BASIS,
  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */

 #define LOG_TAG "Properties_test"
 #include <utils/Log.h>
 #include <gtest/gtest.h>

 #include <cutils/properties.h>
 #include <limits.h>
 #include <string>
 #include <sstream>
 #include <iostream>

 namespace android {

 #define STRINGIFY_INNER(x) #x
 #define STRINGIFY(x) STRINGIFY_INNER(x)
 #define ARRAY_SIZE(x) (sizeof(x)/sizeof((x)[0]))
 #define ASSERT_OK(x) ASSERT_EQ(0, (x))
 #define EXPECT_OK(x) EXPECT_EQ(0, (x))

 #define PROPERTY_TEST_KEY "libcutils.test.key"
 #define PROPERTY_TEST_VALUE_DEFAULT "<<<default_value>>>"

 template <typename T>
 static std::string HexString(T value) {
     std::stringstream ss;
     ss << "0x" << std::hex << std::uppercase << value;
     return ss.str();
 }

 template <typename T>
 static ::testing::AssertionResult AssertEqualHex(const char *mExpr,
         const char *nExpr,
         T m,
         T n) {
     if (m == n) {
         return ::testing::AssertionSuccess();
     }

     return ::testing::AssertionFailure()
         << mExpr << " and " << nExpr << " (expected: " << HexString(m) <<
         ", actual: " << HexString(n) << ") are not equal";
 }

 class PropertiesTest : public testing::Test {
 public:
     PropertiesTest() : mValue() {}
 protected:
     virtual void SetUp() {
         EXPECT_OK(property_set(PROPERTY_TEST_KEY, /*value*/NULL));
     }

     virtual void TearDown() {
         EXPECT_OK(property_set(PROPERTY_TEST_KEY, /*value*/NULL));
     }

     char mValue[PROPERTY_VALUE_MAX];

     template <typename T>
     static std::string ToString(T value) {
         std::stringstream ss;
         ss << value;

         return ss.str();
     }

     // Return length of property read; value is written into mValue
     int SetAndGetProperty(const char* value, const char* defaultValue = PROPERTY_TEST_VALUE_DEFAULT) {
         EXPECT_OK(property_set(PROPERTY_TEST_KEY, value)) << "value: '" << value << "'";
         return property_get(PROPERTY_TEST_KEY, mValue, defaultValue);
     }

     void ResetValue(unsigned char c = 0xFF) {
         for (size_t i = 0; i < ARRAY_SIZE(mValue); ++i) {
             mValue[i] = (char) c;
         }
     }
 };

 TEST_F(PropertiesTest, SetString) {

     // Null key -> unsuccessful set
     {
         // Null key -> fails
         EXPECT_GT(0, property_set(/*key*/NULL, PROPERTY_TEST_VALUE_DEFAULT));
     }

     // Null value -> returns default value
     {
         // Null value -> OK , and it clears the value
         EXPECT_OK(property_set(PROPERTY_TEST_KEY, /*value*/NULL));
         ResetValue();

         // Since the value is null, default value will be returned
         int len = property_get(PROPERTY_TEST_KEY, mValue, PROPERTY_TEST_VALUE_DEFAULT);
         EXPECT_EQ(strlen(PROPERTY_TEST_VALUE_DEFAULT), len);
         EXPECT_STREQ(PROPERTY_TEST_VALUE_DEFAULT, mValue);
     }

     // Trivial case => get returns what was set
     {
         int len = SetAndGetProperty("hello_world");
         EXPECT_EQ(strlen("hello_world"), len) << "hello_world key";
         EXPECT_STREQ("hello_world", mValue);
         ResetValue();
     }

     // Set to empty string => get returns default always
     {
         const char* EMPTY_STRING_DEFAULT = "EMPTY_STRING";
         int len = SetAndGetProperty("", EMPTY_STRING_DEFAULT);
         EXPECT_EQ(strlen(EMPTY_STRING_DEFAULT), len) << "empty key";
         EXPECT_STREQ(EMPTY_STRING_DEFAULT, mValue);
         ResetValue();
     }

     // Set to max length => get returns what was set
     {
         std::string maxLengthString = std::string(PROPERTY_VALUE_MAX-1, 'a');

         int len = SetAndGetProperty(maxLengthString.c_str());
         EXPECT_EQ(PROPERTY_VALUE_MAX-1, len) << "max length key";
         EXPECT_STREQ(maxLengthString.c_str(), mValue);
         ResetValue();
     }

     // Set to max length + 1 => set fails
     {
         const char* VALID_TEST_VALUE = "VALID_VALUE";
         ASSERT_OK(property_set(PROPERTY_TEST_KEY, VALID_TEST_VALUE));

         std::string oneLongerString = std::string(PROPERTY_VALUE_MAX, 'a');

         // Expect that the value set fails since it's too long
         EXPECT_GT(0, property_set(PROPERTY_TEST_KEY, oneLongerString.c_str()));
         int len = property_get(PROPERTY_TEST_KEY, mValue, PROPERTY_TEST_VALUE_DEFAULT);

         EXPECT_EQ(strlen(VALID_TEST_VALUE), len) << "set should've failed";
         EXPECT_STREQ(VALID_TEST_VALUE, mValue);
         ResetValue();
     }
 }

 TEST_F(PropertiesTest, GetString) {

     // Try to use a default value that's too long => set fails
     {
         ASSERT_OK(property_set(PROPERTY_TEST_KEY, ""));

         std::string maxLengthString = std::string(PROPERTY_VALUE_MAX-1, 'a');
         std::string oneLongerString = std::string(PROPERTY_VALUE_MAX, 'a');

         // Expect that the value is truncated since it's too long (by 1)
         int len = property_get(PROPERTY_TEST_KEY, mValue, oneLongerString.c_str());
         EXPECT_EQ(PROPERTY_VALUE_MAX-1, len);
         EXPECT_STREQ(maxLengthString.c_str(), mValue);
         ResetValue();
     }
 }

 TEST_F(PropertiesTest, GetBool) {
     /**
      * TRUE
      */
     const char *valuesTrue[] = { "1", "true", "y", "yes", "on", };
     for (size_t i = 0; i < ARRAY_SIZE(valuesTrue); ++i) {
         ASSERT_OK(property_set(PROPERTY_TEST_KEY, valuesTrue[i]));
         bool val = property_get_bool(PROPERTY_TEST_KEY, /*default_value*/false);
         EXPECT_TRUE(val) << "Property should've been TRUE for value: '" << valuesTrue[i] << "'";
     }

     /**
      * FALSE
      */
     const char *valuesFalse[] = { "0", "false", "n", "no", "off", };
     for (size_t i = 0; i < ARRAY_SIZE(valuesFalse); ++i) {
         ASSERT_OK(property_set(PROPERTY_TEST_KEY, valuesFalse[i]));
         bool val = property_get_bool(PROPERTY_TEST_KEY, /*default_value*/true);
         EXPECT_FALSE(val) << "Property shoud've been FALSE For string value: '" << valuesFalse[i] << "'";
     }

     /**
      * NEITHER
      */
     const char *valuesNeither[] = { "x0", "x1", "2", "-2", "True", "False", "garbage", "", " ",
             "+1", "  1  ", "  true", "  true  ", "  y  ", "  yes", "yes  ",
             "+0", "-0", "00", "  00  ", "  false", "false  ",
     };
     for (size_t i = 0; i < ARRAY_SIZE(valuesNeither); ++i) {
         ASSERT_OK(property_set(PROPERTY_TEST_KEY, valuesNeither[i]));

         // The default value should always be used
         bool val = property_get_bool(PROPERTY_TEST_KEY, /*default_value*/true);
         EXPECT_TRUE(val) << "Property should've been NEITHER (true) for string value: '" << valuesNeither[i] << "'";

         val = property_get_bool(PROPERTY_TEST_KEY, /*default_value*/false);
         EXPECT_FALSE(val) << "Property should've been NEITHER (false) for string value: '" << valuesNeither[i] << "'";
     }
 }

 TEST_F(PropertiesTest, GetInt64) {
     const int64_t DEFAULT_VALUE = INT64_C(0xDEADBEEFBEEFDEAD);

     const std::string longMaxString = ToString(INT64_MAX);
     const std::string longStringOverflow = longMaxString + "0";

     const std::string longMinString = ToString(INT64_MIN);
     const std::string longStringUnderflow = longMinString + "0";

     const char* setValues[] = {
         // base 10
         "1", "2", "12345", "-1", "-2", "-12345",
         // base 16
         "0xFF", "0x0FF", "0xC0FFEE",
         // base 8
         "0", "01234", "07",
         // corner cases
         "       2", "2      ", "+0", "-0", "  +0   ", longMaxString.c_str(), longMinString.c_str(),
         // failing cases
         NULL, "", " ", "    ", "hello", "     true     ", "y",
         longStringOverflow.c_str(), longStringUnderflow.c_str(),
     };

     int64_t getValues[] = {
         // base 10
         1, 2, 12345, -1, -2, -12345,
         // base 16
         0xFF, 0x0FF, 0xC0FFEE,
         // base 8
         0, 01234, 07,
         // corner cases
         2, 2, 0, 0, 0, INT64_MAX, INT64_MIN,
         // failing cases
         DEFAULT_VALUE, DEFAULT_VALUE, DEFAULT_VALUE, DEFAULT_VALUE, DEFAULT_VALUE, DEFAULT_VALUE, DEFAULT_VALUE,
         DEFAULT_VALUE, DEFAULT_VALUE,
     };

     ASSERT_EQ(ARRAY_SIZE(setValues), ARRAY_SIZE(getValues));

     for (size_t i = 0; i < ARRAY_SIZE(setValues); ++i) {
         ASSERT_OK(property_set(PROPERTY_TEST_KEY, setValues[i]));

         int64_t val = property_get_int64(PROPERTY_TEST_KEY, DEFAULT_VALUE);
         EXPECT_PRED_FORMAT2(AssertEqualHex, getValues[i], val) << "Property was set to '" << setValues[i] << "'";
     }
 }

 TEST_F(PropertiesTest, GetInt32) {
     const int32_t DEFAULT_VALUE = INT32_C(0xDEADBEEF);

     const std::string intMaxString = ToString(INT32_MAX);
     const std::string intStringOverflow = intMaxString + "0";

     const std::string intMinString = ToString(INT32_MIN);
     const std::string intStringUnderflow = intMinString + "0";

     const char* setValues[] = {
         // base 10
         "1", "2", "12345", "-1", "-2", "-12345",
         // base 16
         "0xFF", "0x0FF", "0xC0FFEE", "0Xf00",
         // base 8
         "0", "01234", "07",
         // corner cases
         "       2", "2      ", "+0", "-0", "  +0   ", intMaxString.c_str(), intMinString.c_str(),
         // failing cases
         NULL, "", " ", "    ", "hello", "     true     ", "y",
         intStringOverflow.c_str(), intStringUnderflow.c_str(),
     };

     int32_t getValues[] = {
         // base 10
         1, 2, 12345, -1, -2, -12345,
         // base 16
         0xFF, 0x0FF, 0xC0FFEE, 0Xf00,
         // base 8
         0, 01234, 07,
         // corner cases
         2, 2, 0, 0, 0, INT32_MAX, INT32_MIN,
         // failing cases
         DEFAULT_VALUE, DEFAULT_VALUE, DEFAULT_VALUE, DEFAULT_VALUE, DEFAULT_VALUE, DEFAULT_VALUE, DEFAULT_VALUE,
         DEFAULT_VALUE, DEFAULT_VALUE,
     };

     ASSERT_EQ(ARRAY_SIZE(setValues), ARRAY_SIZE(getValues));

     for (size_t i = 0; i < ARRAY_SIZE(setValues); ++i) {
         ASSERT_OK(property_set(PROPERTY_TEST_KEY, setValues[i]));

         int32_t val = property_get_int32(PROPERTY_TEST_KEY, DEFAULT_VALUE);
         EXPECT_PRED_FORMAT2(AssertEqualHex, getValues[i], val) << "Property was set to '" << setValues[i] << "'";
     }
 }

 } // namespace android
	/*
	* Copyright (C) 2014 The Android Open Source Project
	*
	* Licensed under the Apache License, Version 2.0 (the "License");
	* you may not use this file except in compliance with the License.
	* You may obtain a copy of the License at
	*
	* http://www.apache.org/licenses/LICENSE-2.0
	*
	* Unless required by applicable law or agreed to in writing, software
	* distributed under the License is distributed on an "AS IS" BASIS,
	* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
	* See the License for the specific language governing permissions and
	* limitations under the License.
	*/

	#define LOG_TAG "Properties_test"
	#include <utils/Log.h>
	#include <gtest/gtest.h>

	#include <cutils/properties.h>
	#include <limits.h>
	#include <string>
	#include <sstream>
	#include <iostream>

	namespace android {

	#define STRINGIFY_INNER(x) #x
	#define STRINGIFY(x) STRINGIFY_INNER(x)
	#define ARRAY_SIZE(x) (sizeof(x)/sizeof((x)[0]))
	#define ASSERT_OK(x) ASSERT_EQ(0, (x))
	#define EXPECT_OK(x) EXPECT_EQ(0, (x))

	#define PROPERTY_TEST_KEY "libcutils.test.key"
	#define PROPERTY_TEST_VALUE_DEFAULT "<<<default_value>>>"

	template <typename T>
	static std::string HexString(T value) {
	std::stringstream ss;
	ss << "0x" << std::hex << std::uppercase << value;
	return ss.str();
	}

	template <typename T>
	static ::testing::AssertionResult AssertEqualHex(const char *mExpr,
	const char *nExpr,
	T m,
	T n) {
	if (m == n) {
	return ::testing::AssertionSuccess();
	}

	return ::testing::AssertionFailure()
	<< mExpr << " and " << nExpr << " (expected: " << HexString(m) <<
	", actual: " << HexString(n) << ") are not equal";
	}

	class PropertiesTest : public testing::Test {
	public:
	PropertiesTest() : mValue() {}
	protected:
	virtual void SetUp() {
	EXPECT_OK(property_set(PROPERTY_TEST_KEY, /value/NULL));
	}

	virtual void TearDown() {
	EXPECT_OK(property_set(PROPERTY_TEST_KEY, /value/NULL));
	}

	char mValue[PROPERTY_VALUE_MAX];

	template <typename T>
	static std::string ToString(T value) {
	std::stringstream ss;
	ss << value;

	return ss.str();
	}

	// Return length of property read; value is written into mValue
	int SetAndGetProperty(const char* value, const char* defaultValue = PROPERTY_TEST_VALUE_DEFAULT) {
	EXPECT_OK(property_set(PROPERTY_TEST_KEY, value)) << "value: '" << value << "'";
	return property_get(PROPERTY_TEST_KEY, mValue, defaultValue);
	}

	void ResetValue(unsigned char c = 0xFF) {
	for (size_t i = 0; i < ARRAY_SIZE(mValue); ++i) {
	mValue[i] = (char) c;
	}
	}
	};

	TEST_F(PropertiesTest, SetString) {

	// Null key -> unsuccessful set
	{
	// Null key -> fails
	EXPECT_GT(0, property_set(/key/NULL, PROPERTY_TEST_VALUE_DEFAULT));
	}

	// Null value -> returns default value
	{
	// Null value -> OK , and it clears the value
	EXPECT_OK(property_set(PROPERTY_TEST_KEY, /value/NULL));
	ResetValue();

	// Since the value is null, default value will be returned
	int len = property_get(PROPERTY_TEST_KEY, mValue, PROPERTY_TEST_VALUE_DEFAULT);
	EXPECT_EQ(strlen(PROPERTY_TEST_VALUE_DEFAULT), len);
	EXPECT_STREQ(PROPERTY_TEST_VALUE_DEFAULT, mValue);
	}

	// Trivial case => get returns what was set
	{
	int len = SetAndGetProperty("hello_world");
	EXPECT_EQ(strlen("hello_world"), len) << "hello_world key";
	EXPECT_STREQ("hello_world", mValue);
	ResetValue();
	}

	// Set to empty string => get returns default always
	{
	const char* EMPTY_STRING_DEFAULT = "EMPTY_STRING";
	int len = SetAndGetProperty("", EMPTY_STRING_DEFAULT);
	EXPECT_EQ(strlen(EMPTY_STRING_DEFAULT), len) << "empty key";
	EXPECT_STREQ(EMPTY_STRING_DEFAULT, mValue);
	ResetValue();
	}

	// Set to max length => get returns what was set
	{
	std::string maxLengthString = std::string(PROPERTY_VALUE_MAX-1, 'a');

	int len = SetAndGetProperty(maxLengthString.c_str());
	EXPECT_EQ(PROPERTY_VALUE_MAX-1, len) << "max length key";
	EXPECT_STREQ(maxLengthString.c_str(), mValue);
	ResetValue();
	}

	// Set to max length + 1 => set fails
	{
	const char* VALID_TEST_VALUE = "VALID_VALUE";
	ASSERT_OK(property_set(PROPERTY_TEST_KEY, VALID_TEST_VALUE));

	std::string oneLongerString = std::string(PROPERTY_VALUE_MAX, 'a');

	// Expect that the value set fails since it's too long
	EXPECT_GT(0, property_set(PROPERTY_TEST_KEY, oneLongerString.c_str()));
	int len = property_get(PROPERTY_TEST_KEY, mValue, PROPERTY_TEST_VALUE_DEFAULT);

	EXPECT_EQ(strlen(VALID_TEST_VALUE), len) << "set should've failed";
	EXPECT_STREQ(VALID_TEST_VALUE, mValue);
	ResetValue();
	}
	}

	TEST_F(PropertiesTest, GetString) {

	// Try to use a default value that's too long => set fails
	{
	ASSERT_OK(property_set(PROPERTY_TEST_KEY, ""));

	std::string maxLengthString = std::string(PROPERTY_VALUE_MAX-1, 'a');
	std::string oneLongerString = std::string(PROPERTY_VALUE_MAX, 'a');

	// Expect that the value is truncated since it's too long (by 1)
	int len = property_get(PROPERTY_TEST_KEY, mValue, oneLongerString.c_str());
	EXPECT_EQ(PROPERTY_VALUE_MAX-1, len);
	EXPECT_STREQ(maxLengthString.c_str(), mValue);
	ResetValue();
	}
	}

	TEST_F(PropertiesTest, GetBool) {
	/**
	* TRUE
	*/
	const char *valuesTrue[] = { "1", "true", "y", "yes", "on", };
	for (size_t i = 0; i < ARRAY_SIZE(valuesTrue); ++i) {
	ASSERT_OK(property_set(PROPERTY_TEST_KEY, valuesTrue[i]));
	bool val = property_get_bool(PROPERTY_TEST_KEY, /default_value/false);
	EXPECT_TRUE(val) << "Property should've been TRUE for value: '" << valuesTrue[i] << "'";
	}

	/**
	* FALSE
	*/
	const char *valuesFalse[] = { "0", "false", "n", "no", "off", };
	for (size_t i = 0; i < ARRAY_SIZE(valuesFalse); ++i) {
	ASSERT_OK(property_set(PROPERTY_TEST_KEY, valuesFalse[i]));
	bool val = property_get_bool(PROPERTY_TEST_KEY, /default_value/true);
	EXPECT_FALSE(val) << "Property shoud've been FALSE For string value: '" << valuesFalse[i] << "'";
	}

	/**
	* NEITHER
	*/
	const char *valuesNeither[] = { "x0", "x1", "2", "-2", "True", "False", "garbage", "", " ",
	"+1", " 1 ", " true", " true ", " y ", " yes", "yes ",
	"+0", "-0", "00", " 00 ", " false", "false ",
	};
	for (size_t i = 0; i < ARRAY_SIZE(valuesNeither); ++i) {
	ASSERT_OK(property_set(PROPERTY_TEST_KEY, valuesNeither[i]));

	// The default value should always be used
	bool val = property_get_bool(PROPERTY_TEST_KEY, /default_value/true);
	EXPECT_TRUE(val) << "Property should've been NEITHER (true) for string value: '" << valuesNeither[i] << "'";

	val = property_get_bool(PROPERTY_TEST_KEY, /default_value/false);
	EXPECT_FALSE(val) << "Property should've been NEITHER (false) for string value: '" << valuesNeither[i] << "'";
	}
	}

	TEST_F(PropertiesTest, GetInt64) {
	const int64_t DEFAULT_VALUE = INT64_C(0xDEADBEEFBEEFDEAD);

	const std::string longMaxString = ToString(INT64_MAX);
	const std::string longStringOverflow = longMaxString + "0";

	const std::string longMinString = ToString(INT64_MIN);
	const std::string longStringUnderflow = longMinString + "0";

	const char* setValues[] = {
	// base 10
	"1", "2", "12345", "-1", "-2", "-12345",
	// base 16
	"0xFF", "0x0FF", "0xC0FFEE",
	// base 8
	"0", "01234", "07",
	// corner cases
	" 2", "2 ", "+0", "-0", " +0 ", longMaxString.c_str(), longMinString.c_str(),
	// failing cases
	NULL, "", " ", " ", "hello", " true ", "y",
	longStringOverflow.c_str(), longStringUnderflow.c_str(),
	};

	int64_t getValues[] = {
	// base 10
	1, 2, 12345, -1, -2, -12345,
	// base 16
	0xFF, 0x0FF, 0xC0FFEE,
	// base 8
	0, 01234, 07,
	// corner cases
	2, 2, 0, 0, 0, INT64_MAX, INT64_MIN,
	// failing cases
	DEFAULT_VALUE, DEFAULT_VALUE, DEFAULT_VALUE, DEFAULT_VALUE, DEFAULT_VALUE, DEFAULT_VALUE, DEFAULT_VALUE,
	DEFAULT_VALUE, DEFAULT_VALUE,
	};

	ASSERT_EQ(ARRAY_SIZE(setValues), ARRAY_SIZE(getValues));

	for (size_t i = 0; i < ARRAY_SIZE(setValues); ++i) {
	ASSERT_OK(property_set(PROPERTY_TEST_KEY, setValues[i]));

	int64_t val = property_get_int64(PROPERTY_TEST_KEY, DEFAULT_VALUE);
	EXPECT_PRED_FORMAT2(AssertEqualHex, getValues[i], val) << "Property was set to '" << setValues[i] << "'";
	}
	}

	TEST_F(PropertiesTest, GetInt32) {
	const int32_t DEFAULT_VALUE = INT32_C(0xDEADBEEF);

	const std::string intMaxString = ToString(INT32_MAX);
	const std::string intStringOverflow = intMaxString + "0";

	const std::string intMinString = ToString(INT32_MIN);
	const std::string intStringUnderflow = intMinString + "0";

	const char* setValues[] = {
	// base 10
	"1", "2", "12345", "-1", "-2", "-12345",
	// base 16
	"0xFF", "0x0FF", "0xC0FFEE", "0Xf00",
	// base 8
	"0", "01234", "07",
	// corner cases
	" 2", "2 ", "+0", "-0", " +0 ", intMaxString.c_str(), intMinString.c_str(),
	// failing cases
	NULL, "", " ", " ", "hello", " true ", "y",
	intStringOverflow.c_str(), intStringUnderflow.c_str(),
	};

	int32_t getValues[] = {
	// base 10
	1, 2, 12345, -1, -2, -12345,
	// base 16
	0xFF, 0x0FF, 0xC0FFEE, 0Xf00,
	// base 8
	0, 01234, 07,
	// corner cases
	2, 2, 0, 0, 0, INT32_MAX, INT32_MIN,
	// failing cases
	DEFAULT_VALUE, DEFAULT_VALUE, DEFAULT_VALUE, DEFAULT_VALUE, DEFAULT_VALUE, DEFAULT_VALUE, DEFAULT_VALUE,
	DEFAULT_VALUE, DEFAULT_VALUE,
	};

	ASSERT_EQ(ARRAY_SIZE(setValues), ARRAY_SIZE(getValues));

	for (size_t i = 0; i < ARRAY_SIZE(setValues); ++i) {
	ASSERT_OK(property_set(PROPERTY_TEST_KEY, setValues[i]));

	int32_t val = property_get_int32(PROPERTY_TEST_KEY, DEFAULT_VALUE);
	EXPECT_PRED_FORMAT2(AssertEqualHex, getValues[i], val) << "Property was set to '" << setValues[i] << "'";
	}
	}

	} // namespace android