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// Licensed to the .NET Foundation under one or more agreements.
// The .NET Foundation licenses this file to you under the MIT license.
// See the LICENSE file in the project root for more information.
using System;
using System.Globalization;
/// <summary>
/// System.Globalization.StringInfo.GetNextTestElement(string,int32)
/// </summary>
public class StringInfoGetNextTextElement2
{
private const int c_MINI_STRING_LENGTH = 8;
private const int c_MAX_STRING_LENGTH = 256;
#region Public Methods
public bool RunTests()
{
bool retVal = true;
TestLibrary.TestFramework.LogInformation("[Positive]");
retVal = PosTest1() && retVal;
retVal = PosTest2() && retVal;
retVal = PosTest3() && retVal;
retVal = PosTest4() && retVal;
TestLibrary.TestFramework.LogInformation("[Negative]");
retVal = NegTest1() && retVal;
retVal = NegTest2() && retVal;
retVal = NegTest3() && retVal;
return retVal;
}
#region Positive Test Cases
public bool PosTest1()
{
bool retVal = true;
TestLibrary.TestFramework.BeginScenario("PosTest1: Get the text element from a random index in a string");
try
{
string str = TestLibrary.Generator.GetString(-55, true, c_MINI_STRING_LENGTH, c_MAX_STRING_LENGTH);
int index = this.GetInt32(8, str.Length);
string result = StringInfo.GetNextTextElement(str, index);
if (result != str[index].ToString())
{
TestLibrary.TestFramework.LogError("001", "The result is not the value as expected,the result is: " + result);
retVal = false;
}
}
catch (Exception e)
{
TestLibrary.TestFramework.LogError("002", "Unexpected exception: " + e);
retVal = false;
}
return retVal;
}
public bool PosTest2()
{
bool retVal = true;
TestLibrary.TestFramework.BeginScenario("PosTest2: The first element is a surrogate pair");
try
{
string str = "\uDBFF\uDFFF";
string result = StringInfo.GetNextTextElement("ef45-;\uDBFF\uDFFFabcde", 6);
if (result.Length != 2)
{
TestLibrary.TestFramework.LogError("003", "The result is not the value as expected");
retVal = false;
}
if (result != str)
{
TestLibrary.TestFramework.LogError("004", "The result is not the value as expected,the result is: " + result);
retVal = false;
}
}
catch (Exception e)
{
TestLibrary.TestFramework.LogError("005", "Unexpected exception: " + e);
retVal = false;
}
return retVal;
}
public bool PosTest3()
{
bool retVal = true;
TestLibrary.TestFramework.BeginScenario("PosTest3: The element is a combining character");
try
{
string str = "a\u20D1";
string result = StringInfo.GetNextTextElement("13229^a\u20D1abcde", 6);
if (result != str)
{
TestLibrary.TestFramework.LogError("006", "The result is not the value as expected,the result is: " + result);
retVal = false;
}
}
catch (Exception e)
{
TestLibrary.TestFramework.LogError("007", "Unexpected exception: " + e);
retVal = false;
}
return retVal;
}
public bool PosTest4()
{
bool retVal = true;
TestLibrary.TestFramework.BeginScenario("PosTest4: The element is a combination of base character and several combining characters");
try
{
string str = "z\uFE22\u20D1\u20EB";
string result = StringInfo.GetNextTextElement("az\uFE22\u20D1\u20EBabcde", 1);
if (result.Length != 4)
{
TestLibrary.TestFramework.LogError("008", "The result is not the value as expected,length is: " + result.Length);
retVal = false;
}
if (result != str)
{
TestLibrary.TestFramework.LogError("009", "The result is not the value as expected,the result is: " + result);
retVal = false;
}
}
catch (Exception e)
{
TestLibrary.TestFramework.LogError("010", "Unexpected exception: " + e);
retVal = false;
}
return retVal;
}
#endregion
#region Nagetive Test Cases
public bool NegTest1()
{
bool retVal = true;
TestLibrary.TestFramework.BeginScenario("NegTest1: The string is a null reference");
try
{
string str = null;
string result = StringInfo.GetNextTextElement(str, 0);
TestLibrary.TestFramework.LogError("101", "The ArgumentNullException was not thrown as expected");
retVal = false;
}
catch (ArgumentNullException)
{
}
catch (Exception e)
{
TestLibrary.TestFramework.LogError("102", "Unexpected exception: " + e);
TestLibrary.TestFramework.LogInformation(e.StackTrace);
retVal = false;
}
return retVal;
}
public bool NegTest2()
{
bool retVal = true;
TestLibrary.TestFramework.BeginScenario("NegTest2: The index is out of the range of the string");
try
{
string str = "abc";
string result = StringInfo.GetNextTextElement(str, -4);
TestLibrary.TestFramework.LogError("103", "The ArgumentOutOfRangeException was not thrown as expected");
retVal = false;
}
catch (ArgumentOutOfRangeException)
{
}
catch (Exception e)
{
TestLibrary.TestFramework.LogError("104", "Unexpected exception: " + e);
TestLibrary.TestFramework.LogInformation(e.StackTrace);
retVal = false;
}
return retVal;
}
public bool NegTest3()
{
bool retVal = true;
TestLibrary.TestFramework.BeginScenario("NegTest3: The index is a negative number");
try
{
string str = "df8%^dk";
string result = StringInfo.GetNextTextElement(str, -1);
TestLibrary.TestFramework.LogError("105", "The ArgumentOutOfRangeException was not thrown as expected");
retVal = false;
}
catch (ArgumentOutOfRangeException)
{
}
catch (Exception e)
{
TestLibrary.TestFramework.LogError("106", "Unexpected exception: " + e);
TestLibrary.TestFramework.LogInformation(e.StackTrace);
retVal = false;
}
return retVal;
}
#endregion
#endregion
public static int Main()
{
StringInfoGetNextTextElement2 test = new StringInfoGetNextTextElement2();
TestLibrary.TestFramework.BeginTestCase("StringInfoGetNextTextElement2");
if (test.RunTests())
{
TestLibrary.TestFramework.EndTestCase();
TestLibrary.TestFramework.LogInformation("PASS");
return 100;
}
else
{
TestLibrary.TestFramework.EndTestCase();
TestLibrary.TestFramework.LogInformation("FAIL");
return 0;
}
}
private Int32 GetInt32(Int32 minValue, Int32 maxValue)
{
try
{
if (minValue == maxValue)
{
return minValue;
}
if (minValue < maxValue)
{
return minValue + TestLibrary.Generator.GetInt32(-55) % (maxValue - minValue);
}
}
catch
{
throw;
}
return minValue;
}
}
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