public void ExpressionParsingHelpersCOPYTest()
{
string source = "abcdefghijk";
string result = "bcde";
Assert.AreEqual(result, ExpressionParsingHelpers.COPY(source, 1, 4));
}
public void ExpressionParsingHelpersRemoveSpacesTest()
{
string initialStr = "a + b - c ";
string resultStr = "a+b-c";
Assert.AreEqual(resultStr, ExpressionParsingHelpers.RemoveSpaces(initialStr));
}
public void ExpressionParsingHelpersDeleteEmptyBracketsTest()
{
string initialStr = "()a + b() - c()";
string resultStr = "a + b - c";
Assert.AreEqual(resultStr, ExpressionParsingHelpers.DeleteEmptyBrackets(initialStr));
}
public void ExpressionParsingHelpersCheckBracketBalanceTest()
{
string correctStr = "(((a + b) - c) / (2))";
string wrongStr = "(a + b) - c) / 2";
string wrongStr2 = "(((a + b) - c) / 2";
Assert.AreEqual(true, ExpressionParsingHelpers.CheckBracketBalance(correctStr));
Assert.AreEqual(false, ExpressionParsingHelpers.CheckBracketBalance(wrongStr));
Assert.AreEqual(false, ExpressionParsingHelpers.CheckBracketBalance(wrongStr2));
}
public void ExpressionParsingHelpersAddMinusOneTest()
{
string minusTwo = "-2";
Assert.AreEqual(minusTwo, ExpressionParsingHelpers.AddMinusOne(minusTwo));
string minusA = "-A + b";
string minusAResult = "(-1)*A + b";
Assert.AreEqual(minusAResult, ExpressionParsingHelpers.AddMinusOne(minusA));
}
public void ExpressionParsingHelpersGetAllSubstringIndexesTest()
{
string initialString = "sin(x) + cos(a) - 2 * sin(y)";
string substring = "sin";
List <int> expected = new List <int>
{
0, 22
};
CollectionAssert.AreEquivalent(expected, ExpressionParsingHelpers.GetAllSubstringIndexes(initialString, substring));
}
public void ExpressionParsingHelpersRemoveWrappedBracketsTest()
{
string errorMessage = "Bracket balance is not observed!";
List <string> initialExpressions = new List <string>
{
"(a + b)",
"((a + b))",
"((a + b - (c * 2)))",
"a - b",
"(a - b) + c"
};
List <string> resultExpressions = new List <string>
{
"a + b",
"a + b",
"a + b - (c * 2)",
"a - b",
"(a - b) + c"
};
string fakeExpression = "(a - b + c";
for (int i = 0; i < initialExpressions.Count; i++)
{
Assert.AreEqual(resultExpressions[i], ExpressionParsingHelpers.RemoveWrappedBrackets(initialExpressions[i]));
}
try
{
ExpressionParsingHelpers.RemoveWrappedBrackets(fakeExpression);
}
catch (Exception e)
{
Assert.AreEqual(errorMessage, e.Message);
}
}
