public void ToSingleRegexString_ReturnsEmptyString_WhenConcatContainsNoElements()
{
var expression = new ConcatenationExpressionTest(_randomGenerator);
var result = expression.ToSingleStringBuilder().GenerateString();
Assert.AreEqual(string.Empty, result);
}
public void GetInverse_ReturnValueContainsTwoExpressions_WhenExpressionContainsTwoElements()
{
var secondExpression = Substitute.For <IExpression>();
var concatExpression = new ConcatenationExpressionTest(_randomGenerator);
concatExpression.Append(_expression).Append(secondExpression);
concatExpression.GetInverse();
secondExpression.Received(1).GetInverse();
_expression.Received(1).GetInverse();
}
public void ToSingleRegexString_ReturnsUlrike_WhenConcatExpressionContainsOneElementReturningFranziska()
{
var mock = new StringBuilderMock(ToCharacterClassList("Ulrike"));
_expression.ToStringBuilder().Returns(mock);
var concatExpression = new ConcatenationExpressionTest(_randomGenerator);
concatExpression.Append(_expression);
var result = concatExpression.ToSingleStringBuilder().GenerateString();
Assert.AreEqual("Ulrike", result);
}
public void ToSingleRegexString_ReturnsJaFran_WhenConcatExpressionContainsTwoElementReturningFranziskaAndJ()
{
var mock1 = new StringBuilderMock(ToCharacterClassList("Fran"));
var mock2 = new StringBuilderMock(ToCharacterClassList("Ja"));
var secondExpression = Substitute.For <IExpression>();
secondExpression.ToStringBuilder().Returns(mock1);
_expression.ToStringBuilder().Returns(mock2);
var concatExpression = new ConcatenationExpressionTest(_randomGenerator);
concatExpression.Append(_expression).Append(secondExpression);
var result = concatExpression.ToSingleStringBuilder().GenerateString();
Assert.AreEqual("JaFran", result);
}