public void Expand_ReturnsListContaining3ElementsOfLength4_WhenOneExpandableExpressionWith3PossibleSubexpressionsIsContained()
{
var mockA = new StringBuilderMock(ToCharacterClassList("a"));
var mock1 = new StringBuilderMock(ToCharacterClassList("1"));
var mock2 = new StringBuilderMock(ToCharacterClassList("2"));
var mock3 = new StringBuilderMock(ToCharacterClassList("3"));
var simpleExpression = Substitute.For <IExpression>();
simpleExpression.RepeatRange = new IntegerInterval(1);
simpleExpression.Expand().Returns(new List <IStringBuilder> {
mockA
});
var expandableExpression = Substitute.For <IExpression>();
expandableExpression.RepeatRange = new IntegerInterval(1);
expandableExpression.Expand().Returns(new List <IStringBuilder> {
mock1, mock2, mock3
});
var concat = new ConcatenationExpression(_random);
concat.SetExpansionLength(4);
concat.Append(simpleExpression).Append(expandableExpression).Append(simpleExpression).Append(simpleExpression);
var result = concat.Expand();
Assert.AreEqual(3, result.Count);
Assert.AreEqual("a1aa", result[0].GenerateString());
Assert.AreEqual("a2aa", result[1].GenerateString());
Assert.AreEqual("a3aa", result[2].GenerateString());
}
public void Expand_DoesNotChangeRepeatRangeValue_WhenCalled()
{
var clone = Substitute.For <IExpression>();
clone.Expand().Returns(new List <IStringBuilder> {
new StringBuilderMock(new List <CharacterClassExpression>())
});
var expression = Substitute.For <IExpression>();
expression.Clone().Returns(clone);
expression.RepeatRange = new IntegerInterval();
expression.RepeatRange.TrySetValue(1, 3);
var concat = new ConcatenationExpression(_random);
concat.Append(expression);
concat.Expand();
Assert.AreEqual(1, expression.RepeatRange.Start);
Assert.AreEqual(3, expression.RepeatRange.End);
}
public void Expand_ReturnsListContainingTwoElements_WhenSingleNotExpandableExpressionWithRepeatRangeFrom1To3IsContainedAndMaxExpansionLengthIs2()
{
var clone = Substitute.For <IExpression>();
clone.Expand().Returns(new List <IStringBuilder> {
new StringBuilderMock(new List <CharacterClassExpression>())
});
clone.ExpansionLength.Returns(2);
var expression = Substitute.For <IExpression>();
expression.Clone().Returns(clone);
expression.RepeatRange = new IntegerInterval();
expression.RepeatRange.TrySetValue(1, 3);
expression.ExpansionLength.Returns(2);
var concat = new ConcatenationExpression(_random);
concat.Append(expression);
concat.SetExpansionLength(2);
var result = concat.Expand();
Assert.AreEqual(2, result.Count);
}