public void NullGroups_DoentCallRenderer()
{
var renderer = new Mock <IExpressionsRenderer>();
var searcher = new Mock <IExpressionSearcher>();
searcher.Setup(x => x.SearchGroups(It.IsAny <string>()))
.Returns((IEnumerable <VariablesExpression>)null);
var former = new CanonicalFormulaFormer(searcher.Object, renderer.Object);
Assert.Throws <InvalidFormulaException>(() => former.Transform(string.Empty));
renderer.Verify(x => x.Render(null), Times.Never());
}
public void SearcherNotValidator_CallSearch()
{
var searcher = new Mock <IExpressionSearcher>();
var renderer = new Mock <IExpressionsRenderer>();
renderer.Setup(x => x.Render(It.IsAny <IEnumerable <VariablesExpression> >()))
.Returns(string.Empty);
var former = new CanonicalFormulaFormer(searcher.Object, renderer.Object);
former.Transform(string.Empty);
searcher.Verify(x => x.SearchGroups(It.IsAny <string>()), Times.AtLeastOnce());
}
public void InvalidFormula_ReturnsNull()
{
var searcher = new Mock <IExpressionSearcher>();
searcher.As <IFormulaValidator>()
.Setup(x => x.Validate(It.IsAny <string>()))
.Returns(false);
var former = new CanonicalFormulaFormer(searcher.Object, Mock.Of <IExpressionsRenderer>());
var result = former.Transform(string.Empty);
Assert.IsNull(result);
}
public void InvalidFormula_DoesntCallSearch()
{
var searcher = new Mock <IExpressionSearcher>();
searcher.As <IFormulaValidator>()
.Setup(x => x.Validate(It.IsAny <string>()))
.Returns(false)
.Verifiable();
var former = new CanonicalFormulaFormer(searcher.Object, Mock.Of <IExpressionsRenderer>());
var result = former.Transform(string.Empty);
Assert.IsNull(result);
searcher.Verify();
searcher.Verify(x => x.SearchGroups(It.IsAny <string>()), Times.Never());
}
public void NullRenderResult_ThrowsInvalidOperationException()
{
var former = new CanonicalFormulaFormer(Mock.Of <IExpressionSearcher>(), Mock.Of <IExpressionsRenderer>());
Assert.Throws <InvalidFormulaException>(() => former.Transform(string.Empty));
}
