public void ExtractingAFieldWithNoFiltersReturnsTheWholeField()
{
var field = new ExtractedValue("Foo", new ColumnInitialValue("A"));
var result = field.Extract(new SimpleRow("Hello, World"));
Assert.Equal("Hello, World", result);
}
public void ExtractingAFieldFromAColumnThatDoesNotExistThrowsExtractionErrorWithExtractedFieldSpecified()
{
var field = new ExtractedValue("Foo", new ColumnInitialValue("ZZ"));
var exception = Assert.Throws <ExtractedValueException>(() => field.Extract(new SimpleRow("Hello World")));
Assert.Equal(field, exception.ExtractedValue);
}
public void ExtractingAFieldWithNonZeroColumnExtractsFromTheCorrectColumn()
{
var field = new ExtractedValue("Foo", new ColumnInitialValue("C"));
var result = field.Extract(new SimpleRow("Hello", "Brave", "New", "World"));
Assert.Equal("New", result);
}
public void AddingAFilterChangesTheExtractedValue()
{
var field = new ExtractedValue("Foo", new ColumnInitialValue("A"));
field.Filters = new List <IStringFilter> {
new FooFilter()
};
var result = field.Extract(new SimpleRow("Bar"));
Assert.Equal("BarFoo", result);
}
public void FilterExceptionsAreWrappedInExtractedValueExceptions()
{
var field = new ExtractedValue("Foo", new ColumnInitialValue("A"))
{
Filters = new List <IStringFilter> {
new BoomFilter()
}
};
var exception = Assert.Throws <ExtractedValueException>(() => field.Extract(new SimpleRow("Hello World")));
Assert.IsType(typeof(InvalidOperationException), exception.InnerException);
}
public void MultipleFiltersAppliesThemInTheOrderSpecified()
{
var field = new ExtractedValue("Foo", new ColumnInitialValue("A"));
field.Filters = new List <IStringFilter> {
new FooFilter(), new BarFilter()
};
var field2 = new ExtractedValue("Bar", new ColumnInitialValue("A"));
field2.Filters = new List <IStringFilter> {
new BarFilter(), new FooFilter()
};
var result = field.Extract(new SimpleRow("")) + field2.Extract(new SimpleRow(""));
Assert.Equal("FooBarBarFoo", result);
}
