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SmartTestCaseTParam, T Method (ExpressionFuncTParam, EnumTypeHelperPlaceHolderT, T)

Creates an instance of Case class for a specific parameter path.

Namespace:  SmartTests
Assembly:  SmartTests (in SmartTests.dll) Version: 1.9.0
Syntax
public static Case Case<TParam, T>(
	Expression<Func<TParam, EnumTypeHelperPlaceHolder<T>>> path,
	out T value
)
where T : struct, new(), IComparable

Parameters

path
Type: System.Linq.ExpressionsExpressionFuncTParam, EnumTypeHelperPlaceHolderT
An Expression of the path and the criteria for the parameter of the method to test.
value
Type: T
One random value from the provided values in the equivalence class.

Type Parameters

TParam
The type of the parameter of the method to test.
T
The type of the parameter

Return Value

Type: Case
The newly created Case.
Remarks

Warning: Not all lambda can be used.

It has to have 2 constraints:

  1. Valid Parameter Name -
  2. Valid Parameter Type -
  3. Valid Path -
Examples
static class DateTimeHelper
{
    public static bool IsWeekEnd(DateTime date)
    {
        return date.DayOfWeek == DayOfWeek.Saturday ||
               date.DayOfWeek == DayOfWeek.Sunday;
    }
}

...

private static DateTime GenerateDateOnWeekDay( DayOfWeek day )
{
    var result = DateTime.Now;
    return result.AddDays( day - result.DayOfWeek );
}

[Test]
public void WeekEndTest()
{
    // You will have a warning because you do not test other days of the week
    var result = RunTest( Case( (DateTime date) => date.DayOfWeek.Values( DayOfWeek.Saturday, DayOfWeek.Sunday ), out var value ),
                          () => DateTimeHelper.IsWeekEnd( GenerateDateOnWeekDay( value ) ) );

    Assert.IsTrue( result );
}
See Also

Reference

SmartTestCaseTParam, T(ExpressionFuncTParam, EnumTypeHelperPlaceHolderT, T)