public static void When_converting_a_boolean_to <TNumeric>(bool booleanValue, TNumeric expectedResult, IFormatProvider format, TNumeric defaultValue = default(TNumeric))
where TNumeric : struct
{
var conversionObserver = new SimpleConversionObserver();
var result = booleanValue.ConvertTo <TNumeric>(
defaultValue: defaultValue,
format: format,
conversionObserver: conversionObserver);
Assert.AreEqual(expectedResult, result);
Assert.IsFalse(conversionObserver.KnownFallbackToDefaultValueOccured);
Assert.IsNull(conversionObserver.KnownFallbackToDefaultValueReason);
Assert.IsFalse(conversionObserver.CaughtConversionExceptionOccured);
Assert.IsNull(conversionObserver.CaughtConversionException);
}
public void When_converting_null_to_int_with_null_default_value()
{
var conversionObserver = new SimpleConversionObserver();
var result = Converter.Convert(
value: null,
targetType: typeof(int),
targetDefaultValue: null,
format: null,
conversionObserver: conversionObserver);
Assert.AreEqual(0, result);
Assert.IsTrue(conversionObserver.KnownFallbackToDefaultValueOccured);
Assert.IsInstanceOfType(conversionObserver.KnownFallbackToDefaultValueReason, typeof(ArgumentNullException));
Assert.IsFalse(conversionObserver.CaughtConversionExceptionOccured);
Assert.IsNull(conversionObserver.CaughtConversionException);
}
public static void When_converting_an_empty_string_to <TNumeric>(IFormatProvider format, TNumeric defaultValue = default(TNumeric))
where TNumeric : struct
{
var value = "";
var conversionObserver = new SimpleConversionObserver();
var result = value.ConvertTo <TNumeric>(
defaultValue: defaultValue,
format: format,
conversionObserver: conversionObserver);
Assert.AreEqual(defaultValue, result);
Assert.IsTrue(conversionObserver.KnownFallbackToDefaultValueOccured);
Assert.IsInstanceOfType(conversionObserver.KnownFallbackToDefaultValueReason, typeof(ArgumentNullException)); // or maybe a FormatException??
Assert.IsFalse(conversionObserver.CaughtConversionExceptionOccured);
Assert.IsNull(conversionObserver.CaughtConversionException);
}
public static void When_converting_an_object_with_exception_to <TNumeric, TException>(object value, IFormatProvider format, TNumeric defaultValue = default(TNumeric))
where TNumeric : struct
where TException : Exception
{
var conversionObserver = new SimpleConversionObserver();
var result = value.ConvertTo <TNumeric>(
defaultValue: defaultValue,
format: format,
conversionObserver: conversionObserver);
Assert.AreEqual(defaultValue, result);
Assert.IsFalse(conversionObserver.KnownFallbackToDefaultValueOccured);
Assert.IsNull(conversionObserver.KnownFallbackToDefaultValueReason);
Assert.IsTrue(conversionObserver.CaughtConversionExceptionOccured);
Assert.IsInstanceOfType(conversionObserver.CaughtConversionException, typeof(TException));
}
public static void When_converting_a_nullable_boolean_to <TNumeric>(bool?booleanValue, TNumeric expectedResult, IFormatProvider format, TNumeric defaultValue = default(TNumeric))
where TNumeric : struct
{
var conversionObserver = new SimpleConversionObserver();
var result = booleanValue.ConvertTo <TNumeric>(
defaultValue: defaultValue,
format: format,
conversionObserver: conversionObserver);
Assert.AreEqual(expectedResult, result);
if (booleanValue.HasValue)
{
Assert.IsFalse(conversionObserver.KnownFallbackToDefaultValueOccured);
Assert.IsNull(conversionObserver.KnownFallbackToDefaultValueReason);
}
else
{
Assert.IsTrue(conversionObserver.KnownFallbackToDefaultValueOccured);
Assert.IsInstanceOfType(conversionObserver.KnownFallbackToDefaultValueReason, typeof(ArgumentNullException));
}
Assert.IsFalse(conversionObserver.CaughtConversionExceptionOccured);
Assert.IsNull(conversionObserver.CaughtConversionException);
}