public void RaiseException_FromInvalidMetatag()
{
var ex1 = Assert.Throws <ArgumentNullException>(() =>
EnumUtil.FromTag <MyEnum>(null, "invalid"));
var ex2 = Assert.Throws <ArgumentNullException>(() =>
EnumUtil.FromTag <MyEnum>(" ", "invalid"));
var ex3 = Assert.Throws <ArgumentNullException>(() =>
EnumUtil.FromTag <MyEnum>(CustomIdKey, null));
var ex4 = Assert.Throws <ArgumentNullException>(() =>
EnumUtil.FromTag <MyEnum>(CustomIdKey, " "));
var ex5 = Assert.Throws <InvalidCastException>(() =>
EnumUtil.FromTag <MyEnum>(CustomIdKey, "invalid"));
Assert.Equal("tagKey", ex1.ParamName);
Assert.Equal("tagKey", ex2.ParamName);
Assert.Equal("tagValue", ex3.ParamName);
Assert.Equal("tagValue", ex4.ParamName);
Assert.Equal(
"The Enum could not be converted because there is no value signed with the informed tag",
ex5.Message);
}
public void Parse_FromValidMetatag()
{
var firstOption = EnumUtil.FromTag <MyEnum>(DescriptionKey, "My First Option");
var thirdOption1 = EnumUtil.FromTag <MyEnum>(DescriptionKey, "My Third Option");
var secondOption = EnumUtil.FromTag <MyEnum>(CustomIdKey, "second-option");
var thirdOption2 = EnumUtil.FromTag <MyEnum>(CustomIdKey, nameof(MyEnum.ThirdOption));
Assert.Equal(MyEnum.FirstOption, firstOption);
Assert.Equal(MyEnum.SecondOption, secondOption);
Assert.Equal(MyEnum.ThirdOption, thirdOption1);
Assert.Equal(MyEnum.ThirdOption, thirdOption2);
}
