public void GenerateCanReturnNullAndRandomValuesTest()
{
var nullFound = false;
var valueFound = false;
var target = new EnumValueGenerator();
for (var index = 0; index < 1000; index++)
{
var value = (SingleEnum?) target.Generate(typeof(SingleEnum?), null, null);
if (value == null)
{
nullFound = true;
}
else
{
valueFound = true;
}
if (nullFound && valueFound)
{
break;
}
}
nullFound.Should().BeTrue();
valueFound.Should().BeTrue();
}
public void AllowNullDeterminesWhetherNullCanBeReturned(bool allowNull)
{
var nullFound = false;
var executeStrategy = Substitute.For <IExecuteStrategy>();
var buildChain = new BuildHistory();
executeStrategy.BuildChain.Returns(buildChain);
var sut = new EnumValueGenerator
{
AllowNull = allowNull
};
for (var index = 0; index < 10000; index++)
{
var value = sut.Generate(executeStrategy, typeof(FileAttributes?));
if (value == null)
{
nullFound = true;
break;
}
}
nullFound.Should().Be(allowNull);
}
public void GenerateReturnsOnlyAvailableEnumValueWhenSingleValueDefinedTest()
{
var target = new EnumValueGenerator();
var first = target.Generate(typeof(SingleEnum), null, null);
first.Should().BeOfType<SingleEnum>();
first.Should().Be(SingleEnum.First);
}
public void GenerateReturnsRandomFileAttributesValueTest()
{
var target = new EnumValueGenerator();
var first = target.Generate(typeof(FileAttributes), null, null);
first.Should().BeOfType<FileAttributes>();
var second = target.Generate(typeof(FileAttributes), null, null);
first.Should().NotBe(second);
}
public void GenerateReturnsRandomFlagsEnumValueTest()
{
var target = new EnumValueGenerator();
var first = target.Generate(typeof(BigFlagsEnum), null, null);
first.Should().BeOfType<BigFlagsEnum>();
var values = Enum.GetValues(typeof(BigFlagsEnum));
values.Should().NotContain(first);
var second = target.Generate(typeof(BigFlagsEnum), null, null);
first.Should().NotBe(second);
}
public void AllowNullReturnsFalseByDefault()
{
var sut = new EnumValueGenerator();
sut.AllowNull.Should().BeFalse();
}
public void GenerateReturnsSmallFlagsEnumTest()
{
var target = new EnumValueGenerator();
var first = false;
var second = false;
var third = false;
for (var index = 0; index < 1000; index++)
{
var actual = (SmallFlags) target.Generate(typeof(SmallFlags), null, null);
if (actual == SmallFlags.First)
{
first = true;
}
else if (actual == SmallFlags.Second)
{
second = true;
}
else if (actual == (SmallFlags.First | SmallFlags.Second))
{
third = true;
}
if (first &&
second &&
third)
{
break;
}
}
first.Should().BeTrue();
second.Should().BeTrue();
third.Should().BeTrue();
}
public void GenerateReturnsRandomValueWhenTypeIsEnumTest()
{
var target = new EnumValueGenerator();
var first = target.Generate(typeof(BigEnum), null, null);
first.Should().BeOfType<BigEnum>();
Enum.IsDefined(typeof(BigEnum), first).Should().BeTrue();
var second = target.Generate(typeof(BigEnum), null, null);
first.Should().NotBe(second);
}
public void IsSupportedThrowsExceptionWithNullTypeTest()
{
var target = new EnumValueGenerator();
Action action = () => target.IsSupported(null, null, null);
action.ShouldThrow<ArgumentNullException>();
}
public void IsSupportedTest(Type type, bool expected)
{
var target = new EnumValueGenerator();
var actual = target.IsSupported(type, null, null);
actual.Should().Be(expected);
}
public void GenerateThrowsExceptionWithInvalidParametersTest(Type type)
{
var target = new EnumValueGenerator();
Action action = () => target.Generate(type, null, null);
action.ShouldThrow<NotSupportedException>();
}
public void GenerateReturnsZeroForEmptyEnumTest()
{
var target = new EnumValueGenerator();
var first = target.Generate(typeof(EmptyEnum), null, null);
first.Should().BeOfType<EmptyEnum>();
first.Should().Be((EmptyEnum) 0);
}
