public void Should_not_allow_register_type_twice()
{
EasyHash <Foo> .Reset();
EasyHash <Foo> .Register(r => { });
EasyHash <Foo> .Register(r => { });
Action action = () => new Foo().GetHashCode();
action.ShouldThrow <InvalidOperationException>();
}
public void Should_use_custom_hashing_if_registered()
{
var foo = new Foo();
EasyHash <Foo> .Reset();
int defaultHashCode = foo.GetHashCode();
EasyHash <Foo> .Register(r => r.WithPrimes(23, 31));
int customHashCode = foo.GetHashCode();
defaultHashCode.Should().NotBe(customHashCode);
}
public void Should_generate_the_same_code_when_have_the_same_data()
{
EasyHash <Foo> .Reset();
EasyHash <Foo> .Register(r => { });
var one = new Foo()
{
Text = "some text"
};
var two = one.Clone();
one.GetHashCode().Should().Be(two.GetHashCode());
}
public void Should_generate_different_code_when_have_different_data()
{
EasyHash <Foo> .Reset();
EasyHash <Foo> .Register(r => { });
var one = new Foo()
{
Text = "some text"
};
var two = new Foo()
{
Text = "another text"
};
one.GetHashCode().Should().NotBe(two.GetHashCode());
}
public void Should_use_default_hashing_if_have_no_registration()
{
EasyHash <Foo> .Reset();
new Foo().GetHashCode().Should().NotBe(0);
}