public void When_getting_hash_code_for_different_types()
{
HashHelper.GetHashCode(1, "foo")
.ShouldBe(HashHelper.GetHashCode(1, "foo"));
HashHelper.GetHashCode(1, "foo")
.ShouldNotBe(HashHelper.GetHashCode("foo", 1));
}
public void When_checking_hash_code_for_default_values_of_different_types()
{
HashHelper.GetHashCode(0)
.ShouldBe(HashHelper.GetHashCode(default(TimeSpan)));
HashHelper.GetHashCode(0)
.ShouldBe(HashHelper.GetHashCode((string)null));
HashHelper.GetHashCode(1)
.ShouldNotBe(HashHelper.GetHashCode("1"));
}
public void When_getting_hash_code_of_arrays()
{
var array1 = new[] { 1, 2, 3 };
var array2 = new[] { 1, 2, 3 };
var array3 = new[] { 3, 2, 1 };
HashHelper.GetHashCode(array1)
.ShouldBe(HashHelper.GetHashCode(array2));
HashHelper.GetHashCode(array1)
.ShouldNotBe(HashHelper.GetHashCode(array3));
}
public void When_getting_hash_code_for_timespan()
{
HashHelper.GetHashCode(default(TimeSpan)).ShouldBe(0);
HashHelper.GetHashCode(default(TimeSpan))
.ShouldBe(HashHelper.GetHashCode(default(TimeSpan)));
HashHelper.GetHashCode(default(TimeSpan))
.ShouldNotBe(HashHelper.GetHashCode(1.Seconds()));
HashHelper.GetHashCode(1.Seconds())
.ShouldNotBe(HashHelper.GetHashCode(2.Seconds()));
HashHelper.GetHashCode(1.Seconds(), 2.Seconds())
.ShouldNotBe(HashHelper.GetHashCode(2.Seconds(), 1.Seconds()));
HashHelper.GetHashCode(1.Seconds(), 2.Seconds())
.ShouldNotBe(HashHelper.GetHashCode(1.Seconds(), 2.Seconds(), default(TimeSpan)));
}
public void When_getting_hash_code_for_int()
{
HashHelper.GetHashCode(0).ShouldBe(0);
HashHelper.GetHashCode(0)
.ShouldBe(HashHelper.GetHashCode(0));
HashHelper.GetHashCode(0)
.ShouldNotBe(HashHelper.GetHashCode(1));
HashHelper.GetHashCode(int.MaxValue)
.ShouldNotBe(HashHelper.GetHashCode(int.MinValue));
HashHelper.GetHashCode(1, 2)
.ShouldNotBe(HashHelper.GetHashCode(2, 1));
HashHelper.GetHashCode(1, 2)
.ShouldNotBe(HashHelper.GetHashCode(1, 2, 0));
}
public void When_getting_hash_code_for_string()
{
string nullString = null;
HashHelper.GetHashCode(nullString).ShouldBe(0);
HashHelper.GetHashCode(nullString)
.ShouldBe(HashHelper.GetHashCode(nullString));
HashHelper.GetHashCode(nullString)
.ShouldNotBe(HashHelper.GetHashCode("foo"));
HashHelper.GetHashCode("foo")
.ShouldNotBe(HashHelper.GetHashCode("bar"));
HashHelper.GetHashCode("foo", "bar")
.ShouldNotBe(HashHelper.GetHashCode("bar", "foo"));
HashHelper.GetHashCode("foo", "bar")
.ShouldNotBe(HashHelper.GetHashCode("foo", "bar", nullString));
}
public override int GetHashCode() => HashHelper.GetHashCode(Id, Age);
