public void It_handles_String_identifiers()
{
var helper = new IdHelperForString();
string defaultValue = default;
// ReSharper disable StringLiteralTypo
// ReSharper disable ExpressionIsAlwaysNull
helper.IsDefaultValue(defaultValue).ShouldBeTrue();
helper.IsDefaultValue("XX").ShouldBeFalse();
helper.AreEqual(defaultValue, defaultValue).ShouldBeTrue();
helper.AreEqual(defaultValue, "X").ShouldBeFalse();
helper.AreEqual("X", defaultValue).ShouldBeFalse();
helper.AreEqual("ABCD", "abcd").ShouldBeTrue();
helper.AreEqual("ABCDE", "ABCDE").ShouldBeTrue();
helper.Compare(defaultValue, "AAA").ShouldBe(-1);
helper.Compare("BBB", defaultValue).ShouldBe(1);
helper.Compare(defaultValue, defaultValue).ShouldBe(0);
helper.Compare("X", "x").ShouldBe(0);
helper.GetHashCode(string.Empty).ShouldBe(string.Empty.GetHashCode());
helper.GetHashCode(defaultValue).ShouldBe(0);
helper.GetHashCode("XXX").ShouldBe("XXX".GetHashCode());
helper.GetHashCode("XXX").ShouldBe(helper.GetHashCode("xxx"));
// ReSharper restore ExpressionIsAlwaysNull
// ReSharper restore StringLiteralTypo
}
public void Value_type_string()
{
var helper = new IdHelperForString();
Assert.AreEqual(true, helper.IsNull(null));
Assert.AreEqual(true, helper.IsDefaultValue(null));
Assert.AreEqual(false, helper.IsDefaultValue("XX"));
Assert.AreEqual(true, helper.AreEqual(null, null));
Assert.AreEqual(false, helper.AreEqual(null, "X"));
Assert.AreEqual(true, helper.AreEqual("ABCD", "abcd"));
Assert.AreEqual(true, helper.AreEqual("ABCDE", "ABCDE"));
Assert.AreEqual(-1, helper.Compare(null, "AAA"));
Assert.AreEqual(+1, helper.Compare("BBB", null));
Assert.That(helper.Compare(null, null), Is.EqualTo(0));
Assert.AreEqual(0, helper.Compare("X", "x"));
Assert.AreEqual(string.Empty.GetHashCode(), helper.GetHashCode(string.Empty));
Assert.AreEqual(0, helper.GetHashCode(null));
Assert.AreEqual("XXX".GetHashCode(), helper.GetHashCode("XXX"));
Assert.AreEqual(helper.GetHashCode("XXX"), helper.GetHashCode("xxx"));
}
