public void TestStateCompare1()
{
Assert.False(StateCompare.WasModified(1, 1));
Assert.True(StateCompare.WasModified(1, 2));
Assert.False(StateCompare.WasModified("1", "1"));
Assert.True(StateCompare.WasModified("1", "2"));
Assert.False(StateCompare.WasModified(null, (object)null));
Assert.True(StateCompare.WasModified(null, new object()));
var o1 = new object();
var o2 = new object();
Assert.False(StateCompare.WasModified(o1, o1));
Assert.True(StateCompare.WasModified(o1, o2)); // Not same ref/pointer
}
public void TestStateCompareEnumerable()
{
var a = new MyClass()
{
s = "a"
};
var b1 = new MyClass()
{
s = "b"
};
var b2 = new MyClass()
{
s = "b"
};
var l1 = new List <MyClass>()
{
a, b1
};
var l2_1 = new List <MyClass>()
{
a, b1
};
var l2_2 = new List <MyClass>()
{
a, b2
};
Assert.False(StateCompare.WasModified(l1, l1));
Assert.True(StateCompare.WasModified(l1, l2_1));
// 2 different arrays are created from the same source list:
Assert.True(StateCompare.WasModified(l1.ToArray(), l1.ToArray()));
// Same object references in both arrays (but arrays dont have same ref):
Assert.True(l1.ToArray().SequenceEqual(l1.ToArray()));
Assert.True(l1.ToArray().SequenceEqual(l2_1.ToArray()));
// Because MyClass implements equals these are also equal:
Assert.True(l1.ToArray().SequenceEqual(l2_2.ToArray()));
Assert.False(l1.ToArray().Equals(l2_2.ToArray())); // Array ref not the same
Assert.True(l1.ToArray().SequenceReferencesEqual(l2_1.ToArray()));
Assert.False(l1.ToArray().SequenceReferencesEqual(l2_2.ToArray()));
Assert.False(l1.ToArray().SequenceReferencesEqual(new MyClass[0]));
Assert.False(new MyClass[0].SequenceReferencesEqual(l2_2.ToArray()));
}
public void TestStateCompareNullable()
{
int?o1 = null;
int?o2 = null;
Assert.False(StateCompare.WasModified(o1, o2));
o1 = 1;
o2 = 1;
Assert.False(StateCompare.WasModified(o1, o2));
o1 = null;
o2 = 1;
Assert.True(StateCompare.WasModified(o1, o2));
o1 = 1;
o2 = null;
Assert.True(StateCompare.WasModified(o1, o2));
o1 = 1;
o2 = 2;
Assert.True(StateCompare.WasModified(o1, o2));
}