public void Equals_SameInstance_ReturnTrue()
{
// Setup
var comparer = new StructureIdEqualityComparer();
var structure = new TestStructure();
// Call
bool areEqual = comparer.Equals(structure, structure);
// Assert
Assert.IsTrue(areEqual);
}
public void Equals_SameId_ReturnTrue(TestStructure secondStructure)
{
// Setup
var comparer = new StructureIdEqualityComparer();
var firstStructure = new TestStructure();
// Call
bool firstEqualsSecond = comparer.Equals(firstStructure, secondStructure);
bool secondEqualsFirst = comparer.Equals(secondStructure, firstStructure);
// Assert
Assert.IsTrue(firstEqualsSecond);
Assert.IsTrue(secondEqualsFirst);
}
public void GetHashCode_EqualStructures_ReturnsSameHashCode()
{
// Setup
var comparer = new StructureIdEqualityComparer();
var structureOne = new TestStructure();
var structureTwo = new TestStructure();
// Call
int hashCodeOne = comparer.GetHashCode(structureOne);
int hashCodeTwo = comparer.GetHashCode(structureTwo);
// Assert
Assert.AreEqual(hashCodeOne, hashCodeTwo);
}
public void Equals_UnequalInstance_ReturnFalse()
{
// Setup
var comparer = new StructureIdEqualityComparer();
var firstStructure = new TestStructure("id");
var secondStructure = new TestStructure("other id");
// Call
bool firstEqualsSecond = comparer.Equals(firstStructure, secondStructure);
bool secondEqualsFirst = comparer.Equals(secondStructure, firstStructure);
// Assert
Assert.IsFalse(firstEqualsSecond);
Assert.IsFalse(secondEqualsFirst);
}