public void ConstructorSetsProperties()
{
// Arrange
Expression expression = Expression.Parameter(typeof(string), "parameter_name");
// Act
ExpressionFingerprint fingerprint = new FooExpressionFingerprint(expression);
// Assert
Assert.AreEqual(expression.NodeType, fingerprint.NodeType);
Assert.AreEqual(expression.Type, fingerprint.Type);
}
public void EqualsReturnsFalseIfOtherIsNotFingerprint()
{
// Arrange
Expression expression = Expression.Parameter(typeof(string), "parameter_name");
ExpressionFingerprint fingerprint = new FooExpressionFingerprint(expression);
// Act
bool equalsValue = fingerprint.Equals(5);
// Assert
Assert.IsFalse(equalsValue);
}
public void Comparison_EquivalentExpressions() {
// both fingerprints are FOO:int, so are equivalent
// Arrange
ExpressionFingerprint fingerprint1 = new FooExpressionFingerprint(Expression.Constant(0));
ExpressionFingerprint fingerprint2 = new FooExpressionFingerprint(Expression.Constant(1));
// Act
HashSet<ExpressionFingerprint> set = new HashSet<ExpressionFingerprint>(){
fingerprint1,
fingerprint2
};
// Assert
Assert.AreEqual(1, set.Count, "Fingerprints should have been equivalent.");
}
public void Comparison_DifferByType() {
// fingerprints are FOO:int and FOO:long, so not equivalent
// Arrange
ExpressionFingerprint fingerprint1 = new FooExpressionFingerprint(Expression.Constant(0));
ExpressionFingerprint fingerprint2 = new FooExpressionFingerprint(Expression.Constant(0L));
// Act
HashSet<ExpressionFingerprint> set = new HashSet<ExpressionFingerprint>(){
fingerprint1,
fingerprint2
};
// Assert
Assert.AreEqual(2, set.Count, "Fingerprints should not have been equivalent - differ by ExpressionFingerprint.Type.");
}
public void Comparison_DifferByNodeType() {
// fingerprints are FOO:int and PARAM:int, so not equivalent
// Arrange
ExpressionFingerprint fingerprint1 = new FooExpressionFingerprint(Expression.Constant(0));
ExpressionFingerprint fingerprint2 = new FooExpressionFingerprint(Expression.Parameter(typeof(int), null));
// Act
HashSet<ExpressionFingerprint> set = new HashSet<ExpressionFingerprint>() {
fingerprint1,
fingerprint2
};
// Assert
Assert.AreEqual(2, set.Count, "Fingerprints should not have been equivalent - differ by ExpressionFingerprint.NodeType.");
}
public void Comparison_DifferByGetType()
{
// fingerprints are FOO:int and BAR:int, so not equivalent
// Arrange
ExpressionFingerprint fingerprint1 = new FooExpressionFingerprint(Expression.Constant(0));
ExpressionFingerprint fingerprint2 = new BarExpressionFingerprint(Expression.Constant(0));
// Act
HashSet <ExpressionFingerprint> set = new HashSet <ExpressionFingerprint>()
{
fingerprint1,
fingerprint2
};
// Assert
Assert.AreEqual(2, set.Count, "Fingerprints should not have been equivalent - differ by ExpressionFingerprint.GetType().");
}
public void Comparison_EquivalentExpressions()
{
// both fingerprints are FOO:int, so are equivalent
// Arrange
ExpressionFingerprint fingerprint1 = new FooExpressionFingerprint(Expression.Constant(0));
ExpressionFingerprint fingerprint2 = new FooExpressionFingerprint(Expression.Constant(1));
// Act
HashSet <ExpressionFingerprint> set = new HashSet <ExpressionFingerprint>()
{
fingerprint1,
fingerprint2
};
// Assert
Assert.AreEqual(1, set.Count, "Fingerprints should have been equivalent.");
}
public void Comparison_DifferByNodeType()
{
// fingerprints are FOO:int and PARAM:int, so not equivalent
// Arrange
ExpressionFingerprint fingerprint1 = new FooExpressionFingerprint(Expression.Constant(0));
ExpressionFingerprint fingerprint2 = new FooExpressionFingerprint(Expression.Parameter(typeof(int), null));
// Act
HashSet <ExpressionFingerprint> set = new HashSet <ExpressionFingerprint>()
{
fingerprint1,
fingerprint2
};
// Assert
Assert.AreEqual(2, set.Count, "Fingerprints should not have been equivalent - differ by ExpressionFingerprint.NodeType.");
}
public void EqualsReturnsFalseIfOtherIsNotFingerprint() {
// Arrange
Expression expression = Expression.Parameter(typeof(string), "parameter_name");
ExpressionFingerprint fingerprint = new FooExpressionFingerprint(expression);
// Act
bool equalsValue = fingerprint.Equals(5);
// Assert
Assert.IsFalse(equalsValue);
}
public void ConstructorSetsProperties() {
// Arrange
Expression expression = Expression.Parameter(typeof(string), "parameter_name");
// Act
ExpressionFingerprint fingerprint = new FooExpressionFingerprint(expression);
// Assert
Assert.AreEqual(expression.NodeType, fingerprint.NodeType);
Assert.AreEqual(expression.Type, fingerprint.Type);
}