public void ConstantsNotRelevant()
{
var data = new int[] { 1, 3, 5, 6 };
var query1 = from entry in data.AsQueryable() where entry % 2 == 0 select entry * 4;
var query2 = from entry in data.AsQueryable() where entry % 3 == 2 select entry * 7;
var hash1 = ExpressionTreeStructureHasher.ComputeHash(query1.Expression);
var hash2 = ExpressionTreeStructureHasher.ComputeHash(query2.Expression);
Assert.Equal(hash1, hash2);
}
public void DifferentQueryDifferetHash()
{
var data = new int[] { 1, 3, 5, 6 };
var query1 = from entry in data.AsQueryable() where entry % 2 == 0 select entry * 4;
var query2 = from entry in data.AsQueryable() where entry == 3 select entry * 4;
var hash1 = ExpressionTreeStructureHasher.ComputeHash(query1.Expression);
var hash2 = ExpressionTreeStructureHasher.ComputeHash(query2.Expression);
Assert.NotEqual(hash1, hash2);
}
public void ParameterValuesNotRelevant()
{
var data = new int[] { 1, 3, 5, 6 };
int mod = 2;
var query1 = from entry in data.AsQueryable() where entry % mod == 0 select entry * 4;
mod = 3;
var query2 = from entry in data.AsQueryable() where entry % mod == 0 select entry * 4;
var hash1 = ExpressionTreeStructureHasher.ComputeHash(query1.Expression);
var hash2 = ExpressionTreeStructureHasher.ComputeHash(query2.Expression);
Assert.Equal(hash1, hash2);
}
