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using NUnit.Framework;
using Python.Runtime;
using System.Linq;
using System.Reflection;
namespace Python.EmbeddingTest
{
public class TestOperator
{
[OneTimeSetUp]
public void SetUp()
{
PythonEngine.Initialize();
}
[OneTimeTearDown]
public void Dispose()
{
PythonEngine.Shutdown();
}
public class OperableObject
{
public int Num { get; set; }
public override int GetHashCode()
{
return unchecked(159832395 + Num.GetHashCode());
}
public override bool Equals(object obj)
{
return obj is OperableObject @object &&
Num == @object.Num;
}
public OperableObject(int num)
{
Num = num;
}
public static OperableObject operator ~(OperableObject a)
{
return new OperableObject(~a.Num);
}
public static OperableObject operator +(OperableObject a)
{
return new OperableObject(+a.Num);
}
public static OperableObject operator -(OperableObject a)
{
return new OperableObject(-a.Num);
}
public static OperableObject operator +(int a, OperableObject b)
{
return new OperableObject(a + b.Num);
}
public static OperableObject operator +(OperableObject a, OperableObject b)
{
return new OperableObject(a.Num + b.Num);
}
public static OperableObject operator +(OperableObject a, int b)
{
return new OperableObject(a.Num + b);
}
public static OperableObject operator -(int a, OperableObject b)
{
return new OperableObject(a - b.Num);
}
public static OperableObject operator -(OperableObject a, OperableObject b)
{
return new OperableObject(a.Num - b.Num);
}
public static OperableObject operator -(OperableObject a, int b)
{
return new OperableObject(a.Num - b);
}
public static OperableObject operator *(int a, OperableObject b)
{
return new OperableObject(a * b.Num);
}
public static OperableObject operator *(OperableObject a, OperableObject b)
{
return new OperableObject(a.Num * b.Num);
}
public static OperableObject operator *(OperableObject a, int b)
{
return new OperableObject(a.Num * b);
}
public static OperableObject operator /(int a, OperableObject b)
{
return new OperableObject(a / b.Num);
}
public static OperableObject operator /(OperableObject a, OperableObject b)
{
return new OperableObject(a.Num / b.Num);
}
public static OperableObject operator /(OperableObject a, int b)
{
return new OperableObject(a.Num / b);
}
public static OperableObject operator %(int a, OperableObject b)
{
return new OperableObject(a % b.Num);
}
public static OperableObject operator %(OperableObject a, OperableObject b)
{
return new OperableObject(a.Num % b.Num);
}
public static OperableObject operator %(OperableObject a, int b)
{
return new OperableObject(a.Num % b);
}
public static OperableObject operator &(int a, OperableObject b)
{
return new OperableObject(a & b.Num);
}
public static OperableObject operator &(OperableObject a, OperableObject b)
{
return new OperableObject(a.Num & b.Num);
}
public static OperableObject operator &(OperableObject a, int b)
{
return new OperableObject(a.Num & b);
}
public static OperableObject operator |(int a, OperableObject b)
{
return new OperableObject(a | b.Num);
}
public static OperableObject operator |(OperableObject a, OperableObject b)
{
return new OperableObject(a.Num | b.Num);
}
public static OperableObject operator |(OperableObject a, int b)
{
return new OperableObject(a.Num | b);
}
public static OperableObject operator ^(int a, OperableObject b)
{
return new OperableObject(a ^ b.Num);
}
public static OperableObject operator ^(OperableObject a, OperableObject b)
{
return new OperableObject(a.Num ^ b.Num);
}
public static OperableObject operator ^(OperableObject a, int b)
{
return new OperableObject(a.Num ^ b);
}
public static bool operator ==(int a, OperableObject b)
{
return (a == b.Num);
}
public static bool operator ==(OperableObject a, OperableObject b)
{
return (a.Num == b.Num);
}
public static bool operator ==(OperableObject a, int b)
{
return (a.Num == b);
}
public static bool operator !=(int a, OperableObject b)
{
return (a != b.Num);
}
public static bool operator !=(OperableObject a, OperableObject b)
{
return (a.Num != b.Num);
}
public static bool operator !=(OperableObject a, int b)
{
return (a.Num != b);
}
public static bool operator <=(int a, OperableObject b)
{
return (a <= b.Num);
}
public static bool operator <=(OperableObject a, OperableObject b)
{
return (a.Num <= b.Num);
}
public static bool operator <=(OperableObject a, int b)
{
return (a.Num <= b);
}
public static bool operator >=(int a, OperableObject b)
{
return (a >= b.Num);
}
public static bool operator >=(OperableObject a, OperableObject b)
{
return (a.Num >= b.Num);
}
public static bool operator >=(OperableObject a, int b)
{
return (a.Num >= b);
}
public static bool operator >=(OperableObject a, PyObject b)
{
using (Py.GIL())
{
// Assuming b is a tuple, take the first element.
int bNum = b[0].As<int>();
return a.Num >= bNum;
}
}
public static bool operator <=(OperableObject a, PyObject b)
{
using (Py.GIL())
{
// Assuming b is a tuple, take the first element.
int bNum = b[0].As<int>();
return a.Num <= bNum;
}
}
public static bool operator <(int a, OperableObject b)
{
return (a < b.Num);
}
public static bool operator <(OperableObject a, OperableObject b)
{
return (a.Num < b.Num);
}
public static bool operator <(OperableObject a, int b)
{
return (a.Num < b);
}
public static bool operator >(int a, OperableObject b)
{
return (a > b.Num);
}
public static bool operator >(OperableObject a, OperableObject b)
{
return (a.Num > b.Num);
}
public static bool operator >(OperableObject a, int b)
{
return (a.Num > b);
}
public static OperableObject operator <<(OperableObject a, int offset)
{
return new OperableObject(a.Num << offset);
}
public static OperableObject operator >>(OperableObject a, int offset)
{
return new OperableObject(a.Num >> offset);
}
}
[Test]
public void SymmetricalOperatorOverloads()
{
string name = string.Format("{0}.{1}",
typeof(OperableObject).DeclaringType.Name,
typeof(OperableObject).Name);
string module = MethodBase.GetCurrentMethod().DeclaringType.Namespace;
PythonEngine.Exec($@"
from {module} import *
cls = {name}
a = cls(-2)
b = cls(10)
c = ~a
assert c.Num == ~a.Num
c = +a
assert c.Num == +a.Num
a = cls(2)
c = -a
assert c.Num == -a.Num
c = a + b
assert c.Num == a.Num + b.Num
c = a - b
assert c.Num == a.Num - b.Num
c = a * b
assert c.Num == a.Num * b.Num
c = a / b
assert c.Num == a.Num // b.Num
c = a % b
assert c.Num == a.Num % b.Num
c = a & b
assert c.Num == a.Num & b.Num
c = a | b
assert c.Num == a.Num | b.Num
c = a ^ b
assert c.Num == a.Num ^ b.Num
c = a == b
assert c == (a.Num == b.Num)
c = a != b
assert c == (a.Num != b.Num)
c = a <= b
assert c == (a.Num <= b.Num)
c = a >= b
assert c == (a.Num >= b.Num)
c = a < b
assert c == (a.Num < b.Num)
c = a > b
assert c == (a.Num > b.Num)
");
}
[Test]
public void OperatorOverloadMissingArgument()
{
string name = string.Format("{0}.{1}",
typeof(OperableObject).DeclaringType.Name,
typeof(OperableObject).Name);
string module = MethodBase.GetCurrentMethod().DeclaringType.Namespace;
Assert.Throws<PythonException>(() =>
PythonEngine.Exec($@"
from {module} import *
cls = {name}
a = cls(2)
b = cls(10)
a.op_Addition()
"));
}
[Test]
public void ForwardOperatorOverloads()
{
string name = string.Format("{0}.{1}",
typeof(OperableObject).DeclaringType.Name,
typeof(OperableObject).Name);
string module = MethodBase.GetCurrentMethod().DeclaringType.Namespace;
PythonEngine.Exec($@"
from {module} import *
cls = {name}
a = cls(2)
b = 10
c = a + b
assert c.Num == a.Num + b
c = a - b
assert c.Num == a.Num - b
c = a * b
assert c.Num == a.Num * b
c = a / b
assert c.Num == a.Num // b
c = a % b
assert c.Num == a.Num % b
c = a & b
assert c.Num == a.Num & b
c = a | b
assert c.Num == a.Num | b
c = a ^ b
assert c.Num == a.Num ^ b
c = a == b
assert c == (a.Num == b)
c = a != b
assert c == (a.Num != b)
c = a <= b
assert c == (a.Num <= b)
c = a >= b
assert c == (a.Num >= b)
c = a < b
assert c == (a.Num < b)
c = a > b
assert c == (a.Num > b)
");
}
[Test]
public void TupleComparisonOperatorOverloads()
{
string name = string.Format("{0}.{1}",
typeof(OperableObject).DeclaringType.Name,
typeof(OperableObject).Name);
string module = MethodBase.GetCurrentMethod().DeclaringType.Namespace;
PythonEngine.Exec($@"
from {module} import *
cls = {name}
a = cls(2)
b = (1, 2)
c = a >= b
assert c == (a.Num >= b[0])
c = a <= b
assert c == (a.Num <= b[0])
c = b >= a
assert c == (b[0] >= a.Num)
c = b <= a
assert c == (b[0] <= a.Num)
");
}
[Test]
public void ReverseOperatorOverloads()
{
string name = string.Format("{0}.{1}",
typeof(OperableObject).DeclaringType.Name,
typeof(OperableObject).Name);
string module = MethodBase.GetCurrentMethod().DeclaringType.Namespace;
PythonEngine.Exec($@"
from {module} import *
cls = {name}
a = 2
b = cls(10)
c = a + b
assert c.Num == a + b.Num
c = a - b
assert c.Num == a - b.Num
c = a * b
assert c.Num == a * b.Num
c = a / b
assert c.Num == a // b.Num
c = a % b
assert c.Num == a % b.Num
c = a & b
assert c.Num == a & b.Num
c = a | b
assert c.Num == a | b.Num
c = a ^ b
assert c.Num == a ^ b.Num
c = a == b
assert c == (a == b.Num)
c = a != b
assert c == (a != b.Num)
c = a <= b
assert c == (a <= b.Num)
c = a >= b
assert c == (a >= b.Num)
c = a < b
assert c == (a < b.Num)
c = a > b
assert c == (a > b.Num)
");
}
[Test]
public void ShiftOperatorOverloads()
{
string name = string.Format("{0}.{1}",
typeof(OperableObject).DeclaringType.Name,
typeof(OperableObject).Name);
string module = MethodBase.GetCurrentMethod().DeclaringType.Namespace;
PythonEngine.Exec($@"
from {module} import *
cls = {name}
a = cls(2)
b = cls(10)
c = a << b.Num
assert c.Num == a.Num << b.Num
c = a >> b.Num
assert c.Num == a.Num >> b.Num
");
}
}
}