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pythonnet/src/embed_tests/pyinitialize.cs at master · Donyjunior/pythonnet · GitHub
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using
System
;
using
NUnit
.
Framework
;
using
Python
.
Runtime
;
namespace
Python
.
EmbeddingTest
{
public
class
PyInitializeTest
{
/// <summary>
/// Tests issue with multiple simple Initialize/Shutdowns.
/// Fixed by #343
/// </summary>
[
Test
]
public
static
void
StartAndStopTwice
(
)
{
PythonEngine
.
Initialize
(
)
;
PythonEngine
.
Shutdown
(
)
;
PythonEngine
.
Initialize
(
)
;
PythonEngine
.
Shutdown
(
)
;
}
[
Test
]
public
static
void
LoadDefaultArgs
(
)
{
using
(
new
PythonEngine
(
)
)
{
using
(
var
argv
=
new
PyList
(
Runtime
.
Runtime
.
PySys_GetObject
(
"argv"
)
)
)
{
Assert
.
AreNotEqual
(
0
,
argv
.
Length
(
)
)
;
}
}
}
[
Test
]
public
static
void
LoadSpecificArgs
(
)
{
var
args
=
new
[
]
{
"test1"
,
"test2"
}
;
using
(
new
PythonEngine
(
args
)
)
{
using
(
var
argv
=
new
PyList
(
Runtime
.
Runtime
.
PySys_GetObject
(
"argv"
)
)
)
{
Assert
.
AreEqual
(
args
[
0
]
,
argv
[
0
]
.
ToString
(
)
)
;
Assert
.
AreEqual
(
args
[
1
]
,
argv
[
1
]
.
ToString
(
)
)
;
}
}
}
/// <summary>
/// Failing test demonstrating current issue with OverflowException (#376)
/// and ArgumentException issue after that one is fixed.
/// More complex version of StartAndStopTwice test
/// </summary>
[
Test
]
[
Ignore
(
"GH#376: System.OverflowException : Arithmetic operation resulted in an overflow"
)
]
//[Ignore("System.ArgumentException : Cannot pass a GCHandle across AppDomains")]
public
void
ReInitialize
(
)
{
var
code
=
"from System import Int32
\n
"
;
PythonEngine
.
Initialize
(
)
;
using
(
Py
.
GIL
(
)
)
{
// Import any class or struct from .NET
PythonEngine
.
RunSimpleString
(
code
)
;
}
PythonEngine
.
Shutdown
(
)
;
PythonEngine
.
Initialize
(
)
;
using
(
Py
.
GIL
(
)
)
{
// Import a class/struct from .NET
// This class/struct must be imported during the first initialization.
PythonEngine
.
RunSimpleString
(
code
)
;
// Create an instance of the class/struct
// System.OverflowException Exception will be raised here.
// If replacing int with Int64, OverflowException will be replaced with AppDomain exception.
PythonEngine
.
RunSimpleString
(
"Int32(1)"
)
;
}
PythonEngine
.
Shutdown
(
)
;
}
[
Test
]
public
void
TestScopeIsShutdown
(
)
{
PythonEngine
.
Initialize
(
)
;
var
scope
=
PyScopeManager
.
Global
.
Create
(
"test"
)
;
PythonEngine
.
Shutdown
(
)
;
Assert
.
That
(
PyScopeManager
.
Global
.
Contains
(
"test"
)
,
Is
.
False
)
;
}
/// <summary>
/// Helper for testing the shutdown handlers.
/// </summary>
int
shutdown_count
=
0
;
void
OnShutdownIncrement
(
)
{
shutdown_count
++
;
}
void
OnShutdownDouble
(
)
{
shutdown_count
*=
2
;
}
/// <summary>
/// Test the shutdown handlers.
/// </summary>
[
Test
]
public
void
ShutdownHandlers
(
)
{
// Test we can run one shutdown handler.
shutdown_count
=
0
;
PythonEngine
.
Initialize
(
)
;
PythonEngine
.
AddShutdownHandler
(
OnShutdownIncrement
)
;
PythonEngine
.
Shutdown
(
)
;
Assert
.
That
(
shutdown_count
,
Is
.
EqualTo
(
1
)
)
;
// Test we can run multiple shutdown handlers in the right order.
shutdown_count
=
4
;
PythonEngine
.
Initialize
(
)
;
PythonEngine
.
AddShutdownHandler
(
OnShutdownIncrement
)
;
PythonEngine
.
AddShutdownHandler
(
OnShutdownDouble
)
;
PythonEngine
.
Shutdown
(
)
;
// Correct: 4 * 2 + 1 = 9
// Wrong: (4 + 1) * 2 = 10
Assert
.
That
(
shutdown_count
,
Is
.
EqualTo
(
9
)
)
;
// Test we can remove shutdown handlers, handling duplicates.
shutdown_count
=
4
;
PythonEngine
.
Initialize
(
)
;
PythonEngine
.
AddShutdownHandler
(
OnShutdownIncrement
)
;
PythonEngine
.
AddShutdownHandler
(
OnShutdownIncrement
)
;
PythonEngine
.
AddShutdownHandler
(
OnShutdownDouble
)
;
PythonEngine
.
AddShutdownHandler
(
OnShutdownIncrement
)
;
PythonEngine
.
AddShutdownHandler
(
OnShutdownDouble
)
;
PythonEngine
.
RemoveShutdownHandler
(
OnShutdownDouble
)
;
PythonEngine
.
Shutdown
(
)
;
// Correct: (4 + 1) * 2 + 1 + 1 = 12
// Wrong: (4 * 2) + 1 + 1 + 1 = 11
Assert
.
That
(
shutdown_count
,
Is
.
EqualTo
(
12
)
)
;
}
[
Test
]
public
static
void
TestRunExitFuncs
(
)
{
if
(
Runtime
.
Runtime
.
GetDefaultShutdownMode
(
)
==
ShutdownMode
.
Normal
)
{
// If the runtime using the normal mode,
// callback registered by atexit will be called after we release the clr information,
// thus there's no chance we can check it here.
Assert
.
Ignore
(
"Skip on normal mode"
)
;
}
Runtime
.
Runtime
.
Initialize
(
)
;
PyObject
atexit
;
try
{
atexit
=
Py
.
Import
(
"atexit"
)
;
}
catch
(
PythonException
e
)
{
string
msg
=
e
.
ToString
(
)
;
Runtime
.
Runtime
.
Shutdown
(
)
;
if
(
e
.
IsMatches
(
Exceptions
.
ImportError
)
)
{
Assert
.
Ignore
(
"no atexit module"
)
;
}
else
{
Assert
.
Fail
(
msg
)
;
}
return
;
}
bool
called
=
false
;
Action
callback
=
(
)
=>
{
called
=
true
;
}
;
atexit
.
InvokeMethod
(
"register"
,
callback
.
ToPython
(
)
)
.
Dispose
(
)
;
atexit
.
Dispose
(
)
;
Runtime
.
Runtime
.
Shutdown
(
)
;
Assert
.
True
(
called
)
;
}
}
}
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