mirror of
https://github.com/micropython/micropython.git
synced 2026-05-01 21:30:14 +02:00
Damien George
6f96d260e6
The webassembly port needs some additional weakref tests due to the fact that garbage collection only happens when Python execution finishes and JavaScript resumes. The `tests/ports/webassembly/heap_expand.py` expected output also needs to be updated because the amount of GC heap got smaller (weakref WTB takes some of the available RAM). Signed-off-by: Damien George <damien@micropython.org>
87 lines
1.9 KiB
JavaScript
87 lines
1.9 KiB
JavaScript
// Test weakref.finalize() functionality requiring gc.collect().
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// Should be kept in sync with tests/basics/weakref_finalize_collect.py.
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//
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// This needs custom testing on the webassembly port since the GC can only
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// run when Python code returns to JavaScript.
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const mp = await (await import(process.argv[2])).loadMicroPython();
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// Set up.
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mp.runPython(`
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import gc, weakref
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class A:
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def __str__(self):
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return "<A object>"
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def callback(*args, **kwargs):
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print("callback({}, {})".format(args, kwargs))
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return 42
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`);
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console.log("test basic use of finalize() with a simple callback");
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mp.runPython(`
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a = A()
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f = weakref.finalize(a, callback)
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a = None
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gc.collect()
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`);
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console.log("(outside Python)");
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mp.runPython(`
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print("alive", f.alive)
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print("peek", f.peek())
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print("detach", f.detach())
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print("call", f())
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`);
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console.log("test that a callback is passed the correct values");
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mp.runPython(`
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a = A()
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f = weakref.finalize(a, callback, 1, 2, kwarg=3)
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a = None
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gc.collect()
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`);
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console.log("(outside Python)");
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mp.runPython(`
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print("alive", f.alive)
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print("peek", f.peek())
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print("detach", f.detach())
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print("call", f())
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`);
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console.log("test that calling the finalizer cancels the finalizer");
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mp.runPython(`
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a = A()
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f = weakref.finalize(a, callback)
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print(f())
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print(a)
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a = None
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gc.collect()
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`);
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console.log("(outside Python)");
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console.log("test that calling detach cancels the finalizer");
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mp.runPython(`
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a = A()
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f = weakref.finalize(a, callback)
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print(len(f.detach()))
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print(a)
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a = None
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gc.collect()
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`);
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console.log("(outside Python)");
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console.log("test that finalize does not get collected before its ref does");
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mp.runPython(`
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a = A()
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weakref.finalize(a, callback)
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gc.collect()
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`);
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console.log("(outside Python)");
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mp.runPython(`
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print("free a")
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a = None
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gc.collect()
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`);
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console.log("(outside Python)");
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