diff options
| -rw-r--r-- | tests/extmod/uctypes_sizeof_layout.py | 27 | ||||
| -rw-r--r-- | tests/extmod/uctypes_sizeof_layout.py.exp | 3 |
2 files changed, 30 insertions, 0 deletions
diff --git a/tests/extmod/uctypes_sizeof_layout.py b/tests/extmod/uctypes_sizeof_layout.py new file mode 100644 index 000000000..2108e8150 --- /dev/null +++ b/tests/extmod/uctypes_sizeof_layout.py @@ -0,0 +1,27 @@ +try: + import uctypes +except ImportError: + print("SKIP") + raise SystemExit + +desc = { + "f1": 0 | uctypes.UINT32, + "f2": 4 | uctypes.UINT8, +} + + +# uctypes.NATIVE is default +print(uctypes.sizeof(desc) == uctypes.sizeof(desc, uctypes.NATIVE)) + +# Here we assume that that we run on a platform with convential ABI +# (which rounds up structure size based on max alignment). For platforms +# where that doesn't hold, this tests should be just disabled in the runner. +print(uctypes.sizeof(desc, uctypes.NATIVE) > uctypes.sizeof(desc, uctypes.LITTLE_ENDIAN)) + +# When taking sizeof of instantiated structure, layout type param +# is prohibited (because structure already has its layout type). +s = uctypes.struct(0, desc, uctypes.LITTLE_ENDIAN) +try: + uctypes.sizeof(s, uctypes.LITTLE_ENDIAN) +except TypeError: + print("TypeError") diff --git a/tests/extmod/uctypes_sizeof_layout.py.exp b/tests/extmod/uctypes_sizeof_layout.py.exp new file mode 100644 index 000000000..281f20856 --- /dev/null +++ b/tests/extmod/uctypes_sizeof_layout.py.exp @@ -0,0 +1,3 @@ +True +True +TypeError |