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122 lines
2.8 KiB
Python
122 lines
2.8 KiB
Python
### Tests of global flow
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# Simple assignment
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g = [5] # $ writes=g
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# Multiple assignment
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g1, g2 = [6], [7] # $ writes=g1 writes=g2
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# Assignment that's only referenced in this scope.
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unreferenced_g = [8] # $ writes=unreferenced_g
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print(unreferenced_g)
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# Testing modifications of globals
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# Modification by reassignment
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g_mod = []
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# This assignment does not produce any flow, since `g_mod` is immediately reassigned.
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# The following assignment should not be a `ModuleVariableNode`,
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# but currently our analysis thinks `g_mod` might be used in the `print` call
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g_mod = [10] # $ SPURIOUS: writes=g_mod
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print("foo")
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g_mod = [100] # $ writes=g_mod
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# Modification by mutation
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g_ins = [50] # $ writes=g_ins
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print(g_ins)
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g_ins.append(75)
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# A global with multiple potential definitions
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import unknown_module # $ writes=unknown_module
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if unknown_module.attr:
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g_mult = [200] # $ writes=g_mult
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else:
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g_mult = [300] # $ writes=g_mult
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# A global variable that may be redefined depending on some unknown value
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g_redef = [400] # $ writes=g_redef
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if unknown_module.attr:
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g_redef = [500] # $ writes=g_redef
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def global_access(): # $ writes=global_access
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l = 5
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print(g) # $ reads=g
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print(g1) # $ reads=g1
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print(g2) # $ reads=g2
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print(g_mod) # $ reads=g_mod
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print(g_ins) # $ reads=g_ins
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print(g_mult) # $ reads=g_mult
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print(g_redef) # $ reads=g_redef
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def print_g_mod(): # $ writes=print_g_mod
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print(g_mod) # $ reads=g_mod
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def global_mod(): # $ writes=global_mod
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global g_mod
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g_mod += [150] # $ reads,writes=g_mod
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print_g_mod() # $ reads=print_g_mod
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def global_inside_local_function(): # $ writes=global_inside_local_function
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def local_function():
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print(g) # $ reads=g
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local_function()
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## Imports
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# Direct imports
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import foo_module # $ writes=foo_module
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def use_foo(): # $ writes=use_foo
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print(foo_module.attr) # $ reads=foo_module
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# Partial imports
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from bar import baz_attr, quux_attr # $ writes=baz_attr writes=quux_attr
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def use_partial_import(): # $ writes=use_partial_import
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print(baz_attr, quux_attr) # $ reads=baz_attr reads=quux_attr
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# Aliased imports
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from spam_module import ham_attr as eggs_attr # $ writes=eggs_attr
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def use_aliased_import(): # $ writes=use_aliased_import
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print(eggs_attr) # $ reads=eggs_attr
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# Import star (unlikely to work unless we happen to extract/model the referenced module)
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# Unknown modules
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from unknown import *
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def secretly_use_unknown(): # $ writes=secretly_use_unknown
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print(unknown_attr) # $ reads=unknown_attr
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# Known modules
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from known import *
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def secretly_use_known(): # $ writes=secretly_use_known
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print(known_attr) # $ reads=known_attr
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# Local import in function
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def imports_locally(): # $ writes=imports_locally
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import mod1
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# Global import hidden in function
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def imports_stuff(): # $ writes=imports_stuff
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global mod2
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import mod2 # $ writes=mod2
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