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tests: Update test suite to be compatible with CPython 3.6.
CPython 3.6 has a few changes that, when run on uPy's test suite, give a different output to CPython 3.5. uPy currently officially supports the 3.4 language definition, but it's useful to be able to run the test suite with 3.4/3.5/3.6 versions of CPython. This patch makes such changes to support 3.6.
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‎tests/basics/python34.py‎

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# tests that differ when running under Python 3.4 vs 3.5
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# tests that differ when running under Python 3.4 vs 3.5/3.6
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# from basics/fun_kwvarargs.py
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# test evaluation order of arguments (in 3.4 it's backwards, 3.5 it's fixed)
@@ -13,14 +13,15 @@ def print_ret(x):
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{print_ret(1):print_ret(2)}
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# from basics/syntaxerror.py
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# can't have multiple * or ** (in 3.5 we can)
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def test_syntax(code):
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try:
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exec(code)
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except SyntaxError:
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print("SyntaxError")
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test_syntax("f(*a, *b)")
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test_syntax("f(**a, **b)")
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test_syntax("f(*a, *b)") # can't have multiple * (in 3.5 we can)
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test_syntax("f(**a, **b)") # can't have multiple ** (in 3.5 we can)
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test_syntax("() = []") # can't assign to empty tuple (in 3.6 we can)
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test_syntax("del ()") # can't delete empty tuple (in 3.6 we can)
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# from basics/sys1.py
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# uPy prints version 3.4

‎tests/basics/python34.py.exp‎

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@@ -5,5 +5,7 @@ None
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1
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SyntaxError
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SyntaxError
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SyntaxError
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SyntaxError
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3.4
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‎tests/basics/syntaxerror.py‎

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Original file line numberDiff line numberDiff line change
@@ -46,9 +46,6 @@ def test_syntax(code):
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# can't assign to power of composite
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test_syntax("f[0]**2 = 1")
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# can't assign to empty tuple
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test_syntax("() = 1")
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# can't have *x on RHS
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test_syntax("x = *x")
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@@ -66,7 +63,6 @@ def test_syntax(code):
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test_syntax("def f(a=1, b): pass")
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# can't delete these things
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test_syntax("del ()")
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test_syntax("del f()")
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test_syntax("del f[0]**2")
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test_syntax("del (a for a in a)")

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